硅烷偶联剂原位改性白炭黑/溶聚丁苯橡胶复合材料的流变性能和力学性能研究  

Rheological and Mechanical Properties of Silica/SSBR Composites Modified In-situ by Silane Coupling Agent

作　　者：郑涛 邵红琪 吴晓辉 牛其强 ZHENG Tao;SHAO Hongqi;WU Xiaohui;NIU Qiqiang(Shandong Fengyuan Tire Manufacturing Co.,Ltd,Zaozhuang 277300,China;Shandong Institute of Scientific and Technical Information,Ji’nan 250101,China)

机构地区：[1]山东丰源轮胎制造股份有限公司,山东枣庄277300 [2]山东省科学技术情报研究院,山东济南250101

出　　处：《橡胶工业》2022年第9期652-658,共7页China Rubber Industry

基　　金：山东省重大科技创新工程项目(2018CXGC0605)。

摘　　要：制备3种硅烷偶联剂(Si69,Si75,NXT)原位改性白炭黑/溶聚丁苯橡胶(SSBR)复合材料,研究硅烷偶联剂对白炭黑/SSBR复合材料流变性能和力学性能的影响。结果表明:硅烷偶联剂NXT在降低善白炭黑填料网络化程度方面比偶联剂Si69和Si75的效果更明显;硅烷偶联剂NXT改性白炭黑/SSBR复合材料的剪切储能模量较低,Payne效应较弱,加工性能较好,损耗因子和活化能较小,拉伸储能模量对温度依赖性较弱,硬度、拉伸强度和拉断伸长率相当,撕裂强度较大,白炭黑分散性优异,白炭黑与橡胶之间的相互作用较强。In this study,the silica/solution polymerized styrene butadiene rubber(SSBR)composites were preparedby in-situ modification using three kinds of silane coupling agents(Si69,Si75,NXT),and the effects of the silane coupling agents on the rheological and mechanical properties of the composites were studied.The results showed that the silane coupling agent NXT was more effective than the coupling agents Si69 and Si75 in reducing the network degree of the silica fillers.Compared with the silica/SSBR composites modified by silane coupling agents Si69 and Si75,the shear storage modulus of the silica/SSBR composites modified by silane coupling agent NXT was lower,the Payne effect was weaker,the processability was better,the loss factor and activation energy were smaller,the temperature dependence of the tensile storage modulus was weaker,the hardness,tensile strength and elongation at break were equivalent,but the tear strength was higher,the dispersion of the silica was excellent,and the interaction between the silica and rubber was stronger.

关 键 词：白炭黑 溶聚丁苯橡胶 硅烷偶联剂 原位改性 PAYNE效应 流变性能 力学性能 损耗因子 

分 类 号：TQ330.383[化学工程—橡胶工业] TQ333.1