硫化体系对氢化丁腈胶热氧老化性能的影响  

The effect of different curing system on heat aging properties of hydrogenated nitrile rubber

作　　者：欧阳春发[1] 施宇涛[1] 高群[1] 单晓茜[1] 郑康生[1] 

机构地区：[1]上海应用技术学院材料科学与工程学院,上海200235

出　　处：《弹性体》2011年第5期26-29,共4页China Elastomerics

基　　金：上海市教委重点学科基金资助项目(J51504);上海市教委科技基金资助项目(10YZ179)

摘　　要：系统研究了不同硫化体系对氢化丁腈胶(HNBR)力学性能和热氧老化性能的影响。结果表明:采用过氧化物/硫磺(S)体系得到的胶料其综合性能优于过氧化物体系得到的胶料,在100份HNBR中加入5份过氧化二异丙苯(DCP)和0.5份S,即DCP与S并用时,硫化胶拉伸强度可以达到23.85 MPa,在160℃×72 h热氧老化后仍可以达到20.99 MPa。热氧老化性能以DCP/S为7/0.5时最为优异。Hydrogenated nitrile rubber（HNBR） is a highly-saturated rubber,containing acrylonitrile,butadiene and a small amount of hydrogenated butadiene chain in the molecule chain,and has a wide application at high temperature.Therefore,it is very important to study the heat aging properties of HNBR.In the present,the effect of different curing system on the oxygen aging and mechanical properties of HNBR was investigated.The results showed that the properties of HNBR prepared by peroxide/sulfur system are better than those by using peroxide system.When the ratio of HNBR,DCP and sulfur is 100/5/0.5,corresponding to use DCP and sulfur together,vulcanized HNBR can get the tensile strength of 23.85 MPa before heat aging and the tensile strength of 20.99 MPa after heat aging at temperature of 160 ℃ for 72 h.When the proportion of DCP/S is 7/0.5,hydrogenated nitrile rubber has the best oxygen aging property.

关 键 词：硫化 氢化丁腈胶 老化 性能 

分 类 号：TQ333.7[化学工程—橡胶工业]