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

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 combus