原位改性三元乙丙橡胶炭黑混炼胶与天然橡胶共混胶的性能  

Properties of blends of in-situ modified carbon black loaded ethyleneproplylene-diene rubber and natural rubber

作　　者：齐兴国[1] 李荣勋[1] 王进[2] 杨军[2] 刘光烨[1] 

机构地区：[1]青岛科技大学新材料研究重点实验室,山东青岛266042 [2]株洲时代新材料科技股份有限公司,湖南株洲412007

出　　处：《合成橡胶工业》2008年第4期281-285,共5页China Synthetic Rubber Industry

摘　　要：研究了三元乙丙橡胶(EPDM)炭黑混炼胶经偶联剂Si-69原位改性前后与天然橡胶(NR)共混胶的性能。结果表明,在EPDM炭黑混炼胶的原位改性过程中,Si-69在与炭黑表面作用的同时会与EPDM发生活性反应。这不仅增大了EPDM与炭黑间的亲和力,而且使EPDM的硫化反应活性增强,从而改善了共混硫化胶的物理机械性能。动态力学性能测试和扫描电子显微镜观察结果均表明,改性后的EPDM炭黑混炼胶与NR的硫化相容性增强。The properties of natural rubber（ NR）/ ethylene-proplylene-diene rubber （ EPDM ） blends and NR/EPDM modified by Si-69 blends were studied. The results showed that the active reaction between coupling agent and carbon black resulted in an increase of the bound rubber content, in addition, the covulcanization of NR/EPDM blends were improved by the active reaction between coupling agent and EPDM, and these resulted in a substantial increase of the tensile strength. The results of dynamic mechanical and morphological studies of the NR/ EPDM blend vulcanizates showed that the covulcanization of NR and EPDM blends was improved.

关 键 词：三元乙丙橡胶 天然橡胶 原位改性 偶联剂 相容性 

分 类 号：TQ330.1[化学工程—橡胶工业]