Stable super hydrophobic self-cleaning surface and double-light-beam interference-method preparation method thereof

Abstract

The invention provides a stable super hydrophobic self-cleaning surface and a double-light-beam interference-method preparation method thereof. According to the stable super hydrophobic self-cleaningsurface and the double-light-beam interference-method preparation method thereof, a polished and cleaned aluminum alloy sample is fixed on a processing platform, a double-light-beam interference method of interference superposition of two coherent laser beams is adopted to perform erosion on the surface of the aluminum alloy sample, one aluminum alloy sample of a periodicity controllable size micro-nano composite structure is obtained, finally, the aluminum alloy sample is immersed in a stearic acid solution for surface modification treatment, and the stable super hydrophobic self-cleaning aluminum alloy surface is obtained. By means of the stable super hydrophobic self-cleaning surface and the double-light-beam interference-method preparation method thereof, the double-light-beam interference method and surface modification are combined, the stable super hydrophobic self-cleaning surface is prepared, by means of change of double-light-beam laser interference optical parameters, the parameters of the micro-nano composite structure of the surface of a material subjected to double-light-beam interference are adjusted, the micro-nano composite structure periodicity size and microstructure shape size are controlled, and the super hydrophobic performance and cleaning function adaptation requirements are met better.

Description

technical field [0001] The invention belongs to the technical field of bionic super-hydrophobic self-cleaning surface treatment, and in particular relates to a stable super-hydrophobic self-cleaning surface and a preparation method thereof by a double-beam interference method. Background technique [0002] Aluminum alloys are widely used in life and industry because of their good physical and chemical properties. However, the surface of ordinary aluminum alloys is hydrophilic: for example, when water gathers on its surface, water droplets are not easy to roll off, and at low temperatures, its surface is prone to icing and frosting. Bring a lot of inconvenience. In recent years, bionics has continued to develop. Inspired by the self-cleaning mechanism of lotus leaves, researchers have fabricated stable bionic self-cleaning superhydrophobic surfaces. Through the research on the surface of lotus leaf, it is found that, except that the surface of lotus leaf is covered with a l...

AI Technical Summary

Problems solved by technology

The above-mentioned laser surface structure preparation technology is mature and the process is relatively simple, but they are all based on the single-beam laser direct writing method, which is essentially limited by the optical diffraction limit. Even if an ideal optical lens is used, the minimum focus size is about Therefore, the preparation resolution is also limited, and the structural stability of the micro-nano composite structure cannot be guaranteed, nor can higher precision and higher resolution preparation be achieved.

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