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Lil Wayne Announces 'Welcome To Tha Carter' Tour
Donald Trump Receives Support From Some Black Pastors
By Shenequa Golding
Shenequa Golding
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Republican 2016 front runner Donald Trump held a meeting with about 100 black pastors in New York Monday, (November 30) and while he didn't receive a blanket endorsement from everyone, Trump appeared confident about those who did come forward in support.
ABC News reports, Trump's campaign initially promoted the meeting as an endorsement, sending out press material to outlets and concluded a press conference would be held afterward, but later canceled the conference and no media was allowed to attend.
Chrissy Teigen Shut Donald Trump Down With One Tweet
"He's best for not only for the country but certainly the black community," Pastor Steve Parson, a Richmond-area minister in Virginia said. "We're wanting to get off of welfare and we feel that can be done through the information the knowledge of a person like Donald Trump."
Pastor Jamal Bryant of Baltimore's The Empowerment Temple Church vehemently disagreed with his fellow clergymen who backed the 69-year-old real estate tycoon.
"They are prostituting themselves and, in essence, the black church," Bryant said.
Nas Takes A Quick Shot At Donald Trump On Instagram
Bryant–who was invited to the meeting but declined the offer–questioned the intentions of some of the reverends.
"I really felt that their contingency was really selling out their vote for nothing," said Bryant, who briefly ran for Congress as a Democrat earlier this year before calling off the bid. "We've heard nothing from (Trump) about bridging the gap of economic inequality, mass incarceration, public schools, trade with Africa and other issues important to the black community."
Donald Trump Tweets Questionable Statistics About Black-On-Black Violence
After the meeting, which Trump described as a "beautiful thing" he also said the pastors who have endorsed him did not ask him to change his tone, which has been the source of much controversy throughout his campaign.
"I think they want to see victory because it is about we want to win and we want to win together," he said after the meeting this afternoon.


4 Mar Зацелуй их всех!!! (Упрощённая версия) Kiss 'em All!!! (Simplified version) Порт моего старого мода под Skyrim SE XB1 Port of my old mod. 5 мар Зацелуй их всех!!! (Упрощённая версия) Kiss 'em All!!! (Simplified version) Порт моего старого мода под Skyrim SE Port of my old mod to. Skyrim SE version (kreativekaring.com) · Skyrim SE XB1 version (kreativekaring.com). v. 1. Joke mod makes possible to kiss almost everyone in Skyrim. Required SKSE.
17 Mar - 10 min - Uploaded by MxR Mods Skyrim Mods Featured: Enhanced Cities: Helgen kreativekaring.com 10 Feb - 1 min - Uploaded by RSV Шуточный мод, позволяющий расцеловать почти кого угодно в Скайриме. kreativekaring.com?book= 13 Dec Community content for this product may not be appropriate for all ages, or may not be appropriate for viewing at work. Continue. Cancel.
9 Oct "Kiss em all" Mod Link - posted in Skyrim Mod Talk: Hello, Not quite sure if this fits into this category in the forum, but any help would be. 15 Apr All credits and thanks go to RSV_RSV for his mod KISS'EM ALL available on Steam, to DHEUSTER for his mod AMAZING FOLLOWER. 22 Jun This mod allows you to kiss your spouse. I know there are several animation- based kiss mods (most of them use All you need is Skyrim Seriously 5 years in and I still can't find a single kissing mod for skyrim (Well I There's Kiss 'Em All. It's a russian mod, but there's an english. 15 Feb New Skyrim Mod Lets You Kiss Everyone, But Not Dragons, Perv The mod also includes a kissing book with tallies of all the people you've.


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The Indian Wire » Business » Derivative Marketplace CME Group and NASDAQ Announces Plans For New Features Contract On The NQH2O, $ 1.1 Billion California Water Market To Tie Onto CME Contract
Derivative Marketplace CME Group and NASDAQ Announces Plans For New Features Contract On The NQH2O, $ 1.1 Billion California Water Market To Tie Onto CME Contract
Swastik Bhattacharjee
The leading and most diverse derivatives marketplace of the world, CME Group and NASDAQ announced plans for a new features contract on the Nasdaq Veles California Water Index (NQH2O). The CME group will be announcing the Nasdaq Veles California Water Index futures contract in Q4 after it receives its regulatory review. $ 1.1 billion California's water market would get tied to CME's contract.
This will be the first one of a kind tool that would be used to provide agricultural, commercial, and municipal water users with greater transparency, price discovery, and risk transfer. This will in turn help to achieve more efficient and align supply and demand of this vital natural resource.
Water scarcity is a problem that has been reported in many parts of the world. Along with climate change and other natural changes, the availability of clean water would be scarce in the near future, as predicted by several researchers. On one, side two-thirds of the earth constitute the liquid, and climate change is causing a rise in the seawater level drastically submerging seashores. On the other hand, water fit for consumption is meager. The rising population of the world stands as another big hurdle as with the rise in population more water would be required to fulfill the necessity. According to CME, almost two-thirds of the world's population is expected to face water shortages by 2025.
CME Group Inc. says adding water to their charts would allow big Californian water consumers to protect themselves against the sudden hike in water prices. They also claim that this decision would benchmark water supply and signal how acute water scarcity is becoming in the state and the globe.
Tim McCourt global head of equity index and alternative investment products at CME, said, "Water scarcity is certainly one of the biggest challenges facing communities and individuals today across the globe, where currently about 2 billion people are already living in countries experiencing high water stress."
He also added, "With nearly two-thirds of the world's population expected to face water shortages by 2025, water scarcity presents a growing risk for businesses and communities around the world, and particularly for the $1.1 billion California water market. Developing risk management tools that address growing environmental concerns is increasingly important to CME Group. This innovative, new water contract builds on our strong partnership with Nasdaq, as well as our proven 175-year track record of helping end-users and other market participants manage risk in essential commodity markets including agriculture, energy, and metals.
Comments of Carter Malloy, founder, and chief executive officer of AcreTrader, a farmland investing platform was reported by the Mint as he said, "It's really a unique mechanism for investors themselves and California to be able to at the very least understand and price the risk and potentially hedge the risk of water price volatility."
Although we do not, right at this instance, have any clear visibility on what water prices would be in the future, climate advocates have warned in recent years for the potential of water wars as competition increases between needs from agriculture, energy, and growing cities.
Scarcity in water poses a huge problem in the production of food. As the availability of water would become sparse, the introduced drought would make farming increasingly difficult.
Many see the preservation and distribution of water as an attractive investment. Investors like Jeff Ubben launched Inclusive Capital Partners to tackle problems ranging from environmental damage to food scarcity through their funds.
Patrick Wolf, a senior manager for Nasdaq Global Indexes said, "What we really wanted to be able to do was first to provide clear and transparent rules-based information to the marketplace."
Lauren Dillard, Executive Vice President and Head of Nasdaq Global Information Services said, "The Nasdaq Veles California Water Index helps drive better outcomes for water market participants through verifiable price discovery. Our collaboration with CME Group has the power to deliver greater transparency around the management of an important natural resource." (Globe Newswire/Mint)
Harshita Sharma
FDI Flows To India Declined 26%, While China Attracted 1/4th Of Total Global FDI Flows In 2021: UNCTAD
A student from Kolkata. Currently content creator at The Indian Wire.
Abenomics: The Economic Philosophy Of Former Japanese Prime Minister Shinzo Abe And Its Potential To Break The Post COVID Stalemate
Private Equity Firm Blackstone Sells 23% Stake of Essel Propack Ltd. Worth $252 Million, Adds To Blackstone's $512 Billion Asset Under Management in India

redpajama_set_name: RedPajamaCommonCrawl


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Justia Patents Porous, Capillary, Particulate Or Sievelike Flame Holder, E.g., Radiant Surface Burner, Etc.US Patent for Ceramic fiber composite and method for making the same Patent (Patent # 7,201,572)
Ceramic fiber composite and method for making the same
Dec 16, 2003 - 3M Innovative Properties Company
A ceramic fiber composite comprises ceramic fibers bonded together by an at least partially ceramic binder formed from a nanoclay and at least one of a ceramic precursor material or a ceramic material. The present invention also concerns methods of forming ceramic fiber composites and burners containing them.
CROSS-REFERENCE TO RELATED APPLICATION
This application claims the benefit of U.S. Provisional Application No. 60/438,662, filed Jan. 8, 2003.
The present invention relates to ceramic fiber composite materials.
Ceramic materials are useful for many applications including, for example, those in which resistance to high temperatures is required. However, many ceramic materials have a relatively high thermal mass and/or are thermally shock-sensitive.
Gas burners typically operate at high (e.g., combustion) temperatures, and are therefore constructed of materials capable of withstanding such temperatures. Inorganic materials such as ceramics have been used in such burners, at least in part, because of their resistance to high temperatures and combustion.
In some burner designs (e.g., radiant burner or blue flame burner), combustion of gas occurs within or near to a body of ceramic material. Typically, on lighting such burners, the temperature of the ceramic material rapidly rises to the operating temperature of the burner. Variations in the coefficient of thermal expansion (i.e., CTE) that exist within the body of the ceramic material typically lead to an accumulation of stress within the ceramic material as the temperature rises. If sufficiently large, this stress may cause fracture of the inorganic matrix and a resulting failure of the burner.
Current approaches to gas burner manufacture include the use of ceramic and/or metal burner plates and/or radiators. However, such burners may have deficiencies such as, for example, a high pressure drop or high thermal mass that may cause burner inefficiency, unwanted emissions (e.g., NOX emissions), and/or fragility (e.g., mechanical or thermal shock sensitivity). Thus, there is a continuing need for materials that may be used in gas burners.
In one aspect, the present invention provides a method of making a ceramic fiber composite comprising:
forming a green substrate from components comprising ceramic fibers, and optionally an organic binder;
impregnating the green substrate with a first impregnation dispersion to provide an impregnated substrate, wherein the first impregnation dispersion comprises water, a nanoclay, and at least one of a ceramic precursor material or a ceramic material;
drying the impregnated substrate to provide a dried substrate;
calcining the dried substrate to form a calcined substrate (in some embodiments, in the form of a paper); and
firing the calcined substrate to form a ceramic fiber composite comprising ceramic fibers bonded together by an at least partially ceramic binder, wherein the ceramic fiber composite has a porosity (as determined hereinbelow) of less than 65 percent (e.g., less than 60, 55, 50, 45, 40, 35, 30, 25, 20, or even less than 15 percent).
