Science, asked by debendraadhikari482, 6 months ago

[a] Answer the following question in short. (any two)
1) What do you meaning by thermosetting plastics? Give two examples of it.
2) Explain spontaneous combustion with an example.

Answers

Answered by vamsirocky072

3

Answer:

Thermosetting polymers are cross-linked or heavily branched polymers which get hardened during the molding process. These plastics cannot be softened again on heating. Examples of thermosetting plastics include bakelite, urea-formaldehyde resins.
The bursting into flame of a mass of material as a result of chemical reactions within the substance, without the addition of heat from an external source. Oily rags and damp hay, for example, are subject to spontaneous combustion

Answered by ssujatha1234567

0

Explanation:

some plastics which,when moulded once,can not

be softened by heating.These are called thermosetting plastic

example: plastic bag etc

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