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Perfluorohexanone fire extinguishing capsule and preparation method thereof

A perfluorohexanone and capsule technology, which is applied in the direction of microcapsule preparation, fire prevention equipment, microsphere preparation, etc., can solve the problems of small loading capacity of microencapsulation, difficult fire source coverage, difficult curing and loading of perfluorohexanone, etc. Achieve the effect of large loading capacity and stable preparation process

Active Publication Date: 2021-03-05
BEIJING ZHONGRUIHE ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first object of the present invention is to provide a perfluorohexanone fire extinguishing capsule, which solves the problems in the prior art that perfluorohexanone is difficult to solidify and load, the loading of microencapsulation is small, and it is difficult to form a fire source coverage when extinguishing a fire

Method used

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  • Perfluorohexanone fire extinguishing capsule and preparation method thereof
  • Perfluorohexanone fire extinguishing capsule and preparation method thereof
  • Perfluorohexanone fire extinguishing capsule and preparation method thereof

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preparation example Construction

[0022] A kind of preparation method of perfluorohexanone fire extinguishing capsule of the present invention, specifically implement according to the following steps:

[0023] Step 1, weighing and mixing perfluorohexanone: micropowder silica gel: β-cyclodextrin: water according to the mass ratio of 1:1-1.6:0.05-0.08:0.01-0.03 to form a solid capsule core;

[0024] Step 2, weighing and mixing the acrylic resin No. IV and ethanol according to the mass ratio of 1:5-28 to form a uniform and stable solution to obtain a capsule material solution;

[0025] Step 3, immersing the capsule core material prepared in step 1 in the capsule material liquid prepared in step 2 for 1-3 seconds, taking out to obtain the capsule precursor;

[0026] Step 4, immersing the precursor prepared in step 3 in water for 1-20 seconds to harden to obtain the perfluorohexanone fire extinguishing capsule.

[0027] In the present invention, β-cyclodextrin can be replaced by starch, dextrin, α-cyclodextrin or ...

Embodiment 1

[0041] Step 1, mix perfluorohexanone: micropowder silica gel: β-cyclodextrin: water according to the mass ratio of 1:1:0.05:0.01 to form a solid capsule core;

[0042] Step 2: Mix acrylic resin No. IV with ethanol at a ratio of 1:5 to form a uniform and stable solution to obtain a capsule material solution;

[0043] Step 3, immersing the capsule core material prepared in step 1 in the capsule material liquid prepared in step 2 for 1 second, and taking out to obtain the capsule precursor;

[0044] Step 4, immerse the precursor prepared in step 3 in water for 1 second to harden, and obtain perfluorohexanone fire extinguishing capsules.

[0045] The mass percentage of capsule core and capsule shell is 98.8%: 1.2%, and the capsule size is 0.3cm 3 .

Embodiment 2

[0047] Step 1, mix perfluorohexanone: micropowder silica gel: β-cyclodextrin: water according to the mass ratio of 1:1.6:0.08:0.03 to form a solid capsule core;

[0048] Step 2: Mix acrylic resin No. Ⅳ with ethanol 1:28 to form a uniform and stable solution to obtain a capsule material solution;

[0049] Step 3, immersing the capsule core material prepared in step 1 in the capsule material liquid prepared in step 2 for 3 seconds, and taking out to obtain the capsule precursor;

[0050] Step 4, immerse the precursor prepared in step 3 in water for 20 seconds to harden, and obtain perfluorohexanone fire extinguishing capsules.

[0051] The mass percentage of capsule core and capsule shell is 98.2%: 1.8%, and the capsule size is 1.2cm 3 .

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Abstract

The invention discloses a perfluorohexanone fire extinguishing capsule and a preparation method thereof. The perfluorohexanone fire extinguishing capsule is composed of the following components in percentage by mass: 98.2-98.8% of a capsule core and 1.2-1.8% of a capsule shell, wherein the sum of the mass percentages of the above components is 100%. The capsule core consists of the following components: perfluorohexanone, aerosil, beta-cyclodextrin and water in a mass ratio of 1: (1-1.6): (0.05-0.08): (0.01-0.03). The capsule shell is obtained by drying a capsule wall material solution, and the capsule wall material solution consists of acrylic resin No. IV and ethanol in a mass ratio of 1: (5-28). According to the fire extinguishing capsule, liquid perfluorohexanone is effectively converted into solid for loading; the preparation process of the fire extinguishing capsule is stable; and the loading capacity of perfluorohexanone is large. When the fire extinguishing capsule is to be used, high dispersion of perfluorohexanone can be formed by throwing the fire extinguishing capsule into a fire source, so the fire extinguishing effect of multi-point coverage is achieved, and flame retardance is formed. The fire extinguishing capsule can effectively cope with various types of fire disasters such as solid, liquid and gaseous fire disasters.

Description

technical field [0001] The invention belongs to the technical field of fire extinguishing agent application, relates to a perfluorohexanone fire extinguishing capsule, and also relates to a preparation method of the fire extinguishing capsule. Background technique [0002] The fluorinated ketone compound perfluorohexanone has attracted much attention for its environmental protection and endothermic vaporization for fire extinguishing. Perfluorohexanone is a liquid under normal conditions, with a boiling point of 49°C. It can be quickly vaporized and volatilized at room temperature, making it difficult to store and apply. Perfluorohexanone is prepared as microcapsules, embedded in polymer materials, and formed into a solid shape. It is a good curing and application solution. [0003] However, due to the fluidity and rapid volatility of perfluorohexanone, it is difficult to form a high coverage of the fire source, and it is often necessary to add multi-point injection devices...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/00B01J13/20
CPCA62D1/0021B01J13/206
Inventor 沈文敖芬宁远兰
Owner BEIJING ZHONGRUIHE ELECTRICAL
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