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.
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)
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))
关键词
ND-BR
顺-1
4结构
相对分子质量分布指数
力学性能
neodymium-based butadiene rubber
cis-1,4 structure
molecular weight distribution
mechanical property
