Perfluorohexanone emulsion fire extinguishing agent of composite flame retardant and preparation method of perfluorohexanone emulsion fire extinguishing agent

Abstract

The invention discloses a high-efficiency perfluorohexanone solid-liquid two-phase composite fire extinguishing agent which is characterized by comprising an oil-based liquid fire extinguishing agent formed by perfluorohexanone, a nonionic phosphorus-containing flame retardant, halogenated flame retardants such as brominated flame retardants and a halogenated phosphate ester mixed flame retardant, and inorganic and organic salt solid flame retardants or solid flame retardant synergists. The perfluorohexanone fire extinguishing agent makes response when the lithium ion battery is subjected to thermal runaway, adopts an immersed mode, has the characteristics of suffocation, chemical inhibition and the like, and can quickly extinguish open fire and reduce the smoke concentration; the mixed flame retardant can quickly react with free radicals. H and. OH decomposed after the battery is heated or burnt by decomposing small molecules in flames while playing a fire extinguishing role, so that the progress of a combustion chain reaction is slowed down, and an inhibition role is played. The mixed solid inorganic or organic salt flame retardant directly covers the surface of the battery mainly in the form of bubbles or particles when playing a fire extinguishing role, so as to play roles of suffocation, isolation and cooling. The composite fire extinguishing agent is simple in preparation method, low in cost, good in environmental protection property and excellent in lithium ion battery fire suppression effect.

Description

technical field [0001] The invention belongs to the technical field of lithium-ion battery fire extinguishing, in particular to a perfluorohexanone emulsion fire extinguishing agent used as a composite flame retardant for silver powder as a raw material and a preparation method thereof. Background technique [0002] Lithium-ion batteries are widely used in consumer electronics, new energy vehicles, and energy storage power stations due to their high energy density, long cycle life, environmental friendliness, and low self-discharge. In the future, lithium-ion batteries will still maintain their status as a pillar industry in the new energy industry, especially the energy storage industry. In recent years, with the widespread application of lithium-ion batteries in electric vehicles, energy storage and other fields, related fires and explosions have occurred frequently. Especially in the field of energy storage, more than 20 fires broke out in South Korea and Taiwan. This i...

AI Technical Summary

Problems solved by technology

There are many patent reports on perfluorohexanone fire extinguishing agent and reports on adding flame retardants during the preparation of lithium-ion batteries. However, compounding perfluorohexanone and battery flame retardants to prepare a solid-liquid two-phase composite agent will The method of controlling the fire of lithium-ion batteries combined with chemical and physical methods has not been reported yet

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