Ultra-low temperature foam fire extinguishing agent

Abstract

The invention relates to an ultra-low temperature foam fire extinguishing agent. The ultra-low temperature foam fire extinguishing agent comprises the following raw materials in percentage by weight: 3 to 5% of diethylene glycol monobutyl ether, 6-10% of a compound fluorocarbon surfactant, 10-15% of sodium benzoate, 10-15% of a foaming agent, 10-15% of a solubilizing agent, 4 to 6% of trifluoromethane, 6-10% of carbon dioxide, 15-23% of triethanolamine phosphate, and 15-25% of water. The ultra-low temperature foam fire extinguishing agent obtained from the materials in percentage by weight is suitable for low-temperature environment, is environment-friendly, and is stable and effective for a long time.

Description

technical field [0001] The invention belongs to the technical field of fire protection, and in particular relates to an ultra-low temperature foam fire extinguishing agent. Background technique [0002] Fire extinguishing agent refers to the substance that can effectively destroy the combustion conditions and terminate the combustion. Fire extinguishing foam is a small volume of bubbles surrounded by liquid on the surface, with a specific gravity between 0.001 and 0.5. Since the specific gravity of foam is much smaller than that of general flammable liquids, it can float on the surface of the liquid to form a foam covering layer. At the same time, the foam has a certain viscosity and can adhere to the surface of general combustible solids. The foam covering formed by fire extinguishing foam on the surface of the burning object can isolate the surface of the burning object from the air. In the prior art, the ultra-low temperature foam fire extinguishing agent has the follo...

AI Technical Summary

Problems solved by technology

In the prior art, the ultra-low temperature foam fire extinguishing agent has the following disadvantages: First, due to the high flame combustion temperature, usually the fire scene temperature reaches above 1100°C, so that when the foam fire extinguishing agent is sprayed on the ignition point, the fire extinguishing agent is instantly evaporated, thereby failing to reach Therefore, the foam produced by the fire extinguishing agent can exist stably when the fire temperature drops, and the fire can be quickly extinguished, and the temperature drops rely on water evaporation to absorb heat, and the cooling effect is not good, making the fire extinguishing speed slower , at the same time, when the foam fire extinguishing agent of the prior art is at minus 50 degrees Celsius, the fire extinguishing agent is solidified, making it unsuitable for low-temperature environments, and its adaptability is weak; As a result, some still use R-13 as an ultra-low temperature refrigerant, that is, chlorotrifluoromethane, because R-13 belongs to the CFC class of substances (the first batch of restricted ODS substances Class I Ozone-depleting Substances) - the ozone layer There is damage, and there is a greenhouse effect, causing environmental damage

However, in the ultra-low temperature foam fire extinguishing agent added with triethanolamine phosphate, there is a problem of instability of the fire extinguishing agent if the ratio of the fire extinguishing agent material is not good. Over time, the fire extinguishing effect will be low or even invalid.