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A kind of bio-based composite hydrogel fire extinguishing material and preparation method thereof

A technology of composite hydrogel and fire extinguishing materials, applied in the field of bio-based composite hydrogel fire extinguishing materials and its preparation, to achieve the effects of strong chemical resistance, dilution of flammable gas concentration, and simple preparation methods

Active Publication Date: 2021-12-10
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fire extinguishing gel has the advantages of environmental protection, non-toxicity, strong adhesion, and strong chemical resistance, which can effectively solve the damage caused by traditional water-based fire extinguishing agents and chemical fire extinguishing agents to the quality of grain and cotton during fire extinguishing.

Method used

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  • A kind of bio-based composite hydrogel fire extinguishing material and preparation method thereof
  • A kind of bio-based composite hydrogel fire extinguishing material and preparation method thereof
  • A kind of bio-based composite hydrogel fire extinguishing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Stir and mix 1.5 parts of carboxymethyl cellulose, 1.5 parts of montmorillonite, 2.5 parts of sodium bicarbonate, 2.5 parts of potassium bicarbonate and 80 parts of tap water at 3000 r / min at 20°C for 3 minutes to obtain the first mixed solution; Stir and mix 0.5 parts of aluminum citrate and 11.5 parts of tap water at 3000r / min at 20°C for 3 minutes to obtain the second mixed solution; mix the first mixed solution and the second mixed solution at 3000r / min at 20°C Stir and mix for 3 minutes to prepare a gel slurry.

[0035] Start the grouting pump to deliver the gel slurry, and spray 10kg of the gel slurry on the burning rice pile (the rice sample comes from the Scientific Research Institute of the State Grain and Material Reserve Bureau, with an initial water content of 9.5%). The gel slurry quickly formed a gel on the surface of the rice heap. After gelation, the gel covered the surface of the high-temperature rice heap. The open flame was extinguished in 9.8s, and t...

Embodiment 2

[0042] 1.5 parts of gelatin, 1.5 parts of vermiculite, 3 parts of potassium bicarbonate, 3 parts of ammonium bicarbonate and 85 parts of distilled water were stirred and mixed at 1000 r / min for 30 minutes at 30°C to obtain the first mixed solution; 0.25 parts of citric acid Aluminum, 0.35 parts of aluminum gluconate and 5.4 parts of distilled water were stirred and mixed for 30 minutes at 30°C at 1000r / min to obtain the second mixed solution; the first mixed solution and the second mixed solution were mixed at 30°C at 1000r / min Stir and mix for 30 minutes to prepare a gel slurry.

[0043] Start the grouting pump to pump the gel slurry, and spray 10kg of the gel slurry on the burning wheat pile (the wheat sample comes from the Scientific Research Institute of the State Grain and Material Reserve Bureau, with an initial water content of 7.9%). The gel slurry quickly formed a gel on the surface of the wheat heap. After gelation, the gel covered the surface of the high-temperature...

Embodiment 3

[0050] Stir and mix 2 parts of sodium alginate, 1.5 parts of layered double hydroxide, 3 parts of sodium bicarbonate, 3 parts of potassium bicarbonate and 83 parts of tap water at 5000r / min for 30s at 37°C to obtain the first mixed solution ; 0.5 parts of aluminum gluconate and 7 parts of tap water were stirred and mixed at 5000r / min for 30s at 37°C to obtain the second mixed solution; the first mixed solution and the second mixed solution were stirred and mixed at 5000r / min for 30s, A gel slurry is formed.

[0051] Start the grouting pump to pump the gel slurry, and spray 10kg of the gel slurry on the burning rice pile (the rice sample comes from the Scientific Research Institute of the State Grain and Material Reserve Bureau, with an initial moisture content of 9.5%). The gel slurry quickly formed a gel on the surface of the rice heap. After gelation, the gel covered the surface of the high-temperature rice heap. The open flame was extinguished in 7.5s, and the temperature o...

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Abstract

The invention discloses a bio-based composite hydrogel fire extinguishing material and a preparation method thereof. The gel material is composed of the following components according to the mass fraction: water 50%-95%; bio-based gel precursor 0.01%-5% ; Cross-linking agent 0.05% to 10%; Foaming agent 0.5% to 10%; Strengthening agent 0.01% to 5%. The gel material of the present invention is mainly used for fighting fires in material storage warehouses such as cotton and grain, and is attached to the surface of burning objects by spraying, so that it is not easy to disperse, significantly reduces the temperature and heat radiation of the fire source, and does not cause re-ignition. The fire extinguishing gel has the advantages of safety and environmental protection, non-toxic and harmless, strong adhesion, strong chemical resistance, etc., and effectively solves the damage caused by traditional water-based fire extinguishing agents and chemical fire extinguishing agents to the stored materials during the fire extinguishing process.

Description

technical field [0001] The invention belongs to the technical field of fire extinguishing materials, and in particular relates to a bio-based composite hydrogel fire extinguishing material and a preparation method thereof. Background technique [0002] Grain and cotton are indispensable basic living materials for the people. For my country, which has a population accounting for 1 / 4 of the world, it is an important strategic material related to national stability and security. The quantity and quality assurance of grain and cotton reserves is a long-term important national policy of our country. At present, the total amount of various grain reserves in my country has reached 600 million tons, and the cotton and hemp reserves are also on the order of nearly 10 million tons, and the storage capacity is increasing year by year. In addition, the single-storey storage of grain and cotton reserves has also continued to increase. For example, the single-storey storage of grain in m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D1/06A62D1/00
CPCA62D1/0064A62D1/06
Inventor 时虎王鑫唐刚胡源宋磊
Owner UNIV OF SCI & TECH OF CHINA
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