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Self-cleaning coating with transmittance-increasing and wear-resisting functions and preparation method of self-cleaning coating

A self-cleaning and coating technology, applied in antifouling/underwater coatings, coatings, paints containing biocide, etc., can solve the problems of poor wear resistance and hydrophilicity

Active Publication Date: 2016-06-29
JINLIN HAICHUAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a self-cleaning coating with antireflection and abrasion resistance and a preparation method thereof in order to solve the problems of poor wear resistance and hydrophilicity of the existing self-cleaning coatings

Method used

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  • Self-cleaning coating with transmittance-increasing and wear-resisting functions and preparation method of self-cleaning coating
  • Self-cleaning coating with transmittance-increasing and wear-resisting functions and preparation method of self-cleaning coating
  • Self-cleaning coating with transmittance-increasing and wear-resisting functions and preparation method of self-cleaning coating

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preparation example Construction

[0023] The present invention at first provides a kind of preparation method with antireflection and wear-resistant self-cleaning coating, and this method comprises:

[0024] Step 1: In a reaction vessel containing absolute ethanol, add ammonia water and ethyl orthosilicate, and stir mechanically at 60°C for 8-12 hours to obtain solid SiO 2 Nanoparticles; the volume ratio of the ammonia water and tetraethyl orthosilicate is preferably 5:3; the solid SiO 2 The particle size of the nanoparticles is preferably 25nm;

[0025] Step two: the solid SiO obtained in step one 2 Nanoparticles, cetyltrimethylammonium bromide and diethylamine are mixed, stirred in a 60°C water bath for 1-2 hours, and then ethyl orthosilicate is added to continue the reaction for 3 hours to obtain a reaction solution; the hexadecane The mass percentage of trimethylammonium bromide is preferably 25wt%, and described hexadecyltrimethylammonium bromide (ml): tetraethylorthosilicate (ml): diethylamine (g) is p...

Embodiment 1

[0030] In a three-neck flask containing 100 mL of absolute ethanol, add 5 mL of ammonia water, add dropwise 3 mL of tetraethyl orthosilicate under stirring at 60 ° C, and mechanically stir for 8 hours to obtain solid SiO with a particle size of 25 nm. 2 Nanoparticles: Add 8mL of cetyltrimethylammonium bromide (25wt%) and 0.2g of diethylamine to the above system, stir in a water bath at 60°C for 2h, then add 5mL of tetraethyl orthosilicate to continue Stirring reaction 3h, in above-mentioned system, add the hydrogen peroxide (H2O2) of 8mL 2 o 2 30%), mechanically stirred for 6 hours, centrifuged to obtain a solid precipitate, and washed with deionized water and ethanol for 3 to 5 times to obtain porous SiO with a particle size of 20 to 100 nm. 2 Self-cleaning paint.

[0031] figure 1 For the prepared SiO of embodiment 1 2 TEM images of the nanoparticles, from figure 1 It can be seen that the preparation method of the present invention can obtain porous SiO with different p...

Embodiment 2

[0039] In a three-neck flask containing 100 mL of absolute ethanol, add 10 mL of ammonia water, add 6 mL of tetraethyl orthosilicate dropwise under stirring at 60 ° C, and mechanically stir for 10 h to obtain solid SiO with a particle size of 25 nm. 2 Nanoparticles: Add 10mL of cetyltrimethylammonium bromide (25wt%) and 0.3g of diethylamine to the above system, stir in a water bath at 60°C for 2h, then add 7mL of tetraethyl orthosilicate to continue Stirring reaction 3h, in above-mentioned system, add the hydrogen peroxide (H2O2) of 10mL 2 o 2 30%), mechanically stirred for 8 hours, centrifuged to obtain a solid precipitate, washed with deionized water and ethanol for 3 to 5 times, and obtained a porous SiO with a particle size of 20 to 100 nm. 2 Self-cleaning paint.

[0040] figure 2 For the prepared SiO of embodiment 2 2 TEM images of the nanoparticles, from figure 2 It can be seen that the preparation method of the present invention can obtain porous SiO with differe...

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Abstract

The invention provides a self-cleaning coating with transmittance-increasing and wear-resisting functions and a preparation method of the self-cleaning coating, belongs to the technical field of building coatings and solves the problems of poor wear resistance and hydrophilicity of a conventional self-cleaning coating. According to the method, ammonia water and tetraethoxysilane are added to a reaction container containing absolute ethyl alcohol and stirred at the temperature of 60 DEG C for 8-12 h, and solid SiO2 nanoparticles are obtained; then, the solid SiO2 nanoparticles, hexadecyl trimethyl ammonium bromide and diethylamine are mixed and stirred in a water bath at the temperature of 60 DEG C for 1-2 h, tetraethoxysilane is added, the mixture reacts for 3 h, and a reaction solution is obtained; finally, hydrogen peroxide is added to the reaction solution and stirred, the obtained product is centrifuged and washed, and the self-cleaning coating with the transmittance-increasing and wear-resisting functions is obtained. The invention further provides the self-cleaning coating with transmittance-increasing and wear-resisting functions, which is prepared with the preparation method. The coating has high light transmittance, good mechanical wear resistance and excellent wettability.

Description

technical field [0001] The invention relates to the technical field of architectural coatings, in particular to a self-cleaning coating with antireflection and abrasion resistance and a preparation method thereof. Background technique [0002] Films with anti-reflection and self-cleaning functions are widely used in daily production and military fields, especially in solar cells, high-rise buildings, and glass optical displays. In daily life, people urgently need to develop self-cleaning films with high antireflection and antireflection. However, superhydrophilic films require a certain surface roughness, which is an unfavorable factor for the light-transmitting properties of the films. Increasing the roughness of the surface can improve the wetting properties of the film, but increasing the roughness will cause light scattering and reduce the light transmission. Therefore, it is necessary to control the roughness to achieve versatility. Therefore, it is still a challenge...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/16C01B33/12
CPCC01B33/12C09D1/00C09D5/16
Inventor 欧阳红波孙东峰吴良专
Owner JINLIN HAICHUAN TECH CO LTD
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