Aqueous crackle paint and coating technology thereof

Abstract

An aqueous crackle paint is prepared by using an aqueous crackle primer, an aqueous crackle finish and an aqueous enamel through a coating technology, the primer and the finish form a crackle shape, and the enamel has color modification and crackle effect finish protection effects. The above three coatings use aqueous acrylic resin as a main body resin of a film and contain methylated melamine formaldehyde resin as a high temperature crosslinking agent, aqueous CAB and parts of an alcoholic solvent are introduced to a formula system in order to achieve an ideal surface drying speed, and fumed silica, talcum powder and other high oil absorbing fillers are used to adjust the critical PVC concentration of the formula system and adjust the shrinkage stress of the film. The coating technology of the aqueous crackle paint comprises the following steps: spring the aqueous crackle primer, carrying out surface drying at normal temperature for 5min, spraying the aqueous crackle finish, carrying out constant temperature treatment at 150DEG C for 20min, spraying the aqueous crackle enamel, and carrying out constant temperature treatment at 150DEG C for 20min to obtain the aqueous crackle paint.

Description

technical field [0001] The invention relates to the field of paints, in particular to a water-based leather texture paint and a coating process thereof. Background technique [0002] Leather texture painting is a relatively mature process effect. After years of research and improvement in the field of coatings, the leather texture paints currently on the market tend to be stable and perfect in terms of cracking effect, physical properties and construction performance. However, the current leather paints in the industry are all oil-based paints with high VOC and strong odor, which are extremely harmful to the human body and the environment, and it is difficult to meet the increasingly stringent environmental protection requirements at home and abroad. Due to its low VOC content and environmental friendliness, the water-based coating has been a development direction that has been pursued in the coating field in recent years, and leather-textured coatings are no exception. Ho...

AI Technical Summary

Problems solved by technology

However, there are many difficulties in making this coating process water-based: for example, the volatilization rate of water is slow, the construction period is long, and it cannot adapt to assembly line operations; under high-temperature baking conditions, water is easy to boil, resulting in boiling and foaming of the paint film ; The volatilization speed of water-based paint is slow, and vertical spraying on the assembly line will easily lead to sagging, etc.

Based on the above reasons, it has been difficult to achieve water-based leather paint

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