Novel fire extinguishing agent for lithium battery and preparation method of novel fire extinguishing agent

A lithium battery and fire extinguishing agent technology, applied in fire prevention equipment, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of unresolved environmental pollution, weak oxygen isolation performance, and poor cooling rate

Active Publication Date: 2021-08-06
江苏阜民新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] CN 110368631A discloses a lithium-ion battery foam fire extinguishing agent and its preparation method. The traditional fluorocarbon surfactant is used as the foaming agent for aqueous film formation, which has certain environmental pollution problems. Dodecafluoro-2-formazol The principle of endothermic gasification of base-3-pentanone reduces the temperature, the cooling rate is poor, the performance of isolating oxygen is weak, and the problem of environmental pollution caused by harmful gases such as HF generated by battery combustion is not solved

Method used

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  • Novel fire extinguishing agent for lithium battery and preparation method of novel fire extinguishing agent
  • Novel fire extinguishing agent for lithium battery and preparation method of novel fire extinguishing agent
  • Novel fire extinguishing agent for lithium battery and preparation method of novel fire extinguishing agent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A novel lithium battery fire extinguishing agent consists of the following raw materials in parts by weight:

[0058] 6 parts by weight of flame retardant, 12 parts by weight of adsorbent, 6 parts by weight of sodium bicarbonate, 20 parts by weight of foaming agent, 12 parts by weight of foam stabilizer, and 44 parts by weight of water.

[0059] The flame retardant is a mixture of (trimethylsilyl) phosphite and zinc borate in a mass ratio of 7:1.

[0060] The adsorbent is a mixture composed of aluminum hydroxide, activated carbon and denatured vermiculite in a mass ratio of 8:4:17.

[0061] The foaming agent is a mixture of cetyl sulfobetaine and 3-sulfopropyldodecyldimethylbetaine in a mass ratio of 5:3.

[0062] The foam stabilizer is a mixture of ethylene glycol, triethylene glycol monobutyl ether and tetraethylene glycol monobutyl ether in a mass ratio of 1:3:2.

[0063] The preparation method of described novel lithium battery fire extinguishing agent is made up ...

Embodiment 2

[0072] It is basically the same as Embodiment 1, the difference is:

[0073] The preparation method of described denatured vermiculite is:

[0074]N1 uses a planetary ball mill to mill the vermiculite with a wet milling method to obtain vermiculite powder with a particle size of 1100 mesh; in the ball milling process, two sizes of zirconia balls with diameters of 0.9mm and 1.7mm are used Mix with a mass ratio of 1:2, the ball-to-material ratio is 17:1, the rotating speed of the planetary ball mill is 800r / min, the ball milling time is 18h, and the wet grinding aid is polyoxyethylene sorbitan monooleate, water A mixture composed of a mass ratio of 1:7, the mass ratio of the wet grinding aid to the vermiculite is 1.8:1; after the ball milling is completed, the precipitate A is filtered to obtain the precipitate A, and the precipitate A is washed with water and filtered again to obtain the precipitate B, and then Dry the precipitate B at 75°C to obtain the vermiculite powder; th...

Embodiment 3

[0078] It is basically the same as Embodiment 1, the difference is:

[0079] The preparation method of described denatured vermiculite is:

[0080] N1 uses a planetary ball mill to mill the vermiculite with a wet milling method to obtain vermiculite powder with a particle size of 1100 mesh; in the ball milling process, two sizes of zirconia balls with diameters of 0.9mm and 1.7mm are used Mix with a mass ratio of 1:2, the ball-to-material ratio is 17:1, the rotating speed of the planetary ball mill is 800r / min, the ball milling time is 18h, and the wet grinding aid is polyoxyethylene sorbitan monooleate, water A mixture composed of a mass ratio of 1:7, the mass ratio of the wet grinding aid to the vermiculite is 1.8:1; after the ball milling is completed, the precipitate A is filtered to obtain the precipitate A, and the precipitate A is washed with water and filtered again to obtain the precipitate B, and then Dry the precipitate B at 75°C to obtain the vermiculite powder; t...

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Abstract

The invention discloses a novel fire extinguishing agent for a lithium battery and a preparation method of the novel fire extinguishing agent. The novel fire extinguishing agent for the lithium battery is composed of a flame retardant, an adsorbent, sodium bicarbonate, a foaming agent, a foam stabilizer and water, wherein the flame retardant is a mixture of (trimethylsilyl)phosphite and zinc borate; and the adsorbent is at least one selected from the group consisting of aluminum hydroxide, activated carbon, vermiculite and modified vermiculite. The novel fire extinguishing agent for the lithium battery has the advantages of being lasting in foam, high in cooling capacity and capable of effectively adsorbing harmful gas such as hydrogen fluoride.

Description

technical field [0001] The invention relates to the technical field of lithium battery fire extinguishing agent, in particular to a novel lithium battery fire extinguishing agent and a preparation method. Background technique [0002] As my country pays more and more attention to environmental protection issues and the substantial reduction in the production cost of lithium batteries, the use of lithium-ion batteries as a new energy source to replace traditional energy sources has become the first step towards a low-carbon economy in my country, and is widely used in transportation, energy storage fields etc. Although the large-scale application of lithium batteries has improved the environment and achieved beneficial effects such as low carbon, energy saving, and environmental protection, the accompanying safety issues cannot be ignored. [0003] Lithium-ion battery fires are quite different from ordinary fires. As an energy aggregate, after thermal runaway occurs, the fire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/02A62D1/06B01J20/10B01J20/30
CPCA62D1/06B01J20/10
Inventor 易川栋
Owner 江苏阜民新材料有限公司
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