稀土异戊橡胶与天然橡胶共混胶性能的研究  

Study on the Properties of Ployisoprene Rubber synthesized by Rare-Earth Catalysts/Natural Rubber Blends

作　　者：于琦周[1] 李柏林[1] 张新惠[1] 张学全[1] 白晨曦 

机构地区：[1]中国科学院长春应用化学研究所,长春130022 [2]中国石油吉林石化股份有限公司,吉林132011

出　　处：《特种橡胶制品》2011年第2期36-39,68,共5页Special Purpose Rubber Products

摘　　要：对不同共混比的稀土异戊橡胶(NdIR)/天然橡胶(NR)共混胶的硫化特性及物理机械性能进行了系统研究,并与俄罗斯钛体系异戊橡胶(SK-3)及SK-3/NR共混胶的性能进行了对比。结果表明,NdIR/NR的相容性好于SK-3/NR;NdIR/NR共混胶较好地保持了NR原有的高拉伸、高抗撕裂性能,并能有效提高交联密度和拉断伸长率,其焦烧时间得到适当延长;NdIR/NR共混胶没有出现炭黑团聚和微相分离现象,NdIR在某些领域可替代天然橡胶。Curing characteristics of ployisoprene rubber synthesized by rare-earth catalysts（NdIR）/natural rubber（NR）blends with deferent blending ratio as well as physical-mechanical properties of those vulcanizetes were studied,and they were compared with Russian ployisoprene rubber synthesized by titanium catalysts（SK-3） and SK-3/NR blends.The results showed that NdIR / NR blends had better compatibility with carbon black than SK-3/NR blends,and better maintained the original high tensile strength and high anti-tear strength of NR,and the crosslink density and elongation at break were improved,and the scorch time was prolonged,too.According to the distribution of carbon black,there was no phenomenon of carbon black aggregating and micro-phase separation in NdIR /NR blends.NdIR could be used partially or completely to replace NR.

关 键 词：合成橡胶 稀土催化剂 异戊橡胶 天然橡胶 共混胶 

分 类 号：TQ330.1[化学工程—橡胶工业]