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

1, 3, 4-oxadiazole ring containing poly (aromatic ether sulfone) medium-high temperature proton exchange membrane and preparation method thereof

A technology of proton exchange membrane and polyaryl ether sulfone is applied in the field of high molecular polymer proton exchange membrane and its preparation, which can solve the problems of decreased conductivity, long preparation time, uncontrollable degree of sulfonation, etc., and achieve accurate degree of sulfonation. Controllable, simple preparation method, and anti-shedding effect

Inactive Publication Date: 2013-12-04
CHANGCHUN UNIV OF TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a proton exchange membrane containing 1,3,4-oxadiazole ring in order to solve the problem that the conductivity of the existing proton exchange membrane is dehydrated at high temperature and the conductivity is reduced, and the preparation time is long and the degree of sulfonation is uncontrollable. Sulfonated polyarylethersulfone mid-high temperature proton exchange membrane and preparation method thereof

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
  • 1, 3, 4-oxadiazole ring containing poly (aromatic ether sulfone) medium-high temperature proton exchange membrane and preparation method thereof
  • 1, 3, 4-oxadiazole ring containing poly (aromatic ether sulfone) medium-high temperature proton exchange membrane and preparation method thereof
  • 1, 3, 4-oxadiazole ring containing poly (aromatic ether sulfone) medium-high temperature proton exchange membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Under the protection of an inert gas, 2.80g of 4-fluorobenzoic acid, 1.30g of hydrazine sulfate and 50g of polyphosphoric acid were added to the reactor to form a mixture. The mixture was reacted at 150°C for 4h, then heated to 200°C for 3h to obtain a white needle Product fluorine-terminated monomer, add 1.23g 2,5-2(4-fluorophenyl)-1,3,4-oxadiazole, 0.59g 3,3'-sodium disulfonate-4 , 4'-difluorodiphenyl sulfone, 1.37g bisphenol A, K 2 CO 3 As a salt-forming agent, the mixture of 6ml N-methylpyrrolidone and 6ml N-cyclohexylpyrrolidone is used as a solvent, 10ml of toluene is used as a water-carrying agent, and the solid content is 30%. Carry water at 130°C for 4 hours, then distill the toluene, and the temperature rises to 190 React at ℃ for 20 hours to get the reaction product, pour the product into acetone to precipitate, filter, wash with water and dry at 60℃ for 24 hours, dissolve the pure polymer in NMP to get a polymer solution, put the polymer solution on a clean...

Embodiment 2

[0035]Under the protection of an inert gas, 5.60g of 4-fluorobenzoic acid, 2.60g of hydrazine sulfate and 80g of polyphosphoric acid were added to the reactor to form a mixture. The mixture was reacted at 160°C for 6h, and then heated to 200°C for 2h to obtain white needles. Product fluorine-terminated monomer, add 1.80g 2,5-2(4-fluorophenyl)-1,3,4-oxadiazole, 1.47g 3,3'-sodium disulfonate-4 , 4'-difluorodiphenyl sulfone, 2.28g bisphenol A, K 2 CO 3 As a salt-forming agent, a mixture of 5.25ml N-methylpyrrolidone and 5.25ml N-cyclohexylpyrrolidone is used as a solvent, 10ml of toluene is used as a water-carrying agent, and the solid content is 30%. Carry water at 130°C for 4 hours, then distill the toluene, and the temperature rises React at 190°C for 25 hours to obtain the reaction product, pour the product into acetone to precipitate, filter, wash with water, and dry at 60°C for 24 hours, dissolve the pure polymer in NMP to obtain a polymer solution, put the polymer solutio...

Embodiment 3

[0039] Under the protection of an inert gas, 8.40g of 4-fluorobenzoic acid, 3.90g of hydrazine sulfate and 120g of polyphosphoric acid were added to the reactor to form a mixture. The mixture was reacted at 150°C for 6h and then heated to 200°C for 3h to obtain a white needle Product fluorine-terminated monomer, add 0.93g 2,5-2(4-fluorophenyl)-1,3,4-oxadiazole, 1.18g 3,3'-sodium disulfonate-4 , 4'-difluorodiphenyl sulfone, 1.37g bisphenol A, K 2 CO 3 As a salt-forming agent, a mixture of 5.8ml N-methylpyrrolidone and 5.8ml N-cyclohexylpyrrolidone is used as a solvent, 10ml of toluene is used as a water-carrying agent, and the solid content is 30%. Carry water at 130°C for 4 hours, then distill the toluene, and the temperature rises React at 180°C for 30 hours to obtain a reaction product, which is poured into acetone to precipitate, filtered, washed with water, and dried at 60°C for 24 hours, and the pure polymer is dissolved in NMP to obtain a polymer solution, which is plac...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
electrical conductivityaaaaaaaaaa
Degree of sulfonationaaaaaaaaaa
Login to View More

Abstract

The invention provides a 1, 3, 4-oxadiazole ring containing poly (aromatic ether sulfone) medium-high temperature proton exchange membrane and a preparation method thereof and belongs to the field of high molecular polymer proton exchange membranes and preparation methods thereof. The problems that the conductivity is reduced and the sulfonated degree is uncontrollable caused by water loss under the high temperature in existing proton exchange membranes are solved. The proton exchange membrane is prepared by the steps that sulfonated monomers, bisphenol monomers, potassium carbonate and fluorine end group monomers are subjected to reacting under the temperature of 170 DEG C to 200 DEG C for 10 to 40 hours, pure products are obtained after filtration and drying, the pure products are dissolved in an organic solvent to obtain a polymer solution, the polymer solution is subjected to film casting to form a film, the film is subjected to demolding in water, and the film is placed in a hydrochloric acid solution to be subjected to proton exchange for 12 to 24 hours. The proton exchange membrane is 20 to 100mu m in thickness, the sulfonated degree is 40% to 140%, and the proton conductivity is (3.2*10-2) to (8.8*10-2) S / cm at the temperature of 120 DEG C. The preparation method is simple, the sulfonated time is shortened, and the sulfonated degree is controllable.

Description

technical field [0001] The invention belongs to the field of high-molecular polymer proton exchange membranes and preparation methods thereof, in particular to high-temperature proton exchange membranes in polyarylethersulfone containing 1,3,4-oxadiazole rings and preparation methods thereof. Background technique [0002] As a high-tech product battery in the 21st century, fuel cells bring hope to the dream of renewable resources pursued by human beings. Proton exchange membrane fuel cells are considered to be a new generation of efficient, environmentally friendly, and pollution-free clean energy. As an important part of proton exchange membrane fuel cell, the development of proton exchange membrane directly affects the application and development of fuel cell. At present, the perfluorosulfonic acid proton exchange membrane is the most widely used, and the most representative one is the Nafion membrane of Du Pond Company. Its advantages such as high proton conductivity, goo...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C08L81/06C08G75/23C08J5/22H01M8/02H01M2/16
CPCY02E60/12Y02E60/50
Inventor 王哲任春丽任飞程海龙徐晶美白洪伟
Owner CHANGCHUN UNIV OF TECH
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