Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polymer anion exchange membrane and preparation method thereof

A technology of anion exchange membrane and polymer membrane, which is applied in the field of polymer anion exchange membrane and its preparation, can solve the problems of poor thermal and chemical stability, poor stability and poor stability of anion exchange membrane, and achieve Improve alkali resistance and chemical stability, low requirements for equipment and reaction conditions, good chemical stability and thermal stability

Active Publication Date: 2018-10-19
LIXIN COUNTY YURUO INFORMATION TECH CO LTD
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional anion exchange membranes are mostly made of quaternary ammonium salt polymers. This kind of material must go through the step of chloromethylation when introducing ion exchange groups in the preparation process, and the process of chloromethylation requires the use of severe Toxic carcinogen chloromethyl ether, and also need to use a large amount of organic solvents and initiators, which is a major hazard to environmental protection and human health, and is not conducive to cost saving
On the other hand, this traditional anion exchange membrane has poor thermal and chemical stability
The quaternary ammonium group has poor stability in alkaline solution at a higher temperature, and the quaternary ammonium group in the anion exchange membrane is easily degraded, resulting in a shortened service life of the anion exchange membrane and poor stability in normal working conditions
In addition, due to the selection of the matrix material and the anion exchange treatment process, the ion exchange capacity of this type of anion exchange membrane is not high.

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
  • Polymer anion exchange membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing a polymer anion exchange membrane includes the following steps:

[0028] 1) Preparation of polymerizable monomer: Dissolve 15 g of 4,4'-bis(9-ethyl-3-carbazole vinyl)-1,1'-biphenyl and 10 g of 4-vinylbenzyl chloride in 50 g of tetrahydrofuran In, the reaction was stirred at room temperature for 6 hours, and then the solvent was removed by rotary evaporation to obtain a polymerizable monomer;

[0029] 2) Preparation of polymer film: 10 g of polymerizable monomers prepared in step 1), 10 g of bistrimethylsilyl vinyl phosphate, 10 g of butyl methacrylate, and dodecyl benzene sulfonic acid 0.2g of sodium was mixed uniformly, ultrasonicated for 10 minutes, then dropped on a glass plate, placed in a radiation field under a nitrogen atmosphere, and irradiated with α rays for 35 minutes, polymerization reaction occurred to obtain a polymer film;

[0030] 3) Ion exchange: 10g of the polymer membrane prepared in step 2) is soaked in 800g of potassium hydroxide so...

Embodiment 2

[0035] A method for preparing a polymer anion exchange membrane includes the following steps:

[0036] 1) Preparation of polymerizable monomer: Dissolve 17 g of 4,4'-bis(9-ethyl-3-carbazole vinyl)-1,1'-biphenyl and 10 g of 4-vinylbenzyl chloride in 65 g of tetrahydrofuran In, the reaction was stirred at room temperature for 6.5 hours, and then the solvent was removed by rotary evaporation to obtain a polymerizable monomer;

[0037] 2) Preparation of polymer film: 13g of polymerizable monomer prepared in step 1), 10g of bistrimethylsilyl vinyl phosphate, 12g of butyl methacrylate, and polyoxypropylene polyvinyl glycerol ether 0.3g is mixed uniformly, ultrasonicated for 12 minutes, then dropped on a glass plate, placed in a radiation field under a helium atmosphere, and irradiated with β rays for 39 minutes, polymerization reaction occurs to obtain a polymer film;

[0038] 3) Ion exchange: 10g of the polymer membrane prepared in step 2) is soaked in 950g of potassium hydroxide solutio...

Embodiment 3

[0043] A method for preparing a polymer anion exchange membrane includes the following steps:

[0044] 1) Preparation of polymerizable monomer: Dissolve 18 g of 4,4'-bis(9-ethyl-3-carbazole vinyl)-1,1'-biphenyl and 10 g of 4-vinylbenzyl chloride in 75 g of tetrahydrofuran In, the reaction was stirred at room temperature for 7 hours, and then the solvent was removed by rotary evaporation to obtain a polymerizable monomer;

[0045] 2) Preparation of polymer film: 15g of polymerizable monomer prepared in step 1), 10g of bistrimethylsilyl vinyl phosphate, 14g of butyl methacrylate, and nonylphenol polyoxyethylene ether 0.3g is mixed uniformly, ultrasonicated for 13 minutes, then dropped on a glass plate, placed in a radiation field under a neon atmosphere, irradiated with gamma rays for 40 minutes, polymerization reaction occurs to obtain a polymer film;

[0046] 3) Ion exchange: 10g of the polymer membrane prepared in step 2) is soaked in 1000g of potassium hydroxide solution with a ma...

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 provides a preparation method of a polymer anion exchange membrane, and the preparation method comprises the following steps: a) preparation of a polymerizable monomer, (2) radiation polymerization of the polymerizable monomer, bis(trimethylsilyl) vinyl phosphonate, Butyl Methacrylate and an emulsifier to prepare a polymer membrane, and 3) ion exchange. The invention also discloses the polymer anion exchange membrane prepared according to the preparation method of the polymer anion exchange membrane, a vanadium battery using the polymer anion exchange membrane as an electrolyte membrane, and a basic anion exchange membrane fuel cell using the polymer anion exchange membrane as a polyelectrolyte membrane. The polymer anion exchange membrane prepared by the method is cheaper than a traditional quaternary ammonium salt anion exchange membrane in the prior art, and has better mechanical properties, chemical stability and thermal stability, and higher ion conductivity.

Description

Technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polymer anion exchange membrane and a preparation method thereof. Background technique [0002] In recent years, anion exchange membranes have been widely used in industrial fields such as water treatment, hydrometallurgy, chemical separation, and alkaline fuel cells and vanadium batteries. Its performance directly affects the development of the industry. The widespread use of anion exchange membranes is conducive to solving the energy crisis and environmental problems that restrict social development. Therefore, the development of anion exchange membranes with excellent comprehensive performance has become a hot spot in the industry. [0003] Traditional anion exchange membranes are mostly made of quaternary ammonium salt type polymers. This material must undergo a chloromethylation step when ion exchange groups are introduced during the preparation process, and the chlor...

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): C08J5/22C08J7/12C08F226/12C08F214/14C08F271/02C08F230/08C08F220/18C08F2/26C08F2/30H01M8/1018H01M8/18C08L51/00
CPCH01M8/1018H01M8/188C08F2/26C08F2/30C08F226/12C08F271/02C08J5/2231C08J7/12C08J2351/00C08F214/14C08F220/1804C08F230/08Y02E60/50Y02P70/50
Inventor 不公告发明人
Owner LIXIN COUNTY YURUO INFORMATION TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com