Thermoplastic materials are those materials which

Do not become hard with the application of heat and pressure and no chemical change occurs
Are flexible and can withstand considerable wear under suitable conditions
Are formed into shape under heat and pressure and results in a permanently hard product
Are used as a friction lining for clutches and brakes

Correct Answer: Do not become hard with the application of heat and pressure and no chemical change occurs

Explanation:

Thermoplastic materials is a type of plastic material that can be cooled and heated several times without any change in their chemistry or mechanical properties.

Examples of Thermoplastic ::

polyethylene,

polypropylene,

polyvinyl chloride,

polystyrene,

polybenzimidazole,

acrylic,

nylon and

teflon

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Thermoplastic materials are those materials which

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