黄原酸酯基硅烷偶联剂的合成及在丁苯橡胶复合材料中的应用  

Synthesis of Xanthate-Based Silane Coupling Agent and Its Application in Styrene-Butadiene Rubber/Silica Composites

作　　者：王花平 王知瀚 崔金云 姚彬彬[1] 阚泽 孙阿彬 Huaping Wang;Zhihan Wang;Jinyun Cui;Binbin Yao;Ze Kan;Abin Sun(Key Laboratory of Biobased Polymer Materials,Shandong Provincial Education Department,School of Polymer Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学高分子科学与工程学院山东省教育厅生物基高分子材料重点实验室,山东青岛266042

出　　处：《高分子材料科学与工程》2023年第2期1-9,共9页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51803104);高分子材料工程国家重点实验室开放课题(sklpme2019-4-28)。

摘　　要：采用相转移催化法制备了不同烷基链长的乙基黄原酸酯基丙基三乙氧基硅烷(EXS)和辛基黄原酸酯基丙基三乙氧基硅烷(OXS),利用2种黄原酸酯基硅烷偶联剂改性白炭黑并补强丁苯橡胶,研究了复合材料的加工性能、硫化性能、力学性能、耐磨性能、压缩生热、动态力学性能等,同时制备了双-[γ-(三乙氧基硅)丙基]四硫化物(Si-69)和封端型巯基硅烷偶联剂(NXT)改性的复合材料作为对比,探究了新型偶联剂取代NXT和Si-69在橡胶工业中应用的可行性。结果表明,长烷基链的OXS改性的复合材料门尼黏度最低,加工安全性高但硫化速度略慢;新型偶联剂改性的复合材料的力学性能、硬度和耐磨性都优于NXT改性的复合材料,同时滚动阻力较低;采用EXS改性的白炭黑在橡胶基体中的分散性较好,填料-橡胶间的相互作用较大。Xanthate silane coupling agents ethyl xanthate propyl triethoxysilane(EXS)and octyl xanthate propyl triethoxysilane(OXS)with different alkyl chain lengths were prepared by phase transfer catalysis.Two xanthate-based silane coupling agents were used to modify silica and reinforce styrene-butadiene rubber,the processing properties,vulcanization properties,mechanical properties,wear resistance,compression properties,dynamic mechanical properties of styrene-butadiene rubber/silica composites were studied.At the same time,the composites modified with bis-[γ-(triethoxysilyl)propyl]tetrasulfide(Si-69)and end-capped mercaptosilane coupling agent(NXT)were prepared as comparison to explore the feasibility of the new coupling agents to replace NXT and Si-69 in rubber industry.The results show that the OXS-modified composites with long alkyl chains have the lowest Mooney viscosity,high processing safety but a slightly slower vulcanization speed,and the composites modified with EXS have a low processing safety but the vulcanization speed is faster;the mechanical properties,hardness and wear resistance of the composite modified with the new coupling agents are higher than those of the NXT modified composites,and the rolling resistance is lower;the silica modified with EXS has the better dispersion in rubber matrix,and the higher interaction between filler and rubber.

关 键 词：相转移催化法 黄原酸酯基硅烷偶联剂 丁苯橡胶 白炭黑 硫化性能 

分 类 号：TQ333.1[化学工程—橡胶工业]