Rubber vulcanization process

The process of converting plastic rubber into elastic rubber is called vulcanization. It is to add a certain amount of vulcanizing agent such as sulfur, vulcanization accelerator, etc. to the semi-finished product made of raw rubber, and conduct it in a vulcanization tank. It is heated and insulated at a specified temperature so that the linear molecules of the raw rubber are cross-linked with each other to form a three-dimensional network structure by generating "sulfur bridges", thereby turning the plastic rubber into a highly elastic vulcanized rubber.

Because the cross-linking bonds are mainly composed of sulfur, it is called "sulfide". With the rapid development of synthetic rubber, there are now many types of vulcanizing agents. In addition to sulfur, there are also organic polysulfides, peroxides, metal oxides, etc. Therefore, any process that can transform plastic rubber with a linear structure into elastic rubber with a three-dimensional network structure is called vulcanization. Substances that can play a "bridging" role in rubber materials are called "vulcanizing agents."

Vulcanized elastic rubber is called vulcanized rubber, also called soft rubber, commonly known as "rubber". Vulcanization is one of the most important processes in rubber processing. Various rubber products must be vulcanized to obtain ideal performance. Unvulcanized rubber has no value in use, but the degree of under-sulfur vulcanization is not enough? The vulcanization time is not enough to reach the over-sulfur vulcanization time. If the vulcanization time is exceeded, the performance will decline, which will cause the performance of the rubber to decline.

Therefore, the vulcanization time must be strictly controlled during the production process to ensure the service life of the vulcanized rubber products.