what you mean by thermosetting plastic and thermoplastic
Answers
A thermosetting polymer (also called a thermosetting plastic or thermosetting resin) is a polymer which becomes irreversibly hardened upon being cured. Curing is caused by the action of heat or suitable radiation and may be promoted by high pressure or the use of a catalyst. It results in extensive cross-linking between polymer chains to give an infusible and insoluble polymer network.[1] A cured thermosetting polymer is called a thermoset.
Thermosetting resins are usually malleable or liquid prior to curing, and are often designed to be molded into their final shape, or used as adhesive. Once hardened a thermoset resin cannot be re-melted in order to be reshaped, this can be contrasted with thermoplastic polymers, which can generally be re-melted and reshaped.
Thermoset, or thermosetting, plastics are synthetic materials that strengthen during being heated, but cannot be successfully remolded or reheated after their initial heat-forming. This is in contrast to thermoplastics, which soften when heated and harden and strengthen after cooling.