The Fire and Thermal Insulation Principle of Expanded Steel Structure Fireproof Coating

The personal principle of fire prevention of ultra-thin or thin steel structure fire retardant coating coated on steel members is that the coating of fire retardant coating expands and foams when exposed to fire to form foam. The foam layer not only insulates oxygen, but also has good heat insulation performance because of its loose texture, which can delay the rate of heat transfer to the protected substrate. According to the analysis of physical and chemical principles, the process of foam layer generated by coating expansion and foaming presents an endothermic reaction due to the expansion of volume, also consumes the heat during combustion, which is conducive to reducing the temperature of the system. The effects of these aspects make the fire retardant coating produce significant fire and heat insulation effects.