A kind of preparation method of titanium dioxide photocatalytic coating and coating thereof

A technology of titanium dioxide and nano-titanium dioxide, which is applied in the direction of chemical instruments and methods, physical/chemical process catalysts, coatings, etc., can solve the problems of poor bonding force on the surface of the substrate and affect the catalytic activity of titanium dioxide, so as to improve the bonding force and provide light Effects of catalytic activity and high binding strength

Active Publication Date: 2020-12-29
河北保定太行集团有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention is based on TiO 2 The sol is mixed with nano-TiO 2 Powder, to a certain extent, increases the content of titanium dioxide, but directly adding titanium dioxide powder, its binding force with the surface of the substrate is poor, and at the same time, it affects the catalytic activity of titanium dioxide to a certain extent

Method used

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  • A kind of preparation method of titanium dioxide photocatalytic coating and coating thereof
  • A kind of preparation method of titanium dioxide photocatalytic coating and coating thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] This embodiment relates to a titanium dioxide coating on the inner wall of a titanium tube. The preparation method includes the following steps:

[0041] (1). The surface treatment of the substrate includes sandblasting, washing with water, and drying in sequence;

[0042] (2). Configure the spraying slurry A: dissolve the zinc-silicon acrylate copolymer in methanol, the mass ratio of the zinc-silicon acrylate copolymer to methanol is 1:10, and prepare the spraying slurry A;

[0043] (3). Configure spraying slurry B: prepare a mixed solvent of methanol and deionized water, add titanium tetrachloride, stir evenly, and form a homogeneous TiO 2 Sol, the mol ratio of described methanol and titanium tetrachloride, deionized water is 1:3:5; The homogeneous TiO that will obtain 2 The sol was diluted to 1.5 times with deionized water to make a dispersion liquid; the aminopropyltriethoxysilane modified nano-titanium dioxide powder with a mass proportion of 0.5% was added to the d...

Embodiment 2

[0051] This embodiment relates to a titanium dioxide coating on the surface of a stainless steel pipe, the preparation method comprising the following steps:

[0052] (1). The surface treatment of the substrate includes sandblasting, washing with water, and drying in sequence;

[0053] (2). Configure the spraying slurry A: dissolve the zinc-silicon acrylate copolymer in ethanol, the mass ratio of the zinc-silicon acrylate copolymer to methanol is 1:12, and prepare the spraying slurry A;

[0054] (3). Configure spraying slurry B: prepare a mixed solvent of methanol and deionized water, add titanium sulfate, stir evenly, and form a homogeneous TiO 2 Sol, the mol ratio of described methanol and titanium sulfate, deionized water is 1:3:5; The homogeneous TiO that will obtain 2 The sol was diluted to 2 times with deionized water to make a dispersion liquid, and the aminopropyltriethoxysilane modified nano-titanium dioxide powder with a mass ratio of 0.5% was added to the dispersio...

Embodiment 3

[0062] This embodiment relates to a titanium dioxide coating on the inner wall of a titanium tube. The preparation method includes the following steps:

[0063] (1). The surface treatment of the substrate includes sandblasting, washing with water, and drying in sequence;

[0064] (2). Configure the spraying slurry A: dissolve the zinc-silicon acrylate copolymer in methanol, the mass ratio of the zinc-silicon acrylate copolymer to methanol is 1:12, and prepare the spraying slurry A;

[0065] (3). Configure spraying slurry B: prepare a mixed solvent of isopropanol and deionized water, add n-butyl titanate, stir evenly, and form a homogeneous TiO 2 Sol; The molar ratio of described Virahol and n-butyl titanate, deionized water is 1:4:6; The homogeneous TiO that will obtain 2 The sol was diluted to 2 times with deionized water to make a dispersion liquid, and the aminopropyltriethoxysilane modified nano-titanium dioxide powder with a mass ratio of 0.5% was added to the dispersion...

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Abstract

The invention discloses a preparation method for a titanium dioxide photocatalytic coating. The preparation method comprises the following steps that (1) the surface of a substrate is treated; (2) a spraying slurry containing titanium dioxide is prepared; (3) the spraying slurry is sprayed and treated by adopting a spray gun, thermal treatment is carried out after spraying, and (4) the substrate is cooled to room temperature after the thermal treatment is completed, and then the substrate containing a coating is washed in pure water, and dried in air to obtain a product. According to the preparation method, the excellent photocatalytic performance of the TiO2 coating is used, and TiO2 nanoparticles are uniformly dispersed in the coating, so that the coating has strong photocatalytic performance, and therefore the antifouling performance of the coating is improved.

Description

technical field [0001] The invention relates to the technical field of photocatalytic coatings, in particular to a method for preparing a titanium dioxide photocatalytic coating and the titanium dioxide photocatalytic coating obtained by the preparation method. Background technique [0002] With the development of industrialization, the pollution of both surface water sources and groundwater sources is becoming more and more serious, and it is showing a trend of changing from simple pollution from a single pollution source to complex pollution from multiple pollution sources, especially new chemical pollution such as environmental endocrine disruptors. The emergence of pollution has made the types of pollution more complex. Although the country continues to increase its efforts to control water pollution, it is difficult to make significant changes in the short term; in addition, with the continuous improvement of living standards, people's requirements for water quality are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D7/24B05D3/02C09D1/00B01J35/00B01J21/06
CPCB01J21/063B01J35/004B05D3/0254B05D7/24B05D2301/00B05D2518/10B05D2518/12C09D1/00
Inventor 齐晓娜庞淑昌靳艳涛张军孙学硕
Owner 河北保定太行集团有限责任公司
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