ENVIRONMENT-FRIENDLY COATING PROCESS OF STEELS OR STEEL CONSTRUCTION USING FOR ANTI-STAINING

摘要

An environmentally-friendly anti-staining coating method for steel or steel structure is provided to improve endurance and minimize maintenance cost by bonding the outer coating firmly to the inner coating made of aqueous epoxy zinc heavy duty rustproof paint. An environmentally-friendly anti-staining coating method for steel or steel structure includes a step of surface-treating steel or steel structure, a step of coating aqueous epoxy zinc heavy duty rustproof paint on the treated surface of the steel or steel structure, and a step of coating aqueous organic material topcoat after the aqueous epoxy zinc heavy duty rustproof paint is dried and cured. The aqueous epoxy zinc heavy duty rustproof paint consists of a base part and a hardener part. The base part contains epoxy resin 10~20 weight%, cellusolve acetate 3~9 weight%, zinc powder 30~70 weight%, active ceramic powder 2.5~7.5 weight%, anti-sagging agent 1.8~5.5 weight%, and additive 0.2~0.5 weight%. The hardener part contains polyamide resin 2~6 weight%, polyamine resin 2.5~7.5 weight%, aromatic amine resin 0.5~2.5 weight%, butyl cellosolve 2.5~6.5 weight%, and water 2.5~7.5 weight%.