Question

Define thermosetting and thermoplastics polymers? Give two examples of thermosetting and thermoplastics polymers?

Answer 1

Answer:

• Polymers which are cross-linked or heavily branched polymers which get

        hardened during the molding process are called thermosetting

        polymers.

• They cannot be softened again on heating

Eg: urea-formaldehyde resins, bakelite.  

• Polymers which are linear (slightly branched) long chain polymers, which can be repeatedly softened and hardened on heating are called thermoplastic polymers. Hence, they can be modified again and again.                                                                                            

Eg: polystyrene, polythene.

Answer 2

Define thermoplastics and thermosetting polymers with two examples of each. Thermoplastic polymers are linear (slightly branched) long chain polymers, which can be repeatedly softened and hardened on heating. ... Examples of thermosetting plastics include bakelite, urea-formaldehyde resins

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