1714results about "Fire extinguisher" patented technology

A wildfire defense spraying system installed on a property with combustible surfaces and adapted for spraying the property and combustible surfaces with an environmentally-clean water-based liquid fire inhibitor for defending against wildfire by inhibiting fire ignition and flame spread caused by hot flying wildfire embers created during a wildfire storm. The wildfire defense system includes: a storage tank containing an environmentally-clean liquid fire inhibitor comprising a majority amount of tripotassium citrate (TPC) and minor amount of triethyl citrate (TEC) dissolved in a major amount of water according to a prespecified formulation, wherein the environmentally-clean water-based liquid fire inhibitor remains stable without the formation of solids at expected operating temperatures, and ready for immediate spraying on combustible surfaces. A hydraulic pump system is connected to remote power control switch employed to supply electrical power to the hydraulic pump, and remotely activated. A plurality of spray heads is mounted about the property, in fluid communication with the storage tank, and supplied with environmentally-clean water-based liquid fire inhibitor by the hydraulic pump system. During operation, the spray heads spray liquid fire inhibitor from the storage tank forming a spray pattern that covers the property and combustible surfaces to be defended against wildfire embers. When the hydraulic pump system completes pumping and spraying the environmentally-clean water-based liquid fire inhibitor in the storage tank, the hydraulic pump system automatically shuts off, and as water molecules in the sprayed environmentally-clean water-based liquid fire inhibitor evaporate to the environment, thin potassium salt crystalline coatings form on the sprayed combustible property surfaces, inhibiting fire ignition and flame spread in the presence of wildfire.

A forest fire retardant composition contains a retardant compound that includes a phosphate salt. The phosphate salt may include diammonium phosphate, diammonium orthophosphate, monoammonium phosphate, monoammonium orthophosphate, monosodium phosphate, disodium phosphate, disodium phosphate hydrate, sodium ammonium phosphate, sodium ammonium phosphate hydrate, sodium tripolyphosphate, trisodium phosphate, or dipotassium phosphate, and combinations thereof. The forest fire retardant composition may include an ammonium source. The composition may be in the form of a dry concentrate, a liquid concentrate, or a final diluted product. The final diluted product is effective in suppressing, retarding, and controlling forest fires while exhibiting corrosion resistance and low toxicity.

A wildfire defense spraying process for spraying and protecting property and combustible surfaces with an environmentally-clean water-based liquid fire inhibitor that inhibits fire ignition and flame spread caused by hot flying wildfire embers created during a wildfire storm. The wildfire defense spraying process involves maintaining a storage tank containing a supply of environmentally-clean water-based liquid fire inhibitor comprising a major amount of tripotassium citrate (TPC) and minor amount of triethyl citrate (TEC) dissolved in a major amount of water according to a prespecified formulation, wherein the environmentally-clean water-based liquid fire inhibitor remains stable without the formation of solids at expected operating temperatures, and ready for immediate spraying on combustible property. When a spraying-trigger signal is received by an automated wildfire detection system, a mobile phone or other intelligent source, an electric-powered hydraulic pump system is automatically energized and pumps environmentally-clean water-based liquid fire inhibitor from the storage tank through piping, under pressure, to spray heads mounted about the property, to produce a spray pattern of environmentally-clean water-based liquid fire inhibitor that covers all the property and combustible surfaces to be defended against wildfire. When the hydraulic pump system completes its pumping operations, the hydraulic pump system automatically shuts off. As water molecules in the sprayed environmentally-clean water-based liquid fire inhibitor evaporates to the environment, thin fire-inhibiting potassium salt crystalline coatings form on the sprayed combustible surfaces, inhibiting fire ignition and flame spread in the presence of wildfire embers.

