Plastics
Plastic:
a synthetic material derived from
petroleum made of a long chains of
molecules called polymers
2 Types of Plastics:
1. Thermoplastics
- can be reheated and
reformed
- examples are polyethylene,
nylon, vinyl, polystyrene
2. Thermoset
- cannot be remolded once
processed
- examples are polyurethanes,
polyesters, epoxies
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