Preparation and application method of optical catalysed environment protection type coating

An environmentally friendly, photocatalytic technology, applied in coatings and other directions, can solve the problems of weak light absorption, inability to effectively contact pollutants, weak photocatalytic decomposition, etc., to achieve convenient operation, thin isolation layer and photocatalytic coating, Ease of use for promotion

Inactive Publication Date: 2007-09-19
YUNNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above technologies have the following problems: first, titanium dioxide is easily wrapped by binders, various additives, fillers or surfactants, which not only weakens the light absorption rate, but also cannot effectively contact with pollutants, and the photocatalytic decomposition effect is weak; If the coating is directly applied on the organic coating substrate, the organic substrate will be gradually decomposed after long-term contact

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: add silver nitrate in the nano anatase type titanium dioxide aqueous sol that is prepared by raw material as titanium-containing organic matter, water, chelating agent and hydrolysis inhibitor, and mix homogeneously, the content of silver ion in the added silver nitrate accounts for 10% of the mixed The percentage by weight of the sol is 0.001%.

Embodiment 2

[0025] Embodiment 2: add platinum nitrate in the nano anatase type titanium dioxide aqueous sol that is prepared by raw material as titanium-containing organic matter, water, chelating agent and hydrolysis inhibitor, and mix uniformly, the content of platinum ion in the added platinum nitrate accounts for The percentage by weight of the mixed sol is 0.01%.

Embodiment 3

[0026] Embodiment 3: add copper nitrate in the nano anatase type titanium dioxide aqueous sol that is prepared by raw material as titanium-containing organic matter, water, chelating agent and hydrolysis inhibitor, and mix uniformly, the content of copper ion in the added copper nitrate accounts for The percentage by weight of the mixed sol is 0.5%.

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PUM

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Abstract

The invention provides a preparation and application method for photocatalysis environmental protection type painting, which relates to construction painting, especially provides a preparation and application method for photocatalysis function painting, which includes steps: mixing titanium-containing organic, water, chelating agent and hydrolysis inhibitor to prepare nano anatase type titanium dioxide water sol; adding metal, oxide or impure titanium dioxide photocatalyst into the titanium dioxide water sol and stirring equably. Using method is coating inorganic isolated layer firstly and coating the photocatalysis painting after drying. Advantages of the invention are: the prepared painting and using technique can be widely used for inner and outer wall surface of building and is harmless to bottom ainting, photocatalysis efficiency is high, cost is low, bonding is firm, transparency is good, preparation is simple, and usage is easy.

Description

technical field [0001] The invention relates to architectural coatings, in particular to methods for preparing and using coatings with photocatalytic functions. Background technique [0002] Air pollution includes outdoor air pollution and indoor air pollution, especially formaldehyde and benzene series in indoor air are much more harmful to human health than outdoor, such as formaldehyde and benzene series are recognized in the world Potential carcinogens and strong carcinogens, together with other volatile organic compounds, can cause diseases of the respiratory system, blood system and nervous system, and can also cause fetal malformation, which needs to be resolved urgently. Air pollution has many sources and great harm, especially volatile organic gases, which are not only of various types, but also difficult to control, and there is no convenient, effective and practical treatment method. Since titanium dioxide semiconductor photocatalyst can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00
Inventor 柳清菊朱忠其张瑾周密
Owner YUNNAN UNIV
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