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Cooling type superfine dry powder extinguishing agent, preparation method and fire extinguishing equipment of cooling type superfine dry powder extinguishing agent

A fire extinguishing agent and powder technology, applied in fire protection equipment and other directions, can solve the problems of not giving full play to the cooling performance of water, hindering the application of E-type or lithium battery fires, etc., to improve safety, prevent fire re-ignition, and improve utilization. Effect

Pending Publication Date: 2022-06-24
INST OF ADVANCED TECH UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high fluidity of water, it is difficult to stay on the surface of combustibles, and the water that actually plays a cooling role is less than 20%. Due to the high temperature of the fire scene, the water has not reached the combustion zone and has been vaporized, so the cooling performance of the water cannot be fully exerted, which hinders its application in Class E or lithium battery fires

Method used

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  • Cooling type superfine dry powder extinguishing agent, preparation method and fire extinguishing equipment of cooling type superfine dry powder extinguishing agent
  • Cooling type superfine dry powder extinguishing agent, preparation method and fire extinguishing equipment of cooling type superfine dry powder extinguishing agent
  • Cooling type superfine dry powder extinguishing agent, preparation method and fire extinguishing equipment of cooling type superfine dry powder extinguishing agent

Examples

Experimental program
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Effect test

preparation example Construction

[0048] In addition, the present invention also provides a preparation method of the above fire extinguishing agent, such as figure 1 As shown, the preparation method of the fire extinguishing agent includes:

[0049] Step S10: after mixing the hydrophobic silica, water and a binder, assembling into the composite material particles;

[0050] Step S20 : ​​mixing a plurality of the composite material particles with the hydrophobic ammonium polyphosphate powder, so that a plurality of the composite material particles are uniformly dispersed in the hydrophobic ammonium polyphosphate powder to form the composite material, and the obtained composite material is obtained. Extinguishing agent. By adopting the above steps, a fire extinguishing agent with good fire extinguishing effect can be prepared, the operation is simple, the production cost is low, and the fire extinguishing agent is suitable for mass production and popularization.

[0051] Step S10 includes:

[0052] Step S101:...

Embodiment 1～6

[0072] Embodiments 1 to 6 respectively provide a cooling type superfine dry powder fire extinguishing agent, the specific components are a composite material and a hydrophobic ammonium polyphosphate powder formed by a plurality of micron-sized hydrophobic ammonium polyphosphate particles, and the composite material is dispersed in A plurality of micron-sized composite material particles in the hydrophobic ammonium polyphosphate powder are composed together, each composite material particle includes an inner core layer and a coating layer, and the coating layer covers at least a part of the surface of at least the inner core layer, wherein the coating layer is composed of multiple layers. Hydrophobic nano-silica (purchased from Aladdin fumed silica CAS: 112945-52-5) is composed together, and the inner core layer includes gel water. In Examples 1 to 6, the parts by weight of the hydrophobic ammonium polyphosphate powder and the composite material are shown in Table 1.

[0073] T...

Embodiment 7～12

[0083] Embodiments 7 to 12 respectively provide a kind of fire extinguishing equipment, and its specific manufacturing method is as follows:

[0084] The fire extinguishing agent cooling type ultra-fine dry powder fire extinguishing agent prepared in Examples 1-6 was respectively filled into a general-purpose portable fire-extinguishing steel cylinder, and the cylinder was sealed after filling with nitrogen at 1.2 MPa to obtain fire-extinguishing equipment, wherein the fire-extinguishing equipment of Examples 7-12 The corresponding filling extinguishing agent cooling type ultra-fine dry powder extinguishing agent is shown in Table 3.

[0085] Table 3 Extinguishing agent cooling type ultra-fine dry powder fire extinguishing agent corresponding to the fire extinguishing equipment of Examples 7-12

[0086] fire fighting equipment Extinguishing agent cooling type ultra-fine dry powder fire extinguishing agent Example 7 Example 1 Example 8 Example 2 E...

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Abstract

The invention provides a cooling type superfine dry powder extinguishing agent, a preparation method and extinguishing equipment of the cooling type superfine dry powder extinguishing agent. The cooling type superfine dry powder extinguishing agent comprises 70-90 parts of hydrophobic ammonium polyphosphate powder and 10-30 parts of composite materials, and the extinguishing agent is jointly composed of composite material particles dispersed in the hydrophobic ammonium polyphosphate powder; the composite material particles comprise an inner core layer and a coating layer, the coating layer covers at least one part of the surface of the inner core layer, the coating layer comprises hydrophobic nano silicon dioxide, and the inner core layer comprises water. The cooling type superfine dry powder fire extinguishing agent is reasonable in overall component, proportion and structural design, high in fire extinguishing efficiency, good in cooling performance, non-toxic and harmless, free of secondary pollution, insulated, easy to clean after fire extinguishing, simple in preparation process, easy and convenient to operate, low in production cost and suitable for mass production, popularization and application.

Description

technical field [0001] The invention belongs to the field of fire extinguishing agent materials, and particularly relates to a cooling type ultrafine dry powder fire extinguishing agent, a preparation method and fire extinguishing equipment thereof. Background technique [0002] In GA 578-2005 "Superfine Dry Powder Fire Extinguishing Agents", superfine dry powder fire extinguishing agents are defined as solid powders with 90% particle size less than or equal to 20um. Ultrafine dry powder fire extinguishing agents are mainly divided into ABC and BC. The main component of ABC ultrafine dry powder fire extinguishing agent is ammonium phosphate, which can put out A, B, C, E fires. The main component of BC superfine dry powder fire extinguishing agent is sodium bicarbonate, which can put out B, C and E fires. The fire extinguishing mechanism of ultra-fine dry powder fire extinguishing agent is mainly chemical inhibition, followed by suffocation. Combustion is a chain reaction ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/00A62D1/06
CPCA62D1/0014A62D1/06
Inventor 张和平付阳阳陆松
Owner INST OF ADVANCED TECH UNIV OF SCI & TECH OF CHINA
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