What kinds of fire retardant coatings are there in steel structures?
The utility model can be expanded and expanded slowly when the fire is in place to form a dense and hard fireproof heat-insulating layer, and the fireproof layer has strong fireproof impact property, and the temperature rise of the steel is delayed, and the steel member is effectively protected. Ultra thin intumescent steel structure fire retardant coating can be sprayed, brushed or rolled. It is generally used in building steel structures with a fire resistance requirement of less than 2 h. There have been fire resistance to meet or exceed the new ultra-thin fireproof coating for steel structure of 2 varieties of H, it is mainly based on the special structure of the poly methyl acrylate or epoxy resin and amino resin, chlorinated paraffin, compound as base adhesive, with high degree of polymerization of ammonium polyphosphate, double itrate alcohol, melamine as four fire retardant system, adding titanium dioxide, wollastonite and other inorganic refractory material, using 200# as solvent and solvent oil compound. All kinds of light steel structure, grid and so on, use this type of fire retardant coatings for fire protection.
Ultra thin steel structure fire retardant coating refers to the coating thickness of 3 mm (including 3 mm) within, decorative effect is better, when high temperature can expand foaming, fire-resistant limit is generally less than 2 H steel structure fire retardant coating. This kind of fireproof coating for steel structure is a solvent based system with excellent adhesive strength, good weather resistance, good water resistance, good leveling and good decoration;
Because this type of ultra-thin fireproof paint coating, making use of thick and thin fire retardant coating for steel structure is greatly reduced, thereby reducing the total cost of the project, the steel structure has been effective fire protection, fire effect is very good.
