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Fire retardant paint is a coating specially designed to reduce or delay the damage of fire to buildings and structures. Its main function is to prevent the substrate from quickly losing its load-bearing capacity or structural integrity when encountering a fire by means of insulation, expansion or absorption of heat.

The main function of fire retardant paint is to delay the impact of fire on steel and ensure that the steel structure maintains its bearing capacity and structural stability for a long enough time in a high temperature environment. Fire retardant paint can form a heat-insulating protective layer through physical and chemical reactions, reducing the heat conduction and temperature rise rate on the surface of the steel.