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Fire-extinguishing aerosol without toxicity and corrosion for electric appliance

A non-corrosion technology for electrical equipment, applied in the direction of fire prevention equipment, etc., can solve problems such as corrosion and damage, short circuit and damage of electronic equipment, and achieve the effects of facilitating manufacturing and installation, ensuring the overall burning speed, and overcoming corrosion phenomena

Inactive Publication Date: 2002-12-25
SHAANXI J&R FIRE FIGHTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest disadvantage of this type of aerosol extinguishing agent with potassium nitrate as the main oxidant is that a large amount of potassium nitrite and potassium oxide particles are produced during use, which have great corrosive and destructive effects
The potassium nitrite and potassium oxide particles have strong hygroscopicity. When they fall on the surface of the equipment to be protected, they will quickly absorb the moisture in the air to form droplets. These droplets not only have a strong corrosion effect on the equipment, At the same time, the conductive film formed by these droplets can also cause short circuits and other failures of electronic equipment and be damaged.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] This embodiment is the result of carrying out the scale-up test to the No. 2 test of Table 1, and the component weight percentage of this aerosol fire extinguishing agent is:

[0015] Strontium nitrate 45~55

[0016] Guanidine nitrate 40~50

[0017] Phenolic resin 1~5

[0018] The aerosol fire extinguishing agent made according to the formula of this example has the advantages of high fire extinguishing efficiency during use, and the reaction product is non-corrosive. The disadvantage is that the reaction product has certain toxicity, and is suitable for occasions where precision electrical equipment is placed in a specific small space. .

Embodiment 2

[0020] This embodiment is the result of carrying out scale-up test to Table 1 No. 3 and 4 tests, the reductive agent guanidine nitrate in embodiment 1 can be replaced by dicyandiamide, increases potassium ferricyanide in the performance improving agent, this aerosol fire extinguishing agent The component weight percentage of is:

[0021] Strontium nitrate 45~55

[0022] Dicyandiamide 30~45

[0023] Potassium ferricyanide 0~10

[0024] Phenolic resin 1~5

[0025] The aerosol fire extinguishing agent made according to the formula of this example has the advantages of fast reaction speed, high fire extinguishing efficiency, and non-corrosive reaction products. The disadvantage is that the reaction products have certain toxicity and are suitable for precision electrical equipment placed in specific For small spaces.

Embodiment 3

[0027] This embodiment is the result of carrying out the scale-up test to the No. 8 test of Table 1, and the component weight percentage of this aerosol fire extinguishing agent is:

[0028] Potassium nitrate 10~25

[0029] Strontium nitrate 35~50

[0030] Guanidine nitrate 40~50

[0031] Phenolic resin 1~5

[0032] The aerosol fire extinguishing agent made according to the formula of this embodiment has the advantages of fast reaction speed, high fire extinguishing efficiency, and the reaction product is neither toxic nor corrosive.

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PUM

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Abstract

A fire-extinguishing aerosol not generating harmful substance for electric equipment (computer, communication equipment, electric generator, etc) is prepared from oxidant (strontium nitrate or strontium nitrate / potassium nitrate), reducer (guanidine nitrate or dicyandiamide) and modifier (potassium ferrocyanide, aluminium powder, carbon powder and phenolic resin). After it is ignited by sensor, alot of fire-extinguishing particles are generated to cover on the object to be protected while the inert gas is generated for extinguishing fire.

Description

(1) Technical field [0001] The invention relates to a fire extinguishing composition and the use of chemical fire extinguishing substances, in particular to a fire extinguishing composition used for confined spaces and which does not produce harmful substances. (2) Background technology [0002] Since the 1990s, countries all over the world have been researching ecologically safe compositions for extinguishing fires in enclosed spaces. See CN97110882.X patent "Aerosol-forming composition for fire extinguishing and its preparation method". [0003] The aerosol composition uses potassium nitrate as an oxidizing agent, is matched with a corresponding reducing agent dicyandiamide and an auxiliary material phenolic resin to form a fire extinguishing composition. Through its instantaneous combustion, a large number of solid particles are produced to cover the surface of the object to be protected, so as to achieve the fire extinguishing effect. The biggest disadvantage of this t...

Claims

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Application Information

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IPC IPC(8): A62D1/02
Inventor 郭鸿宝张波岳大可
Owner SHAANXI J&R FIRE FIGHTING CO LTD
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