高岭土径厚比对丁苯橡胶复合材料动态性能的影响研究  

Influence of kaolin aspect ratio on dynamic mechanical property of styrene butadiene rubber composite

作　　者：张士龙[1] 刘钦甫[2] 张克楠 刘庆贺 刘霖松 Zhang Shilong Liu Qinfu Zhang Kenan Liu Qinghe Liu Linsong(College of Chemical and Environmental Engineering,China University of Mining and Technology, Beijing 100083 School of Geoscience and Surveying Engineering,China University of Mining Technology, Beijing 100083)

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083 [2]中国矿业大学(北京)地球科学与测绘工程学院,北京100083

出　　处：《化工新型材料》2017年第10期124-126,共3页New Chemical Materials

基　　金：国家自然科学基金重点项目(51034006)

摘　　要：利用不同产地高岭土存在径厚比的差异,将7个不同产地的高岭土通过乳液共混法制备了高岭土/丁苯橡胶复合材料,研究了径厚比对高岭土在丁苯橡胶中分散形态的影响。并结合橡胶分子链-高岭土3种作用模型,研究了"连续式"和"孤岛式"两种分散形态对复合材料动态性能的影响机理。研究表明,径厚比较大的高岭土倾向于在复合材料中形成"连续式"的分散网络,径厚比较小的高岭土则倾向于"孤岛式"分散。当高岭土在橡胶基体中呈现"连续式"分散网络时,板状高岭土将丁苯橡胶基体分割成彼此相互独立的单元,同时提高了复合材料的储能模量及损失模量。Seven kaolin from different areas were introduced into styrene butadiene rubber（SBR）by latex blending method,to investigate the influence of kaolin aspect ratio on dispersed network due to the different aspect ratio.Combining with four models of rubber chain-kaolin interaction,the effects of kaolin ＂continuous-network＂and ＂island-network＂dispersion on the dynamic mechanical property of SBR were also studied.The results showed that,kaolin with large aspect ratio was inclined to disperse in the structure of＂continuous-network＂,and kaolin particles with small aspect ratio were inclined to disperse in the structure of＂island-network＂.When kaolin particles dispersed in the structure of＂continuous-network＂,the rubber matrix was separated into independent part,which increased the storage modulus and loss modulus at the same time.

关 键 词：高岭土 径厚比 丁苯橡胶 动态力学性能 分散网络 

分 类 号：TB332[一般工业技术—材料科学与工程] TQ333.1[化学工程—橡胶工业]