Question

Why does thermosetting plastic not show reversible process?​

Answer 1

Explanation:

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Thermosetting plastics, like Bakelite or polyurethane, are different because they harden as you heat them. Once they have set, you can't melt them.

that is why it doesn't show reversible change

Answer 2

Answer:

a thermoset, as opposed to a thermoplastic, cannot return to its initial phase, rendering the process irreversible. Thermosets, upon heating, become set, fixed in a specific form. During overheating, thermosets tend to degrade without entering a fluid phasetion: