From Business: Bob Rohrman Auto Group owns and operates 26 dealerships in Indiana.The company offers new and used vehicles, service and financing. The brands sold include Lexus,â¦ Add to mybook Remove from mybook
Thermosetting polymers. Polymer with cross-links. Thermosetting polymers have different properties to thermosoftening polymers. Once moulded, they do not soften when heated and they cannot be reshaped. Vulcanised rubber is a thermoset thermoset: Material that becomes permanently hard after heating. used to make tyres.Its polymer chains are joined together by cross-links, so they cannot slide past each other easily. Page: 1  1. 2  2. 3  3. 4  4.ulcanised rubber is a thermoset thermoset: Material that becomes permanently hard after heating. used to make tyres. Its polymer chains are joined together by cross-links, so they cannot slide past each other easily. Page: 1  1. 2  2. 3  3. 4  4.
Plastics are polymers, but polymers don't have to be plastics. The way plastics are made is actually a way of imitating nature, which has created a huge number of polymers. Cellulose, the basic component of plant cell walls is a polymer, and so are all the proteins produced in your body and the proteins you eat.The properties of a particular plastic depend on what the polymer chains look like, how they are bonded to each other, and which additives have been introduced.  There are two groups of plastics: Thermoplastics, which melt when heated and can be remolded easily. Thermosets, which can't melt or be remolded.