新癸酸钕系顺丁橡胶的性能

张新惠　 李柏林　 蔡洪光　

摘　要：研究了以新癸酸钕作主催化剂聚合得到的顺丁橡胶(Ln-BR)的性能。结果表明：特性粘数为2.70dL/g、门尼粘度为37的h-BR不仅混炼行为良好，滚动阻力较低，而且硫化胶的拉伸性能、耐磨性能以及热老化性能等均优于特性粘数大于5.dL/g、门尼粘度高于50的Ln-BR，但是其抗疲劳性和生热性逊于后者；特性粘数大于5.00dL/g的h-BR，混炼时应添加适量芳烃操作油。
关键词：稀土催化剂；顺丁橡胶；硫化；机械性能
分类号：TQ 333.2　文献标识码：A
文章编号：1000-1255(2001)01-0018-04

Properties of Cis-1, 4-polybutadiene rubber by neodymium caprate catalyst system

Zhang Xinhui（Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022）　
Li Bailin（Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022）　
Cai Hongguang（Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022）　

Abstract：The properties of cis-1,4 -polybu-tadiene rubber polymerized by neodymium caprateas main catalyst system(Ln-BR) were stud-ied. The results showed that not only mill behaviorwas good for Ln-BR with intrinsic viscosity2. 70 dL/g and Mooney viscosity 37, but also me-chanical properties, abrasion and thermal aging re-sistance of its vulcanizate were excellent, superior tothose of intrinsic viscosity and Mooney viscositymore than 5.00 dL/g and 50 respectively. But itsresistance to tension fatigue and heat build-upwere slightly inferior to those of the latter. Someamount of aromatic operating oil should be addedduring mixing for Ln- BR of intrinsic viscositymore than 5.00 dL/g. The dynamic experimentshowed that the rolling resistance of Ln- BR waslower than that of cis-1, 4-polybutadiene ruuberpolymerized by nickel catalyst system.
Keywords：rare-earth catalyst;cis-1,4-polybutadiene rubber;vulcanization;mechanicalproperty