Quick dry intermediate paint for automotive repairing and preparation method of quick dry intermediate paint

Abstract

The invention relates to quick dry intermediate paint for automotive repairing and a preparation method of the quick dry intermediate paint, and belongs to the coating filed. The intermediate paint comprises components in weight of 15-30 parts of hydroxy resin, 20-40 parts of an organic solvent, 5-15 parts of a cross-linking curing agent, 35-55 parts of pigment, 0.5-3 parts of a dispersing agent, 0-3 parts of an anti-settling agent, 0.1-0.5 part of an antifoaming agent, 0-0.8 part of a flatting agent and 0.01-0.05 part of a drier. Compared with the prior art, the quick dry intermediate paint has a quick self-dry characteristic, and energy is saved; thicker film formation can be realized by one time, the construction time is shortened, the site utilization rate is improved, and the cost is saved; the quick dry intermediate paint has the advantages of good filling property, rubbing property, water resistance, anti-rust property and the like.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an ultra-fast-drying intermediate paint for automobile repair and a preparation method thereof. Background technique [0002] The coatings currently used usually have suitable properties, but 1) The drying time is long. It takes more than 20 minutes to dry the surface at 25°C, and it takes more than 4 hours to dry with finger pressure. It takes at least the next day to reach the state that can be polished; Big construction site. 2) Or heat to 60°C and bake for more than 45 minutes to reach the dryness of finger pressure, which is a waste of energy; 3) The thickness of one-time film formation is only 50-70 microns, which cannot fill the depression of the accident vehicle well, and two steps are required. Touch up the paint once or even three times, wasting a lot of time; 4) It is easy to stick to the sandpaper during grinding, causing grinding defects, or frequently changing the sandpaper...

AI Technical Summary

Problems solved by technology

[0002] The coatings currently used usually have suitable properties, but 1) The drying time is long. It takes more than 20 minutes to dry the surface at 25°C, and it takes more than 4 hours to dry with finger pressure. It takes at least the next day to reach the state that can be polished; large construction site

2) Or heat to 60°C and bake for more than 45 minutes to reach the dryness of finger pressure, which is a waste of energy; 3) The thickness of one-time film formation is only 50-70 microns, which cannot fill the depression of the accident vehicle well, and two steps are required. Touch up the paint once or even three times, wasting a lot of time; 4) It is easy to stick to the sandpaper during grinding, resulting in grinding defects, or frequent replacement of sandpaper, wasting resources

However, as a varnish, the main function of this product is to use it as the top layer. It mainly provides a smooth and flat appearance of the paint film, high hardness, and high gloss. However, there are still certain defects in filling and polishing performance, and the production process requirements are simple.