液体聚异戊二烯橡胶对天然橡胶/反式聚异戊二烯橡胶并用胶性能的影响  

Effect of LIR on Properties of NR/TPI Blends

作　　者：刘欢欢 庞松 于洋 吴友平[1] LIU Huanhuan;PANG Song;YU Yang;WU Youping(Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学北京市新型高分子材料制备与加工重点实验室,北京100029

出　　处：《橡胶工业》2022年第9期659-666,共8页China Rubber Industry

摘　　要：研究液体聚异戊二烯橡胶(LIR-50)用量对未填充和填充填料的天然橡胶(NR)/反式聚异戊二烯橡胶(TPI)(并用比85/15)并用胶硫化特性、结晶性、物理性能和动态力学性能的影响。结果表明:NR/TPI并用胶的t10和t90随着LIR-50用量的增大而延长,且加工流动性变好;在NR/TPI并用胶中TPI的结晶受到抑制,LIR-50用量对NR/TPI并用胶的结晶性影响不大;随着LIR-50用量的增大,NR/TPI并用胶的邵尔A型硬度、300%定伸应力、拉伸强度及储能模量减小;加入3份LIR-50的NR/TPI并用胶的撕裂强度最大、综合物理性能较好;LIR-50加入对NR/TPI并用胶的耐磨性能、抗湿滑性能以及滚动阻力基本无影响。The effects of the amount of liquid polyisoprene rubber(LIR-50)on the vulcanization characteristics,crystallinity,physical properties and dynamic mechanical properties of the unfilled and filled NR/TPI(85/15 of blend ratio)blends were studied.The results showed that,the t10 and t90 of the NR/TPI blends were extended with the increase of the amount of LIR-50,and the processing fluidity became better.The crystallization of TPI in the NR/TPI blend was inhibited,and the amount of LIR-50 had little effect on the crystallinity of the NR/TPI blends.With the increase of the amount of LIR-50,the Shore A hardness,tensile stress at 300%elongation,tensile strength and storage modulus of the NR/TPI blends decreased.The NR/TPI blends with 3 phr LIR-50 had the largest tear strength and better comprehensive physical properties.The addition of LIR-50 had little effect on the wear resistance,wet skid resistance and rolling resistance of the NR/TPI blends.

关 键 词：液体聚异戊二烯橡胶 天然橡胶 反式聚异戊二烯橡胶 硫化特性 结晶性 物理性能 动态力学性能 

分 类 号：TQ333.3[化学工程—橡胶工业] TQ333.9TQ332.6