Question

hardened and glass like resion
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Answer 1

Answer:

Unlike other organic resins used in composites for aircraft, automobiles, and electronic circuits, a new thermoplastic resin can be reshaped at high temperatures and is recyclable. strength, dimensional stability, and chemical or thermal resistance than thermosetting resins.

Answer 2

polyester and polyurethane resins both cure very hard. When fully cured, they can have the clearness and hardiness