Water-based epoxy intermediate paint

Abstract

The invention relates to a water-based epoxy intermediate coating, consisting of two components of A and B, wherein component A is produced by grinding, dispersing and other process after the base material of water-based epoxy curing agent is mixed with pigment, filler, additives, co-solvents and water and component B is produced by stirring, filtering and other processes after the base material of water-based epoxy emulsion is mixed with water. The water-based epoxy intermediate coating has no pollution to the environment and is harmless to the workers, secure and convenient in application. Suitable for high-pressure airless spraying, the water-based epoxy intermediate coating is provided with high operation efficiency and 40-200um thickness of a single coating layer. The coating has advantages of fast drying, high mechanical strength and good anticorrosion performance. The water-based coating can be used as intermediate coating for container, as well as inner top finish. Additionally the coating is widely used in the antirust for the iron and steel parts of transportation means like automobiles, trains and ships; of structures like bridges, towers, doors and windows; and of facilities like tanks and pipes.

Description

technical field [0001] The invention relates to a coating, in particular to a water-based epoxy intermediate paint for containers. Background technique [0002] Traditional anti-corrosion coatings are mostly solvent-based coatings. Common varieties include epoxy, chlorinated rubber, acrylic, polyurethane, etc., which contain a large amount of organic solvents. These solvents will be released during production and construction, which is harmful to the health of construction workers. Harmful and pollutes the environment. Since the early 1970s, the development of environmentally friendly anti-corrosion and anti-rust paints such as high solid content, solvent-free, powder and water-based paints has been carried out in foreign countries. Among them, water-based paints have received more research because of their low cost, safe and convenient construction, and easy control of film thickness. . However, due to technical difficulties, great progress has not been made for a long ti...

AI Technical Summary

Problems solved by technology

With the acceleration of production efficiency, higher and more stringent requirements are put forward for water-based coatings. The existing water-based intermediate paints can no longer meet these requirements, such as: 1. Wet-on-wet and dry-on-wet construction exist almost at the same time; In most cases when painting, the intermediate paint is only partially dry, causing the paint film of the top coat to sag, crack, pinhole and other disadvantages