Water-based wood anti-swelling tendon sealing primer

Abstract

The invention discloses a water-based anti-expansion tendon sealing primer for woodware, which comprises the following raw material components in weight percentage: 60-75% of polyurethane-acrylic hybrid resin, 0.1-0.3% of leveling agent, and 0.3-0.5% of wetting agent , defoamer 0.2-0.3%, dispersant 2-3%, elastic powder 4-16%, thickener 0.5-3%, performance additive 0.1-1%, deionized water balance. The water-based anti-swelling tendon sealing primer of the present invention adopts self-crosslinking polyurethane-acrylic acid hybrid resin as the main raw material, and is equipped with elastic powder (especially kaolin and bentonite) and specific additives, which can effectively prevent loosening The soft wood with more textures has the problem of tendon swelling after spraying with water-based primer, so that the original texture will not be damaged, so as to maintain a better surface effect.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based anti-expansion tendon sealing primer for woodware. Background technique [0002] Due to its excellent environmental protection characteristics, water-based wood paint greatly reduces the emission of organic solvents to the atmosphere, avoids environmental pollution and physical hazards to construction workers, and has the advantages of convenient use and simple construction. With the continuous improvement of environmental protection requirements in various countries Improvement, water-based wood lacquers have also begun to replace traditional organic solvent-based coatings and have been widely promoted and applied. Water-based wood sealing primer is a kind of water-based paint. It usually plays a role in effectively sealing wood, improving the adhesion of the topcoat, increasing the fullness of the topcoat, and providing anti-corrosion and other functions. Howeve...

AI Technical Summary

Problems solved by technology

[0003] In recent years, the advantages of water-based wood lacquers have become increasingly obvious, and there are many studies on them. In the prior art, there are water-based wood sealing primers prepared from pure water-based acrylic emulsions, which have excellent color sealing properties, fast drying speed, and fine particle size. , It can prevent wood swelling and has good sanding properties, but because the sealing primer prepared by acrylic resin has poor flexibility, poor leveling effect, low fullness, and poor wettability to fillers, so It is necessary to add a large amount of co-solvent to improve its performance, which limits its popularization and application to a certain extent.

There is also the use of modified silica sol to modify acrylic resin, but its preparation method is more complicated, unstable in water-based paint, and also brings some practical disadvantages

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