Acrylamide particle hydrogel fire extinguishing agent

Abstract

The invention discloses an acrylamide particle hydrogel fire extinguishing agent, and belongs to the technical field of fire extinguishing agent production. The hydrogel fire extinguishing agent is prepared from acrylamide, a cross-linking agent, an initiator, a catalyst and water; the cross-linking agent is any one of N,N'-methylenebisacrylamide and N,N'-methylenebismethacrylamide; the initiatoris any one of ammonium persulfate, potassium persulfate and sodium persulfate; and the catalyst is any one of tetramethylethylenediamine and N,N-dimethyl-1,3-propanediamine. The prepared hydrogel fireextinguishing agent has the advantages of good solubility, suitableness for various water qualities, cheap production raw materials, high water-retaining property, high adhesion and high mechanical properties, and can be simply and conveniently operated in practical application.

Description

technical field [0001] The invention belongs to the technical field of fire extinguishing agent production, and in particular relates to an acrylamide granular hydrogel fire extinguishing agent. Background technique [0002] The fire is sudden, the fire extinguishing process is complicated, and the consequences are serious, posing a high threat to the safety of people's lives and property, economic development and social stability. Reasonable selection of fire extinguishing agents and fire extinguishing methods can greatly reduce casualties, property losses and ecological resource damage caused by fire. At present, the most important fire extinguishing materials are water-based and a series of chemical reagent fire extinguishing agents. Water has a high specific heat capacity and is widely used in fire fighting. However, water has strong fluidity and is difficult to adhere to the surface of burning objects. Moreover, it is easy to evaporate at high temperature, which has ca...

AI Technical Summary

Problems solved by technology

[0005] (1) Low dissolution rate

Most hydrogel fire extinguishing additives have a low dissolution rate in water, and some even need to be stirred to achieve a solution, which may lose the best time to extinguish the fire and cause more serious disasters;

[0006] (2) poor adhesion

When polymer additives are added to a large amount of water, the formed hydrogel particles have poor adhesion and strong fluidity, similar to water, and cannot effectively adhere to the fire point, and cannot play the role of fire extinguishing and fire resistance, and cannot achieve effective fire extinguishing ;

[0007] (3) Low water retention rate

The currently developed hydrogel fire extinguishing particles have relatively strict water quality requirements in the actual application process, and the metal ions and organic pollutants in the water will have a greater impact on the quality of the hydrogel, which is not conducive to the actual fire extinguishing application;

[0009] (5) poor mechanical properties

Some of the existing hydrogel fire extinguishing granule products are mostly used to spray on the surface of the burning material and become granular. The formed hydrogel isolation layer has poor mechanical properties and is easy to be destroyed in the continuous spraying process, resulting in heat insulation, fire extinguishing and fire resistance. The burning effect is greatly reduced, and even re-ignition occurs;

[0010] (6) It is easy to cause device blockage

The "hydrogel" added in the fire extinguishing process is mostly granular and has a solid nature. It is easy to cause blockage of the device when sprayed through the existing standard fire extinguishing device, and it is difficult to promote it in actual fire extinguishing applications;

[0011] (7) Higher cost

A variety of hydrogel fire extinguishing additives currently developed are mainly water-soluble polymers. In addition, the addition of additives such as tackifiers and adhesion promoters will inevitably increase the preparation cost.

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