a kind in sio 2 Method for preparing superhydrophobic coating on glass surface

A super-hydrophobic coating, glass surface technology, applied in the coating and other directions, can solve the problems of poor wear resistance, reduced hydrophobicity, easy wear, etc., to achieve the effect of improving hydrophobic performance, improving roughness, and simple process

Active Publication Date: 2021-08-20
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sol-gel method has a mild reaction and can be adjusted at room temperature and pressure, so it is widely used. However, the superhydrophobic silica prepared by the sol-gel method has poor adhesion to the glass substrate and poor wear resistance during application. , it is very easy to wear and tear during use, resulting in a decrease in hydrophobicity, so the application of glass super-hydrophobic surfaces has not been industrialized

Method used

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  • a kind in sio <sub>2</sub> Method for preparing superhydrophobic coating on glass surface
  • a kind in sio <sub>2</sub> Method for preparing superhydrophobic coating on glass surface
  • a kind in sio <sub>2</sub> Method for preparing superhydrophobic coating on glass surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] In this example, a SiO 2 A method for preparing a superhydrophobic coating on a glass surface, comprising the steps of:

[0045] (1) SiO 2 Glass pretreatment: Soak the glass in a mixed solution of 98% concentrated sulfuric acid and 30% hydrogen peroxide for 4 hours, the volume ratio of 98% concentrated sulfuric acid and 30% hydrogen peroxide is 3:1, use Rinse with deionized water, then soak in the mixed solution of water, hydrogen peroxide and ammonia water, boil the mixed solution for 0.8h, the volume ratio of water, hydrogen peroxide and ammonia water is 4:1:1, and then use deionized water Rinse well, blow dry with nitrogen, then soak in 3-aminopropyltriethoxysilane solution for 22h, 3-aminopropyltriethoxysilane solution refers to 3-aminopropyltriethoxysilane, anhydrous Ethanol, deionized water, and acetic acid are prepared according to the volume ratio of 1:48:1:0.25, cleaned with ethanol, and dried with nitrogen gas for later use;

[0046] (2) Soak the pretreated...

Embodiment 2

[0052] In this example, a SiO 2 A method for preparing a superhydrophobic coating on a glass surface, comprising the steps of:

[0053] (1) SiO 2 Glass pretreatment: Soak the glass in a mixed solution of 98% concentrated sulfuric acid and 30% hydrogen peroxide for 5 hours, the volume ratio of 98% concentrated sulfuric acid and 30% hydrogen peroxide is 7:3, use Rinse with deionized water, then soak in a mixed solution of water, hydrogen peroxide and ammonia water, boil the mixed solution for 1 hour, the volume ratio of water, hydrogen peroxide and ammonia water is 5:1:1, and then rinse with deionized water Clean, dry with nitrogen, then soak in 3-aminopropyltriethoxysilane solution for 24h, 3-aminopropyltriethoxysilane solution refers to 3-aminopropyltriethoxysilane, absolute ethanol , deionized water, and acetic acid are prepared according to the volume ratio of 1:48:1:0.25, cleaned with ethanol, and dried with nitrogen for later use;

[0054] (2) Soak the pretreated glass ...

Embodiment 3

[0060] In this example, a SiO 2 A method for preparing a superhydrophobic coating on a glass surface, comprising the steps of:

[0061] (1) SiO 2 Glass pretreatment: Soak the glass in a mixed solution of 98% concentrated sulfuric acid and 30% hydrogen peroxide for 6 hours, the volume ratio of 98% concentrated sulfuric acid and 30% hydrogen peroxide is 2:1, use Rinse with deionized water, then soak in the mixed solution of water, hydrogen peroxide and ammonia water, boil the mixed solution for 1.2h, the volume ratio of water, hydrogen peroxide and ammonia water is 6:1:1, and then use deionized water Rinse well, blow dry with nitrogen, then soak in 3-aminopropyltriethoxysilane solution for 26h, 3-aminopropyltriethoxysilane solution refers to 3-aminopropyltriethoxysilane, anhydrous Ethanol, deionized water, and acetic acid are prepared according to the volume ratio of 1:48:1:0.25, cleaned with ethanol, and dried with nitrogen gas for later use;

[0062] (2) Soak the pretreated...

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Abstract

The present invention relates to a SiO 2 A method for preparing a superhydrophobic coating on a glass surface. The method of the present invention mainly constructs a micro-nano structure on the glass surface through a layer-by-layer self-assembly method, and repeatedly soaks the pretreated glass in polyacrylic acid solution and silver-modified polyetherimide. In the amine solution, a multi-layer film with a stable structure is formed on the surface of the glass, and then a hydrophobic coating is applied on the surface to obtain a super-hydrophobic coating. The process is simple, the cycle is short, the cost is low, and the stability and hydrophobicity of the coating are good. The inventor finds through a large number of tests that the hydrophobicity of the multilayer film is better when it is between 8-14 layers; the hydrophobic coating contains silver and titanium dioxide nanoparticles, which makes the coating have better stability and lasting antibacterial effect , adding a certain amount of titanium dioxide nanoparticles helps to improve the roughness of the coating and improve the hydrophobicity.

Description

technical field [0001] The invention belongs to the technical field of superhydrophobic materials, in particular to a 2 Method for preparing superhydrophobic coating on glass surface. Background technique [0002] The surface of an object with a water contact angle greater than 90° is hydrophobic, while the surface of an object with a water contact angle above 150° is superhydrophobic. The superhydrophobic surface is not only hydrophobic but also oleophobic. The superhydrophobic surface has excellent performance, so it has broad application prospects in many fields, such as self-cleaning, anti-corrosion, anti-icing, drag reduction, and antifouling. However, the durability of artificial superhydrophobic surfaces is not good during actual use, and they are prone to lose superhydrophobic properties due to physical damage such as scratches and abrasions, which greatly limits the application of superhydrophobic materials. [0003] The hydrophobic mechanism of the superhydrophob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/34
CPCC03C17/3405C03C2217/76C03C2218/111C03C2218/32
Inventor 郭思瑶罗惠华陈际洲刘杰牟犇张素磊万小梅
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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