Method for preparing nanometer titanium dioxide (TiO2) self-cleaning film

A nano-titanium dioxide, self-cleaning technology, applied in metal material coating process, fusion spraying, coating, etc., can solve the problem of low bonding strength between the coating and the substrate, and achieve good timeliness, compact bonding, and low porosity Effect

Inactive Publication Date: 2012-07-11
TRINA SOLAR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coating prepared by this method has low bonding strength to the substrate, and the coating components are loose and peeled off, so it is not suitable for the structure of durable consumer goods such as photovoltaic modules and curtain walls

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] A method for preparing a nano-titanium dioxide self-cleaning film, comprising the steps of:

[0011] (1) The titanium-containing compound is made into granular powder, wherein the titanium-containing compound is an oxide of titanium or an inorganic salt of titanium, and the particle size of the titanium-containing compound granular powder is 80 to 350 meshes; the titanium-containing compound is made into The specific method of forming granular powder is as follows: putting the titanium-containing compound into a ball mill to produce the desired granular powder after ball milling. Alternatively, the titanium-containing compound is pressed and shaped followed by sintering and then the obtained sintered product is pulverized to prepare granular powder. Alternatively, spray granulation is used to prepare granular powders of the desired particle size. The titanium-containing compound contains one or more of cerium, yttrium, strontium, tin, iron, tungsten, zinc, and cadmium....

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Abstract

The invention relates to a method for preparing a nanometer titanium dioxide (TiO2) self-cleaning film. The method comprises the following steps of: (1) preparing granular powder from a titanium-containing compound, wherein the titanium-containing compound is oxide or inorganic salt of titanium, and the granularity of the granular powder prepared from the titanium-containing compound is 80 to 350 meshes; (2) performing cleaning pretreatment on a substrate to be sprayed; and (3) conveying the granular powder which is prepared from the titanium-containing compound and taken as a spraying raw material to a plasma arc by using a spray gun, quickly heating the spraying raw material until the spraying raw material is melted or semi-melted, allowing the spraying raw material to impact the surface of the pretreated substrate along with plasma jet, and reacting to form a TiO2-based film on the surface of the substrate. The TiO2-based film prepared by the method has small thickness, slightly influences the transmittance of the substrate, is compactly combined with the substrate, and has low porosity, high timeliness, corrosion resistance and high-temperature oxidation resistance.

Description

technical field [0001] The invention relates to a preparation method of a self-cleaning nano-titanium dioxide film. Background technique [0002] Photovoltaic modules, curtain walls, etc. are more and more widely used, but their cleaning is a headache. Using detergent to clean not only pollutes the environment, but also wastes a lot of water resources. Self-cleaning glass that relies on natural rainwater is The most effective way to fundamentally solve glass cleaning. [0003] CN1235983C discloses a preparation method of nanostructure titanium dioxide photocatalytic coating. Using titanium-containing organic salts, inorganic salts, nano-powders, and nano-amorphous amorphous titanium compounds as raw materials, the nanostructured TiO is prepared on the substrate by liquid thermal spraying. 2 Photocatalytic coating. During the spraying process, the liquid is atomized into fine droplets by the nozzle of the spray gun and then enters the high-temperature and high-speed flame ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/12C23C4/10C23C4/11C23C4/134
Inventor 王辉王永飞
Owner TRINA SOLAR CO LTD
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