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Fiber-reinforced polypyrrolone thin film, preparation method thereof and application of fiber-reinforced polypyrrolone thin film in fuel cell

A fiber-reinforced polypyrrole technology, applied in fuel cells, circuits, electrical components, etc., can solve problems such as limited applications and structural complexity, and achieve the effects of reduced volume swelling rate, inhibited size swelling, and high binding force

Active Publication Date: 2022-06-24
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complexity of its structure and the nature of insoluble and infusible, its application is greatly limited.

Method used

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  • Fiber-reinforced polypyrrolone thin film, preparation method thereof and application of fiber-reinforced polypyrrolone thin film in fuel cell
  • Fiber-reinforced polypyrrolone thin film, preparation method thereof and application of fiber-reinforced polypyrrolone thin film in fuel cell
  • Fiber-reinforced polypyrrolone thin film, preparation method thereof and application of fiber-reinforced polypyrrolone thin film in fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of preparation of fiber-reinforced polypyridine throat film, the method is as follows:

[0029] 1.7142 g (8 mmol) of 3,3',4,4'-biphenyltetramine and 10 mL of freshly distilled N,N-dimethylformamide were added to a three-necked round-bottomed flask, mechanically stirred at room temperature under nitrogen atmosphere After 2 h of dissolution, the three-necked flask was transferred to an ethanol bath at -10°C. Dissolve 2.4817g (8mmol) of 4,4'-oxydiphthalic anhydride in 10mL of N-methyl-2-pyrrolidone, and slowly add it dropwise to the flask every 15 minutes under vigorous mechanical stirring , about 2 to 3 hours, and then the reaction was further stirred at -10 °C for 5 hours to obtain a high-viscosity polyaminoamic acid precursor solution.

[0030] Properly dilute the above precursor solution with a 1:1 mixed solvent of DMF and NMP, then fully immerse the polyimide non-woven fiber membrane in this solution, and then transfer it to a clean glass plate, first at 40 ~ ...

Embodiment 2

[0033] A kind of preparation of fiber-reinforced polypyridine throat film, the method is as follows:

[0034] 1.7142 g (8 mmol) of 3,3',4,4'-biphenyltetramine and 12 mL of freshly distilled N,N-dimethylformamide were added to a three-necked round-bottomed flask, mechanically stirred at room temperature under nitrogen atmosphere After 2 h of dissolution, the three-necked flask was transferred to an ethanol bath at -10°C. Dissolve 2.5778g (8mmol) of 4,4'-carbonyl diphthalic anhydride in 12mL of N,N-dimethylformamide, and slowly add it dropwise to the flask every 15 minutes under vigorous mechanical stirring After about 2-3 hours of dripping, the reaction was further stirred at -10 °C for 5 hours to obtain a high-viscosity polyaminoamic acid precursor solution.

[0035] Properly dilute the above precursor solution with DMF, then fully immerse the polyimide non-woven fiber membrane in this solution, then transfer it to a clean glass plate, first heat it at 40-60 ° C for 4-5 hours...

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Abstract

The invention discloses a fiber-reinforced polypyrrolone thin film, a preparation method thereof and application of the fiber-reinforced polypyrrolone thin film in a fuel cell. The preparation method mainly comprises the following steps: (1) respectively dissolving a tetramine monomer and a dianhydride monomer in a solvent, and carrying out solution polymerization to prepare a polypyrrolone precursor solution; (2) fully dipping the polyimide non-woven fiber membrane in the polypyrrolone precursor solution, then transferring the polyimide non-woven fiber membrane to a glass plate, heating and curing, and removing most of the solvent; and (3) carrying out heat treatment on the cured film to obtain the polyimide fiber reinforced polypyrrolone film. The fiber-reinforced polypyrrolone film prepared by the invention has excellent dimensional stability and mechanical properties, and relatively high proton conductivity and battery performance.

Description

technical field [0001] The invention relates to the preparation of a polyimide fiber reinforced polypyrrole film and its application in a high temperature proton exchange membrane fuel cell, belonging to the field of fuel cells. Background technique [0002] Proton exchange membrane fuel cells operate at relatively high temperatures (100–200 °C) and have the advantages of accelerating electrode reaction kinetics, improving catalyst tolerance to carbon monoxide, simplifying hydrothermal management, and reducing costs. Inorganic phosphoric acid, as a proton conductor that can self-ionize under high temperature and no water, is widely used in "acid-base composite" high-temperature proton exchange membranes. For example, phosphoric acid-doped polybenzimidazole-based proton exchange membranes are regarded as For the most promising materials, the related research is also the most extensive and in-depth. [0003] Polypyridine is a kind of trapezoidal or semi-trapezoidal polymer fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/04C08J5/18C08L79/04C08L79/08H01M8/1004
CPCC08J5/046C08J5/18H01M8/1004C08J2379/04Y02E60/50
Inventor 王拴紧白钰孟跃中肖敏韩东梅黄盛
Owner SUN YAT SEN UNIV
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