wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Why can't thermosetting polymers be reused after getting moulded?

A
They become soft at high temperatures and melt.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
They form crosslinks at high temperatures which make them hard and strong
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
They become brittle at high temperatures
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
They cannot be heated as they are very good conductors of heat.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B They form crosslinks at high temperatures which make them hard and strong
Thermosetting polymers are soft and malleable at low temperatures but become hard at higher temperatures.

This is because these polymers tend to form crosslinks between their polymer chains when heated and become hard and strong as a result.
The bonds are very strong.This is why they can't be remoulded by heating them again. They would only get charred and would not soften.

Examples of thermosetting polymers are bakelite and melamine resin.

flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Nature of Intermolecular Forces
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon