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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1

[0031] Take the crystal form as anatase, the mass accounts for 2% of the total paint, the particle size is 50-70nm nanometer titanium dioxide, add sodium hexametaphosphate solution (the mass of sodium hexametaphosphate is 2.5% of the mass of nanometer titanium dioxide), add together In the potassium water glass solution with a mass fraction of 40% and a modulus of 2.8, the potassium water glass accounts for 20% of the total mass of the coating. After mixing evenly, add diatomaceous earth (the mass of diatomaceous earth accounts for 8% of the total mass of the coating) And precipitated barium sulfate (the mass of precipitated barium sulfate accounts for 20% of the total mass of the paint), after high-speed dispersion uniformly, finally add a 10% mass fraction of condensed phosphate solution, the condensed phosphate accounts for 1% of the total mass of the paint, the rest add water, Then stir at 150 rpm for 30 minutes to obtain the nanometer titanium dioxide wate...

Example Embodiment

[0033] Example 2

[0034] Take the crystal form as anatase, the mass accounts for 3% of the total paint, and the particle size is 30-50nm nanometer titanium dioxide, add sodium hexametaphosphate solution (the mass of sodium hexametaphosphate is 2.5% of the mass of nanometer titanium dioxide), and add them together To the potassium water glass solution with a mass fraction of 43% and a modulus of 3.1, the potassium water glass accounts for 28% of the total mass of the coating. After mixing evenly, add diatomaceous earth (the mass of diatomaceous earth accounts for 15% of the total mass of the coating) And precipitated barium sulfate (the mass of precipitated barium sulfate accounts for 13% of the total mass of the coating), after high-speed dispersion uniformly, finally add a 10% mass fraction of condensed phosphate solution, the condensed phosphate accounts for 3% of the total mass of the coating, the rest add water, Then stir for 30 minutes at a speed of 150 rpm to obtain the na...

Example Embodiment

[0036] Example 3

[0037] Take the crystal form of anatase, the mass accounted for 5% of the total paint, the particle size is 30-60nm nanometer titanium dioxide, add sodium hexametaphosphate solution (the mass of sodium hexametaphosphate is 2.8% of the nanometer titanium dioxide mass), add together To the potassium water glass solution with a mass fraction of 45% and a modulus of 3.5, the potassium water glass accounts for 30% of the total mass of the coating. After mixing evenly, add diatomaceous earth (the mass of diatomaceous earth accounts for 20% of the total mass of the coating) And precipitated barium sulfate (the weight of precipitated barium sulfate accounts for 18% of the total mass of the coating), after high-speed dispersion uniformly, finally add a 10% mass fraction of condensed phosphate solution, the condensed phosphate accounts for 5% of the total mass of the coating, the rest add water, Then stir for 30 minutes at a speed of 150 rpm to obtain the nanometer titan...

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PUM

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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
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