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Super-hydrophobic coating as well as preparation method and application thereof

A technology of super-hydrophobic coating and composite intermediate layer, which is applied in coating, general water supply saving, sustainable manufacturing/processing, etc. It can solve the problems of poor stability of super-hydrophobic surface and difficult to realize underwater practical application, etc., to achieve improved stability properties, excellent anti-corrosion performance, and the effect of improving the binding force

Active Publication Date: 2022-08-02
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the problems raised by the background technology, the purpose of the present invention is to propose a method for preparing a super-hydrophobic coating, which can prepare a super-hydrophobic coating with high stability, anti-friction and anti-fouling and anti-bioadhesion properties, which solves the existing problems The poor stability of superhydrophobic surface makes it difficult to realize the problem of underwater practical application
[0005] Another object of the present invention is to propose a super-hydrophobic coating prepared by the above-mentioned preparation method, which not only has high stability, but also has excellent anti-friction, anti-fouling and anti-bioadhesion properties, and solves the problem of poor stability of existing super-hydrophobic surfaces. and problems that are difficult to realize underwater practical application

Method used

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  • Super-hydrophobic coating as well as preparation method and application thereof
  • Super-hydrophobic coating as well as preparation method and application thereof
  • Super-hydrophobic coating as well as preparation method and application thereof

Examples

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preparation example Construction

[0038] A preparation method of a superhydrophobic coating, comprising the following steps:

[0039] (1) the substrate is placed on the top of the candle flame, and the candle soot deposition is carried out to form a pre-soot layer;

[0040] (2) after mixing the coupling agent solution and the low surface energy solution, drop into the surface of the soot layer, and carry out semi-curing treatment to obtain a semi-cured composite intermediate layer;

[0041] (3) coating the polymer material solution on the surface of the semi-cured composite intermediate layer;

[0042] (4) place the sample obtained in step (3) above the candle flame, carry out candle soot deposition, and form a polymer soot layer;

[0043] (5) After drying the sample obtained in step (4) at 50-300° C. for 0.5-3 hours, after curing, a super-hydrophobic coating is formed on the surface of the substrate.

[0044] Superhydrophobic surfaces in nature and man-made bionic superhydrophobic surfaces have poor stabili...

Embodiment 1

[0072] A preparation method of a superhydrophobic coating, comprising the following steps:

[0073](1) Prepare low surface energy solution, coupling agent solution and polymer material solution: dissolve polydimethylsiloxane in n-heptane solution, stir to obtain low surface energy solution; mix coupling agent KH-570 In the ethanol solution, hydrolyze with deionized water, use acetic acid to adjust the pH of the mixed solution until the pH is 4, and continue stirring the obtained solution for one hour to obtain a coupling agent solution; take 10 ml of tetrahydrofuran (THF) solution, weighed The amount of 0.1g thermoplastic polyurethane powder was dissolved in the solution, and the solution was continuously stirred to obtain a polymer material solution;

[0074] Cut the substrate (aluminum sheet) for cleaning and set aside, light a candle, and after the candle flame is stable, place the aluminum sheet in the middle flame position 0.5cm above the candle and move it back and forth...

Embodiment 2

[0080] (1) Preparation of low surface energy solution, coupling agent solution and polymer material solution: dissolving heptadecafluorodecyltriethoxysilane solution in ethanol solution, hydrolyzing with deionized water, and stirring for 24 hours to obtain low surface energy solution Surface energy solution; mix the coupling agent KH-560 in ethanol solution, hydrolyze with deionized water, use acetic acid to adjust the pH of the mixed solution until the pH is 4, and continue stirring the obtained solution for one hour to obtain the coupling 5 ml of tetrahydrofuran (THF) solution and 5 ml of N,N-dimethylformamide (DMF) solution were mixed uniformly, 5 g of polyester powder was weighed and dissolved in the mixed solution, and the solution was continuously stirred to obtain a polymer material solution;

[0081] Clean the substrate (glass) for later use, light a candle, and after the candle flame is stable, place the glass in the middle flame position 2cm above the candle and move ...

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Abstract

The invention discloses a super-hydrophobic coating as well as a preparation method and application thereof, and relates to the technical field of material surfaces. The preparation method of the super-hydrophobic coating comprises the following steps: placing the substrate above a candle flame, and carrying out candle ash deposition to form a pre-ash layer; mixing a coupling agent solution with a low surface energy solution, dropwise adding the mixture to the surface of the pre-soot layer, and performing semi-curing treatment to obtain a semi-cured composite intermediate layer; coating the surface of the semi-cured composite middle layer with a high polymer material solution; placing the prepared sample above a candle flame, and carrying out candle ash deposition to form a macromolecular ash layer; and drying the sample under the condition of 50-300 DEG C for 0.5-3 hours to form the super-hydrophobic coating on the surface of the substrate. According to the preparation method, the super-hydrophobic coating with high stability, friction resistance and good antifouling and biological adhesion resistance can be prepared, and the problems that an existing super-hydrophobic surface is poor in stability and underwater practical application is difficult to achieve are solved.

Description

technical field [0001] The invention relates to the technical field of material surfaces, in particular to a superhydrophobic coating and a preparation method and application thereof. Background technique [0002] Anti-fouling and anti-biological adhesion is one of the most important properties of the material surface. On the surface of materials such as ship hulls, medical equipment, mechanical parts, oil pipelines, kitchen utensils, etc., if there is dust, oil pollution and biological fouling adhesion, it will cause great damage to the material. influences. For industrial systems operating underwater and oil well drilling rig facilities, ships, bridge piers, etc. that have been immersed in the sea for a long time, due to immersion in water all the year round, organisms in the water will adhere to their surfaces, and biofilms, microbial algae in the sea, etc. will form over time. Microorganisms will adhere to the outer surface of underwater equipment and multiply on the ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/24B05D1/36B05D7/00B05D5/00B05D3/02
CPCB05D7/24B05D1/36B05D7/58B05D5/00B05D3/0254B05D2504/00B05D2508/00Y02P20/10
Inventor 武兴华肖明豪谭国煌孟伟林沐熹梁鹏邓权威
Owner GUANGDONG UNIV OF TECH
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