防老型硅烷偶联剂改性天然橡胶/白炭黑复合材料的性能研究  

Study on Performance of Anti-aging Silane Coupling Agent Modified Natural Rubber/silica Composites

作　　者：孙阿彬 张天舒 吴章柱 张晓潭 姚彬彬[1] 阚泽 SUN A-bin;ZHANG Tian-shu;WU Zhang-zhu;ZHANG Xiao-tan;YAO Bin-bin;KAN Ze(Key Laboratory of Bio-based Polymer Materials,Shandong Provincial Education Department,School of Polymer Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,Shandong;Anhui Zhonghan Polymer Technology Co.,Ltd.,Ningguo 242300,Anhui)

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 [2]安徽中翰高分子科技有限公司,安徽宁国242300

出　　处：《有机硅材料》2021年第6期8-14,共7页Silicone Material

基　　金：国家自然科学基金(51803104);中国博士后科学基金(2019M652154)。

摘　　要：基于防老剂防护橡胶老化以及偶联剂改性白炭黑的机理,利用对苯二胺与3-缩水甘油醚氧丙基三乙氧基硅烷发生开环反应,合成出一种新型的防老型硅烷偶联剂(Si-GD)。采用Si-GD改性天然橡胶/白炭黑复合材料,研究了Si-GD用量对天然橡胶/白炭黑复合材料交联密度、微观形貌、力学性能、耐老化性能、耐磨性能的影响。结果表明,Si-GD改性后复合材料的撕裂强度、拉伸强度、定伸应力、回弹性、邵尔A硬度、耐热空气老化性能都明显增加;采用4份Si-GD比采用4份双-[r-(三乙氧基硅)丙基]四硫化物改性的天然橡胶/白炭黑复合材料具有更好的耐磨性能。A novel anti-aging silane coupling agent(Si-GD)was synthesized by the ring-opening reaction of p-phenylenediamine and 3-glycidoxypropyltriethoxysilane based on the mechanism of aging protection and coupling agent modification on silica.Natural rubber/silica composites were modified by Si-GD.The effects of different amounts of Si-GD on crosslinking density,micro-morphology,mechanical properties,aging resistance and wear resistance on natural rubber/composites were studied.The results show that the tear strength,tensile strength,modulus,resilience,Shore A hardness and hot air aging resistance of Si-GD modified composites are significantly increased.The natural rubber/silica composites modified with 4 phr of Si-GD has better wear resistance than that modified with 4 phr of Si-69.

关 键 词：防老型硅烷偶联剂 天然橡胶 白炭黑 耐老化性能 

分 类 号：TQ264.12[化学工程—有机化工]