Environment protectional photocatalyzed paint for inner wall

A technology for interior wall coatings and photocatalysis, applied in coatings, latex paints, etc., can solve problems such as inconvenient construction, cumbersome steps, and difficult use of plastic surfaces

Inactive Publication Date: 2004-11-10
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can form a firm photocatalytic layer on the surface of the substrate, but the steps are cumbersome, involving the thermal curing process of the resin, and the construction is inconvenient; CN1101591A selects toluene as a solvent, and prepares a photocatalyst composite with fluorinated high polymer and photocatalyst particles , add a hardener to solidify at a temperature lower than 400°C to form a film; Japanese Patent Application Publication Hei 4-334552 melts a fluorinated polymer by heating to bond ph

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: Take anatase phase nano-titanium dioxide TiO 2 (A), adding a certain amount of water and polycarboxylate dispersant, and sanding for 6 hours at 4000 rpm, the photocatalyst TiO 2 The solid content of the dispersion was 30%.

[0026] Then take 10 grams of pigment titanium dioxide, 15 grams of heavy calcium carbonate, 4 grams of talcum powder, 3 grams of kaolin, 1 gram of aluminum silicate, 1 gram of polysiloxane defoamer, and wetting agent modified alkylphenol polymer. 1 gram of vinyl ether, 2 grams of polycarboxylate dispersant, and 20 grams of water were stirred together at high speed in a high-speed mixer for 1 hour, and finally 10 grams of the above-mentioned photocatalyst dispersion was added, and then stirred at high speed for 30 minutes to obtain a paste.

[0027] Under low-speed stirring, add 20 grams of silicon-acrylic emulsion, 10 grams of silica sol, and 3 grams of water to the above-mentioned paste, and disperse for 30 minutes to obtain a photoc...

Embodiment 2

[0029] Embodiment two: adopt the pigment slurry identical with embodiment one. Add 12 grams of silicone-acrylic emulsion, 12 grams of acrylic emulsion, and 9 grams of silica sol under low-speed stirring, and disperse for 30 minutes to obtain a photocatalytic interior wall paint.

[0030] The paint of the above formula was coated on an asbestos cement board of 150mm×70mm×(4-6)mm, and dried at room temperature for 1 hour to become the photocatalytic coating (sample b) of the present invention.

Embodiment 3

[0031] Embodiment 3: adopt the pigment slurry identical with embodiment 1. Add 24 grams of acrylic acid emulsion and 9 grams of silica sol under low-speed stirring, and disperse for 30 minutes to obtain a photocatalytic interior wall paint.

[0032] The paint of the above formula was coated on an asbestos cement board of 150 mm × 70 mm × (4-6) mm, and dried at room temperature for 1 hour to become the photocatalytic coating (sample c) of the present invention.

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PUM

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Abstract

The invention relates to an environment-friendly photocatalysis inner wall paint and process for preparation, wherein the weight percent of raw material constituents are, one or two of acrylic-styrene emulsion and polyacrylic ester emulsion or their mixed liquor 10-35%, silicasol 5-15%, or mixed phase titanium oxide particles of octahedrite phase and rutile phase, or surface treated titanium oxide composite particles, the paint comprises photocatalyst 2-15%, pigment, filling material and other additive 10-20%, and water for the rest. The invention can effectively degrade the contaminant in the surrounding air.

Description

technical field [0001] The invention relates to an environment-friendly photocatalytic interior wall paint and a preparation method thereof. Specifically, the present invention relates to a photocatalytic interior wall coating that can be used for indoor air purification, and has functions such as anti-pollution, antibacterial, self-cleaning, and defogging on the material surface, and a manufacturing method thereof. The invention belongs to the technical field of building polymer chemical paint manufacturing technology. Background technique [0002] Titanium dioxide photocatalysts are irradiated by light waves with a wavelength not smaller than the energy of the bandgap, and electrons jump to the conduction band under the action of photoexcitation, and at the same time generate corresponding holes in the valence band. The resulting strong reducing ability and strong oxidizing ability can be used in The decomposition of organic matter, so this photocatalytic technology is wi...

Claims

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Application Information

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IPC IPC(8): C09D5/02C09D133/08C09D143/00
Inventor 施利毅孙颖卿张剑平
Owner SHANGHAI UNIV
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