Waterborne environment-friendly epoxy zinc-rich primer and preparation method thereof

Abstract

The invention provides waterborne environment-friendly epoxy zinc-rich primer and a preparation method thereof. The waterborne environment-friendly epoxy zinc-rich primer is prepared from the following components by weight percent: 40 to 50 percent of waterborne epoxy resin, 15 to 20 percent of antirust agent, 10 to 15 percent of inorganic filler, 15 to 20 percent of water, 0.8 to 1.2 percent of co-solvent, 0.4 to 0.6 percent of dispersing agent, 0.2 to 0.3 percent of moisturizing agent, 0.2 to 0.3 percent of flatting agent, 0.1 to 0.16 percent of defoaming agent, 0.4 to 0.6 percent of thickening agent and 0.3 to 0.4 percent of anti-settling agent. The antirust agent is prepared from zinc powder, zinc oxide and zinc phosphate. The preparation method comprises the following steps: 1) uniformly mixing and stirring the antirust agent, the inorganic filler and the water, wherein the stirring time is 25 to 35 min, grinding, and obtaining a mixture A; and 2) adding waterborne epoxy resin into the mixture A, uniformly stirring for 25 to 35 min, then adding the co-solvent, the dispersing agent, the moisturizing agent, the flatting agent, the defoaming agent, the thickening agent and the anti-settling agent, and uniformly mixing, thus obtaining the waterborne environment-friendly epoxy zinc-rich primer. The primer is environmentally friendly, economical and good in antirust performance.

Description

technical field [0001] The invention belongs to the technical field of paints, and in particular relates to a water-based environment-friendly epoxy zinc-rich primer and a preparation method thereof. Background technique [0002] Traditional container 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 are harmful to the health of construction workers and pollute 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. . Due to the high technical difficulty, no major progress has been made for a long time. Sin...

AI Technical Summary

Problems solved by technology

Disadvantages of 3-component waterborne epoxy zinc-rich coatings: ① The ratio of 3 components needs to be strictly controlled at the construction site

② Zinc powder is mixed at the construction site, and the dust of zinc powder pollutes the environment, which is not good for the health of on-site personnel; ③ It takes a long time for zinc powder to disperse; It is easy to cause the gun to be blocked during spraying, which will affect the construction efficiency