In another aspect, the present invention provides a ceramic fiber composite comprising ceramic fibers bonded together by an at least partially ceramic binder, wherein the at least partially ceramic binder comprises chemically stabilized β-crystobalite (as described hereinbelow), and wherein the porosity of the ceramic fiber composite is less than 65 percent (e.g., less than 60, 55, 50, 45, 40, 35, 30, 25, 20, or even less than 15 percent). Such ceramic fiber composites may be used, for example, in the manufacture of burners, such as radiant burners and blue flame burners.
Ceramic fiber composites according to some embodiments of the present invention are mechanically stable (i.e., self-supporting, rigid), have relatively low thermal mass (e.g., as compared to metals), and are resistant to thermal shock and cycling. Such ceramic fiber composites are useful as components in the manufacture of gas burners that have one or more of good thermal durability, high efficiency, high thermal output, or low NOX emissions.
"nanoclay" refers to a clay in the form of extremely fine particles wherein the average primary dimension of the clay particles (i.e., the average largest dimension), is less than 100 nanometers (e.g., less than 50 nanometers);
"drying" refers to removal of greater than 90 percent by weight of the solvents (including water) introduced by the first impregnation dispersion;
"calcining" refers to heating to at least a temperature at which: any remaining volatiles (including all organic materials and water) that were present in a dried substrate are removed, accompanied by the transformation of any ceramic precursor materials that may be present into metal oxide(s); and
"firing" refers to heating to at least a temperature at which chemical bonds form between contacting ceramic particles of a calcined substrate, typically resulting in increased strength and density.
FIG. 1 is a cross-sectional schematic view of an exemplary burner according to one embodiment of the present invention;
FIG. 1a is a detailed view of one exemplary embodiment of FIG. 1;
FIG. 1b is a detailed view of one exemplary embodiment of FIG. 1;
FIG. 2 is a template pattern used to perforate the ceramic fiber composite shown in FIG. 3;
FIG. 3 is a photomicrograph of an exemplary ceramic fiber composite according to the present invention;
FIG. 4 is a template pattern used to perforate the ceramic fiber composite shown in FIG. 5; and
FIG. 5 is a photomicrograph of an exemplary ceramic fiber composite according to the present invention.
The green substrate comprises ceramic fibers bonded optionally together by an organic binder material.
Ceramic fibers used in practice of the present invention may be continuous or may have a discrete length (e.g., chopped fibers) and may be, for example, in the form of individual fibers (e.g., straight, crimped, or rovings), yarns, or a fabric (e.g., woven, knitted, or nonwoven). Typically, the ceramic fibers are sufficiently refractory to withstand heating to a temperature of 700° C. for more than 100 hours without significant embrittlement, and/or heating to a temperature of 1200° C. for at least a brief period of time (e.g., 1 minute). The ceramic fibers may contain glassy and/or crystalline phases, and be formed using materials including, for example, metal oxides, metal nitrides, metal carbides, or a combination thereof. For example, the ceramic fibers may primarily or completely comprise fibers formed from metal oxides including, for example, alumina, alumina-silica, alumina-boria-silica, silica, zirconia, zirconia-silica, titania, titania-silica, rare earth oxides, or a combination thereof.
Typically, the ceramic fibers have diameters in a range of from 1 micrometer to 25 micrometers (e.g., from 5 micrometers to 8 micrometers), although fibers with larger or smaller diameters may also be useful. If chopped, the ceramic fibers typically have an average length in a range of from 3 millimeters to 50 millimeters, although longer or shorter fibers may also be useful. Ceramic fibers of different lengths, diameters, and/or compositions may be blended. Typically, the use of longer fibers (e.g., 5 centimeter (cm) or longer) in the green substrate results in high physical integrity of the green substrate.
Exemplary commercially available ceramic fibers include glass fibers, non-oxide fibers (e.g., silicon carbide, silicon oxycarbide, silicon titanium oxycarbide), as well as those fibers marketed by 3M Company (Saint Paul, Minn.) under the trade designation "NEXTEL" (e.g., "NEXTEL 312", "NEXTEL 440", "NEXTEL 550", "NEXTEL 610", "NEXTEL 650", and "NEXTEL 720"), by belChem Fiber Materials GmbH (Freiberg, Germany) under the trade designation "BELCO TEX", and by Hitco Carbon Composites, Inc. (Gardena, Calif.) under the trade designation "REFRASIL".
Optionally, organic fibers may be included in the green substrate. Suitable organic fibers may include, for example, those fibers formed from acrylic, cellulose (e.g., long-length northern softwood fibers and synthetic cellulose), polyester, polyolefin, nylon, polyimide, and combinations thereof. The organic fibers may be fibrillated.
Optionally, the ceramic fibers may be bonded together by an organic binder prior to impregnation with the first impregnation dispersion. This organic binder may be any organic material capable of adhering to the ceramic fibers after drying the green substrate (i.e., it must leave at least some residue on the fibers). The binder may comprise, for example, an organic polymer (e.g., acrylic polymer, styrene-butadiene copolymer, polybutadiene, polyvinyl chloride, acrylonitrile-butadiene copolymer, and polyvinyl acetate) or polymerizable resin (e.g., phenolic resin, thermoplastic, or thermosettable latex), thermoplastic fibers, or a combination thereof. The binder may be dissolved or suspended in a suitable solvent (e.g., water, organic solvent). The organic binder may impart a degree of thermoplastic character to the green substrate, which may be desirable, for example, if the green substrate is to be thermoformed. Typically, after applying the organic binder, the green substrate is at least partially dried and/or cured to remove water and other volatile compounds prior to impregnation with the first impregnation dispersion.
Typically, the organic binder imparts flexibility and handling strength to the green substrate. The organic binder, if used, is typically incorporated into the green substrate and/or dried substrate in an amount in a range of, for example from about 1 percent by weight to about 10 percent by weight, based on the total weight of the green substrate, although other amounts of organic binder may be also be used.
The green substrate may also include lofting agents such as, for example, glass bubbles, cellulosic chips, organic bubbles, and/or bubble agglomerates.
The green substrate may be formed by various techniques including wet-laid and air-laid processes. In one exemplary method, the green substrate may be made using conventional wet-laid paper making processes and equipment. For example, a slurry of ceramic fibers, optional organic binder, and other components in a liquid vehicle (e.g., aqueous or organic solvent) may be prepared using a solution mixer or blender. A coagulating agent (e.g., polyanionic complex, anionic or cationic polymer, ammonium aluminum sulfate, or other metal salt) may be added to the slurry to coagulate the optional organic binder and cause attachment of the organic binder to the ceramic fibers. The slurry is wet-laid onto a fine screen or felt and the liquid vehicle is removed (e.g., by pressing or under reduced pressure), leaving a sheet of entangled fibers and organic binders. The pressed paper may be further dried, if desired prior to impregnating with the first impregnation dispersion. Alternatively, for example, the above-mentioned slurry may be molded or vacuum formed.
In one exemplary air-laid method for forming the green substrate, the ceramic fibers are formed into a nonwoven mat using a conventional web-forming machine such as that marketed under the trade designation "RANDO WEBBER" by Rando Machine Corporation (Macedon, N.Y.). Typically, the nonwoven mat is further entangled by needletacking and/or hydroentanglement using methods well known in the art, although this is not a requirement.
Ceramic fibers in the green substrate may be randomly arranged or at least partially oriented with respect to each other.
The green substrate is then impregnated with a first impregnation dispersion. Exemplary methods of impregnating the green substrate include spraying, saturation coating, and roll coating. Typically, the first impregnation dispersion is applied to (e.g., homogeneously impregnated into) the green substrate, although in some cases it may be desirable for the first impregnation dispersion to be inhomogeneously applied, for example, to only a portion of the green substrate (e.g., applied in the form of a pattern).
The impregnation process may be carried out, for example, at ambient pressure or with an applied or reduced pressure to accelerate penetration of the first impregnation dispersion and to remove all entrained gases from the green substrate. The optional application of reduced pressure may be done while the substrate is being submerged in, or otherwise exposed to, the first impregnation dispersion or afterwards.
Optionally, to aid in impregnating the green substrate with the first impregnation dispersion, a penetrating agent may be included in the first impregnation dispersion. The penetrating agent may be, for example, any of a variety of organic molecules that enhance wetting of the organic binder-containing body of the green substrate by the first impregnation dispersion. The penetrating agent typically facilitates wetting of the organic binder-containing green substrate body by reducing the surface tension of the first impregnation dispersion and by reducing the surface energy at the interface between the first impregnation dispersion and the substrate body. The penetrating agent is typically sufficiently soluble in the first impregnation dispersion as to be present in an amount that enables it to be effective as a penetrating agent during impregnation. The penetrating agent and components of the first impregnation dispersion should be compatible (i.e., does not cause significant flocculation or particle separation).
Examples of useful penetrating agents include alcohols, organic amines, surfactants, and water-soluble polymers and macromolecules.
Exemplary suitable alcohols that may be used as penetrating agents in aqueous impregnation dispersions include alcohols such as isopropyl alcohol, ethyl alcohol, tert-butyl alcohol, butyl alcohol, propyl alcohol, sec-butyl alcohol, and other alcohols having at least moderate solubility in water.
Exemplary suitable organic amines that may be used include nitrate and halide salts of quaternary organic amines having at least one organic moiety attached thereto wherein the moiety comprises a carbon chain greater than two carbons in length.
Exemplary suitable surfactants include nonionic (e.g., sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, and polyoxyethylene stearates) and anionic surfactants (e.g., dioctyl sodium sulfosuccinate, sodium lauryl sulfate, and sodium dodecylbenzenesulfonate). Commercially available surfactants include: nonionic surfactants, for example, those marketed by Uniqema (Bridgewater, N.J.) under the trade designations "SPAN", "TWEEN", and "MYRJ" and those marketed by BASF Corporation (Mount Olive, N.J.) under the trade designations "PLURONIC" and "TETRONIC"; and anionic surfactants, for example, those marketed by Stepan Company (Winnetka, Ill.) under the trade designation "POLYSTEP" and those marketed by Rhodia, Inc. (Cranbury, N.J.) under the trade designation "ALIPAL".
