Which of the following is a thermoplastic material?

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Multiple Choice

Which of the following is a thermoplastic material?

Explanation:
The key idea is the difference between thermoplastics and thermosets. Thermoplastics soften when heated and can be reshaped multiple times, while thermosets cure into a rigid, cross-linked network that cannot be melted and remolded once set. Epoxy resin, Bakelite, and silicone are all formed into permanent cross-linked structures when cured, so they behave as thermosets. Polyester, in common materials practice, is the thermoplastic option because many polyesters (like PET) can be melted and reformed. So among these materials, polyester is the one that fits the thermoplastic behavior.

The key idea is the difference between thermoplastics and thermosets. Thermoplastics soften when heated and can be reshaped multiple times, while thermosets cure into a rigid, cross-linked network that cannot be melted and remolded once set.

Epoxy resin, Bakelite, and silicone are all formed into permanent cross-linked structures when cured, so they behave as thermosets. Polyester, in common materials practice, is the thermoplastic option because many polyesters (like PET) can be melted and reformed. So among these materials, polyester is the one that fits the thermoplastic behavior.

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