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Transparent outdoor super-hydrophobic self-cleaning coating

A super-hydrophobic, outdoor technology, applied in the direction of anti-fouling/underwater coatings, coatings, paints containing biocides, etc., can solve the problems of substrate erosion, regular cleaning and maintenance, and no self-cleaning function, reaching the contact area Reduced, low surface tension, strong hydrophobic effect

Active Publication Date: 2017-12-26
颜健 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cleaning workload is huge and the cleaning operation is difficult
Dirt deposits, in particular, can corrode the base material and affect service life
At present, most outdoor metal components, highway guardrails, transmission towers, signal facilities along railway lines, and urban outdoor public facilities are painted with ordinary paints. Although they have certain protective functions, they do not have self-cleaning functions and require regular cleaning and maintenance. cause extra workload
There are also some hydrophobic coatings, but many of them are opaque, and the water contact angle is generally only about 100 degrees. The hydrophobic effect is average, and some hydrophobic coatings need high temperature curing, which limits the use environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1, first weigh above-mentioned solid content and be 3.5% with solvent hydrophobic resin 20 grams (wherein solid content is 0.7g), add hexamethyldisilazane to process roughness solid particle 0.7g (that is, this roughness solid The amount of particles added is 1 times the solid content of the hydrophobic resin with solvent), and the transparent outdoor super-hydrophobic self-cleaning coating is prepared after mixing with an ultrasonic disperser.

Embodiment 2

[0021] Example 2, first weigh 20 grams of the above-mentioned solid content of 2% hydrophobic resin with a solvent (wherein the solid content is 0.4 g), add hexamethyldisilazane to process 2.0 g of roughness solid particles (that is, the roughness solid The amount of particles added is 5 times the solid content of the hydrophobic resin with solvent), and the transparent outdoor super-hydrophobic self-cleaning coating is prepared after mixing with an ultrasonic disperser.

Embodiment 3

[0022] Example 3, first weigh 20 grams of the above-mentioned solid content of 3.5% hydrophobic resin with solvent (wherein the solid content is 0.7 g), add hexamethyldisilazane to process 2.0 g of roughness solid particles (that is, the roughness solid The amount of particles added is 3 times the solid content of the hydrophobic resin with solvent), a drop of catalyst organotin (about 0.1 ml) is added, and the transparent outdoor super-hydrophobic self-cleaning coating is prepared after mixing with an ultrasonic disperser.

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PUM

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Abstract

The invention discloses a transparent outdoor super-hydrophobic self-cleaning coating. The transparent outdoor super-hydrophobic self-cleaning coating contains solvent-carrying hydrophobic resin and solid-state particles with roughness processed by hexamethyl disilazane, wherein the adding amount of the solid-state particles is 1-5 times of that of the solvent-carrying hydrophobic resin; and the solvent-carrying hydrophobic resin is obtained by the steps of mixing 2.84wt%-5.68wt% of heptadecafluorodecyl trimethoxysilane, 0.6wt%-1.2wt% of phenyl trimethoxysilane, 0.45wt%-0.9wt% of tetramethyl orthosilicate and the balance of a solvent, and carrying out partial hydrolytic condensation. The transparent outdoor super-hydrophobic self-cleaning coating has strong hydrophobicity and grease resistance, and the contact area between pollutants such as dust with the surface of coating layer is greatly reduced, so that the coating has incomparable excellent self-cleaning property; and water can tumble on the surface of an article without leaving water stains like on a lotus leaf. The coating is suitable for being used on the outer surfaces of base materials such as outdoor metal components, pavement guard bars, steel transmission towers, signal facilities along railways and urban outdoor public facilities.

Description

technical field [0001] The invention relates to the synthesis technology of super-hydrophobic self-cleaning coatings on the surfaces of outdoor metal components, highway guardrails, transmission towers, signal facilities along railway lines, urban outdoor public facilities, etc. Transparent superhydrophobic self-cleaning coating on substrate surfaces. Background technique [0002] Outdoor metal components, highway guardrails, transmission towers, signal facilities along railway lines, and the outer surfaces of urban outdoor public facilities will gradually become dirty due to contact with rainwater, fog, mud, water vapor in the air, dust, and automobile exhaust. The cleaning workload is huge and the cleaning construction operation is difficult. In particular, dirt deposits will erode the substrate and affect the service life. At present, most of the outdoor metal components, highway guardrails, power transmission towers, signal facilities along railway lines, and the exter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/08C09D5/16C09D7/12
CPCC08K3/36C08K9/06C08K2201/011C09D5/1675C09D5/1687C09D183/08
Inventor 任健
Owner 颜健
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