In order to obtain acrylonitrile butadiene Styrene copolymer (ABS) composites with good dispersion and interface properties, graft macromolecular coupling agents were synthesized by atom transfer radical polymerization (ATRP) using styrene (St), butyl methacrylate (BMA) andγ-methacryloxypropyltri- methoxy silane (KH-570) as monomers. Infrared spectroscopy (FT-IR), ultraviolet spectroscopy (UV), nuclear magnetic resonance spectroscopy (1H-NMR) and gel permeation chromatography (GPC) were used to characterize the macromolecular coupling agents, and the effects of agents on ABS/ SiO2composites were studied. The results show that interface adhesion is significantly improved after treating SiO2 surface with macromolecular coupling agents and the impact strength can reach to 23.48 kJ⋅m−2. Compared with composites without coupling agents, the impact strength increases by 43.87% for the composites treated with macromolecular coupling agents.%为改善二氧化硅(SiO 2)在丙烯腈-丁二烯-苯乙烯共聚物(ABS)复合材料中的分散性和获得良好的界面特性。以苯乙烯(St)、甲基丙烯酸丁酯(BMA)、γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH-570)为单体，通过原子转移自由基聚合(ATRP)的方法合成接枝形大分子偶联剂。通过红外光谱(FT-IR)、紫外光谱(UV)、核磁共振(1H-NMR)、凝胶渗透色谱(GPC)对大分子偶联剂进行表征。并对比研究不同分子量的大分子偶联剂对ABS/ SiO2复合材料性能的影响。实验结果表明，经大分子偶联剂表面处理SiO2后，复合材料的界面相容性得到显著改善，冲击强度达到23.48 kJ⋅m−2，比未经偶联剂处理复合材料提高了43.87%。
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