Powder paint applied to medium-density fiberboard, and preparation method and application thereof

Abstract

The invention discloses powder paint applied to a medium-density fiberboard. The paint comprises the following components by weight percent: 30 to 45 percent of polyester resin, 24 to 30 percent of epoxy resin, 0.8 to 1.2 percent of flatting agent, 18 to 25 percent of pigment, 0 to 18 percent of inorganic filler and 0 to 5 percent of accessory ingredient. The invention also discloses a preparation method of the powder paint as well as an application of the powder paint in the medium-density fiberboard. The powder paint is solidified by adopting the conventional hot roasting method, so that the medium-density fiberboard is not damaged; moreover, the powder paint can be sufficiently fused and flatted and can be adequately completely solidified. When the powder paint is applied to the medium-density fiberboard, the glossiness is high, and the coating solvent-resisting property, the moisture resistance, the hardness and the adhesive force are excellent.

Description

technical field [0001] The invention relates to a preparation method of a powder coating, specifically a powder coating applied to medium-density fiberboards. The invention also relates to a preparation method of the powder coating and its application on medium-density fiberboards, belonging to the field of coating industry. Background technique [0002] Due to the advantages of environmental protection and economy, powder coatings are widely used on metal surfaces. With the continuous development of powder technology, powder coatings have been successfully applied to wood materials, but because wood materials such as MDF are sensitive to temperature, generally more than 130 -140°C will affect its internal stress, and it is prone to quality problems such as cracking and poor hardness. Due to the limitations of technology and process, the curing process of powder coatings currently used on MDF is basically mid-infrared curing or UV curing. Since mid-infrared and UV curing pro...

AI Technical Summary

Problems solved by technology

[0002] Due to the advantages of environmental protection and economy, powder coatings are widely used on metal surfaces. With the continuous development of powder technology, powder coatings have been successfully applied to wood materials, but because wood materials such as MDF are sensitive to temperature, generally more than 130 -140°C will affect its internal stress, and it is prone to quality problems such as cracking and poor hardness.

Due to the limitations of technology and process, the curing process of powder coatings currently used on MDF is basically mid-infrared curing or UV curing. Since mid-infrared and UV curing processes are very fast curing speeds, the curing time is measured in seconds. Therefore, the coating film does not have enough time to melt and level, so the obtained powder coating coating is basically an art texture such as sand grain, the gloss is about 10%, the coating film is not bright enough, and it is difficult to achieve the surface effect of paint

In addition, due to the complicated curing process of medium density fiberboard, expensive process equipment and unstable process, powder coatings cannot be widely used in medium density fiberboard.

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