Water-soluble polymers and macromolecules such as, for example, those possessing hydroxyl groups, carboxylate groups, ethylene oxide or propylene oxide linkages, amido functionality, sulfonate groups, phosphate groups, amino functionality, or water soluble cyclic groups such as pyrroles may also be useful as penetrating agents. The concentration of the penetrating agent typically depends on the nature of the impregnation dispersion and the chosen penetrating agent.
The first impregnation dispersion comprises a dispersion of a nanoclay and at least one of a ceramic precursor material or a ceramic material in a liquid vehicle. The liquid vehicle may be, for example, an aqueous solvent (e.g., water) or an organic solvent.
Nanoclay particles may be, for example, in the form of platelets or flakes. Exemplary nanoclays include bentonite clays, for example, those having a high montmorillonite content. Besides their fine particles size and water dispersibility, montmorillonite clays typically have the capability of being cation exchanged to lower the content of cations such as, for example, sodium and potassium in the montmorillonite clay.
Pyrolysis (e.g., firing) of calcium montmorillonite at or above about 850° C. typically forms a chemically stabilized β-cristobalite that exhibits material properties that contribute to the formation of a durable ceramic fiber composite. Chemically stabilized β-cristobalite also has the added advantage of its material characteristics (e.g., low coefficient of thermal expansion and high thermal shock resistance). The low thermal coefficient of expansion coupled with high temperature stability, makes chemically stabilized β-cristobalite one of the best refractory materials for applications where temperatures less than 1450° C. are encountered.
Chemically stabilized β-cristobalite has basically the same crystal structure as β-cristobalite, a high temperature polymorph of SiO2 (i.e., silica). Chemically stabilized β-cristobalite is formed after the dehydration of the calcium montmorillonite in the firing process. While chemically stabilized β-cristobalite has the β-cristobalite crystal structure, the chemical composition of chemically stabilized β-cristobalite is not that of pure silica. Pure silica is an acidic oxide, while chemically stabilized β-cristobalite is closer in chemistry to a feldspartic mineral and acts as a basic oxide.
β-Cristobalite is a high-temperature, low-pressure polymorph of silica in which the silica tetrahedra are arranged in a diamond like lattice with shared corners. β-Cristobalite has a cubic symmetry while α-cristobalite is tetragonal. In the case of pure silica, the fully expanded, high temperature beta structure undergoes a reversible displacive transformation to a collapsed alpha structure on cooling at about 265° C. This is accompanied by a volume decrease of about 3.2 percent. This transformation is often detrimental to the physical properties of the ceramic material containing the cristobalite. The temperature of the beta to alpha inversion in chemically stabilized or doped cristobalite is variable and depends on the level of doping and the nature of the doping cations. In order to stabilize β-cristobalite down to room temperature, and thereby render the cristobalite desirable as a crystalline component in ceramic materials to be used in refractory applications, the structure is typically doped with a sufficient level of stuffing cations (i.e., chemically stabilized), for example, uniformly dispersed in the crystal structure. Calcium montmorillonite contains the requisite cations (calcium, sodium, and aluminum) necessary to stabilize the β-cristobalite to below room temperature. Thus, by using calcium montmorillonite as a nanoclay binder, highly refractory and durable ceramic fiber composites can be prepared that comprise chemically stabilized β-cristobalite.
If desired, the montmorillonite clay may be combined with glass precursor materials in order to generate a chemically stabilized β-cristobalite glass that is toughened and thermally shock stable. Using various well known techniques, calcium montmorillonite may be ion-exchanged with other cations such as, for example, Cu2+, Co2+, Ni2+, Fe2+, Sr2+, K+, and NH4+, etc. to yield, after firing, a variety of stabilized β-cristobalites having different compositions.
Montmorillonite nanoclays are commercially available, for example, under the trade designation "BENTOLITE" (e.g., "BENTOLITE SSP") from Southern Clay Products, Inc. (Gonzales, Tex.).
Ceramic precursor materials are materials that form a high temperature ceramic (e.g., refractory ceramic) upon firing, and include metal hydroxides (e.g., aluminum trihydrate), metal oxy-hydroxides (e.g., boehmite (aluminum oxy-hydroxide), iron oxy-hydroxide), metal salts and metal salt solutions (e.g., solutions of silicates, transition metal salts, rare earth metal salts, aluminum salts, including basic metal salt solutions such as basic aluminum salt solutions and basic zirconium salt solutions) and metal complex solutions such as carboxylates (e.g., calcium oxalate, magnesium oxalate, copper oxalate, rare earth oxalates), phosphates, alkoxides, alcoholates, amine complexes, and hydroxides.
Ceramic particles that may be used in the first impregnation dispersion include powders of metal oxides (silica, alpha alumina, transitional aluminas, boehmite, cordierite, mullite, iron oxide, zirconia, ceria, magnesia, rare earth oxides), aluminates (e.g., barium aluminate, calcium aluminate), aluminosilicates, carbides (e.g., silicon carbide), oxycarbides (e.g., silicon oxycarbide), nitrides (e.g., silicon nitride, titanium nitride, boron nitride), oxynitrides, borides (e.g., titanium boride), and phosphates (e.g., zirconium phosphate, rare earth phosphates), and combinations thereof.
Typically, the ceramic precursor material and/or ceramic particles may be added to the green substrate in amounts of at least about 5 percent (e.g., at least about 10 percent, at least about 20 percent) up to about 30 or even 40 percent, (e.g., up to about 30 percent), based on the combined weight of the ceramic fibers, ceramic precursor material, and ceramic particles in the green substrate and first impregnation dispersion taken together, although other amounts may also be useful.
The nanoclay, ceramic precursor materials and/or ceramic particles may be present in colloidal form (e.g., colloidal silica, colloidal nanoclay, colloidal boehmite) in the first impregnation dispersion.
To incorporate cationic particles such as aluminas and zirconias into the first impregnation dispersion, it may be desirable to convert their surface charge from cationic to anionic. In this way, the nanoclay particles may freely interact (i.e., chemically bond, electrostatically attract or both) with both the ceramic fibers and the oxide particles in the green substrate. Methods of converting normally cationic particles to anionic particles include the following technologies: (1) treating the oxide particles with a polyanionic material such as, for example, polycarboxylic acid functional polymers and their salts, polysulfonated functional polymers and their salts, polyphosphate functional polymers and their salts, polymethacrylic acids and their salts, and the like so that the polyanionic material is adsorbed on the surfaces of the oxide particles, thereby making the oxide particles negatively charged; (2) treating the oxide particles with a polyvalent anionic salt or complexes such as tartrates, citrates or the like so that the anionic salt or complex is absorbed on the surface of the cationic particle, thereby rendering the oxide particle negatively charged; and (3) coating the oxide particle with an oxide colloid or coating that is itself negatively charged. An example of this latter method is the formation of silica-coated oxide particles formed via treatment of the oxide particles with sodium silicate or another hydrolyzable metal complex so as to deposit, by hydrolysis, an oxide coating of the silicate on the surfaces of the oxide particles.
The first impregnation dispersion may optionally further comprise one or more additives, such as a viscosity modifier (e.g., thixotropes, thickeners). Exemplary viscosity modifiers include water-soluble polymers and latexes.
After the green substrate is impregnated with the first impregnation dispersion, it is dried to provide a dried substrate. In some cases, it may be desirable to dry the impregnated green substrate immediately after impregnation. Methods for drying are well known, and include, for example, ovens, microwave heating, convective heating, and infrared heating.
The dried substrate is calcined to form a calcined substrate. Methods for calcining and firing are well known and include, for example, heating in a microwave furnace, box furnace, tube furnace, tunnel kiln, and/or belt kiln.
Typically, calcining is performed by heating the dried substrate at a temperature in a range of from about 350° C. to about 600° C., for a duration of from about 5 minutes to about 12 hours, although other durations and temperatures may also be useful.
Optionally, one or more additional impregnation dispersions (which may be the same as, or different from, the first impregnation dispersion) may be impregnated into at least one of the dried or calcined or fired substrates. Such additional dispersions (e.g., a second dispersion) typically comprise at least one of a ceramic precursor material or a ceramic material, and may optionally further include, for example, a catalyst or a nanoclay.
The calcined substrate is fired to form a ceramic fiber composite according to the present invention. Firing is typically performed by heating the dried substrate at a temperature in a range of from about 800° C. to about 1300° C., for a duration of from about 5 minutes to about 12 hours, although other durations and temperatures may be used. The resultant ceramic fiber composite comprising ceramic fibers is bonded together by an at least partially ceramic binder. By controlling the quantity of organic components and/or the density of the green substrate, it is possible to control the porosity of the ceramic fiber composite.
In some embodiments according to the present invention, calcining and firing may be carried out in a single process step.
Ceramic fiber composites according to the present invention have a porosity (exclusive of any perforations) of less that 65 percent (e.g., less than 60, less than 55, less than 50, less than 45, less than 40, less than 35, less than 30, less than 25, less than 20, or even less than 15 percent), and may have a porosity of greater than 10 percent (e.g., greater than 15, greater than 20, greater than 25, greater than 30, greater than 35, greater than 40, greater than 45, greater than 50, greater than 55, or even greater than 60 percent), based on the total volume of the ceramic fiber composite. Porosity in the ceramic fiber composite may be created, for example, by using a ceramic fiber fabric or mat having an open weave, or by forming a precursor substrate (e.g., the green substrate, dried substrate, or calcined substrate) to have a plurality of orifices in that substrate in a random, regular, or periodic fashion.
As used herein, "porosity" (in percent) is determined at 22° C. for a given ceramic fiber composite by dividing its pore volume by the total volume of the ceramic fiber composite (i.e., the pore volume plus the volume of the solid phase of the ceramic fiber composite) and multiplying by 100.
