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CN-122006200-A - Forest fire prevention and extinguishing gel material and preparation method thereof

CN122006200ACN 122006200 ACN122006200 ACN 122006200ACN-122006200-A

Abstract

The invention discloses a forest fire prevention gel material and a preparation method thereof, wherein the forest fire prevention gel material comprises, by mass, 3 parts of sodium silicate, 0.6-0.8 part of hydroxypropyl methyl cellulose, 3-4 parts of sodium bicarbonate, 1 part of sodium dodecyl sulfate and 13-17 parts of alkaline silica sol, wherein the water consumption is 100 parts. The gel material has excellent water retention, high viscosity and strong adhesion, and simultaneously has high foam stability and thermal stability. After combustion, a dense SiO 2 carbon layer can be formed, and a durable physical barrier is formed.

Inventors

  • WANG PENGFEI
  • LI GUOHUI
  • BAI ZHIMING
  • RONG FENGYI
  • CHEN TENG
  • YAN WEIDONG
  • YANG XIWU

Assignees

  • 应急管理部天津消防研究所

Dates

Publication Date
20260512
Application Date
20260129

Claims (10)

  1. 1. The forest fire prevention gel material is characterized by comprising, by mass, 100 parts of water, 3 parts of sodium silicate, 0.6-0.8 part of hydroxypropyl methylcellulose, 3-4 parts of sodium bicarbonate, 1 part of sodium dodecyl sulfate and 13-17 parts of alkaline silica sol.
  2. 2. The forest fire prevention gel material of claim 1 is characterized by comprising, by weight, 3 parts of sodium silicate, 0.8 part of hydroxypropyl methylcellulose, 3 parts of sodium bicarbonate, 1 part of sodium dodecyl sulfate and 16-17 parts of alkaline silica sol, wherein the water is 100 parts.
  3. 3. A forest fire control gel material according to claim 1, wherein the forest fire control gel material comprises an A material, a B material and a C material which are stored separately, The material A comprises 3 parts by mass of sodium silicate, 0.6-0.8 part by mass of hydroxypropyl methyl cellulose and 50 parts by mass of water; the material B comprises 3-4 parts by mass of sodium bicarbonate, 1 part by mass of sodium dodecyl sulfate and 50 parts by mass of water; and the material C comprises 13-17 parts by volume of alkaline silica sol.
  4. 4. A forest fire control gel material according to claim 3, wherein the forest fire control gel material comprises a material A, a material B and a material C which are stored separately, The material A comprises 3 parts by mass of sodium silicate, 0.8 part by mass of hydroxypropyl methyl cellulose and 50 parts by mass of water; The material B comprises 3 parts by mass of sodium bicarbonate, 1 part by mass of sodium dodecyl sulfate and 50 parts by mass of water; the material C comprises 16-17 parts by volume of alkaline silica sol.
  5. 5. A forest fire prevention gel material as set forth in any one of claims 1 to 4, wherein the hydroxypropyl methylcellulose has a viscosity of 15 to 25 mPas, preferably 20 mPas.
  6. 6. A forest fire prevention gel material according to any one of claims 1-4, wherein the solid content of the alkaline silica sol is 10-35%, the pH is 9.5-10.5, and preferably the solid content of the alkaline silica sol is 30%.
  7. 7. The preparation method of the forest fire prevention gel material as defined in any one of claims 1 to 6, which is characterized by comprising the following steps: (1) Adding sodium silicate and hydroxypropyl methylcellulose into part of deionized water, performing ultrasonic treatment for 30min, wherein the ultrasonic treatment frequency is 25-100 kHz, the power is 30-80W, and stirring for 1-3 min at the rotating speed of 400-600 r/min to prepare a solution A, and preserving independently; (2) Adding sodium bicarbonate and sodium dodecyl sulfate into the rest deionized water, and stirring for 5-10 min at the rotating speed of 400-600 r/min to prepare a solution B; (3) The alkaline silica sol is independently used as a component C to be independently stored; (4) When the gel material is used, the solution A, the solution B and the component C are added into a high-speed stirrer, stirred and emitted for 1min at the rotating speed of 20000-30000 r/min, and the gel material for preventing and extinguishing forest is prepared.
  8. 8. The method for preparing forest fire prevention gel material according to claim 7, wherein the deionized water in the step (1) is 50% of the total deionized water.
  9. 9. The method for preparing gel material for forest fire prevention and extinguishing according to claim 7, wherein in the step (1), the frequency of ultrasonic treatment is 40kHz and the power is 50W.
  10. 10. The application of the forest fire prevention and extinguishing gel material in forest fire prevention and extinguishing is characterized in that the forest fire prevention and extinguishing gel material is the forest fire prevention and extinguishing gel material according to any one of claims 1 to 6 or the forest fire prevention and extinguishing gel material prepared by the preparation method according to any one of claims 7 to 9.

