Polymers are readily divided into three chief classes: (i) thermoplastics, (ii) thermosetting plastics or thermosets, and (iii) elastomers. The thermoplastics soften with increasing temperature and return to their original hardness when cooled. Most are meltable, e.g. nylon is extruded into fibers or filaments from the molten state. The thermosets harden when heated and retain hardness when cooled. They set into permanent shapes by catalysis or when heated under pressure. Generally, they cannot be reworked by scrap. Elastomers such as rubbers can withstand high deformation without rupture.
- Natural Rubber
- Chemical Resistance
- Acrylonitrile Butadiene Styrene
- Styrene Butadiene Rubber
- Butyl Rubber
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