Fire Retardant Coating's Flame Retardant Mechanism

1. Fire Retardant Coating: Possesses inherent flame resistance or non-flammability, preventing the protected combustible material from coming into direct contact with air, thereby delaying the ignition time of the material.

2. Fire-resistant coatings decompose into non-flammable inert gases when exposed to fire and heat, which dilute the flammable gases released from combustible materials and the oxygen in the air, thereby suppressing combustion.

3. Chain reactions that prevent ignition, such as the combustion reactions of decomposing gases, are free radical reactions. Fire-retardant coatings containing nitrogen, phosphorus, bromine, and the like decompose to release some active radicals; these radicals combine with combustible free radicals to interrupt the chain reaction, thereby reducing the combustion rate.

4. Fire-resistant coatings expand and foam upon exposure to fire, creating a layer of foam insulation that seals the protected substrate and prevents the base material from catching fire. Additionally, some fire-resistant coatings decompose upon exposure to fire, producing a strong heat-absorbing reaction that inhibits temperature rise and delays the spread of the fire.