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A kind of aqueous film-forming foam fire extinguishing agent and preparation method thereof

A foam fire extinguishing agent and aqueous film-forming technology, which can be used in fire prevention equipment, chemical instruments and methods, mixers, etc., can solve the problems of poor degradation performance of fluorocarbon surfactants, failure to achieve mixing effects, and large environmental pollution. Achieve the effect of speeding up the turning and stirring speed, improving the quality and reducing pollution

Active Publication Date: 2022-04-01
京开消防科技(浙江)有限公司
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AI Technical Summary

Problems solved by technology

[0005] The fluorocarbon surfactant used in the existing aqueous film-forming foam fire extinguishing agent has extremely strong persistence, which can ensure the high stability of the fire extinguishing agent in many environments; but the degradation of this fluorocarbon surfactant The performance is extremely poor, and it is an organic pollutant that is relatively difficult to decompose, and it has great pollution to the environment. When the aqueous film-forming foam fire extinguishing agent is prepared, the existing preparation method has low stirring efficiency in the process of mixing and stirring materials. The expected mixing effect is often not achieved

Method used

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  • A kind of aqueous film-forming foam fire extinguishing agent and preparation method thereof
  • A kind of aqueous film-forming foam fire extinguishing agent and preparation method thereof
  • A kind of aqueous film-forming foam fire extinguishing agent and preparation method thereof

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Embodiment 1

[0035] A kind of aqueous film-forming foam fire extinguishing agent, its composition comprises the combined hydrocarbon surfactant 8% of weight percentage, the hydrocarbon surfactant 12% that does not contain perfluorooctane sulfonyl compound, blowing agent 15%, protective colloid 0.5%, urea 25.5%, foam stabilizer 5%, antifreeze 5%, solubilizer 4%, flame retardant 3%, water 30%.

[0036] The preparation method of aqueous film-forming foam fire extinguishing agent of the present invention is characterized in that, comprises the steps:

[0037] S1. Pre-adding water: add half of the mass fraction of water to the reactor;

[0038] S2. Adding material 1: Weigh and add foaming agent, combined hydrocarbon surfactant, protective colloid and hydrocarbon surfactant not containing perfluorooctanesulfonyl compound to the reaction kettle, and carry out stir;

[0039] S3. Adding material 2: After all the components in step S2 are dissolved, weigh and add urea, foam stabilizer and antifree...

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Abstract

The invention relates to the technical field of fire extinguishing agent preparation, in particular to an aqueous film-forming foam fire extinguishing agent and a preparation method thereof, which is characterized in that its composition includes a combined hydrocarbon surfactant of 5-15% by weight and does not contain perfluorooctine Hydrocarbon surfactant of alkanesulfonyl compound 5‑20%, blowing agent 15‑25%, protective colloid 0.3‑0.9%, urea 5‑70%, foam stabilizer 5‑8%, antifreeze agent 5‑15 %, 3‑5% solubilizer, 3‑10% flame retardant, 20‑40% water, using PFOS-free fluorocarbon surfactant, the fire extinguishing agent can be degraded by itself within a certain period of time, so it has higher environmental protection It is non-toxic, significantly reduces environmental pollution and has excellent performance. The product obtained by the preparation method is uniformly mixed, the ratio of raw materials is high, and the mixing and stirring will not cause aggregation and agglomeration.

Description

technical field [0001] The invention relates to the technical field of fire extinguishing agent preparation, in particular to an aqueous film-forming foam fire extinguishing agent and a preparation method thereof. Background technique [0002] Aqueous film-forming foam fire extinguishing agent, also known as "light water" foam fire extinguishing agent, has the best fire extinguishing effect due to its double fire extinguishing effect of water film-forming and foam. And because most of the water in the aqueous film-forming foam fire extinguishing agent is water, it is an ideal substitute for halon fire extinguishing agent in the international "halon phase-out action", and has become a fire extinguishing agent that has been developed internationally. [0003] Aqueous film-forming foam fire extinguishing agent (AFFF for short) is a foam fire extinguishing agent that is based on hydrocarbon surfactants and fluorocarbon surfactants and can form a layer of water film on the surfac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D1/00A62D1/02B01F33/83B01F35/221B01F35/71B01F35/80B01F21/10B01F27/96
CPCA62D1/0042A62D1/0071A62D1/0064
Inventor 吴林军吴书森姜勇华姜玉爱
Owner 京开消防科技(浙江)有限公司
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