【摘要】 采用阴离子表面活性剂十二烷基苯磺酸钠(SDBS)作为辅助刻蚀剂,利用盐酸刻蚀,在铝基质的表面形成了纳米-微米混合的粗糙结构;化学刻蚀后的粗糙表面经过1H,1H,2H,2H-全氟癸烷基三乙氧基硅烷(FDTES)的修饰,形成了接触角大于160°的超疏水表面.扫描电镜表征结果显示,所得到的超疏水表面具有纳米-微米混合结构;基于此,利用气泡辅助刻蚀机理初步解释了二级混合结构产生的原因,认为是坑刻蚀和位错刻蚀的共同作用导致了混合结构的产生.此外,不同pH和长时间暴露实验证明所制备的铝基超疏水表面具有良好的稳定性.更多还原

【Abstract】 The SDBS/HCl mixed solution was used to etch aluminum surface,and some nano-micro mixed structures were appeared on the surface. After modified by 1H,1H,2H,2H-perfluorodecyltriethoxysilane(FDTES),the aluminum surface was reached superhydrophobility,and the water contact angle was more than 160°. The SEM experimental results showed that the aluminum superhydrophobic surface was of nano-micro mixed structure. According to the phenomenon,the bubble assisted etching mechanism(pit-etching and dislocation etching) was used to primarily explain the cause of the two-step mixed structures. Moreover,the experiments of different pH and different exposure time showed the aluminum superhydrophobic was very stable.更多还原