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Lignin type polymer hydrogel fire extinguishing agent and preparation method thereof

A polymer hydrogel and lignin technology, which is applied in the field of lignin-type polymer hydrogel fire extinguishing agent and its preparation, can solve the problems of ineffective coverage, cooling and cooling, increased production cost of fire extinguishing agent, and poor fire extinguishing effect And other problems, achieve the effect of low price, improve adhesion ability, and improve stability

Active Publication Date: 2020-05-22
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also some disadvantages in the fire extinguishing hydrogel based on polyacrylic superabsorbent resin: when the surface that has caught fire, especially the vertical wall, the surface containing stainless steel (such as the surface of the oil tanker), due to water Vaporization at high temperature, polyacrylic acid-based superabsorbent resin is difficult to adhere to its surface, so it cannot effectively cover, cool and cool down, and the fire extinguishing effect is poor
Patent CN103483752B discloses a method of improving the poor adhesion between polymer fire extinguishing hydrogel and the surface by adding a water-based adhesion promoter of a silane coupling agent, but the silane coupling agent is expensive, which increases the production cost of the fire extinguishing agent

Method used

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  • Lignin type polymer hydrogel fire extinguishing agent and preparation method thereof
  • Lignin type polymer hydrogel fire extinguishing agent and preparation method thereof
  • Lignin type polymer hydrogel fire extinguishing agent and preparation method thereof

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preparation example Construction

[0050] The present invention also provides a preparation method of the lignin-type polymer hydrogel fire extinguishing agent described in the above technical solution, comprising: mixing superabsorbent resin, lignin-like substances and water to obtain lignin-type polymer water Gel fire extinguishing agent.

[0051] Wherein, the types, dosages and sources of the superabsorbent resin, lignin substances and water are consistent with those described in the above technical solution, and will not be repeated here.

[0052] In the present invention, the mixing temperature can be room temperature, specifically above 0°C, preferably 22-27°C. The mixing time is preferably 1-2.5 minutes. The order of mixing is preferably to first mix the superabsorbent resin and lignin substances, and then mix them with water. After uniform mixing, the hydrogel fire extinguishing agent is obtained.

[0053] The test results show that: ① In the rheological test, the storage modulus of the hydrogel incr...

Embodiment 1

[0057] 1.1 Raw materials:

[0058]

[0059] 1.2 Preparation:

[0060] At room temperature, the superabsorbent resin and the lignin substance are mixed and put into a container, and water is added and mixed for 2 minutes to obtain a hydrogel fire extinguishing agent.

Embodiment 2

[0062] 1.1 Raw materials:

[0063]

[0064] 1.2 Preparation:

[0065] At room temperature, the superabsorbent resin and the lignin substance are mixed and put into a container, and water is added and mixed for 2 minutes to obtain a hydrogel fire extinguishing agent.

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Abstract

The invention provides a lignin type polymer hydrogel fire extinguishing agent and a preparation method thereof. The lignin-type polymer hydrogel fire extinguishing agent provided by the invention comprises the following components in percentage by mass: 0.10-0.50% of super absorbent resin, and 0.05%-0.25% of a lignin substance, with the balance being water, wherein the super absorbent resin is polyacrylic acid super absorbent resin; and the lignin substance is lignin and / or a lignin derivative. The lignin substance and the super absorbent resin are combined according to a certain proportion,the stability between super absorbent resin hydrogel particles can be improved due to the existence of the lignin substance, the adhesion capacity of hydrogel to the surface of an object is improved,and then the fire extinguishing effect of the polymer hydrogel fire extinguishing agent is remarkably improved. Meanwhile, the lignin is wide in source and low in price, and the cost of the fire extinguishing agent can be reduced.

Description

technical field [0001] The invention relates to the technical field of fire extinguishing agents, in particular to a lignin-type polymer hydrogel fire extinguishing agent and a preparation method thereof. Background technique [0002] In today's social life, fire has already become a frequent disaster that threatens public safety and people's lives and property. Because water is cheap and easy to obtain, has a wide range of sources, and has a large specific heat capacity, it has a significant cooling effect on burning substances, so water has become the earliest and most commonly used fire extinguishing agent; however, due to its strong fluidity, poor adhesion, short duration, and utilization The low efficiency and other characteristics reveal its shortcomings in fire fighting. In order to make up for this deficiency, more and more people have begun to pay attention to and develop high-efficiency water-based fire extinguishing agents to improve fire extinguishing efficiency...

Claims

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Application Information

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IPC IPC(8): A62D1/00
CPCA62D1/0064
Inventor 许东华赵志刚李双双杨雪付志磊刘芳石彤非李思佳汤华清
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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