钢结构防火涂料的分类发布时间：2015-8-28 10:06:14 浏览次数:937
Thick steel structure fire retardant coating thickness (H) for 7 ~ 45 mm, they present granular surface, density is small, no foaming coating is heated, relying on its low thermal conductivity to delay the temperature rise of the steel structure, fire protection, fire resistance limit of 0.5 ~ 3.0 H, often refer to this kind of coating for steel structure fire insulation coating. The performance characteristics of two kinds of coatings with different, suitable for different occasions. All steel structure fire retardant coatings is divided into indoor and outdoor use two kinds of types.
According to the steel structure fire retardant coatings GB14907-2002 general technical conditions ", the classification of steel structure fire retardant coating according to the coating thickness and performance characteristics can be divided into: ultra thin, thin coating type and heavy type three categories. Ultra-thin steel structure fire retardant coating (CB), the coating thickness is not more than 3 mm, thin coating of steel structure fire retardant coating (B class) of coating thickness is 3 ~ 7 mm, these two kinds of coating during a fire can heat expansion foam, the formation of foamy coking heat insulation layer, so as to prevent heat transfer to the steel structure, slow temperature rise of the steel structure, fire protection effect. Often refer to these two kinds of coating expansion type fire retardant coatings for steel structure.