Self-cleaning type coating for wood base, and preparation method and application method of coating

Abstract

The invention belongs to the technical field of coatings, and particularly relates to a self-cleaning type coating for a wood base, and a preparation method and application method of the coating. Theself-cleaning coating for the wood base comprises a middle layer and a self-cleaning layer, wherein the middle layer is sprayed on the wood base, and the self-cleaning layer is sprayed on the middle layer; the middle layer comprises polyurethane, nano silicon dioxide, acrylic acid, ethanol, acrylic ester and nano magnesium hydroxide; and the self-cleaning layer comprises nano titanium dioxide, tetrabutyl titanate, ethanol, water and polyvinyl alcohol. The self-cleaning type coating for the wood base provided by the invention can utilize the photocatalytic reaction of the titanium dioxide in the self-cleaning layer to realized the self-cleaning function; and meanwhile, the polyurethane contained in the middle layer has a corrosion-resistant effect, so that the self-cleaning layer can be prevented from being in direct contact with the wood base for corroding or decomposing the wood base.

Description

Technical field

[0001] The invention belongs to the technical field of coatings, and in particular relates to a self-cleaning coating for wood substrates, a preparation method and a use method thereof. Background technique

[0002] Stain resistance has always been an important indicator for evaluating the quality of coatings. At present, coatings generally suffer from poor stain resistance or non-lasting stain resistance. At the same time, there are problems with coating corrosion or decomposition of substrate materials. It affects the beauty of the coated object and increases the maintenance cost. Moreover, people are paying more and more attention to environmental protection issues. Therefore, the development of a coating that is self-cleaning, environmentally friendly and does not damage its substrate has become an urgent solution. problem. This is especially true for wood substrates. Due to their own characteristics, wood substrates are not only non-stain resistant, but also...

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