Abstract With the help of soluble amino modifiers, the vulcanization delay of kaolinite/SBR composites is investigated to shorten the optimum curing time of the filled rubber system based on the latex compounding method (LCM). Compared to the traditional dry blending method, the LCM had better kaolinite dispersion in the rubber matrix. The two different amino modifiers, i.e., quaternary ammonium salt ((CH3)3-N-CH2-) and amino silane (H2N–(CH2)2–NH–(CH2)2–NH–(CH2)3–) were selected in the in-situ modification through two different routes: physical adsorption and chemical bonding. The Moving Die Rheometer revealed that the curing process with the amino group could accelerate the crosslinking reaction, and the kaolinite grafted KH892 nanocomposite showed the best vulcanization performance. An improvement in the curing rate and mechanical properties of kaolinite/SBR composite is ascribed to the outstanding distribution and chemical bonding of nanokaolinite lamellae in the vulcanizate. Furthermore, SEM, HR-TEM, and DMA results demonstrated that both the dispersion of kaolinite in the vulcanizate and the wet skid resistance of the kaolinite/SBR hybrid materials are superior to the composite made by the dry blending method.

中文翻译：

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基于乳胶复合法的原位有机氨基改性高岭石/SBR纳米复合材料的硫化、界面相互作用及动态力学性能

摘要 借助可溶性氨基改性剂，研究了高岭石/丁苯橡胶复合材料的硫化延迟，以缩短基于胶乳复合法（LCM）的填充橡胶体系的最佳硫化时间。与传统的干混方法相比，LCM 具有更好的高岭石在橡胶基体中的分散性。选择了两种不同的氨基改性剂，即季铵盐 ((CH3)3-N-CH2-) 和氨基硅烷 (H2N–(CH2)2–NH–(CH2)2–NH–(CH2)3–)通过两种不同的途径进行原位改性：物理吸附和化学键合。动模流变仪显示，含氨基的硫化过程可以加速交联反应，高岭石接枝的KH892纳米复合材料表现出最好的硫化性能。高岭石/SBR 复合材料的硫化速率和机械性能的提高归因于纳米高岭石片层在硫化胶中的出色分布和化学结合。此外，SEM、HR-TEM 和 DMA 结果表明，高岭石在硫化胶中的分散性和高岭石/SBR 混合材料的抗湿滑性均优于通过干混法制成的复合材料。