A kind of water-based stretching primer and application method thereof

Abstract

The invention relates to the technical field of primers, in particular to a water-based rib-expanding primer and an application method thereof. The water-based rib-expanding primer includes polyurethane resin, penetrating agent, wetting agent, defoamer, film-forming aid, bactericide, and water, wherein the particle size of the polyurethane resin is less than 50nm, the breaking strength is greater than 20Mpa, and the modulus is 1 -3Mpa. The present invention develops a water-based tendon-increasing primer through the selection of the resin in the composition and the adjustment of formula additives, which can be sprayed on the solid wood substrate to quickly penetrate into the substrate conduit, making it easy to expand the tendon in the substrate conduit The part is fully raised. After the water-based rib-expanding primer is dry, the surface of the rib-expanding part is polished and smoothed, and then the water-based paint is sprayed according to the process. The subsequent process will no longer cause the rib-expanding situation, and the problem of rib-expanding will be completely solved.

Description

technical field [0001] The invention relates to the technical field of primers, in particular to a water-based rib-expanding primer and an application method thereof. Background technique [0002] As a common material, wood is widely used in construction, furniture and other industries. In daily life, wooden products such as wooden utensils and wooden furniture are very common. In order to improve the beauty of wood products and enhance the performance of anti-corrosion, insect resistance and wear resistance, a layer of water-based paint will be coated on the surface of wood products. Water-based paint is an environmentally friendly paint with water as the dispersion medium. During the installation process, the moisture contained in the water-based paint will enter the wood fibers of the wood, especially loose soft wood such as poplar, pine, etc., which will cause the wood fibers to absorb water and swell, causing the surface of the wood to swell and protrude from the surfa...

AI Technical Summary

Problems solved by technology

In order to improve the beauty of wood products and enhance the performance of anti-corrosion, insect resistance and wear resistance, a layer of water-based paint will be coated on the surface of wood products. Water-based paint is an environmentally friendly paint with water as the dispersion medium. During the installation process, the moisture contained in the water-based paint will enter the wood fibers of the wood, especially loose soft wood such as poplar, pine, etc., which will cause the wood fibers to absorb water and swell, causing the surface of the wood to swell and protrude from the surface. It makes the surface rough and uneven, causing the phenomenon of "swelling tendons". Moreover, after the paint dries, the rough and uneven surface of the wood caused by the water absorption of the wood fibers cannot be restored to its original shape, which affects the final effect of the wood products after painting. Water-based woodware made of wood such as poplar, pine, etc., after spraying with water-based paint, the phenomenon of "swelling tendons" seriously affects its appearance and use

[0003] For this reason, a water-based woodware anti-swelling primer has appeared on the market, which is sprayed on the surface of the woodware before spraying the water-based paint, but the existing water-based woodware primer has limited effects and cannot solve the problem of wood, especially loose wood. The phenomenon of "swelling tendons" that occurs after spraying water-based paint on wooden utensils made of high-quality wood such as poplar and pine

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