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Condensed aerosol fire extinguishing agent as well as preparation method and application thereof

A technology of fire extinguishing agent and sol, applied in the field of hot aerosol fire extinguishing agent and its preparation, can solve the problems of poor conductivity and corrosion resistance, short circuit of electrical equipment, secondary damage, etc., and achieve the effect of good extinguishing performance and increasing combustion thermal resistance.

Pending Publication Date: 2022-04-19
YICHANG JI AN DUN FIRE FIGHTING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, some hot aerosol fire extinguishing agents capable of extinguishing Class A fires also have the problems of poor electrical conductivity and strong corrosion resistance. If the electrical conductivity is low, it is easy to cause short circuit of electrical equipment during the fire extinguishing process and cause secondary damage , and when the corrosiveness is high, that is, the pH is low, it will also cause irreversible damage to the objects during the fire extinguishing process, which is not conducive to the practical application of hot aerosol fire extinguishing agents
Therefore, the conductivity and corrosion resistance of thermal aerosol fire extinguishing agent need to be further improved

Method used

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  • Condensed aerosol fire extinguishing agent as well as preparation method and application thereof
  • Condensed aerosol fire extinguishing agent as well as preparation method and application thereof
  • Condensed aerosol fire extinguishing agent as well as preparation method and application thereof

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preparation example Construction

[0070] The present invention also provides the preparation method of above-mentioned thermal aerosol fire extinguishing agent, comprises the steps:

[0071] mixing the oxidizing agent, the reducing agent and the passivating agent in parts by weight to prepare a solid mixture;

[0072] dissolving the binder in a solvent to prepare a liquid mixture;

[0073] adding the liquid mixture to the solid mixture for mixing, and granulating to prepare wet granules;

[0074] The wet granules are dried and pressed to form a hot aerosol fire extinguishing agent.

[0075] In one example, in the press molding step, the pressure is 5-10 MPa. Further, the compression molding pressure includes but not limited to: 5MPa, 6MPa, 7MPa, 8MPa, 9MPa, 10MPa. It can be understood that the compression molding can adopt dual-mode bi-directional cold compression molding, and the temperature of the compression molding is room temperature.

[0076] Further, the preparation method of thermal aerosol fire ex...

Embodiment 1

[0088] The present embodiment provides a kind of thermal aerosol fire extinguishing agent, and its raw material composition is as follows:

[0089]

[0090] The preparation method is as follows:

[0091] (1) Premix ammonium nitrate, ammonium dihydrogen phosphate, and basic magnesium carbonate after drying and weighing in proportion, and then pass through a 100-mesh standard sieve to mix evenly after premixing to obtain a solid mixture;

[0092] (2) Dissolving the phenolic resin in ethanol, adding it to the solid mixture obtained in step (1) after dissolving completely, mixing evenly and sieving and granulating with a 20-mesh standard sieve to obtain wet granules;

[0093] (3) Dry the wet granules obtained in step (2) in a constant temperature and humidity environment with a temperature of 35°C and a humidity lower than 50% until the solvent content in the medicament is lower than 1%, and weigh it at a pressure of 5 MPa after reaching the requirements Under the double-mode ...

Embodiment 2

[0095] The present embodiment provides a kind of thermal aerosol fire extinguishing agent, and its raw material composition is as follows:

[0096]

[0097] The preparation method is as follows:

[0098] (1) Strontium nitrate, phosphorus pentanitride, basic magnesium carbonate are dried and premixed after being weighed in proportion, and then mixed evenly through a 100-mesh standard sieve after premixing to obtain a solid mixture;

[0099] (2) Dissolving the phenolic resin in ethanol, adding it to the solid mixture obtained in step (1) after dissolving completely, mixing evenly and sieving and granulating with a 20-mesh standard sieve to obtain wet granules;

[0100] (3) Dry the wet granules obtained in step (2) in a constant temperature and humidity environment with a temperature of 35°C and a humidity lower than 50% until the solvent content in the medicament is lower than 1%, and weigh them at a pressure of 6 MPa after reaching the requirements Under the double-mode two-w...

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Abstract

The invention relates to a condensed aerosol fire extinguishing agent and a preparation method and application thereof. The condensed aerosol fire extinguishing agent comprises the following raw material components in parts by weight: 20-80 parts of an oxidizing agent, 10-70 parts of a reducing agent, 4-15 parts of an adhesive, 1-25 parts of a passivating agent and 5-15 parts of a solvent, and the types of specifically used oxidizing agents and reducing agents are limited. According to the invention, specific types of reducing agent, oxidizing agent, adhesive, passivator and solvent are reasonably proportioned in the condensed aerosol fire extinguishing agent, so that the prepared condensed aerosol fire extinguishing agent can synergistically exert the fire extinguishing effect from multiple aspects after being sprayed on a fire scene, and especially can efficiently extinguish class-A fire disasters without re-combustion after fire extinguishment.

Description

technical field [0001] The invention relates to the technical field of fire fighting, in particular to a hot aerosol fire extinguishing agent and its preparation method and application. Background technique [0002] Fires can be divided into six categories: A, B, C, D, E, and F according to the combustion characteristics of substances. Among them, category A fires refer to solid substance fires, such as hay, wood, coal, cotton, wool, linen, paper, etc. These substances tend to be organic in nature and generally produce glowing embers when burned. [0003] Aerosol fire extinguishing agent refers to a sol system with fire extinguishing effect formed by using air as the dispersion medium and solid or liquid fire extinguishing agent particles as the dispersant. Aerosol fire extinguishing agent originated in the Soviet Union in the 1960s, and has been developed for about 60 years. Various aerosol fire extinguishing agent formulations have emerged one after another. The aerosol ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/00
CPCA62D1/0064
Inventor 黄瑞程虎张华
Owner YICHANG JI AN DUN FIRE FIGHTING TECH CO LTD
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