Description

Forest fire prevention and extinguishing gel material and preparation method thereof Technical Field The invention relates to the field of fire prevention and extinguishing materials, in particular to a forest fire prevention and extinguishing gel material and a preparation method thereof. Background In recent years, the ever-increasing global climate change has increased the risk of wildfires. In face of the serious challenge, development of efficient and reliable front-edge fireproof and fire extinguishing technology to improve the capability of preventing and controlling extreme forest fires has become an urgent need in the field of global forest fire management. The development of a novel high-performance flame-retardant material for quickly constructing the fireproof isolation belt is a key technical approach for realizing active prevention and overcoming the defects of the traditional means. In the field of chemical fire prevention and extinguishing materials, gel substances are paid attention to due to the unique properties of the gel substances besides the traditional natural water, dry powder and foam. Although the water, the dry powder and the foam are respectively applied, obvious short plates are respectively arranged, for example, the natural water has weak adhesive force and is difficult to stay for a long time, the dry powder is easy to cause environmental pollution and has limited effect of inhibiting re-combustion, and the foam has unstable structure and short lasting effect and is difficult to cope with the continuous high temperature of a fire scene. In contrast, gel materials, particularly silicon-based gels formed on water glass and a setting accelerator, exhibit practical advantages of wide raw materials, rapid gelation, and the like. However, the inorganic gel has the core defect of insufficient water retention capacity, and is easy to crack and pulverize after water loss, so that the flame retardance durability of the inorganic gel is greatly reduced. On the other hand, organic polymer gels such as systems based on sodium carboxymethyl cellulose, polyacrylamide and the like generally have better performance in terms of water retention and mechanical strength, but the popularization and application of the organic polymer gels are often limited by the practical problems of high preparation cost, poor system fluidity, difficult permeation and the like. Therefore, how to cooperatively exert the advantages of inorganic and organic components through a material compounding strategy has become an important research direction for breaking through the bottleneck of single gel performance. Disclosure of Invention The present invention aims to solve at least one of the technical problems in the related art to some extent. For this reason, the embodiment of the invention provides a forest fire prevention gel material and a preparation method thereof. The invention adopts the following technical scheme: in a first aspect of the present invention, The embodiment of the invention provides a forest fire prevention and extinguishing gel material, which is prepared from the following raw materials, by mass, 3 parts of sodium silicate, 0.6-0.8 part of hydroxypropyl methylcellulose, 3-4 parts of sodium bicarbonate, 1 part of sodium dodecyl sulfate and 13-17 parts of alkaline silica sol, wherein the water consumption is 100 parts by mass. It is understood that when the unit of parts by mass is g, the unit of parts by volume is mL. In some preferred embodiments, the forest fire prevention gel material comprises, by weight, 100 parts of water, 3 parts of sodium silicate, 0.8 part of hydroxypropyl methylcellulose, 3 parts of sodium bicarbonate, 1 part of sodium dodecyl sulfate and 16-17 parts of alkaline silica sol. In some preferred embodiments, the forest fire control gel material comprises a material A, a material B and a material C which are stored separately, wherein, The material A comprises 3 parts by mass of sodium silicate, 0.6-0.8 part by mass of hydroxypropyl methyl cellulose and 50 parts by mass of water; the material B comprises 3-4 parts by mass of sodium bicarbonate, 1 part by mass of sodium dodecyl sulfate and 50 parts by mass of water; and the material C comprises 13-17 parts by volume of alkaline silica sol. In some preferred embodiments, the forest fire control gel material comprises a material A, a material B and a material C which are stored separately, wherein, The material A comprises 3 parts by mass of sodium silicate, 0.8 part by mass of hydroxypropyl methyl cellulose and 50 parts by mass of water; The material B comprises 3 parts by mass of sodium bicarbonate, 1 part by mass of sodium dodecyl sulfate and 50 parts by mass of water; the material C comprises 16-17 parts by volume of alkaline silica sol. In some embodiments, the hydroxypropyl methylcellulose has a viscosity of 15 to 25 mPa-s. More preferably 20 mPas. In some embodiments, the alkaline silica sol (dispersion of silica pa