【摘要】 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。更多还原

【Abstract】 Nano-SiO2 powder was coated on the polished and laser etched surface by the sol-gel and dipcoating method to prepare hydrophobic/superhydrophobic warship aluminium alloy surface.The durability of the hydrophobic/superhydrophobic surface was tested by using the method of the sample load and friction slide on sand paper.The results show that the contact angle of polished surface increases with increasing SiO2 concentration up to 150.8°,but the surface has high adhesive force for the droplet.When the length of sliding reaches 10 m,the contact angle is 72.3°less than the original.The surface fabricated by laser etched grid or dot microstructures exhibits both superhydrophobic and low adhesive force.The grid surface has greater contact angle as high as 155.4°,and smaller roll angle,the minimum is only 0.34°.When the length of sliding reaches 10 m,the surface is still hydrophobic,and the grid microstructure has greater durability.更多还原