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以异丙醇铝和正硅酸乙酯为主要原料,采用溶胶-凝胶分步水解法,通过引入有机硅烷甲基三乙氧基硅烷和表面活性剂十六烷基三甲基溴化氨,并用乙二醇甲醚替换铝溶胶中水作为对比,制备了SiO2-MTES-CTAB-Al2O3纳米复合薄膜.通过FT-IR、可见光透射光谱分析、薄膜表面接触角测量及机械性能测试,研究了化学组成、煅烧温度和有无乙二醇甲醚替换对复合薄膜的影响.结果表明:不用乙二醇甲醚替换效果更好,经400 ℃热处理后不同配比复合薄膜在可见光区的透光率均大于85%,且不影响复合薄膜的疏水性,由于铝氧化物颗粒、十六烷基三甲基溴化氨和甲基三乙氧基硅烷的存在,所制备的纳米复合薄膜的硬度及耐摩擦性能均有较大提高,改善了力学性能,从而获得了具有良好的疏水性、透过率及硬质的SiO2-MTES-CTAB-Al2O3纳米复合薄膜.

参考文献

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