Home > Community > What is the use of peroxide in the cross linking of silicone rubbers?
Upvote

13

Downvote
+ Rubber
+ Peroxides
+ Chemistry
Posted by
KeychaineX

What is the use of peroxide in the cross linking of silicone rubbers?

David Daminic  Follow

->Sulphur

->Peroxide

These are the two majorly used crosslinking/vulcanising/curing agent.

They are used for creating cross-linked structure between the rubber chains. So better the cross-linked structure better the mechanical properties we achieve.

The advantage of peroxide is that the peroxide forms free radicals during the polymerisation process unlike sulphur which attaches itself in the crosslinking chain.

Peroxide forms free radicals with the rubber monomer and so the monomers attack other monomer free radicals which are highly reactive. Thus creating a far purer polymer chains. So the rubber we obtain from peroxide vulcanisation has better properties.

More

Upvote

VOTE

Downvote
David Petersen  Follow

Peroxide is the curing agent for most of the rubbers including silicon. Peroxide generally helps in quick crosslinking or curing .

More

Upvote

VOTE

Downvote