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CN-121971832-A - Special water-based flame-retardant fire-extinguishing agent for forest and grasslands and preparation method and application thereof

CN121971832ACN 121971832 ACN121971832 ACN 121971832ACN-121971832-A

Abstract

The invention belongs to the technical field of fire extinguishing agents, and particularly provides a water-based fire-retarding fire-extinguishing agent special for forest and grasslands, a preparation method and application thereof, wherein the water-based fire-retarding fire-extinguishing agent comprises, by weight, 0.1-1 part of a water-soluble polymer auxiliary agent, 30-60 parts of phosphate, 5-15 parts of a free radical capturing agent, 2-5 parts of a penetrating agent, 10-30 parts of modified volcanic soil, 2-10 parts of a fire-retarding auxiliary agent, 20-30 parts of deionized water and 70-192 parts of a porous material. The water-based flame-retardant fire-extinguishing agent abandons harmful components such as fluorine, heavy metal and the like, has no ecological pollution in the whole process from use to residue, solves the core problems of difficult water conservation, poor effect, heavy pollution and low efficiency of traditional forest and grassland fire control, synchronously realizes the integrated targets of flame retardance, fire extinguishment and ecological restoration, and provides high-efficiency, environment-friendly, stable and durable technical support for forest and grasslands with water resource shortage in mountain areas, arid areas and the like.

Inventors

  • ZHANG JIANQING
  • TAN LONGMEI

Assignees

  • 睿实科莫多(南京)消防科技有限公司

Dates

Publication Date
20260505
Application Date
20260331

Claims (10)

  1. 1. The water-based flame-retardant fire-extinguishing agent is characterized by comprising, by weight, 0.1-1 part of a water-soluble polymer auxiliary agent, 30-60 parts of phosphate, 5-15 parts of a free radical capturing agent, 2-5 parts of a penetrating agent, 10-30 parts of modified volcanic soil, 2-10 parts of a flame-retardant auxiliary agent, 20-30 parts of deionized water and 70-192 parts of a porous material.
  2. 2. The special water-based flame-retardant fire-extinguishing agent for forest grasslands as claimed in claim 1, wherein the water-soluble polymer auxiliary agent is one of xanthan gum, guar gum, sodium alginate, methyl cellulose and hydroxyethyl cellulose.
  3. 3. The special water-based fire-retarding and fire-extinguishing agent for forest lands according to claim 1, wherein the phosphate is one or more of diammonium phosphate, monoammonium phosphate, type II ammonium polyphosphate and melamine resin coated ammonium polyphosphate.
  4. 4. The special water-based flame-retardant fire-extinguishing agent for forest lands according to claim 1, wherein the free radical scavenger is one or more of alkyl substituted phosphoramidates, melamine polyphosphate and pentaerythritol phosphate.
  5. 5. The special water-based fire-retarding and fire-extinguishing agent for forest lands as claimed in claim 1, wherein the penetrating agent is a nonionic surfactant.
  6. 6. The special water-based fire-retarding and fire-extinguishing agent for forest lands as claimed in claim 1, wherein the preparation steps of the modified volcanic soil are as follows: (1) Mixing natural volcanic soil and concentrated hydrochloric acid, fully stirring and activating for 2-4 hours, washing to be neutral, filtering and drying to obtain pre-activated volcanic soil; (2) Mixing gamma-methacryloxypropyl trimethoxy silane and mercaptoethyl trimethyl ammonium chloride in an inert atmosphere, adding an initiator, reacting for 1-2h at 40-50 ℃, and distilling under reduced pressure to obtain a modifier; (3) Mixing the pre-activated volcanic soil in the step (1) and the modifier in the step (2), adding the mixture into an ethanol solution, heating to 50-70 ℃, reacting for 3-6 hours under stirring, centrifuging after the reaction, taking a precipitate, washing, drying, crushing and sieving to obtain the modified volcanic soil.
  7. 7. The special water-based fire-retarding and extinguishing agent for forest lands as claimed in claim 6, wherein in the step (2), the mass ratio of the gamma-methacryloxypropyl trimethoxysilane to the mercaptoethyl trimethyl ammonium chloride is (1-1.5): 1.
  8. 8. The special water-based fire-retarding and fire-extinguishing agent for forest grasslands as claimed in claim 1, wherein in the step (3), the dosage ratio of the pre-activated volcanic soil to the modifier is 1 (0.05-0.1).
  9. 9. A method for preparing the water-based fire-retarding and extinguishing agent special for forest lands as claimed in any one of claims 1 to 8, which is characterized by comprising the following steps: S1, mixing, namely stirring a water-soluble polymer auxiliary agent, phosphate, a free radical capturing agent, a penetrating agent, modified volcanic soil and deionized water for 2-4 hours at 20-55 ℃ and 120-300r/min to obtain a mixture; S2, embedding, namely introducing the mixture obtained in the step S1 into a porous material, standing and adsorbing for 3-6 hours at normal temperature and normal pressure, and drying at 40-50 ℃ to obtain the water-based fire-retarding extinguishing agent special for forest and grasslands.
  10. 10. Use of a water-based fire-retarding and extinguishing agent according to any of claims 1-8 or obtained by the method according to claim 9 for fire-retarding and extinguishing in forest and grasslands, characterized in that the water-based fire-retarding and extinguishing agent can be used directly or in suspension in an amount of 10-50 wt%.