The pore volume of ceramic fiber composites can be determined by weighing a dry sample of ceramic fiber composite, saturating it with water, and weighing the saturated ceramic fiber composite. The pore volume equals the weight of the water in the saturated ceramic fiber composite divided by density of water.
The volume of the solid phase of a ceramic fiber composite can be determined by the Archimedes method, wherein the ceramic fiber composite (in dry form) is weighed, then immersed in a quantity of water and weighed while immersed. The difference between the dried and immersed weight of the sample is equal to the weight of the water that is displaced by the sample. The weight of the displaced water is converted to the volume of displaced water (which equals the volume of the solid phase) by dividing weight of the displaced water by the density of water.
In the special case of regularly shaped materials, a simple geometric calculation may be used to determine the volume of the solid phase. First, the dimensions of the ceramic fiber composite are measured (e.g., using a micrometer) and the volume of the material is calculated by applying the formula appropriate for the geometric form (e.g., in the case of a rectangular prism, the volume equals the width times the length times the height). The volume of the solid phase equals the calculate volume of the ceramic fiber composite minus the pore volume (as determined above).
Typically, the volume of the ceramic fibers is in a range of from at least 10 percent (e.g., at least 15, 20, or even at least 25 percent) up to 50 percent (e.g., up to 25, 30, 35, 40, or 45 percent) of the total volume of the at least partially ceramic binder and ceramic fibers, although higher and lower percentages may also be useful.
The ceramic fiber composite (e.g., for use as a burner pad) may be made to be thin (e.g., less than 1 millimeter in thickness) or thick (e.g., greater than 0.5 centimeter in thickness), although other thickness may also be useful. The thickness may be controlled, for example, by varying the thickness of the green substrate. Thin ceramic fiber composites may be accomplished by using a dense, pressed nonwoven mat or paper as a green substrate, whereas thicker ceramic fiber composites may be prepared, for example, by using a thicker, optionally lofted or needletacked, nonwoven green substrate.
The at least partially ceramic binder of ceramic fiber composites according to the present invention may be distributed at least substantially uniformly throughout the ceramic fiber composite or may have regions of higher and lower concentration.
Ceramic fiber composites according to the present invention may be used to support a number of different kinds of catalysts to assist in the reduction of other pollutants (e.g., NOX) in the combustion device exhaust. One way to catalyze a ceramic fiber composite according to the present invention is to introduce catalyst precursors, catalytic materials, or a combination thereof at one or more points in the substrate manufacturing process. Such catalytic components may be introduced in the initial green substrate forming process, in one or more impregnation steps, or a combination thereof. Exemplary catalytic materials include materials comprising metals such as platinum, palladium, rhodium, iron, nickel, silver, ruthenium, copper, gold, and combinations and alloys of these metals and compounds of these metals and metal oxides such as iron oxide, copper oxide, alkaline earth oxides, and alkaline earth aluminates, rare earth oxides, rare earth aluminates, cerium oxide, vanadium oxide, manganese oxide, cobalt oxide, first row transition metal—rare earth oxide compounds and mixtures, oxides having perovskite and perovskite-related crystal structures, metal phosphates and phosphate-oxide mixtures, and NOX reduction catalysts (e.g., rhodium supported on alumina, ceria, or alumina-ceria). The catalyst(s) may be present as particles of catalyst material(s) or catalyst material(s) on support particles, where the particles are adsorbed on the surface of the ceramic fiber composite.
In one embodiment according to the present invention, the catalytic metal or metal compound may be applied to the green substrate as a metal salt solution. The metal salt may then be, for example, chemically altered (e.g., chemically reduced) to the active metal form, or thermally decomposed to the active metal form, and adsorbed onto the ceramic fibers and ceramic component material. The catalytic metal or metal compound may also be formed as a colloidal dispersion or adsorbed on a colloidal carrier and then applied to the ceramic fibers and ceramic component material by dipping or other impregnation techniques. Catalytic metals or metal compounds may also be applied by conventional gas phase deposition techniques.
Ceramic fiber composites according to the present invention may have any shape (e.g., a sheet that may be substantially planar or nonplanar, a cone, a cylinder, or a thimble), the choice typically depending on the intended application. Exemplary methods of shaping the ceramic fiber composite include, for example, molding, embossing, and cutting the green substrate to a form that is maintained through the various processes described hereinabove to give a shaped ceramic fiber composite.
Alternatively, or in addition, ceramic fiber composites according to the present invention may be perforated, for example, by a laser, die, and/or hydrojet. The perforations may comprise at least one of slits (e.g., elongated openings) or circular holes and may comprise less than 40 percent (e.g., less than 35, 30, 25, 20, or even less than 15 percent) of the surface area of the ceramic fiber composite. Perforation may be performed on one or more of the green substrate, dried substrate, calcined substrate, and/or the ceramic fiber composite.
Ceramic fiber composites according to the present invention may be used, for example, in the manufacture of various burners. In such use, it may be desirable to arrange perforations in the ceramic fiber composite such that they are located away from (e.g., at least 1 or 2 centimeters) away from contact points with any housing to which they are mounted. This may help to reduce heating of the housing during operation of the burner.
In some embodiments, ceramic fiber composites according to the present invention may be used as a burner plate in a radiant or blue-flame burner. Referring to FIG. 1, burner 100 comprises housing 112 having gas inlet port 110. Burner plate 113 (shown in FIGS. 1a and 1b as 113a and 113b, respectively), which comprises a ceramic fiber composite according to the present invention, and optionally having holes 160a, 160b therein (as shown in FIGS. 1a and 1b, respectively), contacts housing 112 to form a seal that prevents gas from escaping around burner plate 113. In operation, a premixed gaseous fuel-air mixture 120 is introduced into burner 100 through gas inlet port 110. By adjusting the gas flow rate, combustion may be stabilized inside burner plate 113, which in turn heats up and radiates thermal energy 115. Typically, burner plate 113 should be sufficiently permeable to gaseous fuel-air mixture 120 (e.g., by being sufficiently porous and/or perforated) that it does not develop undesirably high back-pressure during use. By increasing the pressure drop across burner plate 113, it is typically possible to cause combustion to occur (e.g., with a visible blue flame) on the external face of burner plate 113. Burners that operate under such conditions are commonly termed blue-flame burners.
Exemplary perforated porous ceramic fiber composites according to the present invention that are suitable for use in burners are shown in FIGS. 1a (radiant burner) and 1b (blue-flame burner).
Further details concerning porous radiant burner design and operation may be found, for example, in U.S. Pat. No. 4,977,111 (Tong et al.); U.S. Pat. No. 5,077,089 (Otto); U.S. Pat. No. 5,993,192 (Schmidt et al.); and U.S. Pat. No. 6,190,162 B1 (Smith et al.), the disclosures of which are incorporated herein by reference.
Besides functioning as burner components, some embodiments of ceramic fiber composites according to the present invention may also find application in the areas of gas and fluid filtration, and/or thermal insulation (e.g., automotive or engine insulation).
The present invention will be more fully understood with reference to the following non-limiting examples in which all parts, percentages, ratios, and so forth, are by weight unless otherwise indicated.
Unless otherwise noted, all reagents used in the examples were obtained, or are available, from general chemical suppliers such as Aldrich Chemical Company, Milwaukee, Wis., or may be synthesized by known methods.
The following terms and abbreviations are used in the examples that follow:
NC1 a calcium montmorillonite nanoclay obtained under the trade designation "BENTOLITE SSP" from Southern Clay Products CPM1 silicon carbide particles having an average particle size of 4 micrometers obtained under the trade designation "1200-W BLACK SiC" from Electro Abrasives Corporation (Buffalo, New York) CPM2 silicon carbide particles having an average particle size of 9 micrometers obtained under the trade designation "800-W BLACK SiC" from Electro Abrasives Corporation (Buffalo, New York) LTX1 acrylic polymer latex obtained under the trade designation "RHOPLEX AC-261" from Rohm and Haas Company (Philadelphia, Pennsylvania) SURF1 ˜70 percent by weight solution of dioctyl sodium sulfosuccinate in petroleum distillates obtained under the trade designation "AEROSOL OT-S" from Cytec Industries, Inc. (Charlotte, North Carolina)
Porosities reported in the following examples were determined according to the Archimedes method unless otherwise specified.
General Procedure for Making a Ceramic Fiber Composite
The indicated impregnation dispersion was applied to a piece of a ceramic paper (6 inches×6 inches×⅛ inch (15 cm×15 cm×0.32 cm)) composed of ½-inch (1.2 cm) aluminum borosilicate fibers obtained under the trade designation "3M NEXTEL 312" from 3M Company, and having a basis weight of 150 grams per square meter (g/m2). The ceramic paper was prepared according to the "Wet Lay Method II" procedure of U.S. Pat. No. 5,955,177 (Sanocki et al.), the disclosure of which is incorporated herein by reference. The ceramic paper was saturated with the indicated impregnation dispersion resulting in a corresponding impregnated ceramic paper.
The impregnated ceramic paper was dried immediately after preparation on a perforated steel plate in a forced air furnace (obtained under the trade designation "DESPATCH V SERIES" from Despatch Industries (Minneapolis, Minn.) for 30 minutes at 65° C. to yield a corresponding dried coated paper.
The dried coated paper was then calcined and fired in a box oven (obtained under the trade designation "BOX OVEN" from Lindberg/Blue M (Ashville, N.C.) with heating according to the following temperature profile: room temperature to 250° C. at 2 degrees per minute, hold at 250° C. for 1 hour, ramp at 2 degrees per minute to 450° C., hold at 450° C. for 1 hour, ramp at 2 degrees per minute to 850° C., hold at 850° C. for 1 hour. After cooling to room temperature a corresponding ceramic fiber composite was obtained.
General Procedure for Perforating a Ceramic Fiber Composite
The indicated ceramic fiber composite was perforated by hand using a pin for the holes and tweezers for the slits to produce different designs for evaluation as a burner material in both blue flame and radiant mode.
Strength and Stiffness Test
Strength and stiffness of the ceramic fiber composites were measured using a materials tester obtained under the trade designation "MTS SINTECH 10D" from SINTECH, a division of MTS Systems Corporation (Eden Prairie, Minn.).
The test specimen 2 inches×2 inches (5 cm×5 cm) of ceramic fiber composite to be tested was mounted between two metal plates, each having a 2.85 cm hole, in a rig attached to the tester. The rig with plates was immobilized and a 2.85 mm diameter, flat-tipped rod was brought into contact with the specimen at the center of the hole. The test was run at a crosshead speed of 1 mm/minute, and the force required to punch the rod through the ceramic fiber composites was recorded using a 25 N capacity load cell. The Peak load was determined as the highest load in the load-displacement curve and recorded in grams. Stiffness was measured as the slope of the linear portion of the initial rise in the load-displacement curve and was recorded in Newtons/millimeter (N/mm).
Thermal Cracking Test
Ceramic fiber composites were tested by thermally shocking the specimens using a propane torch (obtained under the trade designation "TS2000" from BernzOmatic (Medina, N.Y.). The test specimen 2 inches×2 inches (5 cm×5 cm) of ceramic fiber composite to be tested was hung from a paper clip at room temperature, and the center of the specimen was exposed to the flame of the propane torch at a distance of 1.3 cm for 1 minute. The specimens were visually examined for cracks after the thermal shock. Results were recorded as either cracked or not cracked.
Burner Evaluation Test
A specimen of ceramic fiber composite (6 inches×6 inches (15 cm×15 cm) pieces) to be tested was mounted into the burner housing of a test burner obtained under the trade designation "PREMIX TEST FIRE STATION" obtained from Heatco, Inc. (Acworth, Ga.). The burner was lit, and the gas and air flows were adjusted in an attempt to produce uniform flame retention in radiant and blue-flame modes. The "turn down ratio" (i.e., the difference between the highest gas/air flow rate and the lowest gas/air flow rate at which the burner operates without flame-out) was determined by ascertaining the maximum and minimum stable flame conditions that could be obtained by modulating the gas/air flow rate.
Preparation of Impregnation Dispersion 1
A large beaker was charged with 3400 g of deionized water. While the water was being rapidly stirred with a magnetic stir bar, 600 g of NC1 was added, and the mixture was rapidly stirred for 3 hours resulting in a smooth (free of large particles) dispersion (Dispersion A). In a small beaker, 40 g of Dispersion A was mixed with 31.5 g of deionized water with a magnetic stir bar for 10 minutes. While still mixing, 21.5 g of ceramic precursor material CPM1 was added followed by the addition of 7.0 g of LTX1. The mixture was blended well using a high shear mixer obtained under the trade designation "OMNI 5000 MIXER" from Omni International, Inc. (Warrenton, Va.). Next, 2 drops of SURF1 was added and mixing was continued (at a slower stirring rate to minimize the formation of bubbles) for 3 hours, resulting in Impregnation Dispersion 1.
Two ceramic papers (15 cm×15 cm) were impregnated with Impregnation Dispersion 1, dried, calcined and fired according to the General Procedure for Making a Ceramic Fiber Composite (above) resulting in ceramic fiber composite CFC1 having an a porosity of 61.6 percent. The resulting ceramic fiber composites were perforated in different patterns according to the General Procedure for Perforating a Ceramic Fiber Composite (above) resulting in ceramic fiber composites CFC1a and CFC1b.
Ceramic fiber composite CFC1a was perforated using a template having perforations according to the 6-inch by 6-inch square pattern shown in FIG. 2. A portion of ceramic fiber composite CFC1a is shown in FIG. 3.
Ceramic fiber composites CFC1a and CFC1b were evaluated according to the Burner Evaluation Test.
In blue-flame mode, ceramic fiber composite CFC1a exhibited adequate flame retention without flash back, but had a low turn down ratio.
In blue-flame mode, ceramic fiber composite CFC1b exhibited very stable flame retention without flash back, and had a high turn down ratio.
A ceramic fiber composite was prepared as described for ceramic fiber composite CFC1a in Example 1. A catalyst was applied to a portion (roughly half) of the ceramic fiber composite CFC1a as follows:
A ceria-zirconia ceramic oxidation catalyst was prepared in the following manner: a mixed sol was prepared by adding with rapid stirring 100.0 g of a 20 percent by weight acetate stabilized aqueous colloidal ceria obtained under the trade designation "CeO2ACT" from Nyacol Corporation (Ashland, Mass.) to a mixture of 65.0 g of a 22 percent by weight aqueous zirconia sol (obtained under the trade designation "ZIRCONIUM ACETATE" from Magnesium Elektron, Inc. (Flemington, N.J.)), and 100 mL of deionized water. The resulting mixed sol was added dropwise with rapid stirring to a solution of 35 mL of concentrated ammonium hydroxide in 450 mL of deionized water. After the addition, the resulting gel was separated by centrifugation (at 5000 rpm for 15 minutes) and dried. The dried gel was slowly heated in an oven for 4 hours from room temperature to a final temperature of 800° C. at which it was then calcined and fired for 1 hour longer to form a ceramic oxidation catalyst. The fired ceramic oxidation catalyst was cooled to room temperature, then pulverized using a mortar and pestle. The pulverized ceramic oxidation catalyst was ball-milled along with one liter of deionized water and 1 mL of concentrated ammonium hydroxide using a 2-liter rubber-lined mill jar charged with about 4600 g of 1.27 cm zirconia mill media obtained from US Stoneware (East Palestine, Ohio). Milling was continued for 48 hours to form a uniform and smooth ceria-zirconia dispersion.
A portion (30 mL) of the ceria-zirconia dispersion was added dropwise onto the surface of the ceramic fiber composite (CFC2) prepared above. This coated ceramic fiber composite was dried in the oven at 95° C. for 1 hour resulting in a ceria-zirconia treated ceramic fiber composite (CFC3).
A chloroplatinic acid solution was prepared by diluting 1 mL of a 10 percent by weight aqueous solution of chloroplatinic acid with 9 mL of water. The ceria-zirconia treated ceramic fiber composite (CFC3) was then treated with this solution by adding the chloroplatinic acid solution dropwise onto the surface of the ceramic fiber composite to form a uniformly treated surface. This treated ceramic fiber composite was then heated at 400° C. for 1 hour resulting in catalyst treated ceramic fiber composite (CFC4).
Ceramic fiber composite (CFC4) was subjected to the Burner Evaluation Test and evaluated in the blue flame mode (as set for the uncatalyzed portion of the ceramic fiber composite). There was no evidence of flash back, and flame retention was very stable and flame height was uniform. It was observed that modulation between low and high firing intensities was excellent. The catalyzed portion of the ceramic fiber composite burned in the radiant mode while the un-catalyzed portion burned in a blue flame mode.
Impregnation Dispersion 2 was prepared according to the preparation of Impregnation Dispersion 1, except that the 31.5 g quantity of deionized water was replaced by a 21.5 g quantity of deionized water.
The procedure of Example 1 was repeated, except that Impregnation Dispersion 1 was replaced by Impregnation Dispersion 2 (above), and except that the ceramic paper used was substituted by a 5 cm×5 cm×3.5 cm sheet with a basis weight of 206 g/m2. The porosity of the resultant ceramic fiber composite (CFC5) was determined as follows: a 2.8 cm×4.1 cm and a 3.5 cm×2.0 cm section of the ceramic fiber composite to be tested were cut from the parent sample using a razor blade. The dimensions of each piece were measured using an electronic digital caliper obtained under the trade designation "FOWLER & NSK MAXI-CAL" (Fred V. Fowler Co., Inc., Des Plaines, Ill.). The porosities of the pieces were measured using the geometric method to determine the volume of each specimen. The average porosity of the two specimens taken together was found to be 50.1 percent.
Examples 4-27 and Comparative Examples A-E
Preparation of Impregnation Dispersions for Examples 4-27 and Comparative Examples A-E:
A large beaker was charged with 3400 g of deionized water. While the water was being rapidly stirred with a magnetic stir bar, 600 g of NC1 was added and the mixture was mixed for 3 hours resulting in a smooth (free of large particles) dispersion. In a small beaker, a quantity of this dispersion was mixed with water (in amounts as indicated in Table 1 (below)) with a magnetic stir bar for 10 minutes. While mixing, a quantity of silicon carbide was added followed by the addition of a quantity of LTX1 (in amounts as indicated in Table 1 (below)). After mixing well, 2 drops of SURF1 was added and the final sol was mixed for 3 hours but more slowly to avoid the formation of bubbles after the addition of the SURF1 to yield the Impregnation Dispersion.
While still mixing, a quantity of silicon carbide was added followed by the addition of a quantity of LTX1 (in amounts as indicated in Table 1 (below)). The mixture was blended well using a high shear mixer (obtained under the trade designation "OMNI 5000 MIXER" from Omni International, Inc.). Next, 2 drops of SURF1 was added and mixing was continued (at a slower stirring rate to minimize the formation of bubbles) for 3 hours, resulting in the indicated Impregnation Dispersion.
The resulting Impregnation Dispersions were substituted for Impregnation Dispersion 1 and the procedure of Example 1 was repeated, except that the ceramic paper dimensions were 2 inches×2 inches×⅛ inch (5 cm×5 cm×0.14 cm).
The resultant ceramic fiber composites were evaluated to the Strength and Stiffness Test and Thermal Cracking Test. Results are reported in Table 1 (below).
