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Nano titanium dioxide aqueous inorganic photocatalytic coating and preparation method thereof

A technology of nano-titanium dioxide and photocatalysis, which is applied in the field of preparation of nano-titanium dioxide water-based inorganic photocatalytic coatings and nano-titanium dioxide water-based inorganic photocatalytic coatings. , good water resistance and adhesion, and convenient construction

Inactive Publication Date: 2011-03-30
SHENZHEN OCEAN POWER INDUSTRIAL CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the biggest disadvantage of water-based inorganic coatings is 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

[0031] Get the crystal form as anatase, the quality accounts for 2% of the total coating, and the particle size is 50-70nm nano-titanium dioxide, add sodium hexametaphosphate solution (the quality of sodium hexametaphosphate is 2.5% of the quality of nano-titanium dioxide), add together Be 40% in mass fraction, in the potassium water glass solution that modulus is 2.8, potassium water glass accounts for 20% of coating gross mass, after mixing, add diatomite (diatomite quality accounts for 8% of coating gross mass) and precipitated barium sulfate (the quality of precipitated barium sulfate accounts for 20% of the total mass of the coating), after high-speed dispersion is uniform, and finally add the condensed phosphate solution with a mass fraction of 10%, the condensed phosphate accounts for 1% of the total mass of the coating, and the rest add water, Stir at a speed of 150 rpm for 30 minutes to obtain a nano-titanium dioxide water-based inorganic photocatalytic coating.

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Embodiment 2

[0034] Get the crystal form as anatase, the quality accounts for 3% of the total coating, and the particle size is 30-50nm nano-titanium dioxide, add sodium hexametaphosphate solution (the quality of sodium hexametaphosphate is 2.5% of the quality of nano-titanium dioxide), add together Be 43% in massfraction, in the potassium water glass solution that modulus is 3.1, potassium water glass accounts for 28% of coating gross mass, after mixing, add diatomite (diatomite quality accounts for 15% of coating gross mass) and precipitated barium sulfate (the quality of precipitated barium sulfate accounts for 13% of the total mass of the coating), after high-speed dispersion is uniform, and finally add the condensed phosphate solution with a mass fraction of 10%, the condensed phosphate accounts for 3% of the total mass of the coating, and the rest add water, Stir at a speed of 150 rpm for 30 minutes to obtain a nano-titanium dioxide water-based inorganic photocatalytic coating.

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Embodiment 3

[0037] Get the crystal form as anatase, the quality accounts for 5% of the total coating, and the particle size is 30-60nm nano-titanium dioxide, add sodium hexametaphosphate solution (the quality of sodium hexametaphosphate is 2.8% of the quality of nano-titanium dioxide), add together Be 45% in mass fraction, in the potassium water glass solution that modulus is 3.5, potassium water glass accounts for 30% of coating gross mass, after mixing, add diatomite (diatomite quality accounts for 20% of coating gross mass) and precipitated barium sulfate (the quality of precipitated barium sulfate accounts for 18% of the total mass of the coating), after high-speed dispersion is uniform, and finally add the condensed phosphate solution with a mass fraction of 10%, the condensed phosphate accounts for 5% of the total mass of the coating, and the rest add water, Stir at a speed of 150 rpm for 30 minutes to obtain a nano-titanium dioxide water-based inorganic photocatalytic coating.

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Abstract

The invention discloses a nano titanium dioxide aqueous inorganic photocatalytic coating and a preparation method thereof. The coating comprises nano titanium dioxide, sodium hexametaphosphate, potash water glass, filler, an inorganic curing agent and water. The preparation method comprises the following steps of: adding the nano titanium dioxide to an sodium hexametaphosphate aqueous solution serving as a dispersing agent and then evenly stirring, then adding to a potash water glass aqueous solution and evenly stirring, then evenly mixing and dispersing with the filler and then adding the inorganic curing agent and evenly stirring to obtain the nano titanium dioxide aqueous inorganic photocatalytic coating. The nano titanium dioxide aqueous inorganic photocatalytic coating has better water tolerance and cohesive force, good effect of photocatalytically degrading nitric oxide, does not pollute the environment and has available raw material sources and low price.

Description

technical field [0001] The invention relates to a water-based inorganic photocatalytic coating, in particular to a nano-titanium dioxide water-based inorganic photocatalytic coating. [0002] The invention also relates to a preparation method of nano titanium dioxide water-based inorganic photocatalytic coating. Background technique [0003] Combining photocatalyst nano-titanium dioxide with coating materials to prepare coatings with photocatalytic effects and coating them on road railings and other buildings will be the future application direction. From the perspective of environmental protection, water-based inorganic coatings will gradually replace solvent-based coatings. Coatings are the future research direction. Water-based inorganic coatings use water as the medium, and have a series of advantages such as non-toxic, odorless, free of VOC and other organic substances, convenient construction, rich raw material resources, and low prices. Therefore, adding photocatalys...

Claims

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Application Information

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IPC IPC(8): C04B28/34C04B22/16C04B14/08
Inventor 张秀坤何唯平
Owner SHENZHEN OCEAN POWER INDUSTRIAL CO LTD