为了提高环氧树脂涂料的综合性能,以KH-560硅烷偶联剂对纳米SiO2进行原位改性,制备了无溶剂型纳米SiO2/环氧树脂复合涂料.用FT-IR及分散性试验研究了纳米SiO2原位改性的效果;探讨了改性纳米SiO2对复合涂层表面形貌、力学性能、耐紫外光老化性、耐蚀性能的影响.结果表明:KH-560硅烷偶联剂的有机分子链段成功地键合在纳米SiO2粒子表面,改性后的纳米SiO2粒子能均匀地分散在二甲苯中;纳米SiO2能够显著改善环氧树脂涂层的力学性能,当其含量为3％时最好;复合涂层耐紫外光老化及耐腐蚀性比环氧树脂涂层有较大的提高.本无溶剂型纳米SiO2/环氧树脂复合涂层对基材有良好的保护作用.
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