Polishing-free unsaturated polyester coating material and preparation method thereof

Abstract

The invention discloses a polishing-free unsaturated polyester coating material and a preparation method thereof. The polishing-free unsaturated polyester coating material mainly comprises unsaturated polyester, styrene, a dispersing agent, a wetting agent, a defoaming agent, a hydroquinone solution, methylbenzene and a leveling agent. According to the invention, the adopted resin is unsaturated polyester 5010 with good air-drying property and is matched with unsaturated polyester 988 with good leveling property, so that the formula has the characteristic of good leveling property while providing proper drying property; the intensity of the redox reaction is reduced through the use amount of hydroquinone, and the influence of suddenly increased shrinkage stress on paint film leveling is reduced; and the short-wave and long-wave leveling of the paint film can be better improved through the matched use of the added organic silicon leveling agent and acrylic acid leveling agent.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a polishing-free unsaturated polyester coating and a preparation method thereof. Background technique [0002] As one of the most widely used paints, unsaturated polyester paint has higher film plumpness, hardness and gloss than other paints; its water resistance, heat resistance and short-term mild flame resistance are better than other paints , a thicker paint film can be obtained by one brushing, and the requirement for the coating temperature is not high, so it is favored by people, especially in the musical instrument industry. With the improvement of people's living standards, the warming up of amateur interests, especially the cultivation of children's interest in music, has made the use of musical instruments more and more in recent years, and the market share of unsaturated polyester paint has increased accordingly. [0003] Common unsaturated polyester pai...

AI Technical Summary

Problems solved by technology

[0003] Common unsaturated polyester paints on the market are not bright enough due to wax content, and the shrinkage rate of the paint film is relatively large during curing, resulting in an uneven surface of the paint film. Polishing is required to obtain a smooth and bright effect

However, many parts of different components are difficult to process with a polishing machine

[0004] In the existing disclosed technology, Chinese patent CN105111902A discloses a piano varnish without wax. The combination of PU bright clear topcoat and waxy PE bright clear topcoat requires high construction environment temperature and workers' proficiency; Chinese patent CN102732072A discloses a high-adhesion non-polishing PE clear topcoat. Unsaturated resin and allyl multifunctional group, adding fluorocarbon modified self-healing acrylic resin, etc., can obtain high adhesion non-polishing PE clear topcoat, which has relatively high adhesion on the basis of non-polishing effect, but The coating process prepared by this method is complicated, the cost is high, and it cannot meet the needs of most users.

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