Although raw rubber has some useful application characteristics, it also has many disadvantages, such as low strength and low elasticity; Cold makes it hard, hot makes it sticky; Easy to aging, etc. As early as the 1840s, it was found that rubber can be crosslinked by heating together with sulfur. Therefore, until now, although rubber can be crosslinked not only with sulfur, but also with many other chemical crosslinking agents and physical and chemical methods, in the rubber industry, it has always been customary to call rubber crosslinking "curing", while the plastic processing industry sometimes calls crosslinking reaction curing. Vulcanization has greatly improved the properties of raw rubber, expanded the application scope of rubber, and laid the foundation for large-scale industrial production and application of rubber.

Rubber vulcanization is one of the main processes of rubber products processing, and also the last process in rubber products production. In this process, rubber undergoes a series of complex chemical changes, from plastic compound to highly elastic or hard cross-linked rubber, so as to obtain more perfect physical and mechanical properties and chemical properties, and improve and expand the use value and application range of rubber materials. Therefore, vulcanization is of great significance to the manufacture and application of rubber and its products.

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https://www.siliconerubbers.net/product-standard-grade-htv-silicone-rubber.html