Rubber vulcanization


The process of converting plastic rubber into elastic r […]

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 a semi-finished product made of raw rubber, and heat and heat the temperature at a predetermined temperature in a vulcanization tank. The linear molecules of the raw rubber crosslink each other by forming a "sulfur bridge" to form a network structure of the body, so that the plastic compound becomes a vulcanizate having high elasticity. Since the cross-linking bond is mainly composed of sulfur, it is called "vulcanization". With the rapid development of synthetic rubber, many varieties of vulcanizing agents include organic polysulfides, peroxides, and metal oxides in addition to sulfur. Therefore, any process that converts the plastic rubber of the linear structure into a three-dimensional network structure is called a vulcanizing agent. Any substance that can "bridge" in the rubber material is called a "vulcanizing agent". The vulcanized elastic rubber is called vulcanized rubber, which is also called soft rubber. Vulcanization is one of the most important processes in rubber processing. Various rubber products must be vulcanized to achieve the desired performance. Unvulcanized rubber has no use value in use, but the degree of sulfur vulcanization is not enough. The vulcanization time is not enough to achieve the best condition and the sulfur vulcanization time is exceeded, and the performance is significantly degraded, which causes the rubber performance to decrease. Therefore, the vulcanization time must be strictly controlled during the production process to ensure that the vulcanized rubber product has the best performance and the longest service life.


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