ASTM D4752-20: Δοκιμή αντοχής σε MEK ασταριών πυριτικού αιθυλεστέρα ψευδαργύρου

ASTM D4752-20 provides a reliable method for testing whether zinc-rich primers are ready for the next coating layer. This standard uses a simple solvent rub technique to check how well ethyl silicate zinc-rich primers resist methyl ethyl ketone (MEK). The test helps you determine if your primer has cured enough before applying topcoats, preventing costly…