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An aluminum alloy coupled bionic self-cleaning surface and its preparation method

An aluminum alloy, self-cleaning technology, applied in metal processing equipment, manufacturing tools, welding equipment, etc., can solve problems such as complicated preparation methods, inconvenient operation, and environmental pollution, and achieve good hydrophobicity, improved controllability, and low viscosity The effect that goes along with the self-cleaning effect

Active Publication Date: 2017-11-17
CHANGCHUN UNIV OF SCI & TECH
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

They found that there are many animals and plants in nature with super-hydrophobic properties, and the surfaces of animals and plants with super-hydrophobic properties have certain properties such as anti-corrosion, friction reduction, waterproof, self-cleaning, etc. Some plants in nature with surface self-cleaning properties such as Due to the special structure of the reed surface, researchers have bionically produced materials with certain functions based on the microscopic appearance of the reed surface, but the preparation method is complicated, the operation is inconvenient, and some environmental pollution will be generated during chemical modification.

Method used

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  • An aluminum alloy coupled bionic self-cleaning surface and its preparation method
  • An aluminum alloy coupled bionic self-cleaning surface and its preparation method
  • An aluminum alloy coupled bionic self-cleaning surface and its preparation method

Examples

Experimental program
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Effect test

preparation example Construction

[0025] like figure 2 Shown, a kind of its preparation method of aluminum alloy coupling biomimetic self-cleaning surface, this method comprises the following steps:

[0026] Step 1: Cut the substrate wire into the required size, and polish the surface of the substrate with 600 mesh, 800 mesh and 1500 mesh sandpaper to make the surface relatively smooth.

[0027] Step 2: Brush-plating the pre-grinded substrate: the plating solution used for brush-plating is ultra-fast nickel, and the main component is: NiSO 4 .6H 2 O (265g / L), triammonium citrate (55g / L), ammonia water (105g / L) and ammonium acetate (23g / L); the pH of the plating solution is about 7.5; the brush plating voltage is 8V DC, and the plating pen and The relative speed of the substrate is controlled at 8-12m / min, the brush-plating temperature is controlled at 15°C-35°C, and the surface brush-plating time is selected as 10min.

[0028] Step 3: The brush-plated substrate is ultrasonically cleaned in acetone to preve...

Embodiment 2

[0033] Step 1 and Step 4 to Step 6, the above steps are completely the same as the corresponding steps in Example 1, the difference is that in Step 2, the brush plating voltage is 10V DC.

Embodiment 3

[0035] Step 1 and Step 4 to Step 6, the above steps are completely the same as the corresponding steps in Embodiment 1, the difference is that in Step 2, the brush plating voltage is 12V DC.

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Abstract

An aluminum alloy coupled bionic self-cleaning surface and its preparation method belong to the field of self-cleaning surface preparation. The structure is as follows from bottom to top: aluminum alloy substrate, brush coating and groove; the thickness of the brush coating is greater than 35 μm; the groove is in Fabricated on a brush-coated layer with a pitch of 100‑105 μm, a shape of 20‑25 μm in depth, and a surface contact angle of 120°‑150°. The method includes: pre-grinding the surface of the substrate and cleaning the surface; brushing the substrate; ultrasonic cleaning and deionized water cleaning in acetone; drying the surface of the substrate, heating to 200 ° C, and keeping it warm for two hours Afterwards, cool down to room temperature; laser micro-process the surface of the substrate to construct grooves with micron-scale spacing, and then clean it in ultrasonic waves of deionized water; heat-treat the surface of the substrate to 150°C for two hours and then cool to room temperature for treatment. The hydrophobicity, low surface adhesion and self-cleaning properties of the invention can be widely applied to the surfaces of various parts in the fields of automobile manufacturing, ships, chemical industry and aerospace.

Description

technical field [0001] The invention belongs to the field of self-cleaning surface preparation, and in particular relates to an aluminum alloy coupling bionic self-cleaning surface and a preparation method thereof. Background technique [0002] China is a big manufacturing country. China's aluminum alloy profile industry has passed the primary development stage characterized by quantity growth, and initially entered a new stage of improving product quality, enriching product categories, and relying on comprehensive capabilities to participate in market competition. However, aluminum alloys have poor ability to cope with rain and other humid environments during use, and there is no guarantee for the cleanliness of the surface, which greatly affects its service life and appearance quality. [0003] In order to solve this series of problems, researchers turn their attention to the natural world. They found that there are many animals and plants in nature with super-hydrophobic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D5/06C25D3/12C25D5/48B23K26/352
CPCB23K26/352C25D3/12C25D5/06C25D5/48
Inventor 李晶于化东杜锋弯艳玲赵言辉范凤玉姜虹宇
Owner CHANGCHUN UNIV OF SCI & TECH
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