Preparation method for anti-ice surfaces of bionic coupling water collecting aluminum alloys

Abstract

The invention relates to a preparation method for anti-ice surfaces of bionic coupling water collecting aluminum alloys; the preparation method is enlightened by water collecting structures at the back parts of desert beetles; and the surfaces of the bionic coupling water collecting aluminum alloys are prepared by adopting a method of coupling hydrophobic areas with hydrophilic areas. In the method, firstly, a laser ablation machining process is adopted to prepare micro-column array structures with a certain depths on the surfaces of aluminum alloys; prepared PDMS and super-hydrophobic kaolinparticle mixtures are rotationally coated in the micro-column array structures, and are placed in a drying box of 100 DEG C for heating by 120 min; and finally, the laser ablation is performed on thesurfaces again to prepare the anti-ice surfaces of the bionic coupling water collecting aluminum alloys. The preparation method is simple in operation, controllable in experimental parameter and low in cost; the method can be used for preparing the anti-ice surfaces of the bionic coupling water collecting aluminum alloys; and the surfaces achieve better ice resistance, excellent mechanical stability and aging resistance.

Description

technical field [0001] The invention belongs to the technical field of surface modification of metal materials, and in particular relates to a preparation method of a bionic coupled water-collecting aluminum alloy anti-icing surface. Background technique [0002] The phenomenon of surface freezing and sticking has always seriously affected various fields of social production and people's life, such as transportation, agriculture, electricity, water conservancy, aviation, etc., posing a serious threat to production efficiency, reliability and safety. At present, the research on freeze-stick phenomenon is mainly based on interface adhesion theory and simple empirical control technology, mainly including: thermal deicing method, mechanical deicing method and other passive deicing methods, but these methods also bring Many problems, such as high energy consumption, high risk and will cause surface damage and accelerate equipment aging. Therefore, research on new anti-icing tech...

AI Technical Summary

Problems solved by technology

By adjusting the experimental process, the surface structure and hydrophobicity can be adjusted. However, the superhydrophobic surface prepared by these methods does not mean that it has better anti-icing performance.

And a large number of experiments have shown that as time goes by, tiny water droplets will pin and gather in the micro-nano gaps, eventually causing the hydrophobic surface to lose its anti-icing ability

Therefore, how to deal with the superhydrophobic anti-icing surface exposed to supersaturated humidity for a long time, the tiny water droplets will pin and gather in the micro-nano gaps, and finally the problem that the hydrophobic surface loses the anti-icing ability needs to be solved urgently.

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