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Nanometer titanium dioxide coating liquid and its production

A technology of nano-titanium dioxide and coating liquid, applied in the direction of coating, etc., can solve the problems of nano-titanium dioxide film lack of mechanical durability, high-temperature thermal decomposition of organic matter, high manufacturing cost, etc., achieve excellent transparency and photocatalytic activity, and simple preparation method , The effect of low preparation cost

Inactive Publication Date: 2006-11-01
王春来
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are not only expensive to manufacture, but also have poor photocatalytic activity, making it difficult to popularize them in production and application.
At present, most commercial films with photocatalytic properties are generally prepared by the sol-gel method, but the nano-titanium dioxide films prepared by this method lack mechanical durability, and it is difficult to ensure the thickness of the film when coating a large area. Uniformity; Another disadvantage of the sol-gel method is that high-temperature thermal decomposition of organic matter is required in the coating process, which limits the large-area coating
[0004] This shows that above-mentioned existing nano-titanium dioxide thin film and preparation method thereof still have many defects, and urgently need to be further solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 10 g of titanium sulfate and dissolve it in 800 ml of distilled water, add 50 ml of 25% ammonia water under constant stirring and react for 30 minutes to completely precipitate the titanium hydroxide. Wash and filter the obtained titanium hydroxide precipitate, prepare 800ml suspension with distilled water, add 20ml of 30% aqueous hydrogen peroxide solution at 90°C and react for 6 hours to obtain TiO 2 Content 0.2%, TiO 3 2H 2 O content 0.2% coating solution.

Embodiment 2

[0023] Weigh 28g of tetrabutyl titanate in 800ml of distilled water, add 100ml of 25% sodium hydroxide solution under continuous stirring and react for 30 minutes to completely precipitate the titanium hydroxide. Wash and filter the obtained titanium hydroxide precipitate, prepare 800ml suspension with distilled water, add 50ml of 30% hypochlorous acid aqueous solution and heat at 95°C for 5 hours to obtain TiO 2 Content 0.6%, TiO 3 2H 2 A coating solution with an O content of 0.5%.

Embodiment 3

[0025] Weigh 40 g of titanium tetrachloride and dissolve it in 800 ml of distilled water, add 200 ml of 25% ammonia water under constant stirring and react for 30 minutes to completely precipitate titanium hydroxide. Wash and filter the obtained titanium hydroxide precipitate, prepare 800ml suspension with distilled water, add 100ml of 30% perchloric acid aqueous solution and heat at 100°C for 4 hours to obtain TiO 2 Content 1.3%, TiO 3 2H 2 A coating solution with an O content of 0.6%.

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PUM

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Abstract

A nanometer titanium dioxide coating liquid and its production are disclosed. The coating liquid is water soluble, whose pH ranges between 5-9, and it contains TiO2 grains with diameter <20nm and inorganic water soluble adhesion disperser. It has excellent transparency, adhesion and catalytic activity and can form hardened thin-film on substrate surface, furthermore, it is simple, costs low and has excellent stability and deodorization and clean performances.

Description

technical field [0001] The invention relates to a nano-titanium dioxide coating solution. More specifically, the present invention relates to a water-soluble coating solution that can form a transparent and dense film containing nano-titanium dioxide on the surface of metal, ceramics, stone, glass, plastic, wood and other substrates at normal temperature. The invention also relates to a preparation method of the coating liquid. Background technique [0002] Due to its good photocatalytic activity, nano-titanium dioxide has important application value in many fields such as self-cleaning and antifouling technology, sterilization, deodorization, degradation of pollutants in air and water, anti-fog and absorption of ultraviolet rays. However, because the powdery titanium dioxide particles are fine, they are condensed in aqueous solution and difficult to recycle, and the powdery titanium dioxide particles themselves have no adhesion, so they need to be used in conjunction with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00
Inventor 王春来
Owner 王春来