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以硅氧烷为疏水剂,采用浸渍法在具有开放及封闭微结构的金属铝板上制备了超疏水表面,系统考查了表面微结构设计对材料疏水及防冰性能的影响。结果表明,超疏水表面静态接触角随结除冰次数的增加而减少,滚动角随结除冰次数的增加而增大,且在多个结冰除冰循环后,表面开放微结构的金属铝板丧失其超疏水性,表面封闭微结构的金属铝板仍保持其超疏水性。进一步实验研究表明,在多个结冰除冰循环后,在相同结冰条件下,水滴在表面为开放微结构的金属铝板上的结冰时间远长于表面为封闭结构的金属铝板。
Hydrophobic agents were used to prepare superhydrophobic surfaces on aluminum metal plates with open and closed microstructures by impregnation method. The effects of surface microstructure design on hydrophobic and anti-icing properties of the materials were systematically investigated. The results show that the static contact angle of the superhydrophobic surface decreases with the increase of the number of deicing, the rolling angle increases with the increase of the number of deicing, and after several icing cycles, the microstructure of the aluminum plate with open microstructure Lost its superhydrophobicity, the surface of the closed microstructure of aluminum metal remains superhydrophobic. Further experimental studies have shown that the freezing time of droplets on metal aluminum plates with open microstructures under the same icing conditions is much longer than that of metal aluminum plates with closed surfaces on the surface after multiple icing cycles.