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.
 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.ne of the most common is the plastic grocery bag. Polyethylene is made from just ethylene monomers-but it's also possible to create polymers from two or more different monomers. You can make hundreds of different polymers depending on which monomers and catalysts you use.