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Sulfonated aromatic polymer/side chain aromatic polymer containing sulfonimide group blended ion exchange membrane, its preparation method and application

A technology of sulfonimide-based aromatic and aromatic polymers, which is applied in the field of sulfonated aromatic polymers/side chain-containing sulfonimide-based aromatic polymer blended ion exchange membranes, can solve the problems that are rarely studied Report and other issues, to achieve the effect of improving proton conductivity, good application prospects, and superior performance

Active Publication Date: 2014-10-08
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, aromatic polymers containing sulfonimide side chains are very promising as ion-exchange membranes, but few studies have been reported on them.

Method used

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  • Sulfonated aromatic polymer/side chain aromatic polymer containing sulfonimide group blended ion exchange membrane, its preparation method and application
  • Sulfonated aromatic polymer/side chain aromatic polymer containing sulfonimide group blended ion exchange membrane, its preparation method and application
  • Sulfonated aromatic polymer/side chain aromatic polymer containing sulfonimide group blended ion exchange membrane, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In this example, the ion exchange membrane is based on polyetheretherketone containing p-toluenesulfonimide groups in the side chain, and sulfonated polyether ether ketone is blended in it to form sulfonated polyether ether ketone / side chain containing polyetheretherketone P-toluenesulfonimide-based polyether ether ketone blended ion exchange membrane, wherein, in terms of mass percentage, sulfonated polyetheretherketone accounts for the side chain-containing p-toluenesulfonimide-based polyether ether ketone 5%~200%. The preparation method of the above-mentioned sulfonated polyetheretherketone / polyetheretherketone containing p-toluenesulfonimide group in the side chain blended ion exchange membrane comprises the following steps:

[0025] Step 1: Take 4.0g of polyetheretherketone containing p-toluenesulfonimide groups in the side chain and dissolve it in 16.0g of N,N-dimethylacetamide to form a side chain containing p-toluene with a mass percentage of 20%. N,N-dimethyla...

Embodiment 2

[0029]In this example, the ion exchange membrane is based on polyetheretherketone containing p-toluenesulfonimide groups in the side chain, and sulfonated perfluoroether-based polysulfone is blended in it to form sulfonated perfluoroether-based polysulfone / Side chain containing p-toluenesulfonimide based polyether ether ketone blended ion exchange membrane, wherein, in terms of mass percentage, sulfonated perfluoroether based polysulfone accounts for the side chain containing p-toluenesulfonimide 5%~200% of PEEK-based.

[0030] The preparation method of the above-mentioned sulfonated perfluoroether-based polysulfone / polyetheretherketone blended ion-exchange membrane containing p-toluenesulfonimide group in the side chain comprises the following steps:

[0031] Step 1: Take 4.0g of polyether ether ketone containing p-toluenesulfonimide groups in the side chain and dissolve it in 16.0g of dimethyl sulfoxide to form a side chain containing p-toluenesulfonimide group with a mass...

Embodiment 3

[0035] In this example, the ion-exchange membrane is based on polyethersulfone containing perfluorobutylsulfonimide groups in the side chain, and sulfonated polyethersulfone is blended in it to form sulfonated polyethersulfone / perfluorobutane-containing side chain. A sulfonimide-based polyethersulfone blended ion exchange membrane, wherein, in terms of mass percentage, the sulfonated polyethersulfone accounts for 5% to 200% of the side chain-containing polyethersulfone containing perfluorobutylsulfonimide groups.

[0036] The preparation method of the above-mentioned sulfonated polyethersulfone / side chain polyethersulfone containing perfluorobutylsulfonimide group blended ion exchange membrane comprises the following steps:

[0037] Step 1: Polyethersulfone undergoes sulfonation reaction, acyl chloride reaction and substitution reaction successively to obtain polyethersulfone containing perfluorobutylsulfonimide groups in the side chain;

[0038] Step 2: Take 4.0 g of the poly...

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Abstract

The invention provides an ion exchange membrane with a novel structure. The ion exchange membrane takes a side-chain sulfimide-group-containing aromatic polymer as a matrix, and through blending the matrix with a sulfonated aromatic polymer, a sulfonated aromatic polymer / side-chain sulfimide-group-containing aromatic polymer blended ion exchange membrane is formed. Through the synergistic effect of the sulfonated aromatic polymer, the blended ion exchange membrane effectively improves the electric conductivity of a matrix ion exchange membrane while ensuring that the ion exchange membrane has good mechanical properties and lower methanol permeability, therefore, compared with the traditional aromatic polymer ion exchange membrane, the ion exchange membrane provided by the invention is a composite ion exchange membrane material with more excellent properties, and can be used as a new energy material. The ion exchange membrane has good application prospects in the technical fields of fuel cells, electrolysis preparation devices, chlorine-alkali industry, electrodialysis, chemical catalysis, gas separation and the like.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a sulfonated aromatic polymer / side chain aromatic polymer containing sulfonimide groups blended ion exchange membrane, its preparation and application. The composite membrane has the advantages of high electrical conductivity, strong ion selectivity, high mechanical strength, etc., and can be applied to fields such as fuel cells, solution preparation devices, chlor-alkali industry, electrodialysis, chemical catalysis, sewage treatment, and seawater desalination. Background technique [0002] Proton exchange membrane fuel cell is a new type of energy conversion device with outstanding advantages such as high energy conversion efficiency, high energy density, clean and pollution-free. Uninterruptible power supply for power supply systems and electronic equipment can also be used as emergency power supplies for military, medical, entertainment, etc., so the application p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/16C08L81/06C08L65/00C08L81/02C08L71/00C08L71/10C08L71/12C08L79/04C08L77/00C08L79/08C08J5/22
Inventor 陶慷章勤薛立新石倩茹聂锋
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI