反式聚辛烯橡胶改性天然橡胶/顺丁橡胶共混胶的性能  

Properties of natural rubber/cis-1,4-polybutadiene rubber blend modified with trans-polyoctene rubber

作　　者：李丹丹 刘振学 高波 张文洁 李兰阁 葛怀涛 任学斌 郝福兰 LI Dan-dan;LIU Zhen-xue;GAO Bo;ZHANG Wen-jie;LI Lan-ge;GE Huai-tao;REN Xue-bin;HAO Fu-lan(Shandong Chambroad Sinopoly New Materials Co Ltd,Binzhou 256500,China;Shandong Huaju Polymer Materials Co Ltd,Binzhou 256500,China;Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization,Binzhou 256500,China)

机构地区：[1]山东京博中聚新材料有限公司,山东滨州256500 [2]山东华聚高分子材料有限公司,山东滨州256500 [3]山东省烯烃催化与聚合重点实验室,山东滨州256500

出　　处：《合成橡胶工业》2021年第1期23-27,共5页China Synthetic Rubber Industry

摘　　要：研究了反式聚辛烯橡胶(TOR)改性天然橡胶(NR)/顺丁橡胶(BR)(二者质量比80/20)共混胶的性能。结果表明,采用5~15份(质量,下同)TOR改性NR/BR混炼胶的门尼黏度逐渐降低、Payne效应基本不变,共混胶的焦烧时间和工艺正硫化时间延长、硫化速率减慢。相比NR/BR硫化胶,NR/BR/TOR硫化胶的拉伸强度、扯断伸长率和撕裂强度明显减小,回弹性能提高,100%定伸应力、硬度和滚动阻力略有增大,压缩生热有所升高,耐磨和耐疲劳裂纹引发性能得到改善。用TOR改性NR/BR共混胶时的最佳用量为5份。The properties of trans-polyoctene rubber(TOR)modified natural rubber(NR)/cis-1,4-polybutadiene rubber(BR)(mass ratio 80/20)blends were studied.The results showed that the Mooney viscosity of NR/BR blends modified by 5-15 phr(mass,the same below)TOR gradually decreased,but Payne effect remained basically unchanged,the scorch time and optimum curing time of the blends were prolonged,and curing rate was slowed down.Compared with NR/BR vulcanizates,the tensile strength,elongation at break and tear strength of NR/BR/TOR vulcanizates decreased significantly,the resilience increased,the modulus at 100%,hardness and rolling resistance increased slightly,the compression heat-build up increased,and the wear resistance and fatigue crack initiation resistance were improved.When NR/BR blends were modified with TOR,the optimum amount was 5 phr.

关 键 词：反式聚辛烯橡胶 天然橡胶 顺丁橡胶 共混胶 硫化特性 物理机械性能 耐疲劳性能 耐磨性能 

分 类 号：TQ333.99[化学工程—橡胶工业]