Fire retardant coatings include two types: intumescent and non-intumescent.

Intumescent coatings are a passive fire protection measure that expands when heated (such as in a fire) to protect the underlying material (steel, gypsum board or wood) from fire.

The fireproof and heat-insulating principle of intumescent steel structure fire retardant coatings applied to steel structures is that the fire retardant coating layer expands and foams when exposed to fire to form foam. The foam layer not only isolates oxygen, but also has good heat insulation properties due to its loose texture, which can delay the speed of heat transfer to the protected substrate. The process of the foam layer produced by the expansion and foaming of the coating presents an endothermic reaction due to the expansion of volume, and also consumes the heat during combustion, which is conducive to reducing the temperature of the system. These aspects of the effect make the fire retardant coating produce a significant fireproof and heat-insulating effect.

The production equipment of intumescent fire retardant coating includes the following equipment:

1. Feeding system

2. Dispersion and mixing system

3. Filling and capping system

The equipment composition is relatively simple. Depending on the processing volume, the main dispersing equipment can choose ordinary dispersers, single-axis dispersing tanks, double-axis dispersing tanks or even three-axis dispersing tanks.