首页> 外文期刊>Journal of Applied Polymer Science >Modulating silica-rubber interface by a biorenewable urushiol derivative. Synthesis, surface modification, and mechanical and dynamic mechanical properties of vulcanizates therefrom
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Modulating silica-rubber interface by a biorenewable urushiol derivative. Synthesis, surface modification, and mechanical and dynamic mechanical properties of vulcanizates therefrom

机译:通过生物愈性尿精衍生物调节二氧化硅 - 橡胶界面。 从中硫化胶的合成,表面改性和机械和动态机械性能

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摘要

Hydrogenated urushiol (i.e., 3-pentadecylcatechol) can be used to directly modify silica particles via surface complexation with silicon. The degree of surface coverage can be varied by experimental conditions. Mooney viscosity and Payne effect studies of uncured rubber compounds show that dispersion of silica filler completely covered by hydrogenated urushiol in the absence of coupling agent bis[3-(triethoxysilyl) propyl] tetrasulfide (TESPT) is as effective as dispersion of standard unmodified silica in the presence of TESPT under otherwise identical mixing conditions. Low bound rubber content and observation of filler flocculation at the early stage of vulcanization demonstrate that the filler-rubber interaction is physical in nature as the result of surface modification by hydrogenated urushiol. When silica is partially covered by hydrogenated urushiol, it can be used in conjunction with TESPT. Judicial combination of partially covered silica and TESPT can give optimal properties to the resultant vulcanizate, including reduced Payne effect and improved cut resistance while maintaining other key parameters the same in comparison with a standard silica-TESPT reinforced rubber. (C) 2017 Wiley Periodicals, Inc.
机译:氢化尿道(即3-五戊基酰醇)可用于通过与硅的表面络合直接改性二氧化硅颗粒。表面覆盖度可以通过实验条件改变。未固化橡胶化合物的门尼粘度和Payne效应研究表明,在没有偶联剂BIS的情况下,在没有偶联剂BIS的情况下完全覆盖二氧化硅填料的分散[3-(三乙氧基甲硅烷基)丙酮(TESPT),如标准未改性二氧化硅的分散在其他相同的混合条件下存在特点。硫化早期液体下阶段的低结合橡胶含量和填充絮凝的观察表明,由于氢化尿道的表面改性的结果,填充橡胶相互作用是物质的。当二氧化硅被氢化尿道部分覆盖时,它可以与TESPT结合使用。部分覆盖二氧化硅和躯干的司法组合可以向所得硫化酸盐提供最佳性质,包括降低的Payne效果和改善的切割阻力,同时保持与标准二氧化硅-TESPT增强橡胶相同的其他关键参数。 (c)2017 Wiley期刊,Inc。

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