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Cheap modified paint self-cleaning coating with super-hydrophobicity and preparation method and application thereof

A self-cleaning coating and super-hydrophobic technology, applied in the field of paint and coating, can solve the problems of high cost and complicated preparation process, and achieve the effect of low cost, good repeatability and improved hydrophobicity

Inactive Publication Date: 2013-01-30
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems encountered in the large-scale application of superhydrophobic coatings, such as the disadvantages of complicated preparation process and high cost

Method used

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  • Cheap modified paint self-cleaning coating with super-hydrophobicity and preparation method and application thereof
  • Cheap modified paint self-cleaning coating with super-hydrophobicity and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of ZnO micro-nano composite structure particles: take a solution of zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O) and 0.5mol / L hexamethylenetetramine solution (C 6 h 12 N 4 , HMT) each 200ml ultrasonic, ultrasonic power 80W, ultrasonic time 30min, mix, stir for a period of time; then put the mixed solution in a water bath at 90 ℃ for 2 hours and take it out; after cooling to room temperature, pour off the supernatant , take out the white ZnO particles generated at the bottom, and then ultrasonically disperse them with ethanol, the ultrasonic power is 80W, the ultrasonic time is 10min; centrifuge at 8000rpm for 5min, pour off the supernatant, after ultrasonic cleaning, dry in a drying oven to obtain a white solid powder That is, ZnO micro-nano composite structure particles (the ZnO micro-nano composite structure particles are dandelion-shaped ZnO particles, and their external dimensions are about 5 microns, with nano-branch structures inside);

[00...

Embodiment 2

[0041] (1) Preparation of ZnO micro-nano composite structure particles:

[0042] Take 100ml concentration of 0.1mol / L zinc nitrate hexahydrate solution (Zn(NO 3 ) 2 ·6H 2 O) and 200ml concentration of 0.1mol / L hexamethylenetetramine solution (C 6 h 12 N 4 , HMT) for mixed ultrasound (if a large number of preparations are made, the above ratio will not change), the ultrasonic power is 40W, the ultrasonic time is 50min, mixed and stirred for a period of time; then the mixed solution is placed in a water bath at 95°C for 1 hour and taken out; Pour off the supernatant after cooling at room temperature, take out the white ZnO particles formed at the bottom, and then disperse them by ultrasonication with ethanol. Dried in a drying oven to obtain a white solid powder that is ZnO micro-nano composite structure particles;

[0043] (2) Preparation of modified paint solution:

[0044] Disperse 2 g of dandelion-shaped ZnO micro-nano composite structure particles prepared in Example...

Embodiment 3

[0049] (1) Preparation of ZnO micro-nano composite structure particles:

[0050] Take a concentration of 0.1mol / L zinc nitrate hexahydrate solution (Zn(NO 3 ) 2 ·6H 2 O) and 0.1mol / L hexamethylenetetramine solution (C 6 h 12 N 4 , HMT) each 300ml for ultrasonication (if a large number of preparations, the above ratio remains unchanged), the ultrasonic power is 40W, the ultrasonic time is 60min, mixed and stirred for a period of time; then the mixed solution is placed in a water bath at 50°C for 3 hours and taken out Pour off the supernatant after cooling at room temperature, take out the white ZnO particles generated at the bottom, and then ultrasonically disperse them with ethanol, the ultrasonic power is 50W, and the ultrasonic time is 60min; centrifuge at 6000rpm for 5min, pour off the supernatant, and after ultrasonic cleaning, Place it in a drying oven to dry, and obtain a white solid powder that is a ZnO micro-nano composite structure particle (the ZnO micro-nano co...

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Abstract

The invention provides a cheap modified paint self-cleaning coating with super-hydrophobicity and a preparation method thereof, wherein the prepared cheap modified paint self-cleaning coating with the super-hydrophobicity has a nanometer rough surface structure with a coralline or coralline-like surface; the coating is 50-1000 nm in thickness; and a contact angle of water drop on the surface of the coating is 130-150 degrees. The method provided by the invention has the characteristics of simple technology, good repeatability, low cost and unnecessity of high-cost hydrophobic agent for reducing surface free energy. The modified coating, prepared according to the preparation method provided by the invention, can be used for forming films on various base surfaces consisting of construction outer surface, engineering material surface, mining machinery surface and the like, so that the hydrophobicity can be improved, therefore the outdoor service life is prolonged.

Description

technical field [0001] The invention relates to the field of paints and coatings, in particular to a cheap modified paint self-cleaning coating with superhydrophobicity and its preparation method and application. [0002] The method of adding inorganic particles increases the roughness of the paint coating, thereby increasing the hydrophobicity of the paint coating, which can increase the waterproof and self-cleaning properties of the coating, and thus prolong the life of the coating. Background technique [0003] Due to the non-wetting properties of water droplets on the super-hydrophobic surface, the water droplets can maintain a spherical shape on the surface and roll off very easily, cleaning out dust and other pollutants during the rolling process. Due to its self-cleaning properties, it has potential application value in the fields of anti-corrosion coatings and drag-reducing surfaces, so it has received extensive attention from researchers in industry and scientific r...

Claims

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Application Information

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IPC IPC(8): C09D7/12
Inventor 许小亮杨周顿志凌胡隆谦王会杰
Owner UNIV OF SCI & TECH OF CHINA
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