The fluorine rubber nanocomposites were prepared by using the silane‐coupling agents treated silica and diatomite, in which 3‐amino propyltriethoxysilane (KH550), 3‐mercapto‐propyl trimethoxysilane (KH590), and bis‐(γ‐triethoxysilylpropyl)‐tetrasulfide (Si69) of the coupling agent were used as the filler modifiers to increase the compatibility between filler and fluorine rubber. The structure and morphology of the composites were investigated by Fourier transform infrared spectroscopy and scanning electron microscopy. The T_g and thermal stability of the composites were investigated by dynamic mechanical analysis and thermogravimetric analysis. The results showed that the best coupling agent was KH550 and 2 phr (parts per hundred rubber). The KH550‐modified compound filler was crosslinked with fluorine rubber, and the compatibility between filler and fluorine rubber was improved and further confirmed to improve the thermal properties of fluorine rubber with the KH550‐modified filler. J. VINYL ADDIT. TECHNOL., 26:55–61, 2020. © 2019 Society of Plastics Engineers

中文翻译：

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硅烷偶联剂处理的二氧化硅和硅藻土填料改性的氟橡胶复合材料

氟橡胶纳米复合材料是通过使用硅烷偶联剂处理的二氧化硅和硅藻土制备的，其中3-氨基丙基三乙氧基硅烷（KH550），3-巯基丙基三甲氧基硅烷（KH590）和双（γ-三乙氧基甲硅烷基丙基）四硫化物（Si69）的偶联剂用作填充剂，以提高填充剂与氟橡胶之间的相容性。通过傅立叶变换红外光谱和扫描电子显微镜研究了复合材料的结构和形貌。的Ť_克通过动态力学分析和热重分析研究了复合材料的热稳定性。结果表明，最佳偶联剂为KH550和2 phr（每百份橡胶中的份数）。KH550改性的复合填料与氟橡胶交联，填料和氟橡胶之间的相容性得到改善，并进一步证实可以改善KH550改性填料的氟橡胶的热性能。J.乙烯基添加物。TECHNOL。，26：55–61，2020.©2019塑料工程师协会