Silica and carbon black (CB) co-filled rubber composite was widely used for tire tread and other rubber products because of combined advantages of binary fillers, such as low hysteresis, good abrasion resistance, and reinforcement. Numerous studies have been focused on the filler–rubber interaction with the aim of obtaining optimum performances. To investigate the effect of modification on properties of rubber composite, modified silica and CB co-filled rubber composite was prepared with a multi-functional silane coupling agent, 2-aminoethyl-2-(3-triethoxysilylpropyl)aminoethyl disulfide (ATD). Such modification significantly enhanced the filler–rubber interaction and improved the filler dispersion. For the modified composites, the state of cure, hardness, tensile strength before and after aging, stress at 300% elongation, tear strength, abrasion resistance, rebound resilience, compression set, temperature rise, and the value of dynamic loss coefficient ranging from −20°C to 80°C were significantly improved, especially with low ATD dosage (3.0 phr). This modification provides an effective route to prepare silica and CB co-filled rubber composites with improved mechanical properties and dynamic mechanical properties. Graphical abstract Silica and carbon black co-filled rubber composite was modified by multi-functional silane coupling agent. Such modification significantly enhanced the filler–rubber interaction and improved mechanical properties and dynamic mechanical properties.

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二氧化硅和炭黑共填充橡胶复合材料改性对力学性能的影响分析

二氧化硅和炭黑（CB）共填充的橡胶复合材料由于具有二元填料的综合优点（如低滞后性，良好的耐磨性和补强性）而广泛用于轮胎胎面和其他橡胶产品。为了获得最佳性能，许多研究都集中在填料与橡胶的相互作用上。为了研究改性对橡胶复合材料性能的影响，采用多功能硅烷偶联剂2-氨基乙基-2-（3-三乙氧基甲硅烷基丙基）氨基乙基二硫化物（ATD）制备了改性二氧化硅和CB共填充橡胶复合材料。这种改性显着增强了填料与橡胶的相互作用，并改善了填料的分散性。对于改性复合材料，固化状态，硬度，老化前后的拉伸强度，300％伸长率下的应力，撕裂强度，耐磨性，回弹力，压缩永久变形，温度升高以及动态损耗系数的值在-20°C至80°C范围内得到显着改善，尤其是在使用低ATD剂量（3.0 phr）的情况下。这种改性为制备具有改善的机械性能和动态机械性能的二氧化硅和CB共填充橡胶复合材料提供了有效的途径。用多功能硅烷偶联剂改性了图形化的二氧化硅和炭黑共填充橡胶复合材料。这种改性显着增强了填料与橡胶的相互作用，并改善了机械性能和动态机械性能。这种改性为制备具有改善的机械性能和动态机械性能的二氧化硅和CB共填充橡胶复合材料提供了有效的途径。用多功能硅烷偶联剂改性了图形化的二氧化硅和炭黑共填充橡胶复合材料。这种改性显着增强了填料与橡胶的相互作用，并改善了机械性能和动态机械性能。这种改性为制备具有改善的机械性能和动态机械性能的二氧化硅和CB共填充橡胶复合材料提供了有效的途径。用多功能硅烷偶联剂改性了图形化的二氧化硅和炭黑共填充橡胶复合材料。这种改性显着增强了填料与橡胶的相互作用，并改善了机械性能和动态机械性能。