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Question
Which material is used for vulcanisation of rubber?
Which material is used for vulcanisation of rubber?
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Solution
The correct option is B Sulphur
The material used for the vulcanisation of rubber is sulphur.
The reasons why the rubber is vulcanised are as follows:
i) It is soft and sticky and becomes more so at high temperature and brittle at low temperature. That is why, it is used at low-temperature range (280−330) K, where its elasticity is maintained.
ii) It is attacked by oxygen and other oxidising agents.
iii) It has a high water absorption capacity, low tensile strength and low resistance to abrasion.
iv) It is reactive to organic solvents.
Therefore, natural rubber is vulcanised by heating it with about (3−5%) sulphur at (373−415) K.
The material used for the vulcanisation of rubber is sulphur.
The reasons why the rubber is vulcanised are as follows:
i) It is soft and sticky and becomes more so at high temperature and brittle at low temperature. That is why, it is used at low-temperature range (280−330) K, where its elasticity is maintained.
ii) It is attacked by oxygen and other oxidising agents.
iii) It has a high water absorption capacity, low tensile strength and low resistance to abrasion.
iv) It is reactive to organic solvents.
Therefore, natural rubber is vulcanised by heating it with about (3−5%) sulphur at (373−415) K.
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