A fire retarding biochemical liquid composition including: a dispersing agent realized in the form of a major amount of water, for dispersing alkali metal ions dissolved in the water; a major amount of a first fire retarding agent realized in the form of a first alkali metal salt of a nonpolymeric saturated carboxylic acid, specifically, tripotassium citrate, for providing metal potassium ions dispersed in the water when the at least one alkali metal salt is dissolved in the water to form a mixed retardant solution; a minor amount of a second fire retarding agent realized in the form of a second alkali metal salt of a nonpolymeric saturated carboxylic acid, specifically, sodium benzoate (SB), for providing metal sodium ions dispersed in the water when the at least one alkali metal salt is dissolved in the mixed retardant solution, for functioning as a secondary fire retardant agent and also inhibiting surface corrosion reactions involving metals contacting the mixed retardant solution, including specific metals, namely 2024-T3 Aluminum, 4130 Steel, Yellow Brass, and Az31B Magnesium; a minor amount of thickening agent in the form of a biomolecular polymer consisting of polysaccharides, for increasing the viscosity of the mixed retardant liquid during application operations; a minor amount of coloring agent in the form of fugitive color dye powder, or non-fugitive pigment powder, for imparting a visible color (e.g. red or green) when the fire retarding biochemical liquid composition is applied to a surface to be protected against fire, as water molecules in the retardant liquid coating evaporate to the environment during drying, to form a thin fire retardant coating deposited on the treated surfaces having a characteristic visible color, and comprising potassium and sodium salt crystals mixed within the polysaccharides of the biomolecular polymer. Wet and dry concentration formulations of the fire retarding biochemical liquid composition are disclosed for use with both serial and ground delivery methods and apparatus.

A forest fire retardant composition contains a retardant compound that includes a phosphate salt. The phosphate salt may include diammonium phosphate, diammonium orthophosphate, monoammonium phosphate, monoammonium orthophosphate, monosodium phosphate, disodium phosphate, disodium phosphate hydrate, sodium ammonium phosphate, sodium ammonium phosphate hydrate, sodium tripolyphosphate, trisodium phosphate, or dipotassium phosphate, and combinations thereof. The forest fire retardant composition may include an ammonium source. The composition may be in the form of a dry concentrate, a liquid concentrate, or a final diluted product. The final diluted product is effective in suppressing, retarding, and controlling forest fires while exhibiting corrosion resistance and low toxicity.

A forest fire retardant composition contains a retardant compound that includes a potassium salt. The potassium salt may include a potassium salt of an organic acid, a potassium salt of an inorganic acid, or mixtures thereof. The organic acid may include formic acid, acetic acid, propanoic acid, butanoic acid, lactic acid, oxalic acid, malic acid, gluconic acid, tartaric acid, uric acid, malic acid, or citric acid. The inorganic acid may include sulfuric acid, phosphoric acid, carbonic acid, or hydrochloric acid. The composition may be in the form of a dry concentrate, a liquid concentrate, or a final diluted product. The final diluted product is effective in suppressing, retarding, and controlling forest fires while exhibiting corrosion resistance and low toxicity.

A long-term fire retarding biochemical liquid composition including: a dispersing agent realized in the form of a major amount of water, for dispersing alkali metal ions dissolved in the water; a major amount of a first fire retarding agent realized in the form of a primary alkali metal salt of a nonpolymeric saturated carboxylic acid, for example, tripotassium citrate, for providing metal potassium ions dispersed in the water when the at least one alkali metal salt is dissolved in the water to form a mixed retardant solution; a minor amount of a second fire retarding agent realized in the form of a secondary alkali metal salt of a nonpolymeric saturated carboxylic acid, for example, potassium, sodium, calcium and / or magnesium benzoate, for providing benzoate ions dispersed in the water when the secondary alkali metal salt is dissolved in the mixed retardant solution, for functioning as a secondary fire retardant agent.

