A kind of sulfonamide aromatic polymer, its preparation method and application

An aromatic polymer and sulfonamidation technology, applied in electrochemical generators, fuel cells, electrical components, etc., can solve the problems of enhanced water absorption of ion membranes, weak ion conductivity, and poor chemical stability, etc., to achieve Easy handling, simple composition, enhanced barrier properties

Active Publication Date: 2018-05-04
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the traditional aromatic ion exchange membranes are obtained by sulfonation of aromatic resins. Because the conductive groups of this resin are benzenesulfonate groups with weak acidity, the ion conductivity is weak at low sulfonation degree. Large surface resistance
However, improving the conductivity by increasing the degree of sulfonation will increase the water absorption of the ionic membrane, deteriorate the chemical stability, increase the swelling rate, and even dissolve in water.

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
  • A kind of sulfonamide aromatic polymer, its preparation method and application
  • A kind of sulfonamide aromatic polymer, its preparation method and application
  • A kind of sulfonamide aromatic polymer, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] In this embodiment, the sulfonamidated polyaromatic polymer is a polymer with polyether ether ketone as its main chain and benzenesulfonamide groups as its side chains. The polymer uses polyether ether ketone as raw material, sulfuric acid as sulfonation reagent, thionyl chloride as acyl chloride reagent, liquid ammonia as amidation reagent, and is prepared through reactions such as acyl chloride and amidation.

[0040] Concrete preparation method comprises the following steps:

[0041] Step 1: In a 50ml three-neck flask, add 20ml of concentrated sulfuric acid with a concentration of 98% by mass, then stir and add 1g of polyether ether ketone resin powder, heat up to 40°C, and perform sulfonation reaction for 12h; after the reaction, pour the reaction product into ice water, the resin is precipitated, and fully washed with deionized water to obtain sulfonated polyether ether ketone resin.

[0042] Step 2: Add the sulfonated polyether ether ketone resin obtained in step...

Embodiment 2

[0049] In this embodiment, the sulfonamidated polyaromatic polymer is a polymer with polysulfone as its main chain and benzenesulfonamide groups as its side chains. The polymer is prepared by taking polysulfone as raw material, chlorosulfonic acid as sulfonating reagent and acyl chloride reagent, ammonia as amidation reagent, and is prepared through reactions such as acyl chloride and amidation.

[0050] Concrete preparation method comprises the following steps:

[0051] Step 1: In a 50ml three-neck flask, add 20ml of dichloromethane, then stir and add 1g of polysulfone resin particles, after dissolving, slowly drop in 3ml of chlorosulfonic acid dissolved in 10ml of dichloromethane, and put it in an ice-water bath React for 3 hours; after the reaction, pour the reaction product into ice water to precipitate the resin, wash it thoroughly with deionized water, and freeze-dry to obtain the sulfonyl chloride polysulfone resin.

[0052] Step 2: Put the sulfonyl chloride polysulfon...

Embodiment 3

[0058] In this embodiment, the sulfonamidated polyaromatic polymer is a polymer with polyether ether ketone as its main chain and benzenesulfonamide groups as its side chains. The polymer uses polyether ether ketone as raw material, fuming sulfuric acid as sulfonation reagent, phosphorus oxychloride as acyl chloride reagent, ammonia water as amidation reagent, and is prepared through sulfonation, acyl chloride, amidation and other reactions.

[0059] Concrete preparation method comprises the following steps:

[0060] Step 1: In a 50ml three-neck flask, add 20ml of concentrated sulfuric acid with a concentration of 98% by mass, then stir and add 1g of polyetheretherketone resin powder, slowly add 5ml of oleum dropwise, and react for 2 hours; pour the reaction product into ice water , the resin is precipitated, and the resin is fully washed with deionized water to obtain a sulfonated polyether ether ketone resin.

[0061] Step 2: Add the sulfonated polyetheretherketone resin ob...

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
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention provides a sulfonamidated aromatic polymer. The polymer has an aromatic polymer as the main chain, and the side chain contains sulfonamide groups. Since the sulfonamide group is hydrophobic, can dissociate to provide protons at high temperature, and can carry out cross-linking reactions with groups such as acid chloride, sulfonyl chloride, and phosphorus oxychloride, the sulfonamide aromatic polymer has excellent properties when used as a film material. Good barrier properties, electrical conductivity, and mechanical strength have good application prospects in various fields such as fuel cells, liquid flow batteries, electrodialysis, and solid acid catalysts.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a sulfonamidated aromatic polymer and a preparation method thereof. The resin can be made into a diaphragm and applied to liquid flow batteries, methanol fuel cells, hydrogen fuel cells, electrodialysis, lithium Ion secondary batteries and other fields. Background technique [0002] As a widely used high-performance material, ion-exchange membrane materials play an important role in the fields of chlor-alkali, new energy, and water treatment. The application range is wider and wider, and the demand is increasing. Homogeneous proton exchange membrane materials occupy an increasingly important position in ion exchange membranes because of their uniform and dense film formation, high electrical conductivity, and good isolation performance. [0003] At present, there are two kinds of homogeneous ion exchange membranes widely used, one is the perfluorosulfonic acid membrane...

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): C08G8/28C08G8/02C08G75/20C08J5/22H01M8/0239H01M2/16H01M50/423
CPCY02E60/50
Inventor 薛立新聂锋秦德君陆地
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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