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A transparent superhydrophobic self-cleaning coating

A self-cleaning, super-hydrophobic technology, applied in the direction of anti-fouling/underwater coatings, anti-corrosion coatings, coatings, etc., can solve the problems of unfavorable use of bionic transparent super-hydrophobic coatings, expensive production costs of equipment, discounts on practical value, etc., to achieve Meet the performance requirements of self-cleaning applications, convenient construction, and low shrinkage

Active Publication Date: 2017-09-29
INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The superhydrophobic films currently reported have poor surface transparency, weak binding force with the substrate, and are prone to peeling off, which greatly reduces their practical value.
[0004] At present, the preparation methods of biomimetic transparent superhydrophobic coatings mainly include surface modification with low surface energy substances, sol-gel method, layer-by-layer self-assembly method, deposition method, plasma technology, etc., but the preparation process is complicated, the conditions are harsh, and the equipment Expensive production costs and other issues are not conducive to the practical use of biomimetic transparent superhydrophobic coatings

Method used

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Effect test

Embodiment 1

[0021] Embodiment 1: surface band methacrylate base hydrophobic silicon dioxide nanoparticle (MSiO 2 )1 synthesis

[0022] Take 2mL tetraethyl orthosilicate, 0.12mL silane coupling agent KH570, add 35mL absolute ethanol, stir for 15min, add 3mL hexamethyldisilazane, continue stirring for 0.5h, then slowly add 3mL deionized water dropwise, room temperature Stirring and reacting for 24 hours, an ethanol dispersion liquid of silicon dioxide nanoparticles is formed, and the particle diameter of the nanoparticles is 40-80nm.

Embodiment 2

[0023] Embodiment 2: the surface band epoxy-based hydrophobic silica nanoparticles (ESiO 2 )1 synthesis

[0024] Take 2mL tetraethyl orthosilicate, 0.12mL silane coupling agent KH560, add 35mL absolute ethanol, stir for 15min, then add 3mL hexamethyldisilazane, continue stirring for 0.5h, then slowly add 3mL deionized water, room temperature Stirring and reacting for 24 hours, an ethanol dispersion liquid of silicon dioxide nanoparticles is formed, and the particle diameter of the nanoparticles is 30-70nm.

Embodiment 3

[0025] Embodiment 3: surface band methacrylate base hydrophobic silicon dioxide nanoparticle (MSiO 2 ) Synthesis of 2

[0026] Take 2mL tetraethyl orthosilicate, 0.12mL silane coupling agent KH570, add 35mL absolute ethanol, stir for 15min, add 3mL divinyltetramethyldisilazane, continue stirring for 0.5h, then slowly add 3mL deionized water, stirred and reacted at room temperature for 24 hours to form an ethanol dispersion of silicon dioxide nanoparticles, and the particle size of the nanoparticles is 20-80 nm.

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Abstract

A transparent super-hydrophobic self-cleaning coating, which uses a one-step direct hydrolysis method to synthesize silica nanoparticles with active hydrophobic groups, and then prepares a coating to obtain a highly transparent self-cleaning coating. The self-cleaning paint consists of hydrophobic silicon dioxide nanoparticles with active groups, alcohol solvents and additives. The content of silica nanoparticles with hydrophobic active groups is 1%-10%, the content of alcohol solvents is 90%-98%, and the content of additives is 0.1%-1%. After the film is formed, the light transmittance of the coating is greater than 98%, and the water contact angle is greater than 150°. It has good self-cleaning performance and can be widely used in architectural glass curtain walls, automotive glass, photovoltaic modules, optical devices, etc.

Description

technical field [0001] The invention relates to a transparent super-hydrophobic self-cleaning paint, which belongs to the technical field of functional polymer materials. Background technique [0002] The self-cleaning surface with "lotus leaf effect" has good superhydrophobicity and strong anti-pollution ability. Self-cleaning coating has the advantages of water saving, energy saving, environmental protection, etc., and it has attracted more and more people's attention, and it is one of the hot spots in material science research. At present, biomimetic superhydrophobic coatings are mainly realized by modifying low surface energy substances on rough surfaces and improving the roughness of low surface energy substances. [0003] With the deepening of research, people have gradually found that transparency is one of the most important parameters in the construction of superhydrophobic coatings. The higher light transmittance makes the biomimetic superhydrophobic coating have...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D4/02C09D5/16C09D5/08C09D7/12
Inventor 孙复钱胡银翁雅青王小玉
Owner INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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