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Absorbent polymer extinguishing agent preparation method

A technology of water-absorbing resin and fire extinguishing agent, which is applied in the direction of fire prevention equipment, etc., and can solve problems such as the timing of adding initiators and crosslinking agents

Inactive Publication Date: 2011-08-31
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] On the basis of the existing preparation method of water-absorbent resin, the present invention firstly optimizes the ratio of initiator, crosslinking agent and monomer; secondly, solves the timing of adding initiator and crosslinking agent in the reaction process, and provides a Preparation method of water-absorbing resin fire extinguishing agent

Method used

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preparation example Construction

[0048] Implement the preparation method of above-mentioned a kind of water-absorbing resin fire extinguishing agent, the prepared water-absorbing resin fire extinguishing agent, carried out the test of the water absorption ratio, water absorption rate and water retention rate of resin as follows:

[0049] Determination of water absorption ratio:

[0050] Accurately weigh 0.2g dry sample of water-absorbent resin in a beaker, add a certain mass of M 0 After standing for 30 minutes, filter the water-absorbing resin with a 200-mesh sampling sieve, let the water-absorbing resin stand on the sampling sieve for a period of time, until the water-absorbing resin is anhydrous and filter out, and then weigh the filtered water quality M 1 .

[0051]

[0052] The measured water absorption rate is 1000g / g

[0053] Determination of water absorption rate:

[0054] Accurately weigh 0.2g dry sample of water-absorbent resin into a beaker, add a certain quality of distilled water, let it st...

Embodiment 1

[0063] Implement the preparation method of a kind of water-absorbing resin fire extinguishing agent of the present invention, this method is carried out according to the following steps:

[0064] (1) Place a beaker containing 8 parts of acrylic acid solution in an ice-water bath, then add 30% sodium hydroxide solution into the acrylic acid solution, stir until the precipitate disappears, and then obtain acrylic acid neutralizing solution, which is ready for use ;

[0065] (2) Put the reactor into a water bath, then add 20ml of distilled water into the reactor, heat it to about 50°C, then add 1 part of carboxymethyl cellulose (CMC) into the reactor, stir and gelatinize for about 15min Until carboxymethyl cellulose is in the form of a gel;

[0066] (3) Continuously feed nitrogen into the reactor, then add potassium persulfate with a mass of 0.05 parts as an initiator, and initiate the reaction for about 10 minutes;

[0067] (4) Add an acrylic acid solution with a neutralizatio...

Embodiment 2

[0074] Implement the preparation method of a kind of water-absorbing resin fire extinguishing agent of the present invention, this method comprises the following steps:

[0075] (1) Place a beaker containing 10 parts of acrylic acid solution in an ice-water bath, then add a 30% sodium hydroxide solution into the acrylic acid solution, stir until the precipitate disappears, and obtain acrylic acid neutralization solution, which is ready for use ;

[0076] (2) Put the reactor into a water bath, then add 20ml of distilled water into the reactor, heat it to about 60°C, then add 2 parts of carboxymethyl cellulose (CMC) into the reactor, stir and gelatinize for about 18min Until carboxymethyl cellulose is in the form of a gel;

[0077](3) Continuously feed nitrogen into the reactor, then add potassium persulfate with a mass of 0.10 parts as an initiator, and initiate the reaction for about 20 minutes;

[0078] (4) Add an acrylic acid solution with a neutralization degree of about ...

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Abstract

The invention relates to a absorbent polymer extinguishing agent preparation method comprising following steps: putting acrylic acid solution in ice-water bath, adding 30 wt% sodium hydroxide solution in acrylic acid solution and stirring, then putting into the water-bath, adding 20ml distilled water and heating, adding 1-3 parts of carboxymethyl cellulose and stirring the product until be gelatiniform; feeding nitrogen and adding 0.05-0.20 parts of potassium persulphate, after the reaction, adding acrylic acid solution with neutralization degree of 65%-90% and 2-5 parts of 2-acrylamide-2-methylpropanesulfonic acid and having reaction with 0-2 parts of acrylonitrile solution; adding N, N'-methylenebisacrylamide which is 0.01-0.04 parts in monomer mass fraction as cross-linking agent and having reaction with inorganic salt for 1.5h-2.5h; the product being washed twice by ethanol and distilled water, being dried, crushed and mixed with 500-2000 times of water, then the absorbent polymerextinguishing agent is prepared. The invention optimizes the amount and the adding opportunity of the initiator and the cross-linking agent and also improves water absorption efficiency and fire extinguishing effect of the product.

Description

technical field [0001] The present invention relates to a kind of preparation method of polymer water-absorbing resin, specifically a kind of is that one is made of carboxymethyl cellulose (CMC), acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid (AMPS) as monomers The invention relates to a method for preparing a water-absorbing resin fire extinguishing agent which can effectively suppress the dispersion of fire and extinguish fire after the water-absorbing resin made by grafting and cross-linking is mixed with water. Background technique [0002] Because the water-absorbent resin contains strong hydrophilic groups such as carboxyl, hydroxyl, sulfonic acid and amido groups and has a certain degree of cross-linking, it can hydrate with water and absorb water hundreds or even thousands of times its own mass. , which has a certain fire extinguishing performance. The synthesis method of water-absorbent resin mainly has two ways according to the raw materials: one is to...

Claims

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Application Information

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IPC IPC(8): A62D1/00C08F251/02C08F220/06C08F220/58C08F220/38C08F220/48
Inventor 申峻常宏宏邓卫波冯晓琦吴娟寇子明
Owner TAIYUAN UNIV OF TECH
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