The invention relates to a novel thermosensitive self-crosslinking hydrogel fire extinguishing agent and a preparation method thereof, belongs to the technical field of fire extinguishing agents, and solves the problems that in the prior art, a traditional water-based fire extinguishing agent is poor in surface adhesive force on combustible materials and low in fire extinguishing efficiency; and the gel type fire extinguishing agent is high in viscosity and difficult to convey and spray. The invention provides a novel thermosensitive self-crosslinking hydrogel fire extinguishing agent. The fire extinguishing agent is prepared from the following components in percentage by mass: 0.5 to 1.5 percent of modified carboxymethyl cellulose (E-CMC), 4 to 8 percent of polyethylene glycol (PEG), 5 to 30 percent of water-soluble flame retardant and pure water serving as a solvent. The fire extinguishing agent is good in fluidity at normal temperature, the viscosity is remarkably improved at 90 DEG C, the fire extinguishing agent can be attached to the surface of combustible materials easily, the fire extinguishing effect is good, and reburning is not prone to occurring; wherein the viscosity of the fire extinguishing agent corresponding to 1.0 wt% of E-CMC and 6wt% of PEG at normal temperature is less than 1600cp, the viscosity at 90 DEG C is more than 42000cp, and the fire extinguishing agent is suitable for fire extinguishing work of class-A fire disasters.

The invention discloses an aerogel fire extinguishing agent for fire fighting, a fire extinguishing device and a releasing method.The aerogel fire extinguishing agent for fire fighting is prepared from, by mass, 8-12 parts of silicon dioxide aerogel powder, 40-45 parts of perfluorohexanone, 1.5-2 parts of zinc molybdate, 0.8-1.2 parts of nano cerium oxide, 2-3 parts of hyperbranched polysiloxane and 0.2-0.3 part of 18-crown-6 ether. Solid-phase silicon dioxide aerogel powder is matched with liquid-phase perfluorohexanone, zinc molybdate, nano cerium oxide, hyperbranched polysiloxane, 18-crown-6 ether and the like are compounded to serve as auxiliaries, efficient fire extinguishing can be conducted on precise electrical elements, residues are few, loss of instruments and equipment is small, and the fire extinguishing agent is suitable for being applied to the electrical field.

To provide a perfluoropolyether compound expressing excellent surface tension reduction performance, and expressing excellent foamability and foam stability not only during diluting fresh water but also during diluting sea water, and a fluorine-based surface active agent including the compound.SOLUTION: A perfluoropolyether dicarboxylic acid compound or a salt thereof is expressed by the following formula (1). In the formula, Rf1 represents a 1-4C perfluoroalkyl group. R1 represents a substituted or unsubstituted 1-10C hydrocarbon group. R2 represents a substituted or unsubstituted 1-6C hydrocarbon group. R3 and R4 are same or different and each represent a substituted or unsubstituted 1-4C hydrocarbon group. n is an integer of 0-5.SELECTED DRAWING: None

The present invention discloses a perfluoromethylcyclohexanone microcapsule fire extinguishing medium and its preparation process, which relates to the field of fire fighting technology. A perfluoromethylcyclohexanone microcapsule fire extinguishing medium is composed of a core material and a shell material. The core material includes perfluoromethylcyclohexanone, silicon dioxide, and azobisisobutyronitrile. The shell material includes modified guar gum, acrylic resin, aluminum hydroxide, potassium nitrate, and an emulsifier. The modified guar gum is prepared by the following method: tetrahydrofuran, guar gum, and triethylamine are sequentially added into a reactor, stirred and mixed evenly, and then a tetrahydrofuran solution of diphenylphosphinyl chloride is added dropwise. After the addition is completed, the temperature is raised to 75-85°C and the reaction is carried out for 10-14 hours, followed by post-treatment to obtain diphenylphosphinyl chloride-modified guar gum. The present invention modifies guar gum with diphenylphosphinyl chloride and then uses the modified guar gum for the shell material of perfluoromethylcyclohexanone microcapsules, improving the fire extinguishing performance, heat resistance, and long-term stability of perfluoromethylcyclohexanone microcapsules.

The invention relates to the field of battery fire extinguishing agents, in particular to a hydrogel fire extinguishing agent for battery fire and a preparation method of the hydrogel fire extinguishing agent. The hydrogel fire extinguishing agent for the battery fire disasters has viscosity variability, the components of the fire extinguishing agent are screened and compounded, the thermal reversible gel and the thermal irreversible gel are added, and the slow carbon forming gel and the water-retaining agent glycerinum are further added; the hydrogel fire extinguishing agent is in a flowing state with high viscosity and high flowability at normal temperature, and the inactivator is quickly converted into a gel state with high adhesion and non-flowability when encountering high temperature, so that the use of the hydrogel fire extinguishing agent is facilitated; and the hydrogel fire extinguishing agent can be ensured to cover the battery in fire for a long time to prevent the battery from reburning.

