Photocatalyst coating and preparation method thereof

A photocatalyst and coating technology, applied in the direction of coating, can solve the problems of poor water resistance and adhesion, hindering wide application, etc., and achieve the effect of good water resistance and adhesion, low price, and prevention of air pollution.

Inactive Publication Date: 2016-04-06
LUOYANG LVREN ENVIRONMENTAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water-based inorganic coatings have the advantages of high hardness and good wear resistance, but the biggest disadvantages of water-based inorganic coatings are poor water resistance and adhesion, which hinder its wide application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1 of the present invention provides a kind of photocatalyst coating, and it is made up of the raw material of following mass fraction: Particle diameter is 30~50nm nano titanium dioxide 2g, 50% sodium water glass solution 35g, white carbon black 20g, 25% ethanol Aqueous acid solution 5g, silicone acrylic emulsion 2g and water 36g.

[0014] The above-mentioned photocatalyst coating that embodiment 1 provides is prepared by the following steps: the 5g glycolic acid aqueous solution that mass concentration is 25% is added dropwise in the 35g described sodium water glass solution that mass fraction is 50%, forms the first mixed liquor; Add 2g of nano-titanium dioxide and 20g of white carbon black whose crystal form is anatase-type primary particle size to 30-50nm into the first mixed solution, and stir to form a second mixed solution after being uniformly dispersed; The two mixtures were added to 2g of silicone acrylic emulsion, and finally 36g of water was added...

Embodiment 2

[0017] Embodiment 2 of the present invention provides a kind of photocatalyst coating, and it is made up of the raw material of following mass fraction: Particle diameter is 50~70nm nano titanium dioxide 3g, 60% sodium water glass solution 30g, white carbon black 24g, 20% ethanol Aqueous acid solution 9g, silicone acrylic emulsion 3.5g and water 30.5g. The preparation method of the photocatalyst coating is basically the same as the preparation method provided in the first embodiment, except that the ratio of each raw material is different.

[0018] The coating provided in Example 2 was coated on a glass plate for curing and curing. The bond strength test was carried out under the standard state according to the state of JG / T3049-1998, and the water resistance test of the paint film was carried out under the state of GB / T1733-93. The bonding force of the paint reached 1.7MPa, and the water resistance reached 35 days. Using an 18W ultraviolet lamp with a main wavelength band of...

Embodiment 3

[0020] Embodiment 3 of the present invention provides a kind of photocatalyst coating, and it is made up of the raw material of following mass fraction: Particle diameter is 50~70nm nano titanium dioxide 4g, 65% sodium water glass solution 28g, white carbon black 25g, 20% ethanol Aqueous acid solution 10.5g, silicon acrylic emulsion 4g and water 28.5g. The preparation method of the photocatalyst coating provided in this embodiment is basically the same as the preparation method provided in the first embodiment, basically the same, except that the ratio of each raw material is different.

[0021] The above-mentioned coating provided in Example 3 was coated on a glass plate for curing and curing. The bond strength test is carried out under the standard state according to the state of JG / T3049-1998, and the water resistance test of the paint film is carried out under the state of GB / T1733-93. The bonding force of the paint reaches 2.8MPa, and the water resistance reaches 40 days....

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Abstract

The invention provides a photocatalyst coating. The photocatalyst coating is characterized by comprising raw materials in percentage by mass as follows: 2%-6% of nano-titanium dioxide, 20%-35% of a sodium silicate solution, 20%-30% of white carbon black, 5%-16% of glycollic acid, 2%-5% of a silicone acrylic emulsion and the balance of water, wherein the mass fraction of the sodium silicate solution is 50%-80%, and the mass fraction of an aqueous glycollic acid solution is 15%-25%. The coating has better water resistance and bonding power as well as good wear resistance, and furthermore, the photocatalytic degradation effect on nitrogen oxide is better.

Description

technical field [0001] The invention belongs to the technical field of chemical coatings, and in particular relates to a photocatalyst coating and a preparation method thereof. Background technique [0002] Combining photocatalyst nano-titanium dioxide with coating materials to prepare coatings with photocatalytic effects, which can be applied to road surfaces, isolation piers, road edges, railings, etc., can effectively absorb and decompose automobile exhaust, and will be the key to controlling more and more automobile emissions The application direction of the pollution caused by the exhaust gas. At the same time, water-based inorganic coatings use water as the medium, and have a series of advantages such as non-toxic, odorless, free of volatile and other organic substances, convenient construction, rich raw material resources, and low prices. Water-based inorganic coatings have the advantages of high hardness and good wear resistance, but the biggest disadvantages of wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D7/12
CPCC09D133/04C08K3/22C08K3/34C08K3/36C08K5/09C08K13/02C08K2003/2241C08K2201/011C09D7/61C09D7/63
Inventor 肖建军许道立刘改正张国峰
Owner LUOYANG LVREN ENVIRONMENTAL EQUIP
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