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Polyaryletherketone anion conducting membrane material with side chain containing quaternary ammonium salt group and its preparation method

A technology of quaternary ammonium salt group and polyaryletherketone, which is applied in the direction of electrical components, circuits, battery electrodes, etc., can solve the problem of membrane mechanical performance degradation and achieve excellent thermal performance

Inactive Publication Date: 2012-10-24
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with proton exchange membrane fuel cells, anion exchange membrane fuel cells have the advantages of using non-precious metal catalysts, avoiding carbonate precipitation, and fast oxygen reduction reaction rate. Improvement will inevitably increase the water absorption rate of anion-conducting membranes, which will lead to a decrease in the mechanical properties of the membranes. Therefore, many countries have successively carried out the development of anion-exchange membranes, hoping to overcome the shortcomings of the current anion-conducting membranes.

Method used

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  • Polyaryletherketone anion conducting membrane material with side chain containing quaternary ammonium salt group and its preparation method
  • Polyaryletherketone anion conducting membrane material with side chain containing quaternary ammonium salt group and its preparation method
  • Polyaryletherketone anion conducting membrane material with side chain containing quaternary ammonium salt group and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Example 1: Preparation of side chain-containing methylphenyl polyaryletherketone (X=0.6) (1)

[0032] 0.6428 grams (0.003mol) of 3,5-dimethylphenylhydroquinone, 0.6725 grams (0.002mol) of 2,2-bis-(4-hydroxyphenyl)hexafluoropropane, 4,4'-bis Put 1.091 grams (0.005 mol) of fluorobenzophenone and 0.7602 grams of anhydrous potassium carbonate, 7 mL of N-methylpyrrolidone, and 7 mL of toluene into a 50 mL three-necked flask equipped with a water dispenser, ventilate argon, and heat up to the reflux of toluene. Stir and reflux for 2 hours, remove toluene, raise the temperature to 180°C, continue to react at about 180°C for 6 hours, precipitate the polymer solution in deionized water, grind, wash, and dry to obtain polyarylene with side groups containing methylphenyl White powder of ether ketone. The molecular formula is as follows:

[0033]

Embodiment 2

[0034] Embodiment 2: the preparation (2) of polyaryletherketone containing methylphenyl in side chain

[0035] The method is the same as in Example 1, and the amount of monomer is enlarged tenfold to carry out polymerization. 6.428 grams (0.03mol) of 3,5-dimethylphenylhydroquinone, 6.725 grams (0.02mol) of 2,2-bis-(4-hydroxyphenyl)hexafluoropropane, 4,4'-difluoro 10.910 grams of benzophenone (0.05mol) and 7.602 grams of anhydrous potassium carbonate, 70mL of N-methylpyrrolidone, and 50mL of toluene are put into a 250mL three-necked flask equipped with a water dispenser, argon gas is passed, the temperature is raised to toluene reflux, and the mixture is stirred. Reflux for 3 hours, remove toluene, heat up to 180°C, continue to react at about 180°C for 12 hours, precipitate the polymer solution in deionized water, grind, wash, and dry to obtain the same side group-containing methyl group as in Example 1. White powder of phenyl polyaryletherketone.

Embodiment 3

[0036] Example 3: Preparation of side chain-containing methylphenyl polyaryletherketone (X=0.75) (1)

[0037] 0.8034 g (0.00375 mol) of 3,5-dimethylphenylhydroquinone, 0.4203 g (0.00125 mol) of 2,2-bis-(4-hydroxyphenyl) hexafluoropropane, 4,4'-di Put 1.091 grams (0.005 mol) of fluorobenzophenone and 0.7602 grams of anhydrous potassium carbonate, 7 mL of N-methylpyrrolidone, and 7 mL of toluene into a 50 mL three-necked flask equipped with a water dispenser, ventilate argon, and heat up to the reflux of toluene. Stir and reflux for 2 hours, remove toluene, raise the temperature to 180°C, continue to react at about 180°C for 6 hours, precipitate the polymer solution in deionized water, grind, wash, and dry to obtain polyarylene with side groups containing methylphenyl White powder of ether ketone. The molecular formula is as follows:

[0038]

[0039] See figure 1 .

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Abstract

Belonging to the technical field of high polymer materials, the invention relates to a polyaryletherketone anion conducting membrane material with a side chain containing a quaternary ammonium salt group and its preparation method. According to the invention, a nucleophilic polycondensation reaction is utilized to synthesize a series of polyaryletherketone polymers. The benzene ring on a side chain of the polymers has two methyl groups, which then undergo bromination, amination, alkalization, washing and other processes, thus obtaining an anion conducting membrane applicable to anion conducting membrane fuel cells. The polyaryletherketone system used in the invention is polymers formed by connection of phenylene rings through an ether bond and a carbonyl group and contains a rigid benzene ring in the molecular structure, thus having excellent thermal performance, electric insulativity, mechanical performance, radiation resistance, and strong chemical stability, etc. And the anion conducting membrane prepared from the polymer system and used for anion conducting membrane fuel cells has excellent thermal stability and mechanical performance, and provides a necessary foundation to anion fuel cells used under a high temperature condition.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to the synthesis of polyaryletherketone polymers containing quaternary ammonium salt groups in their side chains and the preparation method of polyaryletherketone anion-conducting membranes containing quaternary ammonium salt groups in their side chains Background technique [0002] Fuel cells are known as the fourth-generation power generation device after hydraulic power, thermal power, and nuclear energy and a power device that replaces internal combustion engines. It only needs to continuously supply fuel to make the fuel react with the oxidant, and it can directly convert chemical energy into energy efficiently and environmentally friendly. electrical energy. It is not limited by the Carnot cycle, and the actual energy conversion efficiency can reach more than 50%, which is superior to conventional power generation and chemical power sources. At present, fuel cells a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/10C08G65/48C08G65/40C08J5/18H01M2/16H01M4/94
CPCY02E60/12Y02E60/50
Inventor 姜振华沈困知庞金辉冯嗣男王阳
Owner JILIN UNIV
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