界面偶联剂KH550在氧化石墨烯/白炭黑纳米杂化填料中的应用研究

白炭黑用γ-氨丙基三乙氧基硅烷（偶联剂KH550）进行液相改性，再与氧化石墨烯（GO）悬浮液机械混合，混合液通过喷雾干燥法制备偶联剂KH550改性的GO/白炭黑纳米杂化填料（GO@SiO2），考察偶联剂KH550用量对溶聚丁苯橡胶（SSBR）/顺丁橡胶（BR）/GO@SiO2复合材料性能的影响。结果表明：当偶联剂KH550相对于白炭黑质量比为7%和10%时，GO@SiO2的热稳定较好；偶联剂KH550能显著提高SSBR/BR/GO@SiO2复合材料的交联密度、填料分散性、耐磨性能并降低生热；当偶联剂KH550相对于白炭黑质量比为5%时，复合材料的交联密度最大，综合物理性能最好；当偶联剂KH550相对于白炭黑质量比为10%时，复合材料的耐磨性能最好且生热最低。;The silica was modified by γ-aminopropyltriethoxysilane（coupling agent KH550），then mechanically mixed with the graphene oxide（GO） suspension，and coupling agent KH550 modified GO/Silica nano-hybrid filler（GO@SiO2） was prepared by spray-drying mixture．The effect of the coupling agent KH550 amount on the properties of the solution-polymerized styrene-butadiene rubber（SSBR）/butadiene rubber（BR）/GO@SiO2 composite was investigated．The results showed that，when the mass fraction of coupling agent KH550 was 7% and 10% of silica，the thermal stability of GO@SiO2 was better.The coupling agent KH550 could significantly improve the crosslink density，filler dispersibility，wear resistance and reduce heat build-up of composites．When the mass fraction of coupling agent KH550 was 5% of silica，the crosslink density was the highest and the comprehensive physical properties of the composite were the best．When the mass fraction of coupling agent KH550 was 10% of silica，the wear resistance of the composite was the best and the heat build-up was the lowest