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What are thermoplastics and thermosetting???

A Thermoplastic, also known as a thermosoftening plastic, is a polymer that becomes pliable or moldable above a specific temperature, and returns to a solid state upon cooling. Most thermoplastics have a high molecular weight, whose chains associate through intermolecular forces; this property allows thermoplastics to be remolded because the intermolecular interactions spontaneously reform upon cooling. In this way, thermoplastics differ from thermosetting polymers, which form irreversible chemical bonds during the curing process; thermoset bonds break down upon melting and do not reform upon cooling.


Thermosetting plastics are rigid polymer plastic materials, that are resistant to higher temperatures than the ordinary thermoplastics. These materials are normally made up of lines of molecules, which are heavily cross-linked.



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