The invention discloses forest steppe fire extinguishing barrier foam and a preparation method thereof.The foam is prepared from 5%-20% of a material A, 0.5%-0.8% of a material B, 1.8%-3% of a coagulant and the balance water through a foam generation system; the material A is prepared from 1 to 10 parts of organic aggregate and 100 to 200 parts of inorganic aggregate; the material B is composed of 2-7 parts of a composite surfactant and 1-6 parts of a cross-linking agent; the coagulant is carbon dioxide gas. The inorganic aggregate is condensed under the action of hydrogen ions generated by dissolution of carbon dioxide to form colloidal particles, the colloidal particles are polymerized and crosslinked with the organic aggregate to form a gel skeleton of a three-dimensional network structure, the foam is converted into gel foam, and a heat-insulating and anti-burning barrier layer is formed on the surface of a combustible. The fire extinguishing agent is high in fire extinguishing efficiency, good in heat insulation effect and environment-friendly, and has wide application prospects in forest and grassland fire disasters.

The invention provides an efficient environment-friendly silicon-based foam extinguishing agent synergistically compounded by a multi-silicon surfactant and a preparation method of the efficient environment-friendly silicon-based foam extinguishing agent. The cleaning agent is prepared from raw materials in percentage by mass as follows: 5%-35% of an ionic silicon surfactant, 5%-35% of a nonionic silicon surfactant, 0.1%-3% of a polysaccharide foam stabilizer, 1%-10% of a cosolvent, 0.1%-10% of a preservative, 1%-10% of an antifreeze agent, 0.1%-5% of a regulator and the balance of deionized water. According to the invention, the ionic silicon surfactant and the nonionic silicon surfactant are compounded for use, hydrophobic and oleophobic tetrasiloxane groups and trisiloxane groups are used as spreading agents of an oil-water interface, and the formula of the foam extinguishing agent only contains the silicon surfactant; the liquid fuel fire extinguishing agent does not contain a forbidden fluorocarbon surfactant and a hydrocarbon surfactant with an oleophylic end, so that the environmental hazard of the fluorocarbon surfactant is completely eradicated, the oleophylic property of the foam fire extinguishing agent is eliminated, and the liquid fuel fire can be extinguished. The invention has positive significance on environment protection, human health protection and sustainable development of foam fire extinguishing technology.

The invention discloses a temperature-responsive microcapsule fire extinguishing material as well as a preparation method and application thereof. The temperature-responsive microcapsule fire extinguishing material comprises a core structure and a shell structure, wherein the shell structure coats the core structure; the core structure comprises a fluorine-containing fire extinguishing agent; the shell structure comprises a high polymer material, a nano compound, a surfactant and a curing agent. According to the perfluorohexanone microcapsule fire extinguishing material, intelligent response release is achieved, the explosion temperature range can be precisely regulated and controlled to be 90-130 DEG C according to the applicable scene, it is ensured that the fire extinguishing agent is released at the critical moment, and the problem of too early or too late release is avoided.

The invention belongs to the field of novel fire extinguishing agents, and particularly relates to a preparation method of a temperature response type hydrogel fire extinguishing agent, which comprises the following steps: dissolving and uniformly mixing a temperature-sensitive agent, a flame retardant, a gelling agent and a cross-linking agent in water, and then adding an initiator to obtain a fire extinguishing aqueous solution; during fire extinguishing, an ignition point is heated to trigger the fire extinguishing water aqua to be gelatinized to cover the surface of a fire source, so that the effects of quickly cooling and isolating oxygen are achieved, and the fire extinguishing purpose is achieved. According to the hydrogel fire extinguishing agent, the gelation time can be adjusted by adjusting the concentration and temperature change of the flame retardant, the hydrogel fire extinguishing agent has very high flowability in a normal temperature state, resistance in a pipeline is reduced, the problem of pipeline blockage is further solved, and the hydrogel fire extinguishing agent has the advantages of being easy to prepare, convenient to use, high in fire extinguishing efficiency, resistant to after-combustion, low in smoke production rate, easy to clean after disasters and the like.

