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Novel polymer proton exchange membrane and preparation method thereof

A proton and exchange membrane technology, which is applied in the field of proton exchange membrane preparation for new direct methanol fuel cells, can solve the problems of cumbersome synthesis process conditions of crosslinking agents, etc., and achieve good proton conductivity, thermal stability and tensile strength improvement , the effect of improving the service life

Active Publication Date: 2012-12-26
四川天策聚材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After cross-linking, the alcohol resistance and dimensional stability of SPEEK are improved, and there is no two-phase separation phenomenon, but the synthesis process conditions of the cross-linking agent are cumbersome and involve post-treatment of a large amount of organic solvents

Method used

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  • Novel polymer proton exchange membrane and preparation method thereof
  • Novel polymer proton exchange membrane and preparation method thereof
  • Novel polymer proton exchange membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Dissolve 100 parts of sulfonated polyether ether ketone with a degree of sulfonation of 80% in 100 parts of N,N-dimethylacetamide. After the sulfonated polyether ether ketone is completely dissolved, add 5 parts of styrene and 1 part of dimethicone. Vinylbenzene, stirring at a speed of 150 rpm, to make the reaction solution evenly mixed; the temperature was raised to 65 ° C, and after the temperature was constant, 0.5 part of azodiethylheptonitrile was dissolved in 10 parts of N,N-dimethylacetamide, and added instantly In the reaction solution, the constant temperature and constant speed reaction was continued for 5h; after the reaction was completed, the temperature was lowered, the reaction solution was poured into the mold, and the solvent was removed to obtain a sulfonated polyetheretherketone / polystyrene-divinylbenzene polymerization with a semi-interpenetrating network structure Substance exchange membrane. The semi-interpenetrating network polymer proton exchange...

Embodiment 2

[0041] Dissolve 100 parts of sulfonated polyether ether ketone with a sulfonation degree of 55% in 300 parts of N-methylpyrrolidone, after the sulfonated polyether ether ketone is completely dissolved, add 15 parts of styrene and 10 parts of divinylbenzene, Stir the reaction solution at a stirring speed of 700 rpm to make the reaction solution evenly mixed; the temperature is raised to 85°C and after the temperature is constant, 1 part of benzoyl peroxide is dissolved in 15 parts of N-methylpyrrolidone, and added dropwise to the reaction solution within 0.5h . After the initiator solution was added dropwise, the reaction was continued at constant temperature and constant speed for 5 hours, the temperature was lowered, the reaction solution was poured into the mold, and the solvent was removed to obtain a sulfonated polyetheretherketone / polystyrene-divinylbenzene with a semi-interpenetrating network structure Polymer proton exchange membrane. The semi-interpenetrating network ...

Embodiment 3

[0043] Dissolve 100 parts of sulfonated polyether ether ketone with a sulfonation degree of 30% in 500 parts of dimethyl sulfoxide. After the sulfonated polyether ether ketone is completely dissolved, add 20 parts of styrene and 2 parts of divinylbenzene, Stir the reaction liquid at a stirring speed of 400 rpm, and mix the reaction liquid evenly; the temperature is raised to 80 ° C, and after the temperature is constant, 2 parts of dimethyl azobisisobutyrate are dissolved in 20 parts of dimethyl sulfoxide, and added dropwise within 0.5 h into the reaction solution. After the initiator solution was added dropwise, the reaction was continued at a constant temperature and constant speed for 2 hours, then the temperature was lowered, the reaction solution was poured into the mold, and the solvent was removed to obtain a sulfonated polyetheretherketone / polystyrene-divinylbenzene with a semi-interpenetrating network structure Polymer proton exchange membrane. The semi-interpenetrat...

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Abstract

The invention discloses a semi-interpenetrating network sulfonated polyether ether ketone / polystyrene-divinylbenzene proton exchange membrane and a preparation method thereof. The proton exchange membrane is formed by 100 parts of sulfonated polyether ether ketone and 6-60 parts of styrene-divinylbenzene cross-linked polymer, wherein the sulfonation degree of the sulfonated polyether ether ketone is 30-95 percent, and the sulfonated polyether ether ketone has favorable proton conduction capacity; and the styrene-divinylbenzene cross-linked polymer forms cross-linked network type structure. The invention also discloses the preparation method of the proton exchange membrane. Due to the existence of the cross-linked network type structure in the proton exchange membrane, the dimensional stability, the hydrolytic resistance, the methanol resistance and the like of the proton exchange membrane can be greatly improved. The in situ polymerization semi-interpenetrating network structure proton exchange membrane has excellent hydrolytic resistance, methanol resistance, mechanical property and thermal stability performance, and has favorable application prospect in direct-methanol fuel cells.

Description

technical field [0001] The invention relates to a novel sulfonated polyetheretherketone / polystyrene-divinylbenzene polymer proton exchange membrane with a semi-interpenetrating network structure and a preparation method thereof, belonging to the field of preparation of novel direct methanol fuel cell proton exchange membranes. Background technique [0002] Direct methanol fuel cell (DMFC) is an electrochemical device that directly converts chemical energy in methanol and oxidants into electrical energy. It has high energy conversion efficiency, environmental friendliness, high specific energy (relative to batteries), With the characteristics of low operating temperature and fast startup, it can be widely used in automobiles, power stations, mobile power supplies and other fields. Polymer electrolyte membrane is the core component of DMFC, which plays the role of separating fuel and oxidant, conducting ions and insulating electrons, and has always been a hot spot in the field...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/08C08L25/08C08F212/08C08F212/36H01M8/10
CPCY02E60/521Y02E60/523Y02E60/522Y02E60/50
Inventor 李云涛赵春霞王立彬
Owner 四川天策聚材科技有限公司
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