TABLE 1 Deionized Stiffness, Porosity, Example Type of SiC SiC, g LTX1, g NC1, g Water, g Peak Load, g N/mm percent
Example 4 CPM2 5 4 78.4 12.6 529 11.7 60.0 Example 5 CPM2 5 7 78.4 9.6 711 29.9 58.5 Example 6 CPM2 5 10 78.4 6.6 840 28.2 57.0 Comparative CPM2 10 4 54.9 31.1 1198 45.0 68.0 Example A Example 7 CPM2 10 4 78.4 7.6 577 19.1 60.5 Comparative CPM2 10 7 54.9 28.1 1053 40.6 73.7 Example B Example 8 CPM2 10 7 78.4 4.6 732 30.4 50.0 Comparative CPM2 10 10 54.9 25.1 963 31.2 67.5 Example C Example 9 CPM2 10 10 78.4 1.6 413 6.3 54.4 Example 10 CPM2 20 4 54.9 21.1 1957 46.0 62.8 Example 11 CPM2 20 7 54.9 18.1 2003 39.2 60.5 Example 12 CPM2 20 10 54.9 15.1 2129 43.8 63.0 Example 13 CPM1 5 4 78.4 12.6 893 35.0 52.0 Example 14 CPM1 5 7 78.4 9.6 828 37.6 49.5 Example 15 CPM1 5 10 78.4 6.6 958 33.9 45.7 Example 16 CPM1 10 4 54.9 31.1 1145 46.3 59.0 Example 17 CPM1 10 4 78.4 7.6 904 32.5 47.2 Example 18 CPM1 10 7 31.4 51.6 443 17.0 61.6 Comparative CPM1 10 10 31.4 48.6 437 16.8 76.4 Example D Example 19 CPM1 10 10 54.9 25.1 759 36.0 60.3 Example 20 CPM1 10 10 78.4 1.6 773 28.4 46.9 Example 21 CPM1 20 4 54.9 21.1 2339 53.4 58.6 Comparative CPM1 20 10 31.4 38.6 1614 43.7 69.7 Example E Example 22 CPM1 20 10 54.9 15.1 2223 48.4 52.8 Example 23 CPM1 25 7 50 18 1480 28.2 51.5 Example 24 CPM1 18 7 50 25 1266 32.1 62.4 Example 25 CPM1 19.85 7 45 28.3 1266 35.7 58.4 Example 26 CPM1 21.5 7 40 31.5 1331 41.8 61.6 Example 27 CPM1 23.3 7 45 24.8 1560 34.4 59.2
Duplicates of each of Examples 4-27 and Comparative Examples A-E were tested for thermal cracking.
In the Thermal Cracking Test: Example 18 and Examples 23-27 exhibited no cracking; Examples 4, 6, 8, 9, 11, 15, and 17 and Comparative Example B, all had one specimen out of two crack; and the remaining Examples and Comparative Examples had both specimens crack. While examples in which specimens cracked may or may not be useful for burner applications, they may be useful in other application (e.g., filter media, insulation).
A 15 cm×15 cm piece of ceramic fiber composite CFC1 was prepared according to the procedure of Example 1. The porosity of this piece was measured as follows: nine 3 cm×3 cm sections of ceramic fiber composite CFC1 were cut from the parent sample using a razor blade. The dimensions of each section were measured using an electronic digital caliper obtained under the trade designation "FOWLER & NSK MAXI-CAL" (Fred V. Fowler Co., Inc., Des Plaines, Ill.). The porosities of the sections were measured using the geometric method to determine the volume of each section. The average porosity of the two sections taken together was 61.1 percent.
Various modifications and alterations of this invention will become apparent to those skilled in the art without departing from the scope and spirit of this invention, and it should be understood that this invention is not to be unduly limited to the illustrated embodiments set forth herein.
1. A method of making a ceramic fiber composite comprising:
forming a green substrate from components comprising ceramic fibers;
calcining the dried substrate to form a calcined substrate; and
firing the calcined substrate to form a ceramic fiber composite comprising ceramic fibers bonded together by an at least partially ceramic binder, wherein the ceramic fiber composite has a porosity of less than 65 percent.
2. A method according to claim 1, wherein the green substrate is formed from components comprising ceramic fibers and an organic binder material.
3. A method according to claim 1, wherein the at least partially ceramic binder comprises chemically stabilized β-crystobalite.
4. A method according to claim 1, wherein the chemically stabilized β-crystobalite comprises calcium.
5. A method according to claim 1, further comprising impregnating a second dispersion into at least one of the dried, calcined, or fired substrates, wherein the second dispersion comprises at least one of a ceramic precursor material or a ceramic material.
6. A method according to claim 5, wherein the second dispersion further comprises at least one of a catalyst or a nanoclay.
7. A method according to claim 1, further comprising perforating the dried substrate.
8. A method according to claim 1, further comprising perforating the ceramic fiber composite.
9. A method according to claim 1, wherein the ceramic particles comprise an oxide of at least one of aluminum, zirconium, or silicon.
10. A method according to claim 1, wherein the first impregnation dispersion further comprises a surfactant.
11. A method according to claim 10, wherein the surfactant is ionic.
12. A method according to claim 1, wherein the first impregnation dispersion further comprises a viscosity modifier.
13. A method according to claim 1, wherein the porosity of the ceramic fiber composite is less than 60 percent.
16. A method according to claim 1, further comprising at least one of molding or shaping the green substrate.
17. A method according to claim 1, wherein the first impregnation dispersion comprises at least one of a metal oxide or a metal oxide precursor.
18. A method according to claim 17, wherein at least one the metal oxide or the metal oxide precursor is colloidal.
19. A method according to claim 1, wherein the first impregnation dispersion comprises silicon carbide.
20. A method according to claim 19, wherein the first impregnation dispersion further comprises at least one of colloidal boehmite, colloidal zirconia, or colloidal silica.
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Date of Patent: Apr 10, 2007
Inventors: Thomas E. Wood (Stillwater, MN), Scott M. Schutts (Menomonie, WI)
Primary Examiner: S. Gravini
Attorney: Bradford B. Wright
Current U.S. Class: Porous, Capillary, Particulate Or Sievelike Flame Holder, E.g., Radiant Surface Burner, Etc. (431/326); Zigzag, Corrugated, Or Conical (55/521); Forming Articles By Uniting Randomly Associated Particles (264/109); Including Ceramic, Glass, Porcelain Or Quartz Layer (428/210); With Nondrying Treating Of Material (34/380)
International Classification: F23D 14/12 (20060101);


text:
Ozzy Osbourne Sheds Light On Randy Rhoads And Eddie Van Halen Rivalry
In the late '70s and early '80s, the Los Angeles rock scene was popularly contested keenly among young guitarists who were hoping to inspire with their skills. Randy Rhoads and Eddie Van Halen achieved great feats and were regarded as the two greatest influences on the '80s rock and metal soundscape.
Also, both Rhoads and Van Halen made it to the list of the most influential guitarists of the 20th century by having a similar style of playing the guitar and musical appeal to the audience. However, Eddie hit commercial success before Rhoads because he signed a record deal years before, which boosted his career. Ozzy Osbourne shed light on the alleged rivalry between late, legendary guitarists Randy Rhoads and Eddie Van Halen.
Ozzy shed light on Randy and Eddie's rivalry
06 October 2020 – Eddie Van Halen, legendary Hall of Fame Guitarist and co-founder of Van Halen — has died after a long battle with throat cancer at the age of 65. File Photo: 30 March 2012 – Pittsburgh, PA – Guitarist EDDIE VAN HALEN of the legendary rock group VAN HALEN perform on a stop of their US Tour held at the CONSOL Energy Center. Photo Credit: Devin Simmons/AdMedia
Ozzy's encounter with Randy Rhoads was in 1979 after he left Black Sabbath. The pair worked together on his albums, The Blizzard Of Oz and Diary Of A Madman, released in 1980 and 1981, respectively. He became the first guitarist The Prince of Darkness collaborated with at the start of his solo career.
RELATED: Valerie Bertinelli Opens Up About How She Reconnected With Late Ex Eddie Van Halen
Recently, In an interview with Rolling Stone, Ozzy weighed in on Rhoad and Eddie's competitive nature, which supposedly started when both artists sought to gain Sunset Strip audiences' attention in the late '70s, with Rhoads being a founding member of the Quiet Riot band and Eddie Van Halen belonging to the Pasadena band.
"I heard recently that Eddie said he taught Randy all his licks … he never," Ozzy reveals. "To be honest, Randy didn't have a nice thing to say about Eddie. Maybe they had a falling out or whatever, but they were rivals."
RANDY RHOADS, c. 1979
The documentary Randy Rhoads: Reflections Of A Guitar Icon, released recently by Blabbermouth, had previously highlighted the rumored competition between Eddie and Randy. The film details an archive video of Eddie discussing Roads. "He was one guitarist who was honest, anyway. Because he said everything he did, he learned from me," Eddie offers. "He was good. But I don't really think he did anything that I haven't done. And there ain't nothing wrong with it. I've copied some other people, you know?"
Also, Randy's friend Kim McNair also spoke about the Rhoads-Van Halen rivalry in the recorded clip. "This was the years of guitar heroes. To a large degree, bands were judged on their guitar player. I think all the guitar players in town kept up on each other."
Meanwhile, QUIET RIOT fan club president Lori Hollen reveals his own take on the issue, "We would see David Lee Roth and Eddie Van Halen there, which was always interesting to me. Because I know Randy never went to see them play. But they would always come to see QUIET RIOT and Randy play."
To show the depth of the rivalry, Rhoads's guitar tech Brian Reason recalls how he used to paste a picture of Eddie Van Halen on his wah pedal. "He wasn't very excited about [it], but it was in the perfect place," Reason claims. "Because every time he stomped on his wah pedal, he stomped on it as if he wanted to crush it."
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This set of blue berry style LED lights are add some light to your home this year. They are battery operated which means that you can use these in a variety of places around your home. They have a unique berry shade that has a lovely shape.


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Ten Thousand Homes
Why Homes?
uVillage
Getting Ready for School || a day in the life
November 15, 2019 by Ten Thousand Homes.
by Phoebe Giffey-Brohaugh
Njabulo was up by 4:30 this morning, because his dad went to work. When his father works, he gets up early to say goodbye. When we arrive at 6, his niece, Mbali, is unusually quiet, because she has just gotten out of bed. Njabulo is busy with trying to find his belt and putting on his shoes. The hens are looking for seeds and bugs, and the roosters are beginning to crow. There is thick fog covering the hill the house is on.
His mother, Silvia, has been up since 4:30 as well. She's been busy cleaning, washing dishes, and helping Njabulo find clean school clothes. He has been sick the past couple of days, so he's moving a little slow. Njabulo sits in the doorway and watches cartoons while he wakes up. His mother is busy in the other room making him breakfast: tea and toast. "He likes toast very much. He eats it every morning," she says as she spreads butter on the freshly sliced brown bread.
Mbali sets out a cold drink case upside down so Njabulo can put his plate and cup on it. Rex the dog is still sleeping. His mother hands him some coins to buy snacks at school.
