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A kind of high-efficiency fire extinguishing agent and fire safety fire extinguishing process

A fire extinguishing agent and safe technology, which is applied in the field of high-efficiency fire extinguishing agent and fire safety fire extinguishing technology, can solve the problems that it is difficult to effectively suppress the resurgence of lithium battery fires, lack of cooling and fire extinguishing, etc., achieve excellent cooling effect, take into account the cooling ability, prevent The effect of resurgence

Active Publication Date: 2022-02-08
HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main fire extinguishing material selected in this patent is not designed for lithium-ion battery fires. Although this type of main fire extinguishing material can stop general electrical fires, it does not have the dual functions of cooling and fire extinguishing, and it is difficult to effectively suppress lithium battery fires. the resurgence of

Method used

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  • A kind of high-efficiency fire extinguishing agent and fire safety fire extinguishing process
  • A kind of high-efficiency fire extinguishing agent and fire safety fire extinguishing process
  • A kind of high-efficiency fire extinguishing agent and fire safety fire extinguishing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This embodiment provides a high-efficiency fire extinguishing agent and fire safety fire extinguishing process, the schematic diagram of its process flow is as follows figure 1 As shown, it specifically includes the following steps:

[0045] S1, preparation of melamine urea-formaldehyde resin prepolymer

[0046] Add 7.76g melamine, 7.40g urea, 29.98g formaldehyde solution (concentration is 37wt%) and 30g distilled water in the there-necked flask, adjust its pH to 8.5~9.0 with anhydrous sodium carbonate, then, heat the there-necked flask in a water bath, with The temperature of the water bath was gradually increased from 30°C to 70°C at a rate of 2.5°C / min, and after stirring for 1 hour, the temperature was rapidly lowered to below 40°C by adding ice water. Then it was diluted with 375 g of distilled water to obtain a melamine urea-formaldehyde resin (MUF) prepolymer with a concentration of 10 wt%.

[0047] S2, preparation of high-efficiency fire extinguishing agent

...

Embodiment 2～9 and comparative example 1～3

[0058] Embodiments 2 to 9 and comparative examples 1 to 3 respectively provide a high-efficiency fire extinguishing agent and fire safety fire extinguishing process. Compared with Example 1, the difference is that some preparation parameters in steps S1 and S2 are adjusted, and each implementation The corresponding parameters of the example and the comparative example are shown in Table 2, and the rest of the steps and parameters are consistent with Example 1, and will not be repeated here.

[0059] Table 2 embodiment 2~9 and the relative process parameter of comparative example 1~3

[0060]

[0061]

[0062] Prepare the corresponding fire extinguishing agent according to the process parameters provided in Examples 2-9 and Comparative Examples 1-3, and load it on the outer surface of the aluminum-plastic film of the lithium-ion battery according to the method of step S3 in Example 1, and then perform each The fire extinguishing effect of the example and the comparative e...

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Abstract

The invention provides a high-efficiency fire extinguishing agent and fire safety fire extinguishing technology. The present invention prepares melamine urea-formaldehyde resin as shell material by preparing melamine urea-formaldehyde resin prepolymer and mixing it with montmorillonite, defoaming agent and perfluorohexanone and heptafluorocyclopentane as fire extinguishing materials. Perfluorohexanone and heptafluorocyclopentane are high-efficiency fire extinguishing agents with a core-shell structure as core materials; and by loading the prepared high-efficiency fire extinguishing agents on the outer surface of lithium-ion batteries, it provides effective safety protection for lithium-ion batteries and ensures Fire safety of lithium-ion batteries. Through the above method, the fire extinguishing process provided by the present invention can break the high-efficiency fire extinguishing agent when the lithium-ion battery is thermally out of control, release the fire extinguishing material, play the dual role of flame retardancy and fire extinguishing in time, and ensure the fire extinguishing effect while taking into account the cooling ability. The lithium-ion battery fire can be quickly extinguished and cooled, effectively preventing the re-ignition of the lithium-ion battery, so as to ensure the safety of the lithium-ion battery.

Description

technical field [0001] The invention relates to the technical field of fire safety, in particular to a high-efficiency fire extinguishing agent and fire safety fire extinguishing technology. Background technique [0002] In recent years, lithium-ion batteries have been widely used in portable products, backup power supplies, and electric vehicles due to their high energy density and long cycle life. However, during long-term use and storage, lithium-ion batteries will inevitably face problems such as extrusion, breakdown, temperature shock, overcharge, etc., resulting in damage such as short circuit, which will cause combustion or even explosion, resulting in equipment damage, casualties, etc. Accidents happen. Therefore, in the large-scale application of lithium-ion batteries, it is very important to solve the problem of fire safety. [0003] In order to ensure the safe use of lithium-ion batteries, in addition to optimizing the internal materials of the battery to reduce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D1/00A62C3/16
CPCA62D1/0021A62C3/16
Inventor 曹元成张炜鑫颜涛沙武鑫程时杰赵勇刚袁志超
Owner HUAZHONG UNIV OF SCI & TECH
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