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Define thermoplastic and thermosetting. material with suitable example |
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Answer» lastics are defined as polymers that can be melted and recast ALMOST indefinitely. They are molten when heated and harden upon cooling. When FROZEN, however, a thermoplastic becomes glass-like and subject to fracture.Examples of thermoplastic materials are polyethylene, polypropylene, polyvinyl chloride, POLYSTYRENE, polyamides, polyesters, and polyurethanes.Thermosetting plastics, such as phenol-formaldehyde, cannot be remouldedCompare thermoplastic.Examples of thermosetting plastics INCLUDE bakelite, urea-formaldehyde resins. |
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