Usually Njabulo walks almost one kilometer (0.62 miles) to school. Today, in exchange for taking pictures, we are driving him there. Usually he brings his bookbag, but today at school they are getting the classrooms ready for testing. The children aren't required to attend on these days, but many of them do, so they can eat their free lunch.
Along the drive, all the other kids are piling into taxis to take to school or walking in small groups on the road. When we arrive at Embonisweni Primary School around 7:15 am, he seems a bit shy. He doesn't want to be seen getting his pictures taken, so we sit in the car.
Thank you for following along Njabulo's journey as he gets ready for school. Tune in next week for Part 2!
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Felicia Mabaso
uVillage, White River, South Africa
Local girl, Felicia, first met our founders way back in 2000 when she was a small girl. She later reconnected with Ten Thousand Homes in 2012 whilst working as a Home Based Care volunteer in nearby community, eDwaleni. Since that joyous day, Felicia's relationship with TTH has flourished so much so she is now part of the family. After graduating from a Discipleship School at uVillage Felicia joined the uVillage. She, along with her two children, lives and works on the uVillage campus exercising a growing gift of hospitality. She is now a pivotal member of our team where her jovial character and earth quaking laughter supply her and the others with endless entertainment.
Sam Thabethe
Builder, leader, legend…… Local lad, Sam, is the heartbeat of the uVillage maintenance team. Whether new construction, regular maintaining of the grounds, or emergency plumbing issues, Sam is is on the frontlines in the war to protect uVillage.
Following a chance meeting, Sam landed himself a temporary gardening role at uVillage. It wasn't long before Sam was promoted to a full-time position in our grounds team.
Sam's stupendous building abilities and relentless work ethic are matched only by the size of his heart. He is passionate about giving back to the communities from whose loins he was birthed. In addition to leading the uVillage grounds team, Sam is the spearhead of an initiative that seeks to provide sanitary towels, stationery, and uniforms for downtrodden female students in local high schools.
Lennon Malambe
Shy guy, Lennon, is another Siswati local who, since meeting us in 2009, has developed into an important cog in all Ten Thousand Homes and uVillage operations in Africa. Lennon first appeared during a building project in his home community Embonisweni. His jovial persona and love for meeting new people saw him strike up an immediate friendship with the TTH building team. The seeds of a beautiful relationship had been sewn and following graduation from uVillage training programs in 2010, Lennon joined staff on a permanent basis. Lennon is part of the uVillage leadership team.
Lennon has an enormous family. A recent head count revealed him to have 29 brothers, 36 sisters, 23 aunts, 12 uncles, 45 nephews, 18 nieces, and 1 dog.
Mzwandile Ndlovu
Man of the world, Mzwandile or Swazi as we like to call him, is the leader of uVillage and Ten Thousand Homes South Africa. He is responsible for galvanizing the uVillage community toward a vision of hope and transformation. A keen explorer, Swazi's time with Ten Thousand Homes has seen him venture to across Africa's heart in far flung expeditions to Mozambique, Swaziland, Malawi, Uganda, and Kenya. As well as a life changing journey to India.
Further to his role, Swazi is an exercise enthusiast whose brute physical power has attained mythic status in TTH folklore. Built like a teenage bison, Swazi undertakes a grueling regime in order to ensure he remains in peak condition. Do not be mistaken, though.
Rebekah Ness
Hailing from Iowa, USA, Rebekah first came to South Africa in 2013 to participate as a student in a uVillage training program. She returned to the corn fields and started a photography and creative design business but felt the pulling back to Africa. In 2017, Rebekah, along with her 2,148 books (maybe not that many but enough to fill a small library), joined Ten Thousand Homes staff as our "pretty maker." She is the face behind the beautiful content that we publish. Rebekah also serves on our uVillage leadership team and exercises her pretty making by bringing her green thumb and all around goodness to the everyday life of the community.
Coming from a large family, Rebekah loves to entertain. Walking into her house, however, you might think you took a wrong turn to the jungle. Never fear. The love of plants is strong with this one. At least you know, while feasting on her delicious home baked foods, no one at the party will run out of oxygen.
Phoebe Giffey-Brohaugh
Adventurous artist, Phoebe, sprinkles some much needed wanderlust on everyone she meets. Adorned with an amalgamation of tribal tattoos, piercings and (once upon a time) a mane of lustrous dreads, Phoebe is an artist in body as well as mind. She comments; "My body, mind, and spirit are a canvas which I must paint with the colour of life."
Born in the Montana wilderness, raised in Seattle and Wisconsin cheese country respectively she mad her first journey to Africa as just as a teenager.
Phoebe has an amazing ability to love people and find the best in everyone. She is also a great leader and influencer. In her time in South Africa she help pioneer a new school at uVillage called Aspire: for Artist and Entreprenuers. Phoebe is also the Founding Editor of the Ten Thousand Homes Storeys Magazine.
Jen Price
Jen is the doting wife of TTH czar, Jeremy. She is the Cleopatra to his Anthony, the omega to his alpha, the ocean breeze to his desert heat. A Jack of all trades, Jen has her fingers in many pies across the uVillage campus. As well as providing spiritual guidance to our often wayward female contingent, Jen is an events guru. She is the brains behind TTH's thriving social scene and has planned numerous evenings of raucous entertainment. The Valentine's banquet, Colour Party, and Easter masquerade would not have come to fruition without Jen's expertise. In addition to her stoic organizational talents, Jen also dabbles in more expressive pursuits. Following a chance meeting with Michael Jackson on a teenage jaunt to Disneyworld, she became enthralled by the art of dance. Now an accomplished break-dancer, Jen wows the TTH family with an ensemble of gravity defying moves at both dance parties and during times of worship.
Jeremy Price
Hewn from the most rustic Texan oak, Jeremy is one of Ten Thousand Homes' founding fathers. He is part of the fabric of our organisation and has played a key role in the conception and development of the TTH family. Jeremy was there on that most momentous of days nearly ten years ago when we erected our first home in a destitute South African slum. In his spare time 'Jezza' can often be found with a guitar in his hands and a melody on his lips. A skilled singer songwriter, his recent polemic 'From The Woods' is a chilling work capable of rendering the most cold blooded listener a quivering, foetal wreck. A must for any lover of the arts.


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Tmera Hepburn
All News, Holiday 2021, News, Philo
Streaming viewers are sure getting into the Christmas spirit as evidenced by the top performing titles on services like Philo. The Live & on-demand TV platform reports its most-watched movies for the week were all Christmas-themed films from Crown Media, and more specifically the Hallmark Channel.
Between content from from GAC Living, Hallmark, Lifetime, AMC, UPtv, VH1 and OWN, Philo also claims to be the streaming service with the most holiday content this year, making it the perfect streaming Home for the Holidays for Christmas-obsessed viewers.
Philo's Top 5 movies on the platform right now:
My Christmas Family Tree (Hallmark Channel)
Open by Christmas (Hallmark Channel)
Gingerbread Miracle (Hallmark Channel)
Christmas Sail (Hallmark Channel)
A Christmas Treasure (Hallmark Channel)
Philo is one of the most affordable live TV streaming services around. At only $25 per month, it's our top service for live TV viewers on a budget. Giving subscribers access to almost 63 channels and thousands of on-demand titles, the service focuses primarily on lifestyle and entertainment content.
You can sign up for Philo here.


