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Preparation method of aluminum alloy bionic super-hydrophobic surface

A technology of super-hydrophobic surface and aluminum alloy surface, which is applied to the device for coating liquid on the surface, special surface, coating, etc., which can solve the problems of complex preparation process and achieve good stability

Inactive Publication Date: 2018-04-20
JILIN TEACHERS INST OF ENG & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for preparing an aluminum alloy biomimetic superhydrophobic surface, which is used to solve the problems that special equipment is required and the preparation process is complicated in the preparation of rough surfaces in the current superhydrophobic surface preparation process

Method used

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  • Preparation method of aluminum alloy bionic super-hydrophobic surface
  • Preparation method of aluminum alloy bionic super-hydrophobic surface
  • Preparation method of aluminum alloy bionic super-hydrophobic surface

Examples

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Embodiment 1

[0037] A method for preparing an aluminum alloy biomimetic superhydrophobic surface, comprising the steps of:

[0038] 1) Aluminum alloy surface pre-coated with fluorine-containing polyurethane:

[0039] Pre-coating of aluminum alloy surface with fluorine-containing polyurethane treatment: first, immerse the aluminum alloy plate after degreasing and alkali washing with a special anti-rust oil cleaning agent into an aqueous solution of arodin with a mass fraction of 2% at 15°C for 2 minutes; Then, take out the aluminum alloy plate, heat the aluminum alloy plate to 30°C, and use a spray gun with a working pressure of 0.3MPa to spray the two-component fluorine-containing polyurethane solution on the surface of the aluminum alloy plate multiple times, with a coating thickness of 7 μm to 10 μm; finally , drying the sprayed aluminum alloy plate at 80°C to obtain a pre-coated aluminum alloy plate treated with fluorine-containing polyurethane; wherein, the two-component fluorine-conta...

Embodiment 2

[0042] A method for preparing an aluminum alloy biomimetic superhydrophobic surface, comprising the steps of:

[0043] 1) Aluminum alloy surface pre-coated with fluorine-containing polyurethane:

[0044] Pre-coating of aluminum alloy surface with fluorine-containing polyurethane treatment: first, immerse the aluminum alloy plate after degreasing and alkali washing with a special anti-rust oil cleaning agent into an aqueous solution of arodin with a mass fraction of 2.25% at 20°C for 3 minutes; Then, take out the aluminum alloy plate, heat the aluminum alloy plate to 35°C, use a spray gun with a working pressure of 0.35MPa to spray the fluorine-containing polyurethane solution on the surface of the aluminum alloy plate for several times, and the coating thickness is 7 μm to 10 μm; finally, spray the The final aluminum alloy plate is dried at 90°C to obtain a pre-coated aluminum alloy plate treated with fluorine-containing polyurethane;

[0045] 2) Formation of superhydrophobic...

Embodiment 3

[0047] A method for preparing an aluminum alloy biomimetic superhydrophobic surface, comprising the steps of:

[0048] 1) Aluminum alloy surface pre-coated with fluorine-containing polyurethane:

[0049] Pre-coating of aluminum alloy surface with fluorine-containing polyurethane treatment: first, immerse the aluminum alloy plate after degreasing and alkali washing with a special anti-rust oil cleaning agent into a 5% arodin aqueous solution at 25°C for 4 minutes; Then, take out the aluminum alloy plate, heat the aluminum alloy plate to 40°C, use a spray gun with a working pressure of 0.4MPa to spray the fluorine-containing polyurethane solution on the surface of the aluminum alloy plate for several times, and the coating thickness is 7 μm to 10 μm; finally, spray the The final aluminum alloy plate is dried at 100°C to obtain a pre-coated aluminum alloy plate treated with fluorine-containing polyurethane;

[0050] 2) Formation of superhydrophobic surface of aluminum alloy: the...

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Abstract

The invention discloses a preparation method of the aluminum alloy bionic super-hydrophobic surface. The preparation method comprises the following steps that (1) the aluminum alloy surface is pre-coated with fluorine-containing polyurethane; and (2) the aluminum alloy super-hydrophobic surface is formed. An aluminum alloy plate pre-coated with the fluorine-containing polyurethane is immersed intoa prepared nanometer SiO2 solution to react for 12h-16 h, then the aluminum alloy plate is taken out and then dried at the temperature of 80-100 DEG C, and the aluminum alloy bionic super-hydrophobicsurface is obtained. The aluminum alloy surface is successfully made to have the super-hydrophobic property through the surface modification method, a plurality of concave-pit-shaped structures are evenly formed on the modified aluminum alloy surface, contact angles of the concave-pit-shaped structures and water reach 156 degrees, thus the good super-hydrophobic characteristic is showed, and theprepared super-hydrophobic aluminum alloy surface has good stability.

Description

technical field [0001] The invention relates to the technical field of surface preparation, in particular to a method for preparing an aluminum alloy bionic superhydrophobic surface. Background technique [0002] Metals and their alloys are important engineering materials. Among them, aluminum alloys are widely used due to their excellent properties such as high strength and low density. However, the surfaces of most metals and their alloy substrates have hydrophilic characteristics. Since the surface of a metal substrate with hydrophobic or superhydrophobic properties has the functions of self-cleaning, anti-corrosion, and viscosity reduction and drag reduction, the metal-based biomimetic coupling is prepared by using the super-hydrophobic biological surface as a template and applying micro-nano manufacturing technology. The surface, making it change from hydrophilic to hydrophobic or even superhydrophobic, is of great significance in the fields of science and engineering...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/08B05D7/00
CPCB05D5/083B05D7/546B05D2202/25B05D2503/00B05D2506/10B05D2518/12B05D2601/22B05D2420/01B05D2420/02
Inventor 杨晓东孙艳红杨卓娟尚广瑞
Owner JILIN TEACHERS INST OF ENG & TECH