白炭黑与溶聚丁苯橡胶的键接位置对白炭黑/炭黑/溶聚丁苯橡胶复合材料性能的影响  

Influence of Reaction Site Position between Silica and SSBR on Properties of Silica/Carbon Black/SSBR Composites

作　　者：白玉[1] 赵素合[1,2] 张兴英[1,2] 佟园园[1] 张帅[1] 

机构地区：[1]北京化工大学北京市新型高分子材料制备与加工重点实验室,北京100029 [2]北京化工大学纳米材料先进制备技术与应用科学教育部重点实验室,北京100029

出　　处：《橡胶工业》2012年第1期13-18,共6页China Rubber Industry

基　　金：国家自然科学基金资助项目(50573005);国家"十五"科技攻关计划项目(2004BA310A41)

摘　　要：研究白炭黑/炭黑填充星形溶聚丁苯橡胶(SSBR)和分子链自由末端用硅氧烷基团封端改性星形SSBR(S-SSBR)的物理性能、动态力学性能和微观结构。结果表明:随着偶联剂用量(硅氧烷基团物质的量)的增大,星形SSBR复合材料的拉伸强度先增大后减小,S-SSBR复合材料的拉伸强度先减小后增大;星形SSBR和S-SSBR复合材料的300%定伸应力呈增大趋势,压缩疲劳温升降低,0℃下损耗因子(tanδ)增大,60℃下tanδ值减小。当复合材料中硅氧烷基团的物质的量相同时,与星形SSBR复合材料相比,S-SSBR复合材料定伸应力和0℃下tanδ值的增幅、压缩疲劳温升和60℃下tanδ值的降幅较大,填料的分散性较好。The physical property, dynamic property and microstructure of silica/carbon black filled star-shaped solution-polymerized styrene-butadiene rubber （SSBR） and modified SSBR （S-SSBR）, in which the macromolecular chain ends were capped with siloxane terminal groups,were investigated. The results showed that,as the addition level of coupling agent（mole of siloxane group） increased,the tensile strength of SSBR composites increased at first and then decreased, and the tensile strength of S- SSBR composites decreased at first and then increased; the modulus at 300% elongation of both composites tended to increase,the temperature rise in compression fatigue test decreased,the tanδ value at 0 ℃ increased,and the tanδ value at 60 ℃ decreased. With same addition level of coupling agent,com pared with SSBR composites,the modulus at 300% elongation and tanδ value at 0 ℃ of S-SSBR composites increased more, the compression fatigue temperature rise and tanδ value at 60 ℃ decreased more, and dispersion of fillers was better.

关 键 词：溶聚丁苯橡胶 白炭黑 端基改性 物理性能 动态力学性能 

分 类 号：TQ333.1[化学工程—橡胶工业] TQ330.381