白炭黑对炭黑/丁苯橡胶复合材料耐疲劳性能的影响  

Effect of Silica on Fatigue Resistance of Carbon Black/SBR Composite

作　　者：黄舟[1] 于晓波[1] 吴友平[1,2] 

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]北京化工大学有机无机复合材料国家重点实验室,北京100029

出　　处：《橡胶工业》2015年第2期85-90,共6页China Rubber Industry

基　　金：教育部新世纪优秀人才计划项目(NCET-10-0202)

摘　　要：研究白炭黑对炭黑/丁苯橡胶(SBR)复合材料耐疲劳性能的影响。结果表明:与炭黑/SBR复合材料相比,白炭黑/炭黑/SBR胶料的t10延长,交联密度下降,硫化胶的100%和300%定伸应力减小,拉断伸长率增大;在相同应变下,SBR复合材料的疲劳寿命延长,疲劳裂纹增长速率对撕裂能的敏感程度差别不大;白炭黑粒径越小,比表面积越大,结构度越低,对SBR复合材料的耐疲劳性能越有利。The effect of silica on the fatigue resistance of carbon black / SBR composite was investigated.The results showed that,compared with carbon black / SBR composite,the t10 of silica / carbon black / SBR compound was extended,the crosslink density decreased,the modulus at 100% and 300% elongation of the vulcanizates decreased,and the elongation at break increased. With silica,the fatigue life of SBR composite was extended at the same strain level. However,the sensitivity of tearing energy on fatigue crack growth rate of the composite changed little. It was found that the silica with smaller the particle size,larger specific surface area and lower structure,was more effective to improve the fatigue resistance of SBR composite.

关 键 词：丁苯橡胶 炭黑 白炭黑 复合材料 耐疲劳性能 

分 类 号：TQ333.1[化学工程—橡胶工业] TQ330.38