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2-acrylamido-2-methylpropyl sulfonic acid-based proton exchange membrane and preparation method thereof

A methylpropanesulfonic acid, proton exchange membrane technology, applied in fuel cells, electrochemical generators, electrical components, etc., can solve the problems of poor dimensional stability and low mechanical strength of proton exchange membranes

Inactive Publication Date: 2018-09-11
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a proton exchange membrane based on 2-acrylamide-2-methylpropanesulfonic acid and its preparation method in order to solve the problems of poor dimensional stability and low mechanical strength of existing proton exchange membranes

Method used

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  • 2-acrylamido-2-methylpropyl sulfonic acid-based proton exchange membrane and preparation method thereof

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preparation example Construction

[0023] The present invention firstly provides a kind of preparation method based on 2-acrylamide-2-methylpropanesulfonic acid proton exchange membrane, comprises the following steps:

[0024] Step 1: first prepare acrylonitrile-styrene-2-acrylamide-2-methylpropanesulfonic acid (AN-St-AMPS) terpolymer by solution polymerization;

[0025] Step 2: The acrylonitrile-styrene-2-acrylamide-2-methylpropanesulfonic acid terpolymer obtained in step 1 is formed into a film by solution casting method to obtain a 2-acrylamide-2-methyl propanesulfonic acid proton exchange membrane.

[0026] According to the present invention, acrylonitrile-styrene-2-acrylamide-2-methylpropanesulfonic acid (AN-St-AMPS) terpolymer is prepared by solution polymerization first, specifically: 2-acrylamide-2- Put methylpropanesulfonic acid into the reaction container, add solvent to dissolve, the solvent is not particularly limited, preferably dimethyl sulfoxide; then add acrylonitrile and styrene monomer, heat ...

Embodiment 1

[0042] First, add 4g of 2-acrylamide-2-methylpropanesulfonic acid into the three-necked flask, add 80g of dimethyl sulfoxide, and place the three-necked flask in an oil bath, heat and stir to dissolve it, and then add 10.67g of Acrylonitrile and 5.33g styrene monomer, blow nitrogen for 30min to exclude oxygen, heat up to 60°C in a water bath, continue magnetic stirring, condense and reflux, finally add 0.022g AIBN to initiate the reaction, and continue the reaction for 8h to obtain AN-St-20% AMPS terpolymer;

[0043] Cast the obtained polymer solution (viscosity 54Pa·S) on a clean and dry glass plate to form a film, and dry it in a vacuum oven at 60°C for 24 hours to obtain the AN-St-20% AMPS proton exchange membrane.

Embodiment 2

[0045] First, add 6g of 2-acrylamide-2-methylpropanesulfonic acid into the three-necked flask, add 80g of dimethyl sulfoxide, and place the three-necked flask in an oil bath, heat and stir to dissolve it, and then add 9.33g of Acrylonitrile and 4.67g styrene monomer, blow nitrogen for 30min to exclude oxygen, heat up to 60°C in a water bath, continue magnetic stirring, condense and reflux, finally add 0.022g AIBN to initiate the reaction, and continue the reaction for 8h to obtain AN-St-30% AMPS terpolymer;

[0046] Cast the obtained polymer solution (viscosity of 60 Pa·S) on a clean and dry glass plate to form a film, and dry it in a vacuum oven at 60°C for 24 hours to obtain the AN-St-30% AMPS proton exchange membrane.

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Abstract

The invention provides a 2-acrylamido-2-methylpropyl sulfonic acid-based proton exchange membrane and a preparation method thereof, and belongs to the field of proton exchange membrane fuel cells. According to the preparation method, through solution polymerization, an acrylonitrile-styrene-2-acrylamido-2-methylpropyl sulfonic acid terpolymer is prepared; solution casting is conducted on the acrylonitrile-styrene-2-acrylamido-2-methylpropyl sulfonic acid terpolymer for film forming to prepare the 2-acrylamido-2-methylpropyl sulfonic acid proton exchange membrane. The invention further providesthe 2-acrylamido-2-methylpropyl sulfonic acid proton exchange membrane obtained through the preparation method. The proton exchange membrane has high size stability and good mechanical performance.

Description

technical field [0001] The invention relates to the field of proton exchange membrane fuel cells, in particular to a proton exchange membrane based on 2-acrylamide-2-methylpropanesulfonic acid and a preparation method thereof. Background technique [0002] A fuel cell is a clean, efficient, and low-pollution power generation device, and its core component is a proton exchange membrane, which has become a research hotspot in recent years. The proton exchange membrane has the dual functions of conducting protons and separating the negative and positive poles, and its performance directly affects the performance of the fuel cell. At present, the commonly used proton exchange membrane in the world is the perfluorosulfonic acid type proton exchange membrane produced by DuPont Company of the United States, such as Nafion membrane. This type of membrane material has the advantages of good proton conduction performance, high stability, and long life, but at the same time has the di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1027H01M8/1072
CPCH01M8/1027H01M8/1072Y02E60/50
Inventor 孙树林吴洪秀吕雪
Owner CHANGCHUN UNIV OF TECH
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