Fire-fighting foam liquid (water film-forming foam fire extinguishing agent) is also called light water foam fire extinguishing agent. It is composed of fluorocarbon surfactants, fluorine-free surfactants (carbon-chlorine surfactants or silicone surfactants) and additives to improve foam performance (foam stabilizers, antifreeze agents, co-solvents and thickeners, etc.) and water composition. Fire-fighting foam liquid manufacturers are divided into 3% AFFF (3:97) and 6% AFFF (6:94) according to the volume mixing ratio with water, and the shelf life is eight years.
The fire extinguishing mechanism of fire-fighting foam liquid is mainly cooling and suffocation, that is, a continuous foam layer is formed on the surface of the burning material on fire, the surface of the burning material is cooled by the foam itself and the precipitated mixture, and the foam layer is covered The role of combustion is to isolate the oxygen and extinguish the fire.
The fire extinguishing mechanism of fire-fighting foam liquid is mainly cooling and suffocation, that is, a continuous foam layer is formed on the surface of the burning material on fire, the surface of the burning material is cooled by the foam itself and the precipitated mixture, and the foam layer is covered The role of combustion is to isolate the oxygen and extinguish the fire.
Fire-fighting foam liquid manufacturer's aqueous film-forming foam extinguishing agent has the advantages of good sealing performance, fast fluidity and high-strength anti-flame back-burning. It is a Class B fire control and fire extinguishing agent. In fighting Class A fires, aqueous film-forming foam extinguishing agents are also wetting and penetrating agents. It can quickly extinguish the deep flames in wood piles, paper, rubber and usually combustibles. It is widely used in oil fields, refineries, oil depots, ships, docks, airports, hangars, etc.
Aqueous film-forming foam fire extinguishing agent is low energy consumption and only needs a small stirring energy. The foam produced has fluidity and can quickly overwhelm the flame to extinguish oil fires. The mixture of aqueous film-forming foam fire extinguishing agent, clean water and fresh water is suitable for fire extinguishing, and is compatible with most proportional mixing devices (foam tanks) and foam fire extinguishing devices. Aqueous film-forming foam fire extinguishing agents can be used in combination with compatible dry powder fire extinguishing agents.