Transparent primer with high anti-sag performance and preparation method thereof

Abstract

The invention relates to a high-sinking-resistance transparent primer and a preparation method thereof. The high-sinking-resistance transparent primer is particularly suitable for application on a wood substrate and especially suitable for application on a substrate with deeper wood-grain guide tubes. The primer is prepared from a main paint, a curing agent and a diluter in a mass ratio of 1:0.5:(0.3-1):0.5:0.7. The main paint is prepared from the following raw materials in parts by mass: 55-70 parts of small-oil-length alkyd resin, 5-15 parts of castor oil modified alkyd resin, 3-10 parts of zinc stearate, 0-30 parts of talcum powder, 0.5-1 part of anti-settling agent, 0.3-1 part of defoamer, 0.2-0.5 part of leveling agent, 0.1-0.5 part of wetting and dispersing agent, 0.1-0.3 part of drier and 5-15 parts of environment-friendly mixed solvent. The primer can be well combined with the substrate after being applied, and has excellent properties in the aspect of wood grain / guide tube filling. After the primer is placed for a long time, the paint film of the finish paint can not shrink, and can not generate the phenomenon of sinking.

Description

technical field [0001] The invention relates to a transparent primer with high anti-sag performance and a preparation method thereof, which is especially suitable for coating solid wood substrates, especially for substrates with deep wood grain conduits. Background technique [0002] Now the home improvement market is expanding rapidly, especially the development of solid wood furniture is particularly rapid. However, due to the lack of forest resources and the soaring price of precious wood, the profit margin of solid wood furniture has begun to shrink, and businesses are beginning to use some cheap wood that was not often used. As raw materials, the price of such raw materials is relatively cheap, but the scope of use is limited, such as ash and black walnut. Due to the wood texture of this kind of wood and the deep pipes of the wood itself, there are more raw materials for open-painted furniture. If ordinary PU closed paint is used, the paint will be dry in about one week...

AI Technical Summary

Problems solved by technology

[0002] Now the home improvement market is expanding rapidly, especially the development of solid wood furniture. However, due to the lack of forest resources and the soaring price of precious wood, the profit margin of solid wood furniture has begun to shrink. As raw materials, the price of such raw materials is relatively cheap, but the scope of use is limited, such as ash and black walnut, etc.

Because the wood texture of this kind of wood and the conduit of the wood itself are relatively deep, there are more raw materials for open-painted furniture. If ordinary PU closed paint is used, the paint will be dry in about one week to three months after the construction is completed. The physical properties of the primer coating itself and the shrinkage phenomenon due to the depth of the substrate and other reasons, and this shrinkage will directly affect the adhesion between the primer and the topcoat, the surface leveling of the paint film, etc. Dented or cracked finish renders the entire furniture product useless

This greatly limits the application of deep wood grain and deep duct wood in the field of furniture

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