Abstract Modified silica-based isoprene rubber (IR) composite has been designed and prepared by using a multi-functional silane, 2-aminoethyl-2-(3-triethoxysilylpropyl)aminoethyl disulfide (ATD), as coupling agent. Such modification significantly improved the dispersity of silica in the corresponding composites, as verified by SEM observation. And the hardness, tensile strength, stress at definite elongation, tear strength and temperature rise as well as the value of dynamic loss coefficient ranging from 0 oC to 80 oC of silica/IR vulcanized composites, are significantly improved, especially with low ATD dosage (2-4 phr). This modification of silica-based IR composite by employing ATD as coupling agent provides a facile and effective method to prepare silica-based rubber composites with improved mechanical properties and low hysteresis.

中文翻译：

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多功能硅烷改性二氧化硅基异戊二烯橡胶复合材料的制备及其力学和动态力学性能

摘要 以多功能硅烷、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)为偶联剂，设计并制备了改性二氧化硅基异戊二烯橡胶(IR)复合材料。SEM 观察证实，这种改性显着提高了二氧化硅在相应复合材料中的分散性。并且白炭黑/红外硫化复合材料的硬度、拉伸强度、定伸长应力、撕裂强度和温升以及动态损耗系数值在 0 oC 到 80 oC 范围内都有显着提高，尤其是在 ATD 用量较低的情况下（ 2-4 份）。这种通过使用 ATD 作为偶联剂对二氧化硅基红外复合材料进行改性提供了一种简便有效的方法来制备具有改善的机械性能和低滞后的二氧化硅基橡胶复合材料。