Composite material cold air colloidal sol extinguishing agent and preparation thereof

A technology of cold aerosol and composite materials, applied in the direction of fire prevention equipment, etc., can solve problems such as difficult cleaning, inability to use fire extinguishing, application site restrictions, etc., and achieve the effect of high fire extinguishing efficiency, high efficiency, and wide applicability

Active Publication Date: 2012-06-06
山东环绿康新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because this kind of fire extinguishing agent needs to be combined with oxides, it generates aerosol fire extinguishing by its own combustion. Although it does not destroy the atmospheric ozone layer, there are many inherent defects in practical application: if it has low toxicity, it can cause damage to the environment and human body; The outlet temperature is as high as 80°C, and there is a series of thermal reactions, which will damage the protection; the salt particles in the fire extinguishing agent are attached to the surface of the protection after high temperature, which is difficult to clean and corrodes the protection; it can only be used for fully submerged applications in closed spaces Fire extinguishing, it cannot be used for fire extinguishing in open spaces, and the fire extinguishing speed is slow (about 21s); because it is a fire source, it is not suitable for use in flammable and explosive places and places with people, and the application places are limited
Therefore, the current production technology at home and abroad has not been able to completely process the particle size of ammonium phosphate to the particle size required by the aerosol
[0006] 2) It is difficult to solve the problem of moisture-proof caking
Ultra-fine ammonium phosphate dry powder particles, the current silicification production process cannot completely cover it with silicone oil, the internal salt molecules absorb water through the air from the unwrapped gap, and seep out from the gap to form salt Bridge, forming agglomerates, cannot be used to extinguish the fire
[0007] 3) Difficult to extinguish class A (solid) fire

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] a) Weigh each component according to the following proportions: 100 kg of ammonium polyphosphate with a degree of polymerization n of 1000, 5 kg of multicomponent component agent, 2 kg of surface modifier, 2 kg of dispersant, and 0.2 kg of catalyst; The component agent is potassium sulfate, the surface modifier is mica, the dispersant is zeolite, and the catalyst is amino acid inorganic acid salt;

[0032] b) Mix the weighed ammonium polyphosphate, multi-component agent, dispersant and 1.2 kg of surface modifier (i.e. 60% of 2 kg weighed) in an air stream with a pressure of ≥0.5 MPa;

[0033] c) Dry at 80°C to 120°C until the moisture content is ≤0.15%;

[0034] d) Grinding the mixed material to an average particle size ≤ 5 μm;

[0035] e) Add the weighed catalyst and the remaining surface modifier (ie 0.8 kg) and mix evenly, heat treatment at 60° C. to 80° C., and pack after passing the inspection.

[0036] The composite material cold aerosol fire extinguishing agent...

Embodiment 2

[0059] Weigh each component according to the following proportions: 100 kg of ammonium polyphosphate with a degree of polymerization n of 200, 15 kg of multi-component agent, 10 kg of surface modifier, 10 kg of dispersant, and 2 kg of catalyst; among them, the multi-component Potassium chloride is selected as the agent, hydrophobic silicon dioxide is selected as the surface modifier, bentonite is selected as the dispersant, and yellow phosphorus isomers of alkyl halides are selected as the catalyst.

[0060] The rest of the preparation process is the same as in Example 1, except that the surface modifier added in the embodiment step b) is 70%, and in the step e), the surface modifier added is the remaining 30%, and the percentages here are by weight percentage.

[0061] The composite cold aerosol fire extinguishing agent prepared in this embodiment has the following characteristics:

[0062] Average particle size: ≤5μm

[0063] Powder bulk density≤0.4g / ml

[0064] Moisture ...

Embodiment 3

[0078] Weigh each component according to the following ratio: 100 kg of ammonium polyphosphate with a degree of polymerization n of 500, 7 kg of multi-component agent, 7 kg of surface modifier, 7 kg of dispersant, and 1 kg of catalyst; among them, the multi-component Ammonium sulfate is selected as the agent, talc is selected as the surface modifier, vermiculite is selected as the dispersant, and an amino acid inorganic acid salt structure is selected as the catalyst.

[0079] The rest of the preparation process is the same as in Example 1, except that the surface modifier added in the embodiment step b) is 80%, and what is added in the step e) is the remaining 20% ​​surface modifier, and the percentages here are by weight percentage.

[0080] The composite cold aerosol fire extinguishing agent prepared in this embodiment has the following characteristics:

[0081] Average particle size: ≤5μm

[0082] Powder bulk density≤0.4g / ml

[0083] Moisture content≤0.2%

[0084] Mois...

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Abstract

The invention discloses a composite cold aerosol fire extinguishing agent, comprising: 100 proportions of ammonium polyphosphate, 5 to 15 proportions of multi-element component agents, 2 to 10 proportions of surface modifier, 2 to 10 proportions of dispersant and 0.2 to 2 proportions of catalyst. The invention also discloses a method for preparing the composite cold aerosol fire extinguishing agent, comprising the following steps that: a) separate component is weighed in weight proportion; b) the weighed ammonium polyphosphate, the multi-element component agents, 60 to 80 percent of the surface modifier and the dispersant are uniformly mixed in air flow with a pressure more than or equal to 0.5 MPa; wherein, the percentage refers to weight percentage; c) the mixtures obtained in Step b are dried at the temperature ranging from 80 DEG C to 120 DEG C till the water content is less than or equal to 0.15 percent; d) the mixed material is grinded till the average particle size is less thanor equal to 5 mu m; e) after added with the catalyst, the grinded material is uniformly mixed with the margin of hydrophobic silica; after being subject to a warming treatment at the temperature ranging from 60 DEG C to 80 DEG C, the mixtures obtained are packaged after passing the inspection. The agent has very good fire extinguishing efficiency and covers wide fire extinguishing types.

Description

technical field [0001] The invention belongs to the technical field of fire extinguishing agents, and in particular relates to a cold aerosol fire extinguishing agent using ammonium polyphosphate as a base composite material and a preparation method. Background technique [0002] Halon fire extinguishing agent and its series of products have been widely used in the fire protection industry all over the world due to its high-performance fire extinguishing efficiency since its launch. Extensive use of halon fire extinguishing agent has caused the depletion of the earth's ozone layer and warmed the earth's climate, which has endangered the human ecological environment. The United Nations Environment Program (UNEP) passed the "Montreal Protocol on Substances that Deplete the Ozone Layer" in September 1987, stipulating that ozone-depleting substances such as halon fire extinguishing agents should be phased out within a time limit. The Chinese government stipulates that the use o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D1/02A62D1/00
Inventor 宋明韬秦盼朱恒斌
Owner 山东环绿康新材料科技有限公司
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