why thermosetting plastis doesn't become soft and melt on heating
Answers
Answer:
Thermoplastics can be softened by heat but thermosetting plastics cannot be softened by heat.
This is due to the difference in their structure. Due to this, on heating, the individual polymer chains can slide over one another and thermoplastic material becomes soft and ultimately melts.
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Answer:
melt easily when heated; after cooling again they can re-establish the same weak intermolecular forces and be reshaped. Thermosetting polymers: have cross-linked covalent bonds between the chains. do not melt at all when heated, due to these cross-links.
Thermosetting plastics do not melt when heated. They tend to char and burn when heated, but they are resistant to much higher temperatures than thermosoftening plastics. They are used to make electrical plugs, which must not melt, even if there is a malfunction and the wiring inside gets hot.