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Composite superfine powder fire extinguishing agent and preparation method thereof

A technology of ultra-fine powder and fire extinguishing agent, which is applied in the direction of fire prevention equipment, etc., can solve the problems of fire extinguishing performance, small specific surface area, poor water repellency, etc., and achieve the effect of enhanced coating effect, good dispersion and less agglomeration

Inactive Publication Date: 2019-11-01
TIANJIN CHENGJIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, commercially available common dry powder fire extinguishing agents are widely used in various places due to their low environmental toxicity and good fire extinguishing performance. Poor, easy to reunite, so its fire extinguishing performance is affected
The traditional dry powder fire extinguishing agent mainly uses ammonium dihydrogen phosphate as the main raw material. Although it has a wide range of applications, the price is relatively high

Method used

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  • Composite superfine powder fire extinguishing agent and preparation method thereof
  • Composite superfine powder fire extinguishing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) With 45g magnesium hydroxide, 35g aluminum hydroxide, 20g ammonium dihydrogen phosphate, 4g talcum powder, 2g mica powder, the white carbon black of 4g, 3g active clay, 0.7g magnesium stearate, mix, then will Add 2.4g of its silicone oil into the ball milling tank together, put it into a 60°C thermostat for 30 minutes (make the temperature of the ball milling pot and the base material rise to 60°C for easy coating), and then add 40g of isopropanol;

[0039] (2) Put the mixed base material into a ball mill and stir for 30 minutes;

[0040] (3) Place the stirred base material in an incubator for constant temperature coating for one hour;

[0041] (4) put base material into ball mill and grind for 120min; (wet grinding)

[0042] (5) Finally, take out the ground slurry base material and place it in a vacuum drying oven for drying (at 90°C, take it out and stir every 30 minutes), so that the isopropanol is completely volatilized (the pungent smell disappears), and the c...

Embodiment 2

[0045] (1) With 45g magnesium hydroxide, 20g aluminum hydroxide, 35g ammonium dihydrogen phosphate, 4g talcum powder, 2g mica powder, the white carbon black of 4g, 3g active clay, 0.7g magnesium stearate, mix, then will It is added to the ball mill tank together with 2.4g of modifier dispersion liquid, i.e. silicone oil, and placed in a 60°C incubator for 30 minutes (to raise the temperature of the ball mill pot and the base material to 60°C for easy coating), and then add 45g of isopropanol;

[0046] (2) Put the mixed base material into a ball mill and stir for 30 minutes;

[0047] (3) Place the stirred base material in an incubator for constant temperature coating for one hour;

[0048] (4) put base material into ball mill and grind for 120min; (wet grinding)

[0049] (5) Finally, take out the ground slurry base material and place it in a vacuum drying oven for drying (at 90°C, take it out and stir every 30 minutes), so that the isopropanol is completely volatilized (the pu...

Embodiment 3

[0052] (1) With 40g magnesium hydroxide, 35g aluminum hydroxide, 25g ammonium dihydrogen phosphate, 4g talcum powder, 2g mica powder, the white carbon black of 4g, 3g active clay, 0.7g magnesium stearate, mix, then will It is added to the ball mill tank together with the modifier dispersion liquid, i.e. silicone oil 2.4g, placed in a 60°C incubator for 30 minutes (to raise the temperature of the ball mill pot and the base material to 60°C for easy coating), and then add 50g of isopropanol;

[0053] (2) Put the mixed base material into a ball mill and stir for 30 minutes;

[0054] (3) Place the stirred base material in an incubator for constant temperature coating for one hour;

[0055] (4) put base material into ball mill and grind for 120min; (wet grinding)

[0056](5) Finally, take out the ground slurry base material and place it in a vacuum drying oven for drying (at 90°C, take it out and stir every 30 minutes), so that the isopropanol is completely volatilized (the pungen...

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Abstract

The invention relates to a composite superfine powder fire extinguishing agent which comprises 30-40% of magnesium hydroxide, 20-30% of aluminum hydroxide, 20-30% of ammonium dihydrogen phosphate, 4-6% of talcum powder, 2-3% of mica powder, 4-5% of white carbon black, 3-4% of activated clay, 2-3% of hydrogen-containing silicon oil and 1-1.5% of magnesium stearate. The preparation method comprisesthe following steps: uniformly mixing the substances so as to obtain a base material; and performing ball milling stirring, heat preservation, wet milling, drying and ball milling crushing on the mixed base material in a ball mill, so as to obtain the composite superfine powder fire extinguishing agent. As the amounts of the magnesium hydroxide and the aluminum hydroxide in the dry powder fire extinguishing agent are increased, and the magnesium hydroxide and the aluminum hydroxide have the advantages of being simple in preparation process, rich in raw material source, low in cost, free of equipment corrosion, and the like, the composite superfine powder fire extinguishing agent has wide application prospects and market potential.

Description

technical field [0001] The invention belongs to the field of fire extinguishing agents, and in particular relates to a composite ultrafine powder fire extinguishing agent and a preparation method thereof. Background technique [0002] At present, commercially available common dry powder fire extinguishing agents are widely used in various places due to their low environmental toxicity and good fire extinguishing performance. Poor, easy to reunite, so its fire extinguishing performance is affected. The traditional dry powder fire extinguishing agent mainly uses ammonium dihydrogen phosphate as the main raw material. Although it has a wide range of applications, its price is relatively high. [0003] Therefore, the dry powder fire extinguishing agent with low preparation cost and smaller particle size is a technical problem to be solved at present. Contents of the invention [0004] The object of the present invention is to provide a kind of compound type superfine powder ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/00
CPCA62D1/0014
Inventor 赵国敏徐广吉靳双何发龙
Owner TIANJIN CHENGJIAN UNIV
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