分子结构对稀土催化聚丁二烯橡胶性能的影响  

Influence of Molecular Structural Parameters on the Properties of Nd-based Butadiene Rubber

作　　者：韩明哲 杨广明 闫蓉 杨亮 于琦周 胡雁鸣 张学全 HAN Ming-zhe1,2 , YANG Guang-ming1,2, YAN Rong1,2 , YANG Liang1,2 , YU Qi-zhou3 , HU Yan-ming3 , ZHANG Xue-quan3(1. CNPC Research Institute of Dushanzi Petrochemical, Dushanzi 833699,China~ 2. Xinjiang Rubber Plastic Materials Laboratory, Dushanzi 833699,China; 3. CAS Key Laboratory of Synthetic Rubber, Changchun Institute of Applied Chemistry, Changchun 130022,China)

机构地区：[1]中国石油独山子石化分公司研究院,独山子833699 [2]新疆橡塑材料实验室,独山子833699 [3]中科院合成橡胶重点实验室长春应用化学研究所,长春130022

出　　处：《特种橡胶制品》2017年第6期1-4,共4页Special Purpose Rubber Products

基　　金：国家"973"计划(2015CB654700(2015CB674702))

摘　　要：研究了不同分子结构参数(微观结构和相对分子质量分布指数)稀土催化聚丁二烯橡胶(Nd-BR)的性能。结果表明,当Nd-BR相对分子质量及其分布相近时,其力学性能随着顺-1,4结构含量的增加而提高,当胶样的顺-1,4含量和门尼粘度相似时,窄分布Nd-BR的力学性能优于宽分布样品。经RPA测试,因其形成的网络化结构和重组能力更强,顺式结构含量低、窄分布样品的Payne效应弱于高顺式含量的样品,表现出更优异的压缩生热和磨耗性能。The properties of neodymium-based butadiene rubber（Nd-BR）having different molecular structural parameters,namely microstructure and molecular weight distribution,were investigated.The results showed that when Nd-BR possessed about the same molecular weight and molecular weight distribution,the mechanical properties increased with the increment of cis-1,4 content,and Nd-BR with narrow molecular weight distribution exhibited higher mechanical properties than its broad counterpart with similar cis-1,4 content and Mooney viscosity value.Determined by rubber processing analyzer（RPA）,the Payne effect of the sample with narrow molecular weight distribution and low cis-1,4 content was weaker compared to that of Nd-BR having high cis-1,4 content owing to the strong network structure and reorganization ability,leading to better heat build-up and abrasion performance.

关 键 词：ND-BR 顺-1 4结构 相对分子质量分布指数 力学性能 

分 类 号：TQ333.2[化学工程—橡胶工业]