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.