The knowledge of vulcanizing agent

- Oct 10, 2018-


The vulcanization system additive is mainly composed of a vulcanizing agent, a promoter and an active agent, and the amount thereof accounts for about 10% of the amount of the raw rubber. Depending on the fullness of the constituent rubbers, various vulcanization systems such as sulfur, metal oxides, peroxides and amines can be used.


Depending on the functional requirements of the rubber and rubber products, different vulcanization systems such as sulfur, peroxide, hydrazine, resin, and metal oxide may be used. In the meantime, the sulfur vulcanization system is further divided into a general vulcanization system, a useful vulcanization system, and a semi-useful vulcanization system.

 

Sulfur vulcanization system is widely used in general-purpose rubber and semi-universal rubber. Metal oxide vulcanization system is mainly used for neoprene (CR), antimony and resin vulcanization system is mainly used for butyl rubber (IIR), peroxidation. The resin and resin vulcanization systems are primarily used for ethylene propylene rubber (EPR), natural rubber (NR) and styrene butadiene rubber (SBR). Special rubber [such as polysulfide rubber (LP), chlorosulfonated polyethylene rubber (CSM), chlorinated polyethylene rubber (CM), fluororubber (FKM), silicone rubber (MVQ), fluorosilicone rubber (FVMQ), etc.] It is all full of rubber and does not contain double bonds. Sulfur does not have cross-linking effect. Therefore, non-sulfur vulcanization systems such as metal oxides, peroxides, and organic amine salt vulcanization systems are required. In recent years, acrylate rubber (ACM) has chosen sulfur sulfur curing system at all.