Sulfonated polyaryl ether sulfone copolymer containing pyridine group, preparation method and application

A technology for sulfonating polyarylethersulfone and pyridine groups, which is used in electrochemical generators, fuel cells, electrical components, etc., can solve the problem that the water content of proton conductivity cannot meet the requirements of use, mechanical properties decline, and service life is reduced. problem, to achieve the effect of good application prospects, high antioxidant stability, and low methanol permeability
CN106750301BActive Publication Date: 2019-03-22INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
Publication Date
2019-03-22

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Abstract

The invention belongs to the field of high polymer materials and particularly relates to sulfonated polyarylether sulfone containing a pyridine group and a preparation method of the sulfonated polyarylether sulfone. According to the preparation method, dichloropyridine such as 3,5-dichloropyridine is taken as a monomer, and the feeding proportion of sulfonated monomers to non-sulfonated monomers is adjusted, so as to prepare polyarylether sulfone with different sulfonating degrees by virtue of nucleophilic condensation polymerization; and meanwhile, the feeding proportion of pyridine monomers is adjusted, so as to prepare sulfonated polyarylether sulfone with different pyridine content. A sulfonated polyarylether sulfone copolymer film containing the pyridine group has good dimensional stability, chemical stability and alcohol-rejecting ability and further has potential application prospect in the field of fuel cell polymer electrolyte membranes.
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Description

technical field

[0001] The invention belongs to the field of polymer materials, and in particular relates to a pyridine group-containing sulfonated polyaryl ether sulfone copolymer and a preparation method thereof, and the invention also relates to the preparation of the pyridine group-containing sulfonated polyarylether sulfone copolymer application. Background technique

[0002] Polyelectrolyte membrane fuel cells have the advantages of fast start-up speed, high specific energy, safety and portability, and are considered to be reliable energy devices in electric vehicles, portable power supplies, and stationary power stations. According to the working principle of the fuel cell, the polyelectrolyte membrane needs to have the ability to isolate fuel and oxygen, isolate electrons and conduct protons, and at the same time require it to have good dimensional stability, mechanical properties, thermal stability and oxidation resistance. At present, the widely used and commercia...

Claims

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