Stable super hydrophobic self-cleaning surface and double-light-beam interference-method preparation method thereof
A double-beam interference and super-hydrophobic technology, which is applied in laser welding equipment, manufacturing tools, welding equipment, etc., can solve the problems of preparation resolution limitation, inability to guarantee the stability of micro-nano composite structure, and inability to achieve higher precision.
Inactive Publication Date: 2020-10-23
XIANGTAN UNIV
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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 op
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[0041] Example
[0042] 1. Grind the aluminum alloy sheet with a size of 20*20*2mm with metallographic sandpaper for polishing pretreatment; use a metallographic sample polisher to polish the surface of the polished workpiece to obtain surface-polished aluminum Alloy samples; surface roughness Rz is less than 1.0μm;
[0043] 2. Polish the aluminum alloy sample, use deionized water as the solvent for ultrasonic cleaning, the temperature of ultrasonic cleaning is 25-40℃, the ultrasonic power is 160W, and the cleaning time is 10-13min. Dry it with cold air to obtain a clean aluminum alloy sample;
[0044] 3. Fix the clean aluminum alloy after surface cleaning on the preparation platform of dual-beam laser interferometry. The dual-beam interference scanning method is that the two beams are coherently superimposed on the sample surface. The specimen is rotated by 90° and scanned again, and the surface of the specimen is ablated by the superposition of the two scans to prepare a micro-na...
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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...
Claims
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Login to view more IPC IPC(8): B23K26/352B23K26/60B23K26/70B23K103/10
CPCB23K26/355B23K26/60B23K26/702B23K2103/10
Inventor 刘思思武云文张锦洪李峰刘金刚姜胜强廖君慧
Owner XIANGTAN UNIV
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