Preparation method of microcapsule fire extinguishing agent taking 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 the problems such as microencapsulation, and achieve the effects of suppressing or extinguishing fire, safe use and high fire extinguishing efficiency

Active Publication Date: 2020-04-28
NANJING NORMAL UNIVERSITY +1
View PDF12 Cites 10 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of microcapsule fire extinguishing agent taking whey protein isolate/anionic polysaccharide as wall material
  • Preparation method of microcapsule fire extinguishing agent taking whey protein isolate/anionic polysaccharide as wall material

Examples

Experimental program
Comparison scheme
Effect test

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 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a preparation method of a microcapsule fire extinguishing agent. The preparation method comprises the following steps: (1) respectively preparing a whey protein isolate solution and an anionic polysaccharide solution; (2) adding an alkyl halide liquid fire extinguishing agent into the whey protein isolate aqueous solution, adding an emulsifier for emulsification, and then adding the anionic polysaccharide aqueous solution to form an emulsion; (3) adding an acid into the emulsion to adjust the pH value of the system to be below the isoelectric point of whey protein isolate, stirring for reaction, then slowly reducing the temperature of the system to be below 5 DEG C, adding an alkali to adjust the pH value of the system to be alkaline, and adding a curing agent for curing reaction to form wet microcapsules; and (4) carrying out centrifugal separation, and drying the obtained wet microcapsules to obtain solid powder microcapsules. According to the invention, the whey protein isolate and anionic polysaccharide are used as wall materials to coat a volatile liquid fire extinguishing agent, and a core material is retained to the maximum extent, so that the loadingcapacity of the prepared fire extinguishing agent microcapsule is improved, and higher fire extinguishing efficiency is achieved.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap