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Fire extinguishing agent capable of extinguishing lithium battery fire and preparation method

A technology of fire extinguishing agent and lithium battery, which is applied in the direction of fire prevention equipment, etc., can solve the problems of inability to quickly suppress the initial fire, long spraying time of fire equipment, and low fire extinguishing efficiency, so as to achieve rapid and efficient extinguishment, rapid suppression of initial fire, and fire extinguishing high efficiency effect

Pending Publication Date: 2019-07-12
SHENZHEN HONGHAISHENG SPECIAL FIRE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The current fire-fighting equipment has a long injection time and low fire-extinguishing efficiency, which cannot quickly suppress the initial fire situation

Method used

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Comparison scheme
Effect test

preparation example Construction

[0038] In order to achieve the above object, the present invention also proposes a method for preparing a fire extinguishing agent capable of extinguishing a lithium battery fire. The method is applied to the above-mentioned fire extinguishing agent capable of extinguishing a lithium battery fire. The method includes the following steps:

[0039] S1. Dry and mix the oxidizing agent, combustible agent and modifying agent with a particle size of less than 20 μm at 50-80° C. to obtain a mixture.

[0040] Wherein, the drying treatment can be performed at 50° C., or 65° C., or 80° C., but it is not limited to the listed data, and other unlisted values ​​within the above numerical ranges are also applicable.

[0041] S2. The mixture is uniformly placed in a saturated solution of the mixture at 20° C. to obtain a mixed solution.

[0042] S3. Uniformly heating the mixed solution obtained in step S1 to 100° C. at 5° C. / min, and uniformly stirring for 30 minutes to obtain a heated solut...

Embodiment 1

[0056] In the present embodiment, based on 100% (100g) of the total mass of the components of the fire extinguishing agent that can extinguish the lithium battery fire, its components and mass fractions are as follows: potassium nitrate 60% (60g), potassium nitrite 5% ( 5g), guanidine nitrate 5% (5g), sodium nitrate 5% (5g), hexamethylenetetramine 3% (3g), magnesium powder 2% (2g), potassium polyacrylate 8% (8g), potassium sulfate 4% (4g), ammonium dihydrogen phosphate 3% (3g) and phenolic resin 5% (5g).

[0057] First dry potassium nitrate, potassium nitrite, guanidine nitrate, sodium nitrate, hexamethylenetetramine, magnesium powder, potassium polyacrylate, potassium sulfate, and ammonium dihydrogen phosphate with a particle size of less than 20m at 80°C, and then mix them evenly , was added to the saturated solution of the mixed substance at 20°C, the mixed solution was evenly heated to 100°C at 5°C / min, stirred evenly for 30 minutes, and then cooled to 20°C at a cooling ra...

Embodiment 2

[0060] In the present embodiment, based on the total mass of raw materials of the fire extinguishing agent that can extinguish the lithium battery fire as 100% (100g), its components and mass fractions are as follows: potassium nitrate 55% (55g), potassium oxide 5% ( 5g), ammonium nitrate 5% (5g), ammonium perchlorate 5% (5g), magnesium powder 4% (4g), dicyandiamide 3% (3g), sodium polyacrylate 8% (8g), sodium chloride 7% (7g), ammonium chloride 5% (5g) and phenolic resin 3% (3g).

[0061] First dry potassium nitrate, potassium oxide, ammonium nitrate, ammonium perchlorate, magnesium powder, dicyandiamide, sodium polyacrylate, sodium chloride and ammonium chloride with a particle size of less than 20m at 80°C, then mix them evenly, and add In the saturated solution of the mixed substance at 20°C, heat the mixed solution evenly to 100°C at 5°C / min, and stir evenly for 30 minutes; then cool down to 20°C at a cooling rate of 5°C / min, and use filtering equipment, Filter out the p...

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Abstract

The invention discloses a fire extinguishing agent capable of extinguishing lithium battery fire and a preparation method. The aerosol fire extinguishing agent is prepared from components in percentage by mass as follows: 70%-80% of an oxidizing agent, 5%-10% of a combustible agent, 10%-20% of a modifier and 3%-5% of an adhesive, wherein the oxidizing agent is potassium nitrate or a mixture of potassium nitrate with one or more of potassium nitrite, guanidine nitrate, sodium nitrate, ammonium nitrate, barium nitrate, potassium perchlorate, ammonium perchlorate and potassium oxide. Compared with the prior art, the spray time can be shortened, the extinguishment efficiency can be improved, and the initial fire condition of power battery fire can be suppressed quickly.

Description

technical field [0001] The invention relates to the technical field of fire extinguishing agents for fire engineering, in particular to a fire extinguishing agent capable of extinguishing lithium battery fires and a preparation method thereof. Background technique [0002] In recent years, with the vigorous promotion of new energy vehicles and energy storage batteries, it can be seen that the power battery industry has become an emerging industry that my country focuses on. However, unlike other fuel energy sources, power batteries often have accidents such as spontaneous combustion and deflagration during charging and discharging, which makes the industry have to re-examine the safety of power batteries. [0003] From the analysis of the types of accidents, the spontaneous combustion of power batteries is usually caused by high temperature, external force, self-aging, overcharging and other reasons. Power lithium batteries are usually used in combination, so once a fire br...

Claims

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Application Information

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IPC IPC(8): A62D1/06
CPCA62D1/06
Inventor 王俊谢足荣谢伟
Owner SHENZHEN HONGHAISHENG SPECIAL FIRE TECH CO LTD
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