The invention relates to the technical field of fire prevention, in particular to a multi-core fire extinguishing microcapsule and a preparation method thereof. The multi-core fire extinguishing microcapsule provided by the invention comprises a microcapsule A, a shell material of the microcapsule A is melamine resin A, and a core material of the microcapsule A is a mixture of a microcapsule B and a fire extinguishing agent A; the shell material of the microcapsule B is melamine resin B, and the core material of the microcapsule B is a fire extinguishing agent B. The outer wall of the large-particle-size multi-core microcapsule is thin, a part of the fire extinguishing agent A is released at a relatively low temperature, the fire can be prevented from happening by timely cooling when the temperature rises and a fire risk occurs, and the inner small-particle-size microcapsule B can be broken and released at a relatively high temperature, so that the subsequent fire extinguishing performance failure caused by releasing a large amount of the fire extinguishing agent at one time at a certain temperature is avoided; and the fire extinguishing cycle use frequency is increased, and the requirements of more fire extinguishing scenes can be met.

The invention relates to a bio-based degradable UV-curable coating material for a microcapsule fire extinguishing agent, the microcapsule fire extinguishing agent and a preparation method and application of the bio-based degradable UV-curable coating material for the microcapsule fire extinguishing agent. The bio-based degradable UV-curable coating material for the microcapsule fire extinguishing agent is prepared from the following components in parts by weight: 100 parts of bio-based hyperbranched polyurethane / acrylate prepolymer; 10-150 parts of a reactive flame-retardant monomer, 0.1-5 parts of a photoinitiator and 0-70 parts of a solvent. The coating material for the microcapsule fire extinguishing agent is a thermal response type material, when the coating material is prepared into a shell layer of the microcapsule fire extinguishing agent and the environment temperature reaches a preset threshold value, the shell layer is rapidly broken due to thermal expansion coefficient difference and chemical bond fracture, internal fire extinguishing liquid is released, the process can be completed within 3 seconds or less, rapid response in the initial stage of a fire disaster is ensured, and fire extinguishing efficiency is improved. The thermal response speed is high, the microcapsule fire extinguishing agent can be rapidly broken in the early stage of a fire, rapid release of fire extinguishing liquid is achieved in the early stage of the fire, efficient fire extinguishing is achieved, a fire source is controlled in time, and fire spreading is effectively prevented.

An experimental device for thermal-stability and re-ignition of fire foams under different heating conditions, comprises a rectangular mounting module, a radiation module, a convection module, a supply module, a foam injection module, a measurement module and an intelligent control module: (i) the rectangular mounting module is used to load the oil and foam; (ii) the radiation module simulates the effects of thermal radiation, whereas the convection module thermal convection by a fire plume; (iii) the supply module is used to supply water and oil; (iv) the foam injection module is used to generate and inject foam to the rectangular mounting module; and (v) the measurement module is used to monitor the internal temperature and heat flow parameters of the rectangular mounting module, and to record the foam layer failure time and the flame re-ignition process and finally (vi) the intelligent control module controls all other modules for any test condition.

The invention discloses a lithium ion battery compound fire extinguishing agent and a preparation method and application thereof, and belongs to the technical field of lithium ion battery fire extinguishing agents. The fire extinguishing agent comprises the following raw materials in parts by weight: 10-50 parts of perfluorohexanone, 20-80 parts of hexafluoropropylene tripolymer and 1-3 parts of preservative. The compound fire extinguishing agent has the beneficial effects of efficient fire extinguishing capacity, excellent cooling efficiency, good corrosion resistance, stability, wide applicability and the like, in the fire extinguishing process, the fluorocarbon organic solvent can rapidly evaporate and absorb a large amount of heat, the temperature of a fire source is remarkably reduced, and therefore fire spreading is further inhibited. And the cooling efficiency can be accurately controlled by regulating and controlling the ratio of different solvents, so that the fire extinguishing requirements of different occasions are met, and powerful support is provided for development and application of the fire extinguishing technology.

