Question

Explain the difference between thermoplastic and thermosetting plastics.

Ans:

Thermoplastic

Thermosetting plastics

(i) These are the plastics which become soft on heating; they can be melted repeatedly by heating.

(ii) These are used for making toys, combs and various types of containers.

(iii) Ex- polythene, PVC, polystyrene, etc.

(i) These are the plastics which do not become soft on being exposed to moderately high temperatures.

(ii) Used for making electrical switches and handles of various utensils.

(iii) Ex- Bakelite, melamine etc.​

Answer 1

ThermoplasticThermosetting PlasticThermoplastic is lower in molecular weight, compared to thermosetting plastic.

Thermosetting Plastic

Thermosetting Plastic is high in molecular weight.