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A preparation method of microcapsule fire extinguishing agent using whey protein isolate/anionic polysaccharide as wall material

A technology of whey protein isolate and anionic polysaccharide, which is applied in the direction of fire prevention equipment, can solve problems such as microencapsulation, and achieve the effects of suppressing or extinguishing fire, stable chemical properties, and good stability

Active Publication Date: 2021-06-01
NANJING NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the microencapsulation of the haloalkane liquid fire extinguishing agent of low boiling point still has not solved at present

Method used

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  • A preparation method of microcapsule fire extinguishing agent using whey protein isolate/anionic polysaccharide as wall material
  • A preparation method of microcapsule fire extinguishing agent using whey protein isolate/anionic polysaccharide as wall material

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Embodiment 1

[0028] A whey protein isolate, anionic polysaccharide coated low-boiling point liquid fire extinguishing agent, and a method for preparing fire extinguishing agent microcapsules, comprising the following steps:

[0029] (1) Configuration of the wall material solution: respectively configure a whey protein isolate aqueous solution with a concentration of 2%, and an aqueous gum arabic solution with a concentration of 2%;

[0030] (2) Preparation of emulsion: Measure 50ml of 2% whey protein isolate solution in a three-necked flask, weigh 0.24g of Span80 and 2ml of tetrafluorodibromoethane, mix and stir, then slowly drop into the three-necked flask solution at room temperature Stir homogeneously, the rotation speed is 3000r / min, the emulsification time is 18min, continue to add 50ml of 2% gum arabic solution, and mix and stir for 10min to form a stable and uniform emulsion.

[0031] (3) Formation of microcapsules: Slowly add 10% glacial acetic acid solution dropwise to the system ...

Embodiment 2

[0034] A whey protein isolate, anionic polysaccharide coated low-boiling point liquid fire extinguishing agent, and a method for preparing fire extinguishing agent microcapsules, comprising the following steps:

[0035] (1) Configuration of the wall material solution: respectively configure a whey protein isolate aqueous solution with a concentration of 2%, and an aqueous carrageenan solution with a concentration of 2%;

[0036] (2) Preparation of emulsion: Measure 50ml of 2% whey protein isolate solution in a three-necked flask, weigh 0.24gspan80 and 2ml of tetrafluorodibromoethane, mix and stir, slowly add it dropwise to the three-necked flask solution at room temperature Stir homogeneously at high speed with a rotation speed of 3000r / min and an emulsification time of 18 minutes. Continue to add 50ml of 2% carrageenan solution and mix and stir for 10 minutes to form a stable emulsion.

[0037] (3) Formation of microcapsules: Slowly add 10% glacial acetic acid solution dropwi...

Embodiment 3

[0040] A whey protein isolate, anionic polysaccharide coated low-boiling point liquid fire extinguishing agent, and a method for preparing fire extinguishing agent microcapsules, comprising the following steps:

[0041] (1) Configuration of the wall material solution: respectively configure a whey protein isolate aqueous solution with a concentration of 2%, and an aqueous gum arabic solution with a concentration of 1%;

[0042] (2) Preparation of emulsion: Measure 50ml of 2% whey protein isolate solution in a three-necked flask, weigh 0.13gspan80 and 1.5ml of trifluorotrichloroethane, mix and stir, then slowly drop into the three-necked flask solution at room temperature Under high-speed homogeneous stirring, the rotation speed is 3000r / min, and the emulsification time is 18min. After the end, add 50ml of 2% gum arabic solution, and mix and stir for 10min to form a stable emulsion.

[0043](3) Formation of microcapsules: Slowly add 10% glacial acetic acid solution dropwise to ...

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Abstract

The invention discloses a preparation method of a microcapsule fire extinguishing agent, comprising the following steps: (1) separately preparing a whey protein isolate solution and an anionic polysaccharide solution; (2) taking a haloalkane liquid fire extinguishing agent and adding it to the whey protein isolate aqueous solution and add an emulsifier to emulsify, then add an anionic polysaccharide aqueous solution to form an emulsion; (3) add acid to the above emulsion to adjust the pH of the system to below the isoelectric point of whey protein isolate, stir the reaction, and then slowly reduce the temperature of the system to Below 5°C, add alkali to adjust the pH of the system to alkaline, add a curing agent to solidify and react to form wet microcapsules; (4) centrifuge and dry the obtained wet microcapsules to obtain solid powder microcapsules. The invention uses whey protein isolate and anionic polysaccharide as wall materials to coat the volatile liquid fire extinguishing agent, retains the core material to the greatest extent, increases the loading capacity of the prepared fire extinguishing agent microcapsules, and thus achieves higher fire extinguishing efficiency.

Description

technical field [0001] The invention relates to a preparation method of a microcapsule fire extinguishing agent, belonging to the technical field of fire extinguishing agents. Background technique [0002] Haloalkane liquid fire extinguishing agent has the advantages of high fire extinguishing efficiency, non-conductivity, stable chemical properties, and no pollution or damage to the victim. It is a widely used fire extinguishing agent. At present, haloalkane liquid fire extinguishing agent is mainly stored in the pressure container bottle in liquid state when used. Due to the low vapor pressure, the distribution performance is poor when sprayed, and the best effect of the fire extinguishing agent cannot be exerted. Moreover, there are many accessories and bulky. Jetting requires high pressure, which is not easy to move and carry. Therefore, the application of haloalkane liquid fire extinguishing agent is also limited. [0003] Through microcapsule technology, the fire ext...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D1/00
CPCA62D1/0021
Inventor 马振叶武艳林军何根升张莹莹
Owner NANJING NORMAL UNIVERSITY
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