Low Temperature Vulcanization of Chlorosulfonated Polyethylene

Chlorosulfonated Polyethylene의 저온가황반응(低溫加黃反應)

Chlorosulfonated polyethylene(CSM) was moisture-cure after treating them with silane coupling agents such as ${\gamma}-mercapto$ propyl trimethoxy silane, ${\gamma}-glycidoxy$ propyl triethoxy silane and methyl triethoxy silane, 3-(trimethoxy silyl) propyl methacrylate and 3-thiocyanopropyl triethoxy silane. The cure reaction is composed two steps. The first is the reaction between chlorosulfonyl groups of CSM and silane coupling agents. The second is the formation of cross-links which are siloxane linkage. The linkage is formed by the condensation of silanol groups which are produced by the hydrolysis of alkoxysilyl groups. CSM was mixed with MPS etc., and dilaurate dilaurate as catalyst on two open mill and the compounds were lured in hot water at $70^{\circ}C$ Physical properties of moisture-cured CSM was measured. CSM was effectively moisture-cured and r-mercapto propyl trimethoxy silane and r-glycidoxy propyl trimethoxy silane were capable of the vulcanizing agents.