Using phenylethylene-acrylic ester emulsion as the binder, and tetramethylolmethane, trimeric cyanamide, ammonium biphosphate and titanic oxide as fire protection additive and assistant, aqueous ostentatious one pack fire retardant coat-ings of steel structure with thin coating is prepared. 以苯丙乳液为基料,以季成四醇、三聚氰胺、磷酸二氢铵、二氧化钛等为防火添加剂及其它助剂,研制成薄型单组分钢结构饰面型水性防火涂料。