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材料工程  2015 

疏水/超疏水船用铝合金表面制备及其耐久性

DOI: 10.11868/j.issn.1001-4381.2015.01.009, PP. 49-53

Keywords: 疏水,超疏水,接触角,滚动角

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Abstract:

采用溶胶-凝胶法将SiO2纳米粒子涂覆在抛光和经激光刻蚀的船用铝合金表面,制备疏水/超疏水铝合金表面.利用使试样负载并在砂纸上摩擦滑行的方法测试疏水/超疏水表面的耐久性,结果表明抛光表面的接触角随SiO2浓度的增高而增大,最大可达150.8°,但表面对水滴具有强黏附力.当摩擦滑行距离达到10m时,接触角小于铝合金表面原始接触角72.3°;激光刻蚀的网格和点阵微结构表面既具有超疏水特性又呈现出低黏附力;且网格表面的接触角更大,最大达155.4°,滚动角更小,最小仅为0.34°.当摩擦滑行距离达到10m时,表面依然疏水,且网格微结构的耐久性更强.

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