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A kind of polyaryl ether sulfone ketone proton exchange membrane material containing polysulfonic acid structure in side chain and preparation method thereof

A polyarylether sulfone ketone and proton exchange membrane technology, applied in fuel cells, electrochemical generators, electrical components, etc., can solve problems such as poor dimensional stability, complicated preparation process, and low ion transmission rate, and achieve good dimensional stability properties and ionic conductivity, and the effect of a simple preparation method

Active Publication Date: 2018-02-02
山东星顺新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The patent of the invention aims to improve the shortcomings of aromatic sulfonated polymer proton exchange membrane materials such as poor dimensional stability, low ion transmission rate, and complicated preparation process, and provides a class of side chain polyaryl ether sulfone ketone protons containing polysulfonic acid structures Exchange membrane material; by introducing sulfonic acid ion groups to the side group benzene ring, and introducing multiple sulfonic acid ion groups into the same structural unit, the performance of the polymer membrane can be effectively improved. This type of polyarylethersulfone Ketones can be used as proton exchange membrane materials and have potential applications in fuel cells

Method used

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  • A kind of polyaryl ether sulfone ketone proton exchange membrane material containing polysulfonic acid structure in side chain and preparation method thereof
  • A kind of polyaryl ether sulfone ketone proton exchange membrane material containing polysulfonic acid structure in side chain and preparation method thereof
  • A kind of polyaryl ether sulfone ketone proton exchange membrane material containing polysulfonic acid structure in side chain and preparation method thereof

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Effect test

Embodiment 1

[0022] (1) Preparation of polyarylether sulfone ketone with 4-phenoxybenzene side group structure

[0023] In a 100ml dry three-necked flask equipped with mechanical stirring, nitrogen protection and a water trap, add 1.0632g (1.8mmol) of 3,3'-bis(phenoxyphenyl)-4,4'-difluorobis Phenylsulfone (take ionized structural unit content x=0.18 as an example), 2.0849g (8.2mmol) of 4,4'-difluorodiphenylsulfone, 2.1422g (10mmol) of 4,4'-dihydroxybenzophenone Ketone, 1.3821g (10mmol) of potassium carbonate, 11ml of N-methylpyrrolidone and 5ml of toluene, after azeotropic dehydration at 130°C for 3h, further heated up to 160°C for co-condensation reaction for 10h, to end the reaction, pour the reaction solution into further filtering and washing in ethanol to obtain a polyarylether sulfone ketone polymer containing a 4-phenoxybenzene side group structure, with a yield of 99%; 1 H NMR (CDCl 3 ,400MHz) as attached figure 1 shown.

[0024] (2) Preparation of polyaryl ether sulfone ketone...

Embodiment 2

[0027] (1) Preparation of polyarylether sulfone ketone with 4-phenoxybenzene side group structure

[0028] In a 100ml dry three-necked flask equipped with mechanical stirring, nitrogen protection and a water trap, add 1.0632g (1.8mmol) of 3,3'-bis(phenoxyphenyl)-4,4'-difluorobis Phenylsulfone (take ionized structural unit content x=0.18 as an example), 2.0849g (8.2mmol) of 4,4'-difluorodiphenylsulfone, 2.1422g (10mmol) of 4,4'-dihydroxybenzophenone Ketone, 1.3821g (10mmol) of potassium carbonate, 18ml of N-methylpyrrolidone and 6ml of toluene, after azeotropic dehydration at 150°C for 1h, further heated up to 170°C for co-condensation reaction for 6h, to end the reaction, pour the reaction solution into In ethanol, a polyaryl ether sulfone ketone polymer containing a 4-phenoxybenzene side group structure was obtained with a yield of 99%.

[0029] (2) Preparation of polyaryl ether sulfone ketone proton exchange membrane material containing polysulfonic acid structure

[0030]...

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Abstract

The invention provides a proton exchange membrane material prepared from polyarylether sulfone ketone with a side chain containing a polysulfonic acid structure and a preparation method for the material. The preparation method comprises the steps of firstly performing copolycondensation on an active difluorosulfone monomer containing a 4-phenoxyphenyl side group structure, 4,4'-difluorodiphenyl sulfone and 4,4'-dihydroxy benaophenonel to prepare polyarylether sulfone ketone containing the 4-phenoxyphenyl side group structure, and further by utilizing concentrated sulfuric acid as a sulfonating agent, performing sulfonation under the relatively mild reaction condition to prepare the proton exchange membrane material prepared from polyarylether sulfone ketone with the side chain containing the polysulfonic acid structure. Aromatic polyarylether sulfone ketone with the side chain containing the polysulfonic acid structure is simple in preparation process and has excellent membrane forming property; and a prepared polymer membrane has high size stability and ionic conductance, and can serve as the proton exchange membrane material for a fuel cell.

Description

technical field [0001] The invention belongs to the field of polymer proton exchange membranes and their preparation, in particular to a class of polyaryl ether sulfone ketone proton exchange membrane materials with side chains containing polysulfonic acid structures and a preparation method thereof. Background technique [0002] Proton exchange membrane fuel cell is a clean new energy with high energy density, high efficiency and environmental friendliness. As a key part, proton exchange membrane plays the role of transporting protons and blocking fuel and oxidant. At present, the commercial proton exchange membrane material is mainly the perfluorosulfonic acid membrane Nafion produced by DuPont Company of the United States. This membrane material has good chemical stability and proton conductivity, but its disadvantages such as high cost and high fuel permeability limit its commercial use. application. For this reason, researchers at home and abroad are actively developin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/1027H01M8/1072C08G75/23
CPCC08G75/23H01M8/1027H01M8/1072Y02E60/50
Inventor 汪称意沈斌徐常赵晓燕李坚任强
Owner 山东星顺新材料有限公司