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A kind of preparation method of superhydrophobic wire mesh

A metal wire mesh, super-hydrophobic technology, applied in the field of preparation of super-hydrophobic wire mesh, can solve the problems of destroying the super-hydrophobic surface structure, super-hydrophobic surface damage, etc., achieving simple process, good self-cleaning and anti-corrosion, raw materials easy-to-get effect

Active Publication Date: 2017-01-04
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the natural environment, the superhydrophobic surface is easily damaged: on the one hand, it is due to the dust pollution in the atmosphere or the ultraviolet rays in the sun destroy the low surface energy substances on the superhydrophobic surface, and on the other hand, it is due to mechanical damage. The structure of the superhydrophobic surface

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Soak the steel mesh in n-hexane for 5 minutes and ultrasonically clean it, take it out, dry it with nitrogen, place it in acetone and clean it ultrasonically for 5 minutes, take it out and dry it with nitrogen. First prepare an ethanol solution of 1,1,2,2-tetrahydro-fluorohexadecylsiloxane with a concentration of 0.3 g / ml; then prepare a distilled aqueous solution of potassium hydroxide with a mass concentration of 0.6%; Aqueous potassium solution was added dropwise to the ethanol solution of 1,1,2,2-tetrahydro-fluorohexadecylsiloxane and magnetically stirred for 36 hours. After the reaction, the product fluorinated polyhedral oligomeric silsesquioxane was precipitated as a white solid. The fluorinated polyhedral oligomeric silsesquioxane solid was taken out, washed with distilled water, filtered and dried. The dried solid powder was dissolved in difluorodichloromethane to prepare a fluorinated polyhedral oligomeric silsesquioxane difluorodichloromethane solution with ...

Embodiment 2

[0024] Soak the copper wire mesh in n-hexane and ultrasonically clean it for 5 minutes, take it out, dry it with nitrogen, place it in acetone and clean it ultrasonically for 5 minutes, take it out and dry it with nitrogen. First prepare an ethanol solution of 1,1,2,2-tetrahydro-fluorodecylsiloxane with a concentration of 0.4 g / ml; then prepare a distilled aqueous solution of potassium hydroxide with a mass concentration of 0.7%; then add potassium hydroxide The aqueous solution was added dropwise to the ethanol solution of 1,1,2,2-tetrahydro-fluorodecylsiloxane and magnetically stirred for 24 hours. After the reaction, the product fluorinated polyhedral oligomeric silsesquioxane was precipitated as a white solid. The fluorinated polyhedral oligomeric silsesquioxane solid is taken out, washed with distilled water, filtered, dried, and then dissolved in difluorodichloromethane to form a fluorinated polyhedral oligomeric silsesquioxane with a concentration of 0.01mol / L Difluoro...

Embodiment 3

[0026] Soak the tungsten screen in n-hexane for 5 minutes and ultrasonically clean it, take it out, dry it with nitrogen, place it in acetone and clean it ultrasonically for 5 minutes, take it out and dry it with nitrogen. First prepare an ethanol solution of 1,1,2,2-tetrahydro-fluorooctylsiloxane with a concentration of 0.5 g / ml; then prepare a distilled aqueous solution of potassium hydroxide with a mass concentration of 0.8%; then add potassium hydroxide The aqueous solution was added dropwise to the ethanol solution of 1,1,2,2-tetrahydro-fluorooctylsiloxane and magnetically stirred for 24 hours. After the reaction, the product fluorinated polyhedral oligomeric silsesquioxane was precipitated as a white solid. The fluorinated polyhedral oligomeric silsesquioxane solid is taken out, washed with distilled water, filtered, dried, and then dissolved in difluorodichloromethane to form a fluorinated polyhedral oligomeric silsesquioxane with a concentration of 0.5mol / L Difluorodi...

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Abstract

The invention discloses a preparation method of a superhydrophobic wire mesh, which comprises the following process steps: <1> immersing the metal mesh in n-hexane for ultrasonic cleaning, drying with nitrogen, putting in acetone for ultrasonic cleaning, and drying with nitrogen; <2 > Prepare fluorinated alkyl siloxane ethanol solution and potassium hydroxide aqueous solution; add potassium hydroxide aqueous solution dropwise to the above ethanol solution, and magnetically stir; take out and clean the precipitated fluorinated polyhedral oligomeric silsesquioxane solid, Filter, dry, and then dissolve in difluorodichloromethane; <3> evenly coat the fluorinated polyhedral oligomeric silsesquioxane difluorodichloromethane solution on the surface of the wire mesh, and blow dry with nitrogen; <4> Dry the wire mesh and let cool. The contact angle of the superhydrophobic coating prepared by the method of the invention is greater than 150°, the rolling angle is less than 5°, has good self-cleaning and anti-corrosion properties, and prolongs the service life of the wire mesh.

Description

technical field [0001] The invention relates to metal surface modification technology, in particular to a preparation method of super-hydrophobic wire mesh. Background technique [0002] Superhydrophobicity is a common phenomenon in nature. Many organisms have superhydrophobic surfaces, such as lotus leaves, rice leaves, taro leaves and dung beetle shells. A superhydrophobic surface is generally defined as a surface with a water contact angle greater than 150° and a rolling angle less than 10°. Scientific studies have shown that the superhydrophobic properties are determined by the two factors of rough surface structure and low surface energy. Superhydrophobic surfaces have many unique surface properties: such as self-cleaning, anti-fouling, anti-fog and anti-icing properties, these advantages make them have great potential application prospects in various fields of human life. [0003] However, in the natural environment, the superhydrophobic surface is easily damaged: on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/02
Inventor 卢朝霞刘瑶刘宇恒黄伊琳
Owner GUANGXI UNIV
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