Environment protectional photocatalyzed paint for inner wall

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...

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 photocatalyst particles; Japanese Patent Laid-Open Hei 5-253544 is in An adhesive layer is formed on the surface of the plate-shaped substrate, and the photocatalyst powder is exposed from the adhesive layer by blowing, and then heated to 300°C-900°C to melt the adhesive layer, and then cooled to solidify

These three preparation methods all involve high-temperature treatment on the surface of the substrate, so it is difficult to use for some materials that are not resistant to high temperatures such as plastic surfaces