Cold-resistant alcohol-resistant aqueous film-forming foam fire extinguishing agent

Abstract

The invention relates to a cold-resistant alcohol-resistant aqueous film-forming foam fire extinguishing agent, which comprises, by mass, 4-10% of a fluorine surfactant, 15-20% of a polyol type surfactant, 3-6% of a foam stabilizer, 2-5% of a solubilizer, 2-4% of an anti-burning agent, 20-30% of an anti-freezing agent, and the balance of water, wherein the fluorine surfactant is an anionic geminifluorine surfactant having a fluorocarbon chain length of 4 carbons. According to the present invention, the cold-resistant alcohol-resistant aqueous film-forming foam fire extinguishing agent is mainly used for preventing and extinguishing alcohol-based solvent fire disasters, can be normally used at an ambient temperature of about -48 DEG C, is especially suitable for storage and use in particularly cold regions, does not contain PFOA / PFOS, has good degradation performance, can be rapidly and safely degraded, and cannot cause environment pollution.

Description

technical field [0001] The invention relates to a cold-resistant and solvent-resistant aqueous film-forming foam fire extinguishing agent produced by using an anionic twinned fluorocarbon surfactant with a fluorocarbon chain length of 4 carbons. Background technique [0002] Aqueous film-forming foam fire extinguishing agent (AFFF for short) consists of fluorosurfactants, hydrocarbon surfactants, foam stabilizers, thickeners, anti-burning agents, co-solvents, buffers, Composed of freezing agent, metal corrosion inhibitor, antibacterial agent and chelating agent, it is a high-efficiency foam fire extinguishing agent. AFFF can spontaneously form a layer of water film on the surface of oil to inhibit oil evaporation, reduce the flame temperature, cut off fuel delivery, isolate fuel and air at the same time, and realize rapid fire extinguishment by comprehensively utilizing cooling, isolation and suffocation mechanisms. AFFF has the advantages of high fire extinguishing efficie...

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Problems solved by technology

[0005] Short fluorocarbon chain twinned fluorosurfactant can effectively improve surface activity, and CN107497091A prepares an aqueous film-forming foam fire extinguishing agent with an anionic twinned fluorosurfactant whose fluorocarbon chain length is 4 carbons, but it is effective in extinguishing alcohol When a fire is caused by the burning of similar substances, since AFFF can dissolve in such substances, the water film and foam structure formed by it will be destroyed, thereby weakening or even losing its fire extinguishing ability

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