Novel fire extinguishing material and preparation method thereof

Abstract

The invention provides a novel fire extinguishing material and a preparation method thereof. According to the novel fire extinguishing material and the preparation method thereof, acrylic acid and acrylamide are used as water-absorbing monomers to be subjected to cross-linking reaction under the action of a cross-linking agent and an initiator so as to generate gel, chitosan is added in the gel preparation process, so that the rigidity of the gel is improved, the water absorption rate of the gel is increased, and the gel is not liable to be dried and cracked at a high temperature; and a surface active agent is further compounded to form a stable and efficient foaming agent, abundant and compact foams are formed through high-speed stirring at the later stage of the cross-linking reaction soas to achieve the fire extinguishing effect, in addition, the formation of gel pores is facilitated by the aid of a stabilizer and a pore-forming agent of sodium carbonate at the later stage of the gel forming process, so that the swelling rate can be greatly increased, meanwhile, ammonium polyphosphate is modified, so that the hydrophobicity and the grafting performance can be improved, and grafting is carried out on the gel by utilizing the cross-linking reaction, so that the fire extinguishing performance can be further improved. The fire extinguishing material has the advantages of beinghigh in fire extinguishing performance, high in speed, good in effect, capable of improving the fire extinguishing efficiency, capable of preventing recrudescence of a fire, low in application cost and suitable for large-scale popularization.

Description

technical field [0001] The invention relates to the field of fire extinguishing materials, in particular to a novel fire extinguishing material and a preparation method thereof. Background technique [0002] The occurrence and development of combustion must meet three conditions, namely combustible substances, combustion aids and flames. In order to prevent combustion, any one of the three elements of the combustion process must be cut off, such as lowering the temperature, isolating air or flame retardants. At present, for relatively large-scale fires, most of them use fire trucks equipped with water to go to the fire house to extinguish the fire, and use high-pressure water gun jetting to quickly reduce the temperature of the burning materials on site to achieve the effect of fire extinguishing. Water is the most commonly used substance in fire extinguishing. Adding fire extinguishing agents to water, such as foam condensed by foam fire extinguishing agents, can form a pac...

AI Technical Summary

Problems solved by technology

However, the current gel fire extinguishing agent has the disadvantages of long gelation time, easy dehydration, shrinkage and then cracking and pulverization of the colloid in the air after gelation, and cannot effectively control the spread of fire in time. The effect is good, but due to the high unit construction cost, it is difficult to use it in a large area. Therefore, according to the current situation of frequent fires, providing a new type of fire extinguishing material is a research hotspot in the field of fire protection.