门尼黏度对反式-1,4-聚异戊二烯及其并用胶性能的影响  

Effects of Mooney viscosity on properties of trans-1,4- polyisoprene and its blends

作　　者：孟凡良[1] 黄宝琛[1] 姚薇[1] 刘争男[1] 段恒范[1] 

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《合成橡胶工业》2005年第1期31-35,共5页China Synthetic Rubber Industry

基　　金：国家"八六三"计划新材料领域"九五"资助项目(863 715 0 0 70 0 40 )

摘　　要：研究了门尼黏度对反式 - 1,4 -聚异戊二烯 (TPI)及丁苯橡胶 (SBR) /TPI并用胶性能的影响。结果表明 ,TPI生胶的邵尔A型硬度随其门尼黏度的增大而增大 ,当门尼黏度为 70左右时 ,TPI生胶的拉伸强度、扯断伸长率、10 0 %定伸应力、撕裂强度及结晶度出现最大值 ;随着TPI门尼黏度的增大 ,其硫化胶的力学性能提高 ,Goodrich压缩生热减小 ,撕裂强度在门尼黏度为 90左右时存在最大值 ,TPI的最佳门尼黏度为 5 0～ 10 0 ;TPI硫化胶的热氧老化以断链反应为主 ,门尼黏度越高 ,混炼难度越大 ,同时硫化胶的耐老化性能越差。TPI的门尼黏度越高 ,SBR/TPI并用胶 6 0℃的损耗因子越低 ,0℃的损耗因子基本不变 ,其硫化胶的力学性能较好 ,但混炼困难 ,TPI适宜的门尼黏度为 5 0～ 10 0。Effects of Mooney viscosity of TPI on the performance of TPI and SBR/TPI blends were investigated. The results showed that the Shore A hardness increased with the increase of Mooney viscosity.The tensile strength,elongation at break,modulus at 100%, tear strength and crystallinity of TPI reached the largest value when Mooney viscosity was about 70.The mechanical property of TPI vulcanizate increased and Goodrich heat build-up decreased with the increase of Mooney viscosity,peak value of tear strength could be obtained when Mooney viscosity was about 90, the optimal scope of Mooney viscosity was 50～100 for TPI vulcanizate.The aging performance decreased with the increase of Mooney viscosity.The SBR/TPI vulcanizate had good performance when Mooney viscosity of TPI was high,tan δ at 60 ℃ was lower and tan δ at 0 ℃ changed little with the increase of Mooney viscosity of TPI,but the mixing process became difficult.The optimal Mooney viscosity of TPI was 50～100 to SBR/TPI vulcanizate.

关 键 词：反式-1 4-聚异戊二烯 门尼黏度 丁苯橡胶 并用 硫化胶 力学性能 耐老化性能 

分 类 号：TQ330[化学工程—橡胶工业]