what is thermoplastic and thermosetting plastic
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Explanation:
Thermoplastics have secondary bonds between molecular chains. Thermosetting plastics have primary bonds between molecular chains and held together by strong cross-links. Thermoplastics have low melting points and low tensile strength. Thermosetting plastics have high melting points and tensile strength.
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Thermoplastic:
A thermoplastic is a material, usually a plastic polymer, which becomes more soft when heated and hard when cooled.
examples:- polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyamides, polyesters, and polyurethanes.
Thermosetting:
A thermosetting polymer, resin, or plastic, often called a thermoset, is a polymer that is irreversibly hardened by curing from a soft solid or viscous liquid prepolymer or resin. Curing is induced by heat or suitable radiation and may be promoted by high pressure, or mixing with a catalyst.
examples:- epoxy, silicone, polyurethane and phenolic
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