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Sulfonated poly(arylene ether ketone) polymer with side chains containing benzimidazolyl in and preparation method thereof

A sulfonated polyaryletherketone and benzimidazole-based technology, which is applied in the field of sulfonated polyaryletherketone polymers and their preparation, can solve the problems of low heat energy recovery and utilization, difficult water and heat management of the system, and catalyst CO poisoning, etc. problems to achieve good proton conductivity

Inactive Publication Date: 2009-02-04
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lower temperature operating conditions make fuel cells face many problems in practical applications, such as catalyst CO poisoning, difficulty in hydrothermal management of the system, and low recovery and utilization of heat energy.

Method used

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  • Sulfonated poly(arylene ether ketone) polymer with side chains containing benzimidazolyl in and preparation method thereof
  • Sulfonated poly(arylene ether ketone) polymer with side chains containing benzimidazolyl in and preparation method thereof
  • Sulfonated poly(arylene ether ketone) polymer with side chains containing benzimidazolyl in and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Add a mol 4,4'-difluorobenzophenone, b mol 3,3'-sodium disulfonate-4,4'-difluorobenzophenone, (a+b) mol phenolphthalein into the In the three-necked flask of the stirrer, air guide tube, water separator and condenser tube, 1.8 (a+b) mol of potassium carbonate was used as the salt-forming agent, under a nitrogen atmosphere, dimethyl sulfoxide was used as the solvent, and toluene was used as the solvent. Water-carrying agent, the solid content of the reaction system is 25% (wt), the temperature is raised to 140°C with water for 3 hours, then the toluene is distilled off, and the temperature is raised to 180°C for 4 hours. After reaction finishes, product is poured into the mixed solution of hydrochloric acid and ethanol (V HCl / (V 乙醇 +V HCl )=30%, wherein the massfraction of hydrochloric acid is 37%, and the massfraction of ethanol is 95%), becomes white bar, is pulverized into fine particles with pulverizer, then with Buchner funnel suction filtration, solid powder is ...

Embodiment 2

[0073] Add a mol 4,4'-difluorobenzophenone, b mol 3,3'-sodium disulfonate-4,4'-difluorobenzophenone, (a+b) mol bisphenolic acid to the container In a three-neck flask with a stirrer, an air guide tube, a water separator and a condenser tube, 1.8 (a+b) mol of potassium carbonate is used as a salt-forming agent, under a nitrogen atmosphere, dimethyl sulfoxide is used as a solvent, and toluene It is a water-carrying agent, the solid content of the reaction system is 25% (wt), and water is carried at 140°C for 3 hours, then the toluene is evaporated, and the temperature is raised to 180°C for 4 hours. After reaction finishes, product is poured into the mixed solution of hydrochloric acid and ethanol (V HCl / (V 乙醇 +V HCl )=30%, wherein the massfraction of hydrochloric acid is 37%, and the massfraction of ethanol is 95%), becomes white bar, is pulverized into fine particles with pulverizer, then with Buchner funnel suction filtration, solid powder is used Boil acetone, filter wit...

Embodiment 3

[0081] A mol 4,4'-difluorobenzophenone, b mol 3,3'-sodium disulfonate-4,4'-difluorobenzophenone, (a+b)mol 4-(2,5 -dihydroxyphenyl) benzoic acid joins in the there-necked flask that agitator, gas guide tube, water separator and condensation pipe are equipped with, with the potassium carbonate of 1.8(a+b)mol as salt-forming agent, under nitrogen atmosphere, Using dimethyl sulfoxide as a solvent and toluene as a water-carrying agent, the solid content of the reaction system is 25% (wt), carrying water at 140°C for 3 hours, then distilling off the toluene, and raising the temperature to 180°C for 4 hours. After reaction finishes, product is poured into the mixed solution of hydrochloric acid and ethanol (V HCl / (V 乙醇 +V HCl )=30%, wherein the massfraction of hydrochloric acid is 37%, and the massfraction of ethanol is 95%), becomes white bar, is pulverized into fine particles with pulverizer, then with Buchner funnel suction filtration, solid powder is used Boil acetone, filter...

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Abstract

The invention belongs to the field of a high molecular material, which in particular relates to a polymer with lateral chains containing benzoglioxaline groups in the seires of sulfonated poly aryl ether ketone used for proton-exchange membranes of high-temperature fuel cells, and a preparation method thereof. Firstly, bisphenol monomers with lateral chains linked with carboxyls, fluorine-terminated monomers and sulfonated fluorine-terminated monomers react to prepare a sulfonated polyaryletherketone polymer with skeleton connected with carboxy groups; the degree of sulphonation of the polymer can be adjusted between 0 to 2 by adjusting the ratio of fluorine-terminated monomers and the sulfonated fluorine-terminated monomers. Subsequently, benzoglioxaline groups are introduced onto the lateral chain of the sulfonated polymer by adding ortho-phenylene diamine. Polyaryletherketone of different degrees of sulphonation with lateral chains containing benzoglioxaline groups can be prepared by adjusting the ratio of the sulfonated monomers and unsulfonated monomers. A series of membranes prepared are promising in application in the field of fuel cell membranes, in particular at high temperature.

Description

technical field [0001] The invention belongs to the field of macromolecular materials, and in particular relates to a sulfonated polyaryletherketone polymer whose polymer side chain contains benzimidazole groups and is used as a high-temperature fuel cell proton exchange membrane material and a preparation method thereof. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) has the advantages of high energy conversion rate, low-temperature start-up, no electrolyte leakage, no corrosion, and long life due to the use of solid-state electrolyte polymer membranes as electrolytes. The preferred power source for military, electric vehicles, and regional power stations. As a key part of the proton exchange membrane fuel cell, the proton exchange membrane plays the role of isolating fuel and oxidant, and conducting protons, and its performance determines the performance of the fuel cell. At present, the perfluorosulfonic acid membrane (Nafion membrane) produced ...

Claims

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Application Information

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IPC IPC(8): C08G65/40C08G65/48H01M8/02H01M8/10H01M2/16H01M8/1025H01M8/1069H01M8/1072
CPCY02E60/521Y02E60/50
Inventor 那辉林海丹赵成吉张扬李洪涛
Owner JILIN UNIV
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