Design Of The Vulcanization System and The Application of Sulfide Accelerator

Release time：2013-06-04

The rubber vulcanization system including the sulfurization agent, promoting agents and active agent, generally speaking the rubber crosslinking related to how much of the main agent of vulcanized rubber , of course,the increasing of the groups containing promote agent can also with single or double sulfur key in the form of sulfur key to improve parallel density, general sulfur yellow vulcanization system in promoting agent less, so the size of the crosslinking density is mainly dependent on the amount of sulfur yellow.

The role of the promote agent is to reduce sulfur yellow crosslinking temperature, speed up the sulfur yellow curing speed, actual it is the role of a catalyst, different types of promoting agents activation energy is different, so the rubber type sulfide is endless also and same, such as, EPDM, IIR for unsaturated double bond of the less so slow speed of sulfide, general use of highly reactive two amino acid salt content and promote the agent or autumn lamb kind of give priority to promoting agents, and unsaturated double bond of the much NR, IR, BR, SBR, NBR for curing speed, use commonly Margaret class or time of sulfonylurea amide promoting agents give priority to promote agent. The choice of promoting agents are usually contains some of the groups acid sulfide accelerator, can also participate in sulfide groups of sulfide reaction, helps to reduce the vulcanizates of sulfide in after the nets material, in order to reduce the spray frost phenomenon.

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