采用化学刻蚀法, 在钠钙硅玻璃表面进行化学刻蚀。以正硅酸乙酯(TEOS)为前驱体制备纳米二氧化硅颗粒, 以十六烷基三甲基溴化铵(CTAB)控制其团聚度, 然后在化学刻蚀后的玻璃表面喷涂不同团聚度的纳米二氧化硅颗粒, 构建多级微纳结构, 进一步经全氟癸基三乙氧基硅烷(PFTS)修饰, 获得超疏水玻璃表面。利用扫描电子显微镜、接触角测量仪等测试方法对涂层的微观形貌、润湿性等进行了表征。结果表明: 所制备的玻璃表面具备牢固的超疏水特性, 经过600目砂纸循环摩擦50次后仍可保持水接触角为156.13°±2°。玻璃表面的超疏水性归因于低表面能物质PFTS和表面微纳结构的共同作用, 其较好的耐磨性归因于玻璃表面刚性的微米级粗糙结构与喷涂的纳米级SiO2颗粒在玻璃表面堆积形成的结构相互交错, 构成了更为耐磨的微-纳结构。

Chemical etching was used to etch the surface of soda lime silicate glass with TEOS as a precursor to prepare nano-silica particles and CTAB to control the degree of agglomeration, and then the chemically etched glass surface was sprayed with nano-silica particles with different agglomeration degrees to construct a multi-level micro-/nano-structure, which was further modified with PFTS to obtain a superhydrophobic glass surface. The micro-morphology and wettability of the coating were characterized by scanning element microscopy and contact angle measurement. The results show that the prepared glass surface has the superhydrophobic properties, and the water contact angle of 156.13°±2° can still maintain after 50 cycles of rubbing with 600 grit sandpaper. The superhydrophobicity of the glass surface is attributed to a combined effect of the presence of low surface energy substance PFTS and the surface spherical structure, and its better wear resistance is since the rigid micron-scale rough structure of the glass surface and the structure formed by the sprayed nano-scale silica particles on the glass surface are interlaced, thus forming a more wear-resistant micro-/nano-structure.