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Transparent super-hydrophobic self-cleaning coating

A self-cleaning, super-hydrophobic technology, applied in 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, weak adhesion to substrates, etc. , to meet the performance requirements of self-cleaning applications, easy construction, and fast curing.

Active Publication Date: 2015-11-25
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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Examples

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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 20-80nm.

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Abstract

The invention relates to a transparent super-hydrophobic self-cleaning coating. Silicon dioxide nanoparticles with active hydrophobic groups are synthesized by virtue of a one-step direct hydrolysis method, a coating is prepared, and then a high-transparency self-cleaning coating is obtained. The self-cleaning coating comprises the following components in percentage by weight: 1%-10% of the silicon dioxide nanoparticles with the active hydrophobic groups, 90%-98% of alcohol solvents and 0.1%-1% of an aid. After the film formation, the light transmittance of the coating is higher than 98%, and the water contact angle is larger than 150 degrees. The coating has good self-cleaning performance and can be widely applied to architectural glass curtain walls, automotive glass, photovoltaic assemblies, optical devices and the like.

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 ...

Claims

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Application Information

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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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