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Multibranched polyaryletherketone anion-exchange membrane and preparation method thereof

An anion-exchange membrane and polyaryletherketone technology, which is applied in the field of multi-branched polyaryletherketone anion-exchange membrane and its preparation, can solve the problems of inconvenient functional reaction and poor solubility, and achieve a wide range of solvent choices and improve performance , Response operation is simple and fast

Active Publication Date: 2018-01-12
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, polymers such as polysulfone and polyether ether ketone are commonly used as the main chain for membrane materials, but some polymers will degrade in alkaline environments, or have poor solubility in organic solvents, which is not convenient for functional reactions

Method used

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  • Multibranched polyaryletherketone anion-exchange membrane and preparation method thereof
  • Multibranched polyaryletherketone anion-exchange membrane and preparation method thereof
  • Multibranched polyaryletherketone anion-exchange membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Synthesis of amino-substituted polyaryletherketone: under nitrogen protection, 4.4081g (20mmol) of difluorobenzophenone, 1.8686g (5mmol) of 2,2-bis(3-amino-4-hydroxyphenyl)hexa Fluoropropane, 1.8813g (15mmol) of hexafluorobisphenol A and 4.1882g (30mmol) of potassium carbonate were added to a 100mL three-necked flask, then 15mL of toluene and 30mL of N-methylpyrrolidone were added to form a mixed solution, and the temperature was gradually raised to 155 °C, reflux until the water is completely removed, remove the toluene, and then keep the temperature constant for 4h. After the reaction is completed, the product is slowly poured into ice water under mechanical stirring, and a filamentous polymer product is precipitated. The product is washed and soaked with ethanol repeatedly, and then dried to obtain a polymer. Dissolve the polymer with N-methylpyrrolidone into a solution with a certain concentration. After the solution is completely dissolved, pour the solution into e...

Embodiment 2

[0044]Synthesis of amino-substituted polyaryletherketone: under nitrogen protection, 4.4081g (20mmol) of difluorobenzophenone, 2.6161g (7mmol) of 2,2-bis(3-amino-4-hydroxyphenyl)hexa Fluoropropane, 4.4602g (13mmol) of hexafluorobisphenol A and 4.1882g (30mmol) of potassium carbonate were added to a 100mL three-necked flask, then 15mL of toluene and 30mL of N-methylpyrrolidone were added to form a mixed solution, and the temperature was gradually raised to 155 °C, reflux until the water is completely removed, remove the toluene, and then keep the temperature constant for 6h. After the reaction is completed, the product is slowly poured into ice water under mechanical stirring, and a filamentous polymer product is precipitated. The product is washed and soaked with ethanol repeatedly, and then dried to obtain a polymer. Dissolve the polymer with N-methylpyrrolidone into a solution with a certain concentration. After completely dissolving, pour the solution into ethanol to precip...

Embodiment 3

[0051] Synthesis of amino-substituted polyaryletherketone: same as Example 2

[0052] Synthesis of 1-bromohexyl-1-methylpyrrolidine bromide salt ionic liquid: Dissolve 5mL of 1,6-dibromohexane in 15mL of ethyl acetate in a 50mL one-necked flask, add 1.754g of N-methylpyrrolidine, After reacting at 60°C for 24h, a precipitated product in the form of milky white powder was obtained. The product was repeatedly washed with ethyl acetate for 3 to 5 times, and vacuum-dried at 60° C. for 12 hours to obtain a milky white powdery ionic liquid.

[0053] Preparation of multi-branched polyaryletherketone anion-exchange membrane: Weigh 0.8g of amino-substituted polyaryletherketone polymer into a 100mL three-neck flask under nitrogen protection, dissolve with 20mL DMSO, and add 0.1024g after the polymer is fully dissolved NaH, the reaction system was reacted at 60°C for 7h. Dissolve 1.054g of 1-bromohexyl-1-methylpyrrolidinium bromide salt in 12mL of DMSO, and add it into the flask after ...

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Abstract

The invention discloses a multibranched polyaryletherketone anion-exchange membrane and a preparation method thereof and belongs to the technical field of alkaline anion-exchange membranes. At first,an amino substituted polyaryletherketone polymer with favorable solubility and stability is synthesized, and then amino of the polymer is directly taken as a grafting site to perform functional grafting on the polymer to obtain a membrane material and prepare the membrane. The prepared multibranched polyaryletherketone anion-exchange membrane has good alkali stability and high ionic conductivity and can be applied to alkaline fuel cells.

Description

technical field [0001] The invention belongs to the technical field of alkaline anion exchange membranes, and relates to a multi-branched polyaryletherketone anion exchange membrane and a preparation method thereof. Background technique [0002] With the increasingly severe global environmental and energy problems, fuel cells, as a new type of power generation device, have attracted widespread attention because of their advantages such as wide range of fuel sources, high efficiency, low or even zero emissions. Alkaline anion exchange membrane fuel cell is a kind of fuel cell. Compared with the more mature proton exchange membrane fuel cell, it has the advantages of fast oxidation speed, low fuel permeation speed, good water balance, and relatively low cost. . The advantage of low cost stems from the fact that alkaline anion exchange membrane fuel cells can use non-noble metals as catalysts, which is one of their most important advantages. [0003] The basic anion exchange ...

Claims

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Application Information

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IPC IPC(8): H01M8/1025H01M8/1072C08G65/40
CPCY02E60/50
Inventor 焉晓明刘嘉霏贺高红阮雪华郑文姬代岩
Owner DALIAN UNIV OF TECH
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