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UPDATE: Fatal Accident on I-840 on Tuesday Night, THP Reports Charges are Pending Against One Driver
Jan 13, 2023 at 09:22 am by WGNS News
WGNS has more details on a Tuesday accident that claimed the life of a 61-year-old man on I-840. The wreck happened at the 37-mile marker near Arno Road, which is just over th.... Read More
UPDATE: Fatal Accident that Occurred on Tuesday on I-840 near the Rutherford / Williamson County Line Remains Under Investigation
Jan 11, 2023 at 06:34 pm by WGNS News
Few details are being released about a fatal accident that occurred on I-840 early Tuesday morning (01/10/2023). In fact, not even a preliminary crash report is being released.... Read More
Arrest Made After Sunday Auto Accident on I-840 Near Rutherford / Williamson County Line
Oct 31, 2022 at 12:47 pm by WGNS News
(RUTHERFORD / WILLIAMSON COUNTY, TN) There was a serious auto accident near the Rutherford / Williamson County line around 5:45 Sunday evening on I-840. The wreck highlights t.... Read More
Airplane Crashes in Williamson County on Tuesday - Pilot Dies in Crash
UPDATED - (WILLIAMSON COUNTY, Tenn.) In Williamson County, an airplane crashed on Old Smyrna Road Tuesday morning. The deceased pilot has been identified as 62-year-old Dr. Ch.... Read More
Middle Tennessee Electric Crews Head Into South Carolina as Hurricane Ian Wreaks Havoc
Sep 28, 2022 at 09:00 pm by WGNS News
Murfreesboro, Tenn.— Crews from Middle Tennessee Electric (MTE) are answering the call of duty by helping nearby states deal with the aftermath of Hurricane Ian..... Read More
Gas Prices Continue to be Less Than $3.00 Per Gallon This Week in Rutherford County, TN
Sep 26, 2022 at 11:30 am by WGNS News
(RUTHERFORD COUNTY, TN) Average gasoline prices are down in Rutherford County and we are starting the week-off with an average price of less than $3.00 per gallon for regular.... Read More
Middle TN Electric stresses innovation and service at Annual Meeting
Murfreesboro, Tenn. – Middle Tennessee Electric (MTE) leadership highlighted its current and future innovations, updated cooperative members about the status.... Read More
Middle Tennessee Electric to host 'Virtual' Annual Meeting this Saturday
Aug 25, 2022 at 09:17 am by WGNS
The annual meeting for Middle Tennessee Electric is this Saturday (August 27, 2022), and this year the meeting will be virtual… That was Amy Byers, Public Relations Coo.... Read More
The Median Price of Homes in Rutherford County Rose by 7.9% during the 1st Quarter of 2022
RUTHERFORD COUNTY, TENN. - Housing prices are up, as heard in numerous reports, which means first time home buyers moving into areas like Rutherford County are having a harder.... Read More
CONTINUED: Higher Electric Bills This Summer - Increased Fuel Costs
(Rutherford County, TN) WGNS continues to receive phone calls and emails asking our news team to further examine why local residents are receiving higher than usual electric b.... Read More
Middle Tennessee Electric members set all-time record for electricity consumption in HEAT
Murfreesboro, Tenn. – In battling a record hot July, members of Middle Tennessee Electric (MTE) set an all-time record for electricity consumption."We'r.... Read More
Man indicted this week after camera was found in girls restroom in 2021
Jul 08, 2022 at 07:52 pm by WGNS
In nearby Franklin,Tennessee, a man has just been indicted for a camera that was allegedly found in a girls restroom/changing room last year. WGNS' Ron Jordan filed this repor.... Read More
WGNS Radio Tower / Transmitter Without Power - Multiple Addresses Impacted by Random Outages Friday
Jun 17, 2022 at 03:11 pm by WGNS
UPDATE - Back at Full Power: The WGNS Radio Tower and Transmitter were without power Friday afternoon, after strong winds downed trees on the electric lines leading to.... Read More
Nolensville Fire & Rescue "Push-In" Ceremony
A short drive off of I-840 in Nolensville, Tennessee, the Nolensville Fire & Rescue department are planning to celebrate with a "Push-In" Ceremony. The ev.... Read More
Subject charged with DUI #5 in nearby Franklin, Tennessee
A Mt. Juliet man was apprehended in Williamson County and charged with his fifth DUI.A Franklin Police Officer on routine patrol apparently spotted 30-Year-old Dylan Scott L.... Read More
MTE continues to offer payment options as members receive higher bills due to the cold weather
Feb 15, 2022 at 07:20 am by WGNS
The recent wave of extreme cold weather has led to a wave of increased energy bills for many Middle Tennessee Electric (MTE) members.Heating and cooling costs can account for.... Read More
Auto Emission Testing Has Ended in Rutherford County and 4-Other Counties
Jan 28, 2022 at 03:08 pm by WGNS
Rutherford County, TN—It all ended just 14-days into the New Year... and now Rutherford County is sitting at 14-days into the change dealing with auto emission testing.... Read More
Rutherford County Records a 2.6% Unemployment Rate
Jan 27, 2022 at 11:45 am by WGNS
The unemployment numbers for each of Tennessee's 95-counties has been confirmed for the month of December and the jobless rate increased in 87 counties during the month. Fiv.... Read More
African American woman fears her family's 115-Year-old farm on Arno Road could become a housing development
Just a few miles from Eagleville, Tennessee is the site of a 100-year-old farm that is owned by an African American family that could soon be turned into a housing develo.... Read More
SCHOOL NEWS: Participation Rate and State Average Composite Decreased Slightly
Dec 28, 2021 at 10:12 pm by WGNS
An organization called NICHE looked at schools across the state of Tennessee and came up with a list of the best performing high schools. NICHE.com posted their rank.... Read More


Last week, 12 inmates at the Santa Cruz County Jail became algebra students, thanks in large part to Mark Krumholz '98, an assistant professor in the astronomy and astrophysics department at the University of California, Santa Cruz. Krumholz worked with corrections officials and administrators at the UC Santa Cruz Extension to create the UC Santa Cruz Project for Inmate Education, which offers college-level courses that allow the prisoners to earn credit while serving time. He'll be teaching the course, along with a handful of UC Santa Cruz faculty and graduate students.
In Santa Cruz, one of Krumholz's biggest challenges was location. All of California's major prisons are at least a two-hour drive from campus, and relatively few of the inmates in the nearby county jail remain there long enough to complete a full semester of coursework. But administrators at the jail were able to identify enough promising candidates to fill this summer's class.
Teaching inmates has been a rewarding experience, according to Krumholz, and it provides a welcome break from the computer models of the cosmos that occupy much of his time. "I need something other than research if I want to maintain my sanity," he said. "Community service is part of what makes me a happy, well-adjusted individual."
In addition to community service, Krumholz has an impressive research résumé. He studies how stars form and the physical mechanisms that determine things like the rate of formation and the size of the stars that are created. Since arriving at UC Santa Cruz, Krumholz has been the lead author of a paper in Science that explained how massive stars are able to form without blowing away the clouds of gas and dust that feed their growth. He also was one of 118 young professors nationwide to earn a 2009 Sloan Research Fellowship.


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What is facility insurance for high-risk drivers?
By: Lisa Coxon on January 18, 2019
No matter where you live in Canada, if you want to drive, you need insurance. But before insurers will give you a quote, they'll want to know a few things, like how many accidents you've been in and how many tickets you've received.
Your answers to these questions determine how risky you are to insure. Generally speaking, the riskier you are, the higher your premiums will be. But some drivers are considered too high a risk to insure at all. The threshold for that varies from insurer to insurer, but if an insurer decides you don't meet its underwriting criteria, then you might need something called facility insurance.
What is facility insurance and how does it work?
Facility insurance is a form of auto insurance for drivers who can't get approved for traditional insurance because they've been deemed too high risk. Each insurance company has its own set of criteria for determining what makes someone high risk, but essentially, it boils down to a few things: number of accidents, number of tickets/fines, whether or not your insurance policy has been cancelled due to missed payments, or whether you've been found guilty of misrepresentation (also known as insurance fraud).
Facility insurance is provided through the Facility Association, which is an administrative office that the industry created in 1979 when Ontario made it mandatory for drivers to have insurance. The facility association was created in order to guarantee access to auto insurance. It's often referred to as the "insurer of last resort."
But the facility association doesn't actually insure drivers. It relies on three servicing carriers — RSA, belairdirect and The Co-operators — to administer facility insurance policies and adjust claims on its behalf. If you wind up needing facility insurance, you'll be insured by one of these three companies.
Facility insurance is offered in only the six provinces and three territories that the facility association serves: New Brunswick, Nova Scotia, Prince Edward Island, Newfoundland and Labrador, Ontario, Alberta, the Yukon, Northwest Territories, and Nunavut. Any licensed auto insurance company in these provinces automatically becomes a member of the facility association by way of law and remains a member for as long as they're licensed to sell insurance. The facility association doesn't serve Quebec, and it also doesn't serve British Columbia, Manitoba, or Saskatchewan, because in these three provinces, auto insurance is provided by the government, not private insurers.
How does facility insurance differ from regular insurance?
Well, for starters, it's roughly two-to-three times more expensive.
"A facility policy, on average, would probably be $8,000 to 10,000 a year," says Tino Buntic, a broker with Sound Insurance Services Inc. "But if you're talking about the worst of the worst… in terms of people with massive tickets and accidents, that can go into the $20,000s. I did one policy in September that was $23,000 a year." That's almost $2,000 a month for auto insurance.
Facility insurance costs so much because it's designed to insure the riskiest drivers. "Risk is typically commensurate with pricing, to the extent that it's allowed by regulation," says Dave Simpson, president of the Facility Association. "So, consumers will find that our prices are at the top of or close to the top of the market."
The other difference is that when you purchase regular auto insurance, you're participating in what's called the "voluntary market." In other words, you are buying insurance from private companies who are voluntarily competing for your business. Facility insurance, on the other hand, exists in what's called the "facility association residual market," (known within the industry as the FARM), which is a market for both private and commercial high-risk drivers, who can't buy in the voluntary market but still require a policy, since auto insurance is mandatory in Canada. The FARM is what facility insurance premiums make up.
The Facility Association also runs what's called a risk-sharing pool, which is entirely separate from the FARM. Meant only for private passenger vehicle insurance, the risk-sharing pool exists to help insurers absorb the cost of insuring high-risk drivers who still qualify for traditional auto insurance. Insurance companies expect these high-risk drivers to make a lot of claims — and they expect to lose money on them — so in New Brunswick, Ontario, Alberta and Nova Scotia, insurers can transfer these drivers' monthly premiums to their province's risk-sharing pool. Then, should that high-risk driver make an expensive claim, the insurance company can be reimbursed for it. In this way, the risk is shared and not the burden of just one insurer.
Is facility insurance my only option?
No. But an insurer who turns you down for regular auto insurance might not tell you that. "Insurance companies are usually trained only in their company's rules," says Tino Buntic, a broker at Sound Insurance Services Inc. "So, when somebody hits three tickets, for instance, they're trained to say 'you don't qualify anymore, you're facility.' So, "facility" becomes kind of all-encompassing. But there are high-risk insurance companies that will still insure you."
Those companies are Jevco, Coachman, Echelon, Pafco and Economical — and Buntic works with all of them. Because it's cheaper, Buntic will always first try to get high-risk drivers insured with one of these five companies before filing an application for facility insurance.
And the facility association encourages this. In one sense, it doesn't really want your business. "We always want our market share to be as small as possible because consumers benefit from the competitive market," says Simpson, who, over the last two decades has seen a rise in non-standard insurance writers. In Ontario, Simpson estimates there are around 7.5 million insured private passenger vehicles. He says the facility association has less than 3,000 of those vehicles under facility insurance — or less than 1% of the market.
"Facility makes it as hard as it can to actually get into," explains Buntic. "Us brokers are expected to try and put people with an actual insurance company before facility. It's really there as a last resort. By design, facility is meant to insure people that nobody will insure."
Simpson puts it this way: "If you look at a long hallway with a lot of doors, and each insurance company is a door and they're all closed, right down at the end of the hall, our door would always be open. But if you could find an open door elsewhere, that's the one consumers should go through because it's in their best interest."
Will I ever get regular rates again?
Yes. While facility insurance rates are near the top of the market, facility insurance is kind of like a risky driver rehabilitation program. It uses negative reinforcement to inspire safer driving. The goal isn't to punish high-risk drivers with high rates forever — it's to get them back into the world of regular auto insurance.
Facility insurance is relatively rare, too. Buntic figures he files around six facility applications a year. On average, most people stay insured through the facility association for about two years. Over time, as things like tickets and accidents get wiped from your driving record, your rates will decrease upon each renewal.
"Usually with facility or anyone that's labelled as high-risk, most people consider them to be bad drivers," says Buntic. "But most of the time it's just someone who went through a string of bad luck. Usually, those people understand why they're paying more, and I find that most of them will drive better and be more careful to get back to where they were."
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