A kind of water-based leather texture paint and its coating process

Abstract

A water-based leather texture paint, the water-based leather texture paint is made of water-based leather texture primer, water-based leather texture top coat and water-based enamel enamel paint according to the coating process, the primer and top coat form the skin texture shape together, and the enamel enamel paint is responsible for Color modification and varnish protection for skin grain effect. The three coatings use water-based hydroxyl acrylic resin as the main resin of the coating film, supplemented by methylated melamine-formaldehyde resin as a high-temperature crosslinking agent, and water-based CAB and some alcohol solvents are introduced into the formulation system to achieve ideal surface dryness Speed, also use high oil absorption fillers such as meteorological silica and talcum powder to adjust the critical PVC concentration of the formula system and adjust the shrinkage stress of the coating film. The coating process of water-based leather texture paint is: after spraying the water-based leather texture primer, the surface is dried for five minutes at room temperature, and then sprayed with water-based leather texture topcoat, and then treated at a constant temperature of 150°C for 20 minutes, and then sprayed with water-based leather texture enamel Enamel varnish, and then treated at a constant temperature of 150°C for 20 minutes.

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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