石墨表面修饰补强天然橡胶的性能  

Properties of graphite of surface modification reinforcing natural rubber

作　　者：李鑫[1] 熊玉竹[1,2] 崔凌峰 戴骏[1] 王兵辉[1] 吴胜学 LI Xin;XIONG Yuzhu;CUI Lingfeng;DAI jun;WANG Binghui;WU Shengxue(College of Materials and Metallurgy;Guizhou Key Laboratory for Mechanical Behavior and Mierostrueture of Materials,University of Guizhou, Guiyang 550025, China)

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550025 [2]贵州大学贵州省材料结构与强度重点实验,贵州贵阳550025

出　　处：《中国粉体技术》2017年第5期77-82,共6页China Powder Science and Technology

基　　金：贵州省重大专项计划项目;编号:2013-6016;贵州大学研究生教育创新基地项目;编号:CXJD[2014]08

摘　　要：选用偶联剂双-[γ-(三乙氧基硅)丙基]四硫化物(Si69)、异丙基三油酸酰氧基钛酸酯(NDZ-105)、γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH570)对石墨进行表面处理,研究改性石墨复合材料的硫化、力学、耐切割、加工等性能。结果表明:石墨在橡胶基体中的分散性明显提高,石墨和橡胶分子链之间形成的物理缠结点增多;改性材料的100%、300%的定伸强度及拉伸强度均明显提高,耐切割性能均有提升;KH570改性石墨材料的综合性能最好;Payne效应明显减弱,但动态损耗因子略有增大。Different coupling agents such as Si69, NDZ-105 and KH570 were used for surface treatment of graphite. The curing property, mechanical property, cutting resistance and processing property of the modified graphite-NR composites were studied.The results show that the dispersion of graphite modified by coupling agents in natural rubber matrix are improved, the physical entanglements between graphite and rubber chain are increased. Contrast to unmodified graphite-NR composites, the stress at 100%, stress at 300% and tensile strength of modified graphite-NR composites is increased obviously and the cutting loss is decreased. The comprehensive properties of KH570 modified graphite-NR composites is the best. The Payne effect of the modified graphite-NR composites is significantly weakened, but the dynamic loss factor is higher than the unmodified graphite-NR composites.

关 键 词：天然橡胶 石墨 偶联剂 分散性 加工性能 

分 类 号：TQ332[化学工程—橡胶工业]