Fire extinguishing aerosol composition suitable for use for precise electric equipment

Abstract

The present invention relates to one kind of fire extinguishing aerosol composition suitable for use for precise electric equipment. The fire extinguishing aerosol composition includes oxidant mixture comprising potassium salt in 5-15 wt% and strontium salt in 52-60 wt%; flammable of guanidines, azoles and / or their salt; additive of metal powder, metal oxide powder, carbon powder, inorganic salt, organic acid and / or organic salt; and adhesive of resin, cellulose, ester and / or polymer; with all the components having size below 50 micron. It is used in extinguishing fire of precise electric equipment, and can ensure the insulating resistance not lower than 100 megaohms. The present invention is environment friendly.

Description

technical field [0001] The invention belongs to the technical field of fire extinguishing compositions, and relates to an aerosol fire extinguishing composition suitable for extinguishing Class A and B fires in relatively closed spaces, in particular to an aerosol fire extinguishing composition suitable for precision electrical equipment. Background technique [0002] The aerosol fire extinguishing technology that has appeared since the 1990s is based on a violent redox reaction between the oxidant and the fuel, and through the chemical reaction of the active inhibitor produced, it destroys the free radical combustion chain reaction in the flame. It has attracted much attention because of its non-toxic, non-corrosive, high volumetric efficiency, long storage period, full submersion, and all-round fire extinguishing. From the end of the last century to the present, aerosol technology has developed rapidly. , related patents emerge in endlessly. There are three main types of ...

AI Technical Summary

Problems solved by technology

[0005] Among the existing technologies CN1739820A, CN1150952C, and CN1222331C that are relatively close to the technical subject of the present invention, CN1150952C and CN1222331C are the prior patented technologies of the inventor of the present application. Regarding the corrosion of electrical equipment, there is no classification design according to the insulation requirements of electrical equipment, because different types of electrical equipment have different tolerances for the decline in insulation resistance caused by different dangerous static electricity accumulation or acid-base corrosion. For example: for generators, motors, high and low voltage electrical appliances, power grids, cables and other high-voltage electrical devices, the insulation resistance is generally required to be ≥1MΩ to <20MΩ. Please refer to the series of standards for the electric power industry of the People's Republic of China, such as: DL / T5161. 7-2002 "Regulations for Quality Inspection and Evaluation of Electrical Installation Engineering (Construction Quality Inspection of Rotating Electric Machines)" etc.; For ordinary electrical equipment such as communications, computers, vehicle electrical equipment, medical electrical equipment, etc., the insulation resistance is generally required to be ≥ 20 to < 100MΩ , can refer to the series "Electronic Industry Standards of the People's Republic of China", "Communication Industry Standards of the People's Republic of China" series, "Computer Industry Standards of the People's Republic of China" series, such as GB6649-86 "General Specifications for Semiconductor Integrated Circuits", IPC 9201 "Surface Insulation Resistor Handbook" and so on; for precision electrical equipment composed of printed circuit boards, substrates, etc., the insulation resistance is generally required to be ≥ 100MΩ, please refer to the "People's Republic of China Electronics Industry Standards" series, "International Printed Circuit Industry Standards" series, etc., for example IPC-CC-830B "Printed Edition Assembled Electrical Insulation Performance and Quality Manual", GB 4793 "Safety Requirements for Electronic Measuring Instruments", GJB1717-93 "General Specifications for Universal Printed Circuit Board Connectors", etc.; The requirements are different, and the fire extinguishing composition for electrical equipment using the same formula has inappropriate problems in fire extinguishing efficiency and cost.

Therefore, including the prior patent of the present invention, the components and their content design in the medicament are not perfect enough, and some technical characteristic parameters need to be improved

In the prior art before the present invention, in addition to the above-mentioned several technologies, the special technology of aerosol fire extinguishing composition suitable for precision electrical equipment that does not reduce the fire extinguishing efficiency has not been found.