Nano antibacterial aqueous woodenware paint and preparing method thereof

Abstract

The invention relates to a paint, in particular to a single-component nanometer antibacterial water-based wood paint and a preparation method thereof. In the present invention, three different water-based polyurethane resin emulsions, water-based acrylic modified polyurethane resin emulsions and nanometer water-based acrylic resin emulsions are mixed in different proportions as a film-forming material, and while successfully reducing product costs, it also has a low VOC value , anti-adhesion, scratch resistance, pollution resistance, yellowing resistance and good sealing characteristics. The composite inorganic antibacterial agent used in the present invention uses organic expansive soil prefabricated sol as a carrier, contains a variety of inorganic nano-components, not only has the advantages of environmental protection, broad-spectrum antibacterial and strong antibacterial function durability, but also is easy to mix and process, solving the problem of ordinary inorganic antibacterial agents. The technical problems of easy sedimentation, easy discoloration and easy agglomeration during the production and processing of antibacterial agents.

Description

【Technical field】 [0001] The invention relates to a paint, in particular to a single-component nanometer antibacterial water-based wood paint and a preparation method thereof. 【Background technique】 [0002] At present, most of the traditional wood lacquers are solvent-based wood lacquers, mainly solvent-based polyurethane and nitro-lacquer. Due to the relatively high total volatile organic compound (VOC), this kind of wood lacquer has relatively large environmental pollution and affects people's health. Especially with the widespread use of computers, people's lifestyles have gradually changed from outdoors to indoors, which is more likely to cause serious "indoor environmental pollution". [0003] Internationally, the use of solvent-based wood lacquers has been strictly restricted. In Europe, the production and sales of solvent-based paints were completely banned in 2004. my country also plans to completely ban solvent-based wood lacquers by 2008. And water-based wood ...

AI Technical Summary

Problems solved by technology

In patent applications 200410075486.1 and 200410065860.X, nano-titanium dioxide (actually anatase nano-titanium dioxide, also known as photocatalyst) is used as the main antibacterial component. The disadvantage is that photocatalyst reaction needs to occur under the irradiation of ultraviolet light (including the ultraviolet band in natural light) , and will cause degradation of organic components including the paint itself

[0006] Patent application 02120734.8 uses an organic antibacterial agent, which has the disadvantages of poor stability, easy degradation, and harmful residues

In patent 200510102460.6, a mixed dispersion of nano-silver powder and photocatalyst powder is used as an antibacterial component. The main problem is that silver is easily oxidized and discolored, and its stability is poor. Nano-silver powder and nano-titanium dioxide powder are also easy to agglomerate and settle, which is especially not suitable for topcoat varnishes.