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Brief introduction
Foam fire extinguishing agent is fighting Flammable and Combustible liquid extinguishing agent, it is mainly generated in the surface of the liquid foam floating layer cohesion, a stifling and cooling effect. Foam fire extinguishing agent is divided into chemical foam, air bubble, fluoro-protein foam, AFFF alcohol-resistant foam. Wide range of applications.
Composition
Foam fire extinguishing agent is generally foaming agents, foam stabilizers, viscosity reducer, antifreeze, solvent, preservatives and water. Mainly used for non-water-soluble flammable liquid and solid fire fighting. Special foam fire extinguishing agent can also put out water-soluble flammable liquid fires.
Classification
Foam fire extinguishing agent can be divided into chemical foam fire extinguishing agent and air foam fire extinguishing agent. Chemical foam is an aqueous solution of aluminum sulphate and sodium carbonate to react chemically to produce carbon dioxide gas is contained in the foam. The air bubble is carried out in aqueous air foam fire extinguishing agent and the air in the foam generator, the generated mechanical mixing, also known as mechanical air bubble foam, the foam contained in the gas is air. A wide range of air foam fire extinguishing agent, foam expansion ratio, can be divided into low expansion foam expansion foam and high-expansion foam three categories. The expansion ratio of the low-expansion foam fire extinguishing agent is generally less than 20 times, high-expansion foam extinguishing agent multiples 20-1000 times.
According to the type and purpose of the blowing agent, the low multiples air foam fire extinguishing agent is divided into protein foam, fluoro-protein foam, AFFF synthetic foam, anti-insoluble foam type. , The high-expansion foam extinguishing agent is a type of synthetic foam