Question

define thermoplastics
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Answer 1

Answer:

Thermoplastics are defined as polymers that can be melted and recast almost indefinitely.

or

In simple words-thermoplastic materials are types of plastic which become soft when they are heated

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Answer 2

Answer:

Thermoplastics 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 thermoplastics include acrylic, polyester, polypropylene, polystyrene, nylon and Teflon.