A kind of aerosol fire extinguishing agent for hand-held fire extinguisher and preparation method thereof

Abstract

The invention discloses an aerosol fire extinguishing agent for a hand-held fire extinguisher and a preparation method thereof. The fire extinguishing agent comprises the following components in terms of mass percentage: 44%-62% of potassium nitrate, 5%-10% of potassium perchlorate, and ammonium nitrate 3%~8%, iron oxide 0.5%~1.5%, melamine 10%~25%, phenolic resin 5%~9%, nitroguanidine 5%~12%. The preparation steps are as follows: dissolve part of the phenolic resin with alcohol, then add the potassium nitrate, the potassium perchlorate, the ammonium nitrate, the iron oxide, the melamine, the nitroguanidine and the remaining The phenolic resin is mixed and stirred evenly to form a lump, sieved, granulated, dried, and pressed to form. The composition of the fire extinguishing agent is simple, the cost is low, the preparation process is easy to implement, and it is safe and reliable. The compatibility between the components in the fire extinguishing agent is good. Less residue.

Description

technical field [0001] The invention relates to the technical field of aerosol fire extinguishing, in particular to an aerosol fire extinguishing agent for a hand-held fire extinguisher and a preparation method thereof. Background technique [0002] Aerosol fire extinguishing technology is a new type of high-tech fire extinguishing technology developed on the basis of military pyrotechnic technology. As early as the 1960s, our country's scientific and technological personnel used this technology to extinguish smoke from large oil tanks and made a major breakthrough. This is Early aerosol technology. In the 1980s, scientific and technological workers in the former Soviet Union successfully tested the aerosol technology that can extinguish fires in the way of total flooding. This technology opened up a new way for the research on the replacement of halon fire extinguishing technology. [0003] The fire extinguishing mechanism is that the solid tiny particles produced by combu...

AI Technical Summary

Problems solved by technology

During the process from gas generation to fire extinguishing, if the particle size of the solid particles is too large, the gas will not be able to bear the load, and the particles will settle quickly, which will not achieve the effect of completely extinguishing the fire; but if the particles are too small, they will be easily absorbed by the airflow. Driven, it may be far away from the fire point or the fire source, and it will also not achieve the fire extinguishing effect of the project

In terms of research on the amount of solid particles, if the ratio of various elements in the formulation of the agent is unreasonable, the amount of gas will be small and the amount of solid particles will be too much, and it will also not be able to play an effective fire extinguishing role.