| abstract |
The invention relates to a pre-coating primer for railway freight cars and a preparation method thereof. The above-mentioned pre-coating primer for railway freight cars is composed of epoxy modified acrylic resin, deionized water, pH regulator, defoamer, dispersant, zinc phosphate and zinc phosphate. , Silicon powder, iron oxide red, propylene glycol, thickener. The pre-coating primer for railway freight cars provided by the invention has the advantages of fast drying speed, good anticorrosion performance, low VOC content and good compatibility. |