Anti-bleeding lumber primer and application thereof

Abstract

The invention relates to an anti-bleeding lumber primer and application thereof. A polyisocyanate solution used as an anti-bleeding lumber primer is coated on the surface of easily-bled lumber to react with hydroxyls, carboxyls, and the like in the lumber and forms a compact primer film on the lumber surface so that the aims of effectively restraining a pigment in the lumber and preventing the pigment from upwards bleeding are achieved. Compared with the prior art, the anti-bleeding lumber primer has simple preparation method, simple and convenient construction, low cost and good sealing effect.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an anti-bleeding wood primer and its application. Background technique [0002] In recent years, solid wood furniture has become more and more popular due to its natural characteristics. Among them, Paulownia, as a fast-growing tree species, grows fast, is light in material and is not easy to crack and deform, so it is used in a large amount. However, natural wood contains pigments such as tannic acid, which can be dissolved in water and organic solvents, especially the loose wood of paulownia wood, which has a high pigment content. When the wood is painted, the pigment As the water or solvent in the paint penetrates into the surface of the paint film, it will affect the appearance of the paint film. [0003] In order to prevent the above phenomenon, people generally soak or bleach the wood first, and then process and paint after it dries. These measures can indeed play a certain role i...

AI Technical Summary

Problems solved by technology

However, natural wood contains pigments such as tannic acid, which can be dissolved in water and organic solvents, especially the loose wood of paulownia wood, which has a high pigment content. When the wood is painted, the pigment It will penetrate into the surface of the paint film with the water or solvent in the paint, affecting the appearance of the paint film

[0003] In order to prevent the above phenomenon, people generally soak or bleach the wood first, and then process and paint after it dries. These measures can indeed play a certain role in preventing color bleeding, but the operation time is long and the process Complicated, but also can not completely prevent the penetration of pigment

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