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先采用阳极氧化法在铝基板上制备了多孔氧化铝(AAO)膜,并以铝基AAO膜作为前驱物,采用化学腐蚀溶液分别制备出了具有纳米结构、微米结构和微纳复合结构表面的薄膜材料结构。利用扫描电子显微镜、荧光分光光度计和电子能量色散谱仪等测试手段分析了薄膜材料表面结构,并在薄膜表面涂覆低表面能物质氟硅烷薄膜研究这些表面结构的疏水性能。研究结果表明:通过控制化学腐蚀时间可以在铝基AAO膜表面分别获取纳米结构、微纳复合结构和微米结构;与未腐蚀的AAO膜表面相比,三种表面结构都有效提高了疏水薄膜表面的疏水性能;在NaOH溶液腐蚀16 min条件下,表面呈现微纳复合结构,具有超疏水性能,水的接触角达到155°。
Porous alumina (AAO) films were first prepared on an aluminum substrate by anodic oxidation. Aluminum-based AAO films were used as precursors. The surface of nano-structured, micro-structured and micro- Thin film material structure. The surface structures of thin films were analyzed by scanning electron microscopy (SEM), fluorescence spectrophotometer and energy dispersive spectroscopy (EDS), and the hydrophobic properties of these surface structures were studied by coating thin films with fluorosilane films with low surface energy. The results show that nano-structure, micro-nano composite structure and micro-structure can be obtained on the surface of AAO film by controlling the chemical etching time. Compared with non-eroded AAO film surface, the three surface structures effectively improve the surface of hydrophobic film The hydrophobic properties of the nanocomposites were as follows: under the conditions of NaOH solution etching for 16 min, the surface showed micro-nano composite structure with superhydrophobicity and the water contact angle reached 155 °.