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合成橡胶工业
CHINA SYNTHETIC RUBBER INDUSTRY
2000 Vol.23 No.3 P.173-175

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不饱和羧酸锌盐对NBR的增强

袁新恒 彭宗林 张勇 张祥福 张隐西

摘要:通过氧化锌与甲基丙烯酸或丙烯酸的中和反应,在丁腈橡胶(NBR)中原位生成了甲基丙烯酸锌或丙烯酸锌,研究了过氧化物硫化NBR的力学性能和交联结构。结果表明,原位合成法甲基丙烯酸锌或丙烯酸锌增强NBR可得到与直接加入法类似的增强效果,硫化胶具有高强度、高硬度和高伸长率;对交联结构的分析表明,硫化胶的良好性能与其含离子交联键有密切关系。
关键词:氧化锌;甲基丙烯酸;丙烯酸;丁腈橡胶;增强
中图分类号:TQ333.7 文献标识码:A
文章编号:1000-1255(2000)03-0173-03

Reinforcement of NBR with zinc salts of unsaturated carboxylic acids

Yuan Xinheng,Peng Zonglin,Zhang Yong,Zhang Xiangfu and Zhang Yinxi
(Polymeric Materials Research Institute,Shanghai Jiaotong University)

Abstract:The insitu preparation of zinc methylacrylate or zinc acrylate through mixing zinc oxide(ZnO) and methylacrylic acid (MAA)or acrylic acid(AA) in NBR rubber vulcanized with peroxide was studied.The results showed that ZnO/MAA(AA)had a great effect of reinforcement on the properties of vulcanizated NBR, and their amounts played an important role in influcing the crosslink density and structure of vulcanizated NBR as well as the mechanical properties. The change in the tensile strength of vulcanizated NBR was related to the variation of the salt crosslink density.
Keywords:zinc oxide;methylacrylic acid;acrylic acid;nitrile rubber; reinforcement

基金项目:高等学校博士学科点专项科研基金项目。
作者简介:袁新恒,27岁,博士生。已发表论文15篇。
袁新恒(上海交通大学高分子材料研究所,200240)
彭宗林(上海交通大学高分子材料研究所,200240)
张勇(上海交通大学高分子材料研究所,200240)
张祥福(上海交通大学高分子材料研究所,200240)
张隐西(上海交通大学高分子材料研究所,200240)

参 考 文 献

1,Martin F S, Melvin T, Pieroni J K. Solid golf ball[P]. U S, US 4 266 722. 1981
2,Nishimura K, Saito T, Asada M, et al. The reinforcement hydrogenated NBR by in situ polymerization of zinc methacrylate[A]. SAE Int Cong & Exp[C], Detriot, MI, 1989
3Yuan Xinheng, Zhang Yinxi, Zhang Yong, et al.Reinforcement of NBR with metallic s,alts of unsaturated carboxylic acids[J].合 成 橡 胶 工 业 ,1999, 22(1):55
4,袁新恒,张隐西,张勇等.甲基丙烯酸镁对橡胶的增强作用[J].橡胶工业,1999,46(5):281

收稿日期:1999-06-22;修订日期:2000-01-23