Instant matched naturally-degradable sodium alginate hydrogel fire extinguishing agent and using method thereof

A technology of sodium alginate and hydrogel, which is applied in the direction of fire prevention equipment, etc., to achieve the effects of easy storage, shortening the dissolution time, and increasing solubility

Inactive Publication Date: 2019-05-03
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the existing hydrogel fire extinguishing materials, the patent of the present invention aims to provide a ready-to-mix naturally degradable sodium alginate hydrogel fire extinguishing agent and its application method

Method used

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  • Instant matched naturally-degradable sodium alginate hydrogel fire extinguishing agent and using method thereof
  • Instant matched naturally-degradable sodium alginate hydrogel fire extinguishing agent and using method thereof
  • Instant matched naturally-degradable sodium alginate hydrogel fire extinguishing agent and using method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 14g of sodium alginate, 85.8g of glucose, and 0.2g of sodium carbonate were mixed evenly. Dissolve sodium alginate, glucose, and sodium carbonate in 2000g deionized water, and prepare calcium chloride into a deionized aqueous solution with a concentration of 2‰; when using, first spray the mixed solution of sodium alginate, glucose, and sodium carbonate, and then spray Calcium chloride aqueous solution, sodium alginate and calcium ions are instantly cross-linked to form a hydrogel layer covering the surface of the burning object to extinguish the fire source.

[0036] attached figure 1 The comparison chart of the effect of the hydrogel of the present invention and the common fire extinguishing agent is given. It can be seen from the figure that the fire extinguishing agent of the present invention (top) can form a complete film, while other fire extinguishing agents (bottom) cannot form some water-absorbing particles Overall; thus it is verified that the hydrogel of th...

Embodiment 2

[0039] 20g of sodium alginate, 79.8g of fructose, and 0.2g of potassium carbonate were mixed evenly. Dissolve sodium alginate, glucose, and potassium carbonate in 1500g of river water, and prepare anhydrous calcium bromide into a river solution with a concentration of 1%. When using, first spray sodium alginate, glucose, and potassium carbonate solution, and then spray calcium bromide solution, sodium alginate and calcium ions are instantly cross-linked to form a hydrogel layer covering the surface of the burning object, and extinguish the fire source.

Embodiment 3

[0041] Mix 28g of sodium alginate, 71g of methyl glucoside, and 1g of sodium bicarbonate evenly. Dissolve sodium alginate, methyl glucoside and sodium bicarbonate in 2000g of groundwater and anhydrous calcium iodide to prepare a groundwater solution with a concentration of 8‰; when in use, spray sodium alginate, methyl glucoside and sodium bicarbonate solution first , and then spray calcium iodide solution, sodium alginate and calcium ions cross-link instantaneously to form a hydrogel layer covering the surface of the burning object, and extinguish the fire source.

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Abstract

The invention discloses an instant matched naturally-degradable sodium alginate hydrogel fire extinguishing agent. The instant matched naturally-degradable sodium alginate hydrogel fire extinguishingagent comprises a component A sodium alginate, a component B carbohydrate solubiliser and a component C soluble calcium salt, wherein a mass fraction ratio of the component A to the component B is 1:(2.5-6.5). When the fire extinguishing agent is used, the component A and the component B are dissolved in water, and then are sprayed on the surface of a comburent, and the component is used to prepare a 0.2-3% solution and then is sprayed on the surface of the comburent; or the above obtained two solutions are simultaneously sprayed on the surface of the comburent. The fire extinguishing agent has the following advantages: (1) the fire extinguishing agent is a powder composed of the sodium alginate, the carbohydrate solubiliser, an alkali and the soluble calcium salt, and is easy to store andtransport; (2) the fire extinguishing agent is instant in water, can be rapidly crosslinked to form a hydrogel layer in order to isolate air, also has an excellent water retention performance and strong heat insulation, flame retardation and fire extinguishing effects, and greatly reduces the water consumption during fire extinguishing; and (3) the fire extinguishing agent has the characteristicsof convenience in use, wide application range, natural degradation, greenness and environmental protection.

Description

technical field [0001] The invention belongs to the field of hydrogel fire extinguishing materials, and in particular relates to a ready-to-mix naturally degradable sodium alginate hydrogel fire extinguishing agent and a use method thereof. Background technique [0002] Fire is one of the main disasters that most frequently and commonly threatens public safety and social development. Fire extinguishing materials play an irreplaceable role in reducing casualties and property losses in fires. As the most commonly used natural fire extinguishing material, water has an excellent fire extinguishing effect, but water has strong fluidity and is difficult to attach to the surface of combustibles, which leads to the waste of a lot of water resources. [0003] Compared with conventional fire extinguishing materials, hydrogel fire extinguishing agents can effectively connect water molecules inside the polymer network, have a large water absorption capacity and a long water retention ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/00
Inventor 张凯卢宝阳朱秀凯渐南南
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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