Classification method of fire retardant coatings
2025-08-15
Fireproofing coatings can be classified as follows:
1. Classification by fire prevention mechanism
Intumescent fire retardant coating:
When exposed to fire, it expands to form a porous carbon layer (an expansion factor of up to 50 times) to isolate heat and oxygen.
Application: Steel structures, wood structures (such as thin steel structure fire retardant coatings).
Ingredients: Contains dehydration catalyst (such as ammonium polyphosphate), carbon forming agent (pentaerythritol), blowing agent (melamine).
Non-intumescent fire retardant coating:
The thermal insulation layer is formed by high-melting inorganic materials (such as aluminum hydroxide, borate).
Application: Concrete structures, fire-resistant cables (such as thick steel structure fire-resistant coatings).
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