Preparation method of a bionic coupled water-collecting aluminum alloy anti-icing surface

Abstract

The invention relates to a method for preparing an anti-icing surface of a bionic coupling water-collecting aluminum alloy. Inspired by the water-collecting structure on the back of a desert beetle, the method of coupling a hydrophobic area with a hydrophilic area is used to prepare a bionic coupling water-collecting aluminum alloy surface. In this method, a laser ablation process is used to prepare a micro-pillar array structure with a certain depth on the surface of the aluminum alloy; then the prepared PDMS and superhydrophobic kaolin particle mixture is spin-coated on the micro-pillar array structure, placed It was heated in a drying oven at 100°C for 120 minutes; finally, the surface was subjected to laser ablation treatment again to prepare this biomimetic coupling water-collecting aluminum alloy anti-icing surface. The preparation method of the present invention is simple to operate, the experimental parameters are controllable and the cost is low. This method can be used to manufacture the anti-icing surface of bionic coupled water-collecting aluminum alloy, so that the surface can obtain better anti-icing performance, good mechanical stability and anti-aging performance .

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.

Images