The invention relates to the technical field of lithium ion battery fire extinguishing agents, in particular to a lithium ion battery fire extinguishing agent and a preparation process. The preparation process comprises the following steps: S1, biomass pretreatment: mixing 40-50 parts of chitin powder with a 2wt% sodium hydroxide solution according to a mass volume ratio of 1: 10, stirring at 60 DEG C for 1-2 hours, and centrifuging and freeze-drying to obtain a chitin crude product; dispersing the chitin crude product in deionized water, and carrying out ultrasonic treatment to obtain a cellulose suspension with the solid content of 1%; s2, cellulose modification: adding 15-20 parts of povidone into the cellulose suspension, and mixing and stirring at 60 DEG C for 1 hour to obtain a modified cellulose suspension; s3, introducing nano silicon dioxide; s4, preparing modified gel; and S5, cross-linking and drying.

The invention discloses a perfluorohexanone fire extinguishing agent and a preparation method and application thereof.The perfluorohexanone fire extinguishing agent is prepared from, by mass, 60-70 parts of perfluorohexanone microcapsules, 10-20 parts of aluminum hydroxide, 6-10 parts of graphite, 5-10 parts of titanium dioxide, 4-8 parts of ultraviolet absorbent, 2-6 parts of ammonium polyphosphate, 3-6 parts of calcium oxide, 1-3 parts of fumed silica, 1-3 parts of nano-silica and 1-3 parts of trimethyl phosphate. According to the formula and process of the fire extinguishing agent, through triple technical innovation of shell layer modification, nano compounding and supercritical deposition, the breakthrough of efficient explosion suppression, long-acting anti-after-combustion, low toxicity and environment friendliness of the fire extinguishing agent is achieved, and the industrial popularization potential is achieved.

The invention relates to the technical field of explosion suppression, in particular to a composite powder explosion suppressant and a design method and a preparation method thereof. The composite powder explosion suppressant is prepared from the following components in parts by mass: 20 to 25 parts of aluminum oxide, 10 to 20 parts of magnesium oxide, 20 to 30 parts of silicon dioxide, 1 to 3 parts of cerium oxide, 10 to 15 parts of potassium bicarbonate, 10 to 15 parts of sodium bicarbonate, 3 to 8 parts of gas-phase hydrophobic white carbon black and 2 to 6 parts of talcum powder. The composite powder explosion suppressant disclosed by the invention is high in explosion suppression efficiency; the metal oxide component screened through quantum chemistry calculation has good explosion suppression performance, and all the components in the composite powder explosion suppressant have a synergistic effect, so that hydrogen explosion can be effectively inhibited.

The invention discloses a fire extinguishing agent for battery fire prevention and control and a preparation method thereof, and relates to the technical field of fire extinguishing materials. When the fire extinguishing agent for battery fire prevention and control is prepared, lanthanum nitrate hexahydrate reacts with 1, 3, 5-tribenzoic acid to prepare a lanthanum organic metal framework; loading ammonium dihydrogen phosphate onto a lanthanum organic metal framework by adopting a solventing-out crystallization technology to prepare composite flame-retardant particles; reacting cellulose with sodium hydroxide and sodium acrylate in sequence to obtain modified cellulose; mixing the modified cellulose with the composite flame-retardant particles and expanded graphite, and carrying out cross-linking by using N, N '-methylene bisacrylamide, so as to prepare temperature-sensitive hydrogel; and mixing the temperature-sensitive hydrogel with sodium carbonate and glacial acetic acid, drying, and grinding into particles to obtain the fire extinguishing agent for battery fire prevention and control. The fire extinguishing agent for battery fire prevention and control has excellent fire extinguishing performance.

