气相原位聚合制备碳纳米管/乙丙橡胶复合材料及其性能表征  

Properties of carbon nanotube/ethylene-propylene rubber composites prepared by an in-situ gas phase polymerization method

作　　者：申锴泉 李化毅[2] 王垚[1] SHEN Kai-quan;LI Hua-yi;WANG Yao(Beijing Key Laboratory of Green Reaction Engineering and Technology,Department of Chemical Engineering,Tsinghua University,Beijing 100084,China;Beijing National Laboratory for Molecular Sciences,CAS Key Laboratory of Engineering Plastics,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]清华大学化学工程系,北京市绿色反应工程与工艺重点实验室,北京100084 [2]中国科学院化学研究所,北京分子科学国家实验室工程塑料重点实验室,北京100190

出　　处：《新型炭材料》2020年第1期73-79,共7页New Carbon Materials

基　　金：国家重点基础研究发展计划973项目(2011CB932602).

摘　　要：以碳纳米管为防黏助剂,通过气相原位聚合制备了乙丙橡胶复合材料。加入适量的碳纳米管可以防止聚合过程中由于温度升高导致的橡胶颗粒软化粘结问题,且碳纳米管的加入对乙丙橡胶的熔融温度和热解温度没有影响;与导电炭黑相比,碳纳米管的加入显著提高了复合材料的导电性能和拉伸强度;通过气相原位聚合制备的复合材料,碳纳米管在乙丙橡胶中的分散良好,其导电性能优于机械共混法制备的碳纳米管-橡胶复合材料。Carbon nano tube/ethylene-propylene rubber composites were prepared by gas-phase polymerization of the monomers in an autoclave loaded with carbon nanotubes under agitation.The aggregation of rubber particles during polymerization was effectively prevented by adding more than 6.76 wt%carbon nanotubes that were well dispersed in the composites.The addition of carbon nanotubes had no effect on the melting and thermal decomposition temperatures of the rubber.The composites with carbon nanotubes had a significantly better conductivity and tensile strength than those with conductive carbon black or those obtained with the same formulations using a mechanical blending method.

关 键 词：气相聚合 乙丙橡胶 碳纳米管 复合材料 导电与增强 

分 类 号：TB332[一般工业技术—材料科学与工程]