Description

Special water-based flame-retardant fire-extinguishing agent for forest and grasslands and preparation method and application thereof Technical Field The invention belongs to the technical field of fire extinguishing agents, and particularly relates to a water-based fire-retarding fire extinguishing agent special for forest and grasslands, and a preparation method and application thereof. Background The current forest grassland fire-fighting field has entered the intelligent transformation stage of 'technical prevention leading, intelligent prevention supporting and man-machine cooperation', and has formed a comprehensive prevention and control system combining water fire extinguishment as a main material, chemical fire extinguishment as an auxiliary material, mechanical blocking, manual cleaning and biological fire prevention, and the development of intelligent, accurate and ecological transformation is accelerated. However, as a whole, the technical system still has a plurality of short boards, and the difficulty of fire-fighting work is commonly aggravated in a plurality of remote mountain areas in forest and grasslands, special geographical locations, limited resource conditions and extreme scenes caused by climate change. Wherein, the water source is in dilemma of acquisition and transportation, the fire extinguishing agent has insufficient efficiency, hidden environmental protection trouble, single prevention and control means, and the like, the fire extinguishing agent becomes a main core pain point for restricting the improvement of the fire extinguishing efficiency of the forest grasslands, directly causes the linkage problems of low fire extinguishing efficiency, high reburning rate, large ecological damage risk and the like, and needs to be systematically solved. The congenital geographic conditions of forest grasslands in remote mountains determine that the water source guarantee is always the primary difficult problem of fire fighting, and three major symptoms of far, less and slow are mutually overlapped to form rigid constraint which is difficult to break through. From the water source supply, the natural water source has obvious short plates, most areas depend on seasonal rivers, scattered mountain springs or shallow groundwater, the conditions of current interruption, sharp water quantity reduction and the like occur in dead water period, the total amount of available water sources is seriously insufficient, meanwhile, the water sources are extremely scattered, fixed water taking points and matched water taking facilities are lacking, and the straight line distance between part of fire fields and the nearest water source is more than 5 kilometers, even more. More serious, the mountainous terrain is complex, the ravines are vertical and horizontal and the gradient is steep, large-scale water transportation vehicles are difficult to pass, and even if the vehicles arrive barely, a great deal of time is consumed, and the optimal rescue opportunity is seriously delayed. From the aspect of transportation efficiency, the existing guarantee mode has obvious limitation that the current fire extinguishing operation is highly dependent on two core devices of a water truck and a helicopter bucket, but the two core devices have outstanding short plates. The helicopter bucket can break through the terrain obstacle, but is influenced by the meteorological conditions, the lifting sites, the load limit and the like, the single water-lifting quantity is limited, the replenishment frequency is low, and the overall water supply efficiency is low. The low-efficiency water source supplying mode often causes insufficient water supply in a fire scene, can not thoroughly extinguish a fire, is particularly difficult to effectively control deep smoldering fire, and further causes high-frequency reburning, thereby increasing fire extinguishing cost and safety risk. The fire extinguishing agent is core material for forest and grassland fire extinguishment, but the current application situation of the fire extinguishing agent has double unbalance of 'insufficient efficiency' and 'hidden environmental trouble', thereby affecting the fire extinguishing effect and forming potential threat to ecological environment. On one hand, the traditional extinguishing agent has low efficiency and is difficult to adapt to complex extinguishing scenes. At present, a large amount of pure water or traditional chemical foam is still used in forest and grassland extinguishment, and both the two types of extinguishants have obvious defects that the adhesion force of the clean water on the vegetation surface is extremely poor, the clean water is easy to run off or evaporate quickly after spraying, a continuous and effective covering layer cannot be formed, the pressing effect on open fire is short, the effect of radically curing smoldering fire is more difficult, the traditional chemical foam has a slightly stronger adhesion force than the c