Method for preparing transparent super-hydrophobic automatic cleaning coating

A self-cleaning coating and super-hydrophobic technology, applied in antifouling/underwater coatings, biocide-containing paints, etc., can solve the problems of expensive equipment and difficult preparation, and achieve low cost, simple process, and easy-to-obtain raw materials Effect

Inactive Publication Date: 2009-09-02
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a simple and convenient method for preparing large-area transparent superhydrophobic self-cleaning coatings, which can be appl

Method used

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  • Method for preparing transparent super-hydrophobic automatic cleaning coating
  • Method for preparing transparent super-hydrophobic automatic cleaning coating
  • Method for preparing transparent super-hydrophobic automatic cleaning coating

Examples

Experimental program
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Effect test

Embodiment 1

[0031] (1) Treatment of the substrate:

[0032] Surface-level glass slides were ultrasonically treated with toluene, acetone, chloroform, ethanol, and distilled water for 10 min, respectively, to remove various impurities attached to the substrate surface. 2 SO 4 and H at a mass concentration of 30% 2 o 2 (v:v=7:3) in the mixed solution, heated and boiled for 20 minutes until no bubbles overflowed, rinsed with a large amount of distilled water after cooling, and then dried with nitrogen, and set aside.

[0033] (2) Preparation of solution:

[0034] 0.3g of SiO produced by Sigma-Aldrich with a particle size of 10nm 2 Inorganic nanoparticles were dissolved in a mixed solution of 100mL isopropanol and deionized water, the volume ratio of isopropanol to deionized water was 1:4, and the SiO 2 The nanoparticles are uniformly dispersed and ready for use; then 0.2 g of polydimethyldipropylenelamine hydrochloride is dissolved in 100 mL of deionized water, and the solution is unifo...

Embodiment 2

[0043] (1) Treatment of the substrate:

[0044] Surface-level glass slides were ultrasonically treated with toluene, acetone, chloroform, ethanol, and distilled water for 10 min to remove various impurities attached to the surface of the substrate. 2 SO 4 and 30% mass concentration of H 2 o 2 (v:v=7:3) in the mixed solution and boiled (~20min) until no bubbles overflow. After cooling, rinse with a large amount of distilled water, then blow dry with nitrogen, and set aside.

[0045] (2) Solution preparation:

[0046] 0.4g of TiO produced by Sigma-Aldrich with a particle size of 20nm 2 Nanoparticles were dissolved in a mixture of 100mL acetone and deionized water, the volume ratio of acetone and deionized water was 1:2, and the TiO 2The nanoparticles are uniformly dispersed and ready for use; dissolve 0.3g of polyacrylamine in 100mL of water, and dissolve evenly before use.

[0047] (3) Micro-nano composite surface preparation:

[0048] Soak the glass substrate processed...

Embodiment 3

[0054] (1) Treatment of the substrate:

[0055] Surface-level quartz slices were ultrasonically treated with toluene, acetone, chloroform, ethanol, and distilled water for 10 min to remove various impurities attached to the surface of the substrate, and then heated in 98% H 2 SO 4 and 30% mass concentration of H 2 o 2 (v:v=7:3) in the mixed solution and boiled (~20min) until no bubbles overflow. After cooling, rinse with a large amount of distilled water, then blow dry with nitrogen, and set aside.

[0056] (2) Solution preparation:

[0057] 0.4g of SiO produced by Sigma-Aldrich with a particle size of 14nm 2 Nanoparticles were dissolved in a mixture of 100 mL ethanol and deionized water, the volume ratio of ethanol to deionized water was 1; 2, and the SiO 2 The nanoparticles are uniformly dispersed and ready for use; dissolve 0.5g of polyacrylamine in 100mL of water and dissolve evenly before use.

[0058] (3) Micro-nano composite surface preparation:

[0059] Soak th...

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Abstract

The invention belongs to the technical field of preparing transparent super-hydrophobic coatings, in particular to a method for preparing a transparent, super-hydrophobic and automatic-cleaning coating on an arbitrary-shape substrate made of glass, quartz, and the like. The method for preparing a transparent super-hydrophobic automatic cleaning coating comprises the following steps: substrate processing, solution preparation, micro-nanometer composite structure assemblage, heat processing of the coating, modification of a hydrophobic substance, and the like. The method of the invention is not limited by the size and the shape of the substrate and is suitable for the substrates with flat surfaces, curve surfaces and irregular surfaces. The contact angle of the super-hydrophobic coating is larger than 150 DEG, and the rolling angle of the super-hydrophobic coating is smaller than 5 DEG. When falling on the glass, rain drops can rapidly roll off without being adhered to the glass and can take away the dust falling on the glass to keep the surface to be clean. The prepared coating has high transmission, and the average transmission is higher than 90 percent. The invention has simple technology and method, easy-obtained material and low cost, and is suitable for the occasions of windshields and lenses of automobiles and planes, curtain walls and glass of buildings, and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of transparent super-hydrophobic coatings, in particular to a method for preparing transparent, super-hydrophobic and self-cleaning coatings on glass, quartz and other arbitrary-shaped substrates. Background technique [0002] The superhydrophobic phenomenon is very widespread in nature, and many plants, animals, and insects have superhydrophobic surfaces. A superhydrophobic surface generally refers to a surface with a contact angle greater than 150° and a rolling angle less than 10°. The superhydrophobic surface has many unique surface characteristics: such as self-cleaning, anti-fouling, hydrophobicity, etc., making it have great application prospects in many fields of life and production. [0003] The transparent superhydrophobic coating has good visible light permeability and hydrophobicity, and it can be applied on the glass surface to prepare self-cleaning glass. This kind of glass can...

Claims

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Application Information

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IPC IPC(8): C03C17/34C09D5/16
Inventor 李洋孙俊奇
Owner JILIN UNIV
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