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Preparation method for dry powder extinguishing agent moisture-proof agent

A technology of dry powder fire extinguishing agent and moisture-proof agent, applied in the field of fire-extinguishing agent, can solve the problems of shortening the service life of fire-extinguishing agent, poor moisture-proof performance, easy occurrence of agglomeration, etc. The effect of moisture absorption

Inactive Publication Date: 2018-12-18
BENGBU LONGTAI FIRE FIGHTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing dry powder fire extinguishing agent has poor moisture resistance and is prone to agglomeration, which reduces the service life of the fire extinguishing agent

Method used

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  • Preparation method for dry powder extinguishing agent moisture-proof agent
  • Preparation method for dry powder extinguishing agent moisture-proof agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method for a dry powder fire extinguishing agent moisture-proof agent, the preparation method comprises the following steps: adding a basalt suspension to a pullulan polysaccharide solution, stirring mechanically, adding an activation solution, reacting at room temperature for 50 hours, adding anhydrous Ethanol, stand for 25h, centrifuge to obtain a precipitate, wash the precipitate, freeze-dry, grind and sieve to obtain a moisture-proof agent; the activation solution is composed of acrylic acid, catalyst and dimethyl sulfoxide.

Embodiment 2

[0019] A preparation method for a dry powder fire extinguishing agent moisture-proof agent, the preparation method comprises the following steps: adding a basalt suspension to a pullulan polysaccharide solution, stirring mechanically, adding an activation solution, reacting at room temperature for 60 hours, adding anhydrous Ethanol, let stand for 30h, centrifuge to obtain a precipitate, wash the precipitate, freeze-dry, grind and sieve to obtain a moisture-proof agent; the activation solution is composed of acrylic acid, a catalyst and dimethyl sulfoxide;

[0020] Wherein, the speed of the mechanical stirring is 3500r / min, and the time is 2.5h.

Embodiment 3

[0022] A preparation method for a dry powder fire extinguishing agent moisture-proof agent, the preparation method comprises the following steps: adding a basalt suspension to a pullulan polysaccharide solution, stirring mechanically, adding an activation solution, reacting at room temperature for 55 hours, adding anhydrous Ethanol, stand for 35h, centrifuge to obtain a precipitate, wash the precipitate, freeze-dry, grind and sieve to obtain a moisture-proof agent; the activation solution is composed of acrylic acid, a catalyst and dimethyl sulfoxide;

[0023] Wherein, the speed of the mechanical stirring is 3000r / min, and the time is 2h;

[0024] The centrifugal rotating speed is 6000r / min, and the centrifugal time is 45min;

[0025] The specific operation of the washing is as follows: washing with absolute ethanol 3 times;

[0026] Described grinding and sieving is to pass 400 mesh sieves;

[0027] The weight ratio of the pullulan polysaccharide, the basalt, and the activa...

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PUM

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Abstract

The invention relates to the technical field of extinguishing agents, in particular to a preparation method for a dry powder extinguishing agent moisture-proof agent. The preparation method comprisesthe following steps of adding a graystone suspension liquid into a pullulan solution, mechanically stirring, adding into an activate fluid, reacting at the room temperature for 40 to 70h, adding absolute ethyl alcohol, standing for 20 to 40h, centrifuging to obtain a precipitate, washing the precipitate, freeze drying, grinding and sieving to obtain the moisture-proof agent, wherein the activate fluid is prepared from acrylic acid, a catalyst and dimethyl sulfoxide. The moisture-proof agent obtained through the invention has excellent moisture absorption efficiency and water retention capacity.

Description

technical field [0001] The invention relates to the technical field of fire extinguishing agents, in particular to a preparation method of a moisture-proof agent for dry powder fire extinguishing agents. Background technique [0002] Dry powder fire extinguishing agent is made of fire extinguishing base material (such as baking soda, ammonium carbonate, ammonium salt of phosphoric acid, etc.) and appropriate amount of lubricant (magnesium stearate, mica powder, talc powder, etc.) Made of fine particles, using carbon dioxide as a jet power. However, the existing dry powder fire extinguishing agent has poor moisture-proof performance, is prone to agglomeration, and reduces the service life of the fire extinguishing agent. SUMMARY OF THE INVENTION [0003] Based on the technical problems existing in the background art, the present invention proposes a preparation method of a moisture-proof agent for dry powder fire extinguishing agent. The moisture-proof agent obtained by t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/28A62D1/00
CPCA62D1/0014B01D53/28B01D2257/80
Inventor 卢思迪王伟鲁怀宁左振王哲
Owner BENGBU LONGTAI FIRE FIGHTING