What is thermoplastic

thermoplastic is a type of plastic made up of polymer resins that becomes a soft material when it is heated and becomes hard when it is cooled. ... When thermoplastics are heated their physical property changes and they become a homogenized liquid and can be reshaped and resized.

denoting substances (especially synthetic resins) that become plastic on heating and harden on cooling, and are able to repeat these processes.

A thermoplastic, or thermosoft plastic, is a plastic polymer material that becomes pliable or moldable at a certain elevated temperature and solidifies upon cooling. Most thermoplastics have a high molecular weight. The polymer chains are associated with intermolecular forces, which weaken rapidly with increased temperature, yielding a viscous liquid.

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lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

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