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Preparation method of high-efficiency D type dry powder extinguishing agent

A dry powder fire extinguishing agent and high-efficiency technology, used in fire protection equipment and other directions, can solve the problems of slow fire extinguishing speed, small application area, easy to produce re-ignition and other problems, and achieve the effect of fast fire extinguishing speed, small limitation and easy preservation.

Inactive Publication Date: 2018-02-16
JIANGSHAN HAIWEI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, Class D dry powder fire extinguishing agents are generally divided into two categories, one is the special type, which is only suitable for certain or certain types of metal fires, and the applicable area is small, but it often has high fire extinguishing efficiency
The second is the general-purpose type, which has a wide range of applications, but there are problems in fire extinguishing speed, anti-resurgence, anti-caking, etc., especially after fire extinguishing, resurgence is easy to occur, and the site is difficult to clean up
New fire extinguishing agents represented by ultra-fine dry powder fire extinguishing agents have been used to protect them, and the effect has been improved, but the defects of slow fire extinguishing speed, low efficiency, and large demand for fire extinguishing materials have not been fundamentally resolved, and can only be used in some areas. Class D fires cannot be universally used for fighting Class D fires, and have great limitations

Method used

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  • Preparation method of high-efficiency D type dry powder extinguishing agent

Examples

Experimental program
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Effect test

Embodiment 1

[0019] By weight, 15 parts of silicon dioxide, 60 parts of ammonium polyphosphate, 18 parts of modified sodium chloride, 0.3 part of stearic acid, 0.4 part of 4-bromo-B, B-difluorostyrene, (penta 0.03 part of (n-propylcyclopentadiene) zirconium dichloride, 0.02 part of tetrakis(trimethylsilyloxy)titanium, 0.2 part of starch, and mix the above raw materials evenly. Dry, cross-link, and solidify in a drying oven at 80°C to obtain the required fire extinguishing agent, product number M-1.

Embodiment 2

[0021] By weight, 20 parts of silicate, 70 parts of ammonium polyphosphate, 20 parts of modified potassium chloride, 0.4 part of sodium stearate, 0.5 part of 4-bromo-B, B-difluorostyrene, (five 0.05 part of methylcyclopentadiene) (n-propylcyclopentadiene) zirconium dichloride, 0.05 part of tetrakis(trimethylsiloxy)titanium, and 0.3 part of cellulose, and mix the above raw materials evenly. Dry, cross-link and solidify in a drying oven at 90°C to obtain the required fire extinguishing agent, product number M-2.

Embodiment 3

[0023] By weight, 10 parts of expanded graphite, 50 parts of ammonium polyphosphate, 15 parts of modified calcium carbonate, 0.2 part of calcium stearate, 0.1 part of 4-bromo-B, B-difluorostyrene, (pentamethyl 0.01 part of cyclopentadiene)(n-propylcyclopentadiene)zirconium dichloride, 0.01 part of tetrakis(trimethylsilyloxy)titanium, and 0.1 part of pentaerythritol, and the above raw materials were mixed uniformly. Dry, cross-link, and solidify in a drying oven at 70°C to obtain the required fire extinguishing agent, product number M-3.

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Abstract

The invention provides a preparation method of a high-efficiency D type dry powder extinguishing agent. The preparation method comprises the following steps of: uniformly mixing 10-20 parts by weightof a blocking agent, 50-70 parts by weight of high ammonium polyphosphate, 15-20 parts of filler, 0.2-0.4 part of a stabilizer, 0.1-0.5 part of 4-bromo-B,B-difluoro styrene, 0.01-0.05 part by weight of (pentamethyl cyclopentadiene)(n-propylcyclopentadiene) zirconium dichloride, 0.01-0.05 part of tetra(trimethyl siloxy) titanium and 0.1-0.3 part by weight of a catalyst; and drying, crosslinking andcuring the raw materials to prepare the needed extinguishing agent.

Description

technical field [0001] The invention relates to a method for producing a fire extinguishing agent, in particular to a method for preparing a high-efficiency Class D dry powder fire extinguishing agent. Background technique [0002] Class D fire refers to metal fire, usually potassium, sodium, magnesium, lithium and aluminum-magnesium alloy fire. It is highly toxic, easy to chain explosion, easy to cause a large number of casualties, and it is quite difficult to extinguish. For Class D fires, because these metals are highly reactive, they are prone to violent reactions with oxygen and nitrogen in the air at room temperature, and release a large amount of heat, which is prone to spontaneous combustion and self-explosion. Water and CO2 cannot achieve the purpose of fire extinguishing, but will increase the degree of reaction , to make the fire bigger, and the dry powder fire extinguishing agent commonly used in China cannot achieve the purpose of extinguishing metal fires. Tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/00
CPCA62D1/0014
Inventor 刘立忠
Owner JIANGSHAN HAIWEI TECH
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