AFFF, Fire extinguisher, what does it stand for? - afff extinguisher
The formation of AFFF - Aqueous film.
In the 1960s, the U.S. Navy has a call for AFFF fire, short of aqueous film forming foam are developed.
This foam is of low viscosity, the rapid spread over the surface of most hydrocarbons.
It forms a film of water into the bubbles of foam that cools the fuel and prevent the formation of flammable vapors and a dramatic reduction in the fire, an important factor in the rescue of accident or fire.
The aqueous film foam (AFFF) are foams often contain water, sodium alkyl sulfate and / or telomeres as perfluorinated surfactants.
You have the ability to spread over the surface of the liquid hydrocarbons.
Alcohol-resistant aqueous film forming foam (AFFF-AR) foams are resistant to the action of the alcohols may have a protective film, including his presence.
AFFF is better for the release of aviation fuel.
Low expansion foams are foams with the expansion of less than 20 times accessed. < br> Foams with expansion ratio between 20-200 are medium-term expansion.
Low expansion foams, for example. AFFF are low viscosity, mobile, can quickly give large coverage areas.
Sunday, January 31, 2010
Afff Extinguisher AFFF, Fire Extinguisher, What Does It Stand For?
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