Nanoscale coating additive for effectively decomposing formaldehyde and application thereof

An additive and nano-scale technology, applied in the direction of coating, irradiation, etc., can solve the problems of unpopularity and waste of resources, and achieve the effect of strong universality and good dispersion effect

Inactive Publication Date: 2010-07-07
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of household electrical equipment has a high air filtration efficiency, but when the formaldehyde is removed to a harmless concentration, the electrical appliance will be idle, resulting in a waste of resources and cannot be popularized

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0017] Nano-TiO 2 Preparation of hydrosol: Dissolve 10ml tetrabutyl titanate in 35mL absolute ethanol, add the above solution dropwise to 100ml water, add 10ml 1.5mol / L nitric acid after the solution is mixed, and then raise the temperature of the reaction system to 70°C , continue to stir for 2h. Finally, the reaction temperature was lowered to room temperature to obtain TiO 2 Hydrosol. Prepared TiO 2 Hydrosols are stable for at least one year.

[0018] During the evaluation of the following samples, the light intensity was between 300-3000lx. The coating used in the following examples is Nippon paint, but the results of comparative experiments show that the active ingredient for decomposing formaldehyde is the additive of the present invention, which can show that this additive is also suitable for other brands of coatings.

Embodiment 1

[0020] Sample preparation:

[0021] Mix the coating solution and TiO at a volume ratio of 18 / 1 2 After the sol is evenly mixed, paint on a surface of 6×7cm 2 on a cardboard with a thickness of 0.1mm, and let it dry naturally.

[0022] Evaluation of samples:

[0023] After putting the above cardboard into a 150ml reaction bottle, use air as the carrier gas to pass the formaldehyde solution in a 293K constant temperature tank at a flow rate of 50ml / min, and pass the formaldehyde vapor into the reaction bottle. After equilibrating for 1 h, the reaction bottle was sealed. Then put it into a dark box type ultraviolet analyzer (Gongyi Yingshan Yuhua Instrument Factory, ZF-20D) with an ultraviolet wavelength of 365nm to start the reaction. The reaction results are shown in Table 1.

Embodiment 2

[0025] Sample preparation:

[0026] The coating solution and TiO with a volume ratio of 18 / 3 2 After the sol is evenly mixed, paint on a surface of 6×7cm 2 on a cardboard with a thickness of 0.1mm, and let it dry naturally.

[0027] Evaluation of samples:

[0028] The reaction process is the same as in Example 1, and the reaction results are shown in Table 1.

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PUM

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Abstract

The invention relates to application of nanoscale coating additive for effectively decomposing formaldehyde; the active ingredient of the nanoscale coating additive for effectively decomposing formaldehyde is nanometer TiO2 lyosol; in the invention, the nanometer TiO2 for rapidly decomposing the formaldehyde is added in the coating to effectively remove indoor formaldehyde; the method is non-toxic and harmless, has no secondary pollution, low cost and strong universality, and is simple and easy.

Description

technical field [0001] The invention relates to an architectural paint additive, in particular to a nanometer paint additive capable of effectively decomposing formaldehyde and its application. Background technique [0002] Due to the use of various insecticides, detergents, cosmetics, paints, wood products and the application of urea-formaldehyde resin foam insulation boards and coatings in modern buildings, the content of formaldehyde in the room is getting higher and higher, which is much higher than that in modern living rooms. Concentration of formaldehyde in outdoor air. Formaldehyde is a highly volatile organic pollutant. According to epidemiological surveys, people in non-industrial environments (such as indoor residents) are exposed to low concentrations of formaldehyde for a long time, and symptoms such as eye irritation, upper respiratory tract irritation, headache and cough will occur. If long-term inhalation of high-concentration formaldehyde gas, it may also ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D5/00A61L9/18A61L9/20
Inventor 张静吴维成
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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