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Sulfonated polyