Afff Foam

Fire fighting foams

AFFF: http://en.wikipedia.org/wiki/Fire_retard ...

"In the mid-1960s the U.S. Navy developed an aqueous film forming foam (AFFF). This foam has a low viscosity and spreads quickly across the surface of most hydrocarbon fuels. It forms a film water under the foam that cools the liquid fuel, which stops the formation of flammable vapors. This offer dramatic fire knockdown, an important factor in the fight against fire crash rescue. "

"Aqueous Film Forming Foam (AFFF) water-based, often containing sodium sulfate alkyl, perfluoro telomer and / or surfactants. They have the ability to spread over the surface of liquid hydrocarbon-based "

"Low-expansion foam as AFFF are low viscosity, mobile and capable of covering large areas quickly."

"... Low-expansion foams are used on spills of combustion. AFFF is preferable for spills of aviation fuel,
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FFFP: forming fluoroprotein

"Foams proteins contain natural proteins as foaming agents. Unlike other synthetic foam, foams are bio-degradable protein. They flow and slower diffusion, but to provide a blanket of foam that is more resistant heat and longer lasting. "

"FFFP is better for cases where the fuel can form more pools ..."

"AR-AFFF should be used in areas where species are mixed with oxygen from alcohols prevent the formation of the film between the foam FFFP and essence, break the foam, making foam FFFP virtually useless.
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