The invention relates to the technical field of fire extinguishing agents, and discloses a thermosensitive lithium battery special fire extinguishing agent and a preparation method thereof.The thermosensitive lithium battery special fire extinguishing agent comprises, by weight, 1-5 parts of a surfactant, 10-25 parts of an aprotic solvent, 2-5 parts of a fire extinguishing agent, 2-5 parts of a microcapsule agent, 3-10 parts of a temperature reducing agent, 2-10 parts of a thermosensitive expanding agent, 1-8 parts of a thermosensitive thickening agent and 70-100 parts of deionized water. According to the special fire extinguishing agent provided by the invention, a thermosensitive expanding agent, a thermosensitive thickening agent and a microcapsule medicament are added into a water-based fire extinguishing agent. And when meeting high temperature of flame, the fire extinguishing agent generates thermal expansion and increases viscosity, so that the adhesive force of the water-based fire extinguishing agent on the surface of the lithium battery is enhanced.

The present invention provides a fire extinguishing sheet suitable for productivity, mass production, and large-scale production, wherein the fire extinguishing sheet can be used in places, facilities, structures, etc., where a fire may occur, and has an initial fire extinguishing function. The fire extinguishing sheet according to the present invention contains a fire extinguishing agent that when a predetermined temperature is reached, thermally decomposes to generate a fire extinguishing component.

The invention discloses a new energy battery topological insulator fire extinguishing system and a chain reaction suppression method, and the fire extinguishing system comprises a detection module arranged in a battery module; the composite tank is internally provided with a topological insulator composite material, and the topological insulator composite material is a Bi2Te3-coated PFPE compound; and the high-pressure directional release device is connected with the composite tank. According to the invention, the Bi2Te3-coated PFPE compound is injected into the battery module through the high-pressure directional release device, so that a thermal runaway chain reaction can be effectively blocked, secondary reburning is avoided, and the use safety of a new energy battery is greatly improved.

The invention belongs to the technical field of fire-extinguishing building materials, and discloses a microencapsulated efficient automatic fire-extinguishing patch and a preparation method thereof.The fire-extinguishing patch contains a fire-extinguishing microcapsule, the fire-extinguishing microcapsule is of a double-layer structure, the inner layer contains gelatin, kaolin, perfluorohexanone, sodium hexametaphosphate, resorcinol and glutaraldehyde, and the outer layer contains gelatin, kaolin, perfluorohexanone, sodium hexametaphosphate, resorcinol and glutaraldehyde; and the outer layer comprises a vinylidene fluoride-acrylic acid copolymer and glutaraldehyde. According to the invention, the flaky kaolin is used for enhancing the formaldehyde-free phenolic aldehyde inner layer and the vinylidene fluoride-acrylic acid copolymer outer layer to form a double-layer shell layer with high air tightness, so that the compactness and long-term stability of the shell layer of the microcapsule are greatly improved.

The invention discloses a double-shell-layer fire extinguishing microcapsule. The double-shell-layer fire extinguishing microcapsule comprises a core material, a first shell layer and a second shell layer, wherein the core material is coated with the first shell layer, and the first shell layer is coated with the second shell layer. By optimizing the components of the core material, reducing the volatility of the core material, improving the coating rate and arranging the double-layer microcapsule structure, the first shell layer can be formed under the low-temperature condition and is excellent in compactness, escape of the core material in the reaction can be effectively reduced, the coating rate and the yield of the microcapsule are further improved, and after full crosslinking, the product yield is improved. The second shell layer can further improve the mechanical performance of the microcapsule, the hydrophobicity and compactness of the second shell layer are beneficial for preventing polyurea and melamine resin from absorbing water and deliquescing and preventing formaldehyde harmful substances from being continuously released, the safety of the microcapsule is improved, and the microcapsule has a wider application scene and can quickly respond to the fire temperature.

The present invention relates to an all-solid-state battery. The all-solid-state battery comprises a solid electrolyte layer comprising: a non-woven fabric formed of nanofibers; and a solid electrolyte filled in the non-woven fabric, wherein the nanofiber includes a fire extinguishing solution core and a polymer shell having a melting point (Tm) of 100-180 °C, and the amount of the non-woven fabric is 5-10 wt% on the basis of the total 100 wt% of the solid electrolyte layer.