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Polypyrrolone/sulfonated polymer composite proton exchange membrane material, and preparation method and application thereof

A sulfonated polymer, proton exchange membrane technology, applied in solid electrolyte fuel cells, fuel cell parts, electrical components, etc., can solve problems such as insoluble and infusible, achieve simple operation, good mechanical strength and electrical conductivity , the effect of uniform dispersion

Active Publication Date: 2013-05-08
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its rigid structure, polypyrrone polymers are mostly insoluble and infusible. How to compound polypyrrone and sulfonated polymers to make membranes is an important technical problem.

Method used

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  • Polypyrrolone/sulfonated polymer composite proton exchange membrane material, and preparation method and application thereof
  • Polypyrrolone/sulfonated polymer composite proton exchange membrane material, and preparation method and application thereof
  • Polypyrrolone/sulfonated polymer composite proton exchange membrane material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: Preparation of Polypyrrole / Sulfonated Polyetheretherketone Composite Proton Exchange Membrane

[0039] Soak sulfonated polyether ether ketone (number average molecular weight: 60,000) with a sulfonation degree of 95% in 1mol / L NaOH solution for 24 hours, wash with water until neutral and dry in vacuum, then dissolve in an appropriate amount of m-cresol , configured as a polymer solution with a mass percentage of 30%; weigh 2000g of the polymer solution and place it in a three-necked flask, add 2.78g of tetraamine monomer (A-1), 1.2g of trimethylamine (catalyst), and stir until The reactants were fully dissolved. Weigh 3.22 g of aromatic dianhydride monomer (G-1), and dissolve it in 10 mL of m-cresol. at -10°C and N 2 Under the protection of gas, the aromatic dianhydride solution was slowly added dropwise into the above-mentioned three-necked flask. After the drop, the reaction temperature was slowly raised to 0°C, and the stirring reaction was continued for...

Embodiment 2

[0042] Example 2: Preparation of polypyrrone / sulfonated polyethersulfone composite proton exchange membrane

[0043] Soak sulfonated polyethersulfone (number-average molecular weight: 40,000) with a sulfonation degree of 85% in 1mol / L NaOH solution for 24 hours, wash with water repeatedly, dry in vacuum, dissolve in dimethyl sulfoxide, and configure A polymer solution with a mass percentage of 5%; weigh 3000g of the polymer solution and place it in a three-neck bottle. in N 2 Under gas protection, 18.9 g of tetraamine monomer (A-2) and 0.6 g of trimethylamine (catalyst) were added, and stirring was started to fully dissolve the reactants. Weigh 41.1 g of the aromatic dianhydride monomer (G-3), and dissolve it in 500 mL of dimethyl sulfoxide. at 10°C and N 2 Under the protection of gas, the aromatic dianhydride solution was slowly added dropwise into the above-mentioned three-neck flask. After the drop was completed, the reaction temperature was kept at 10° C., and the stirrin...

Embodiment 3

[0046] Example 3: Preparation of polypyrrone / sulfonated polyether ether ketone sulfone composite proton exchange membrane

[0047] Sulfonated polyether ether ketone sulfone (number average molecular weight: 10000) with a sulfonation degree of 75% was mixed with 2mol / L NaHCO 3 The solution was soaked for 24 hours, washed with water until neutral and vacuum-dried, dissolved in an appropriate amount of dimethylformamide to prepare a solution with a mass percentage of 20%, and 1000g of the polymer solution was weighed and placed in a three-neck bottle. in N 2 Under gas protection, 9.49 g of tetraamine monomer (A-3) and 2 g of triphenylphosphine (catalyst) were added, and stirring was started to fully dissolve the reactants. Weigh 10.51 g of aromatic dianhydride monomer (G-5), and dissolve it in 100 mL of dimethyl sulfoxide. at 25°C and N 2 Under the protection of gas, the aromatic dianhydride solution was slowly added dropwise into the above-mentioned three-necked flask, and af...

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Abstract

The invention discloses a polypyrrolone / sulfonated polymer composite proton exchange membrane material, and a preparation method and an application thereof. The composite proton exchange membrane material is prepared with the method comprising the steps that: (1) under the protection of an inert atmosphere, aromatic tetraamine monomer, aromatic dianhydride monomer, and a catalyst are subjected to an in-situ polymerization reaction in a sulfonate polymer solution, such that a membrane-forming liquid comprising a polypyrrolone prepolymer is obtained; and (2) the membrane-forming liquid is coated on a carrier, and heating treatment membrane preparation is carried out; cooling and demolding are carried out after membrane preparation is finished; the obtained membrane is transformed by washing by using an acid solution, such that the polypyrrolone / sulfonated polymer composite proton exchange membrane material is obtained. With the method provided by the invention, the components are dispersed more uniformly, and operation is simpler. The prepared composite membrane has good mechanical strength and conductivity. Compared with a non-modified sulfonated polymer, size stability and alcohol resistance are greatly improved. The membrane material can be used in fields such as proton exchange membrane of proton exchange membrane fuel cell, ion exchange resin, membrane separation, sensor, and the like.

Description

technical field [0001] The invention belongs to the field of preparation of functional polymer materials, and in particular relates to a polypyrrole / sulfonated polymer composite proton exchange membrane material and its preparation method and application. Background technique [0002] Proton exchange membrane fuel cell is a new type of energy conversion device, which has the advantages of high energy density, high efficiency, and no pollution. According to the fuel used, it can be divided into hydrogen fuel cell (PEMFC) and direct methanol fuel cell (DMFC). The proton exchange membrane is the key material of PEMFC and DMFC, which plays the role of transporting protons, blocking fuel and air, and its performance plays a vital role in the output performance of the battery. At present, the proton exchange membrane materials commonly used in PEMFC and DMFC are perfluorosulfonic acid membranes. This type of material has high proton conductivity, chemical and mechanical stability...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/22C08L71/10C08L81/06C08L71/12C08L79/04C08G73/20H01M8/02H01M8/10H01M2/16
CPCY02E60/521Y02E60/12Y02E60/522Y02E60/50
Inventor 尚玉明王要武谢晓峰王金海王树博钱伟
Owner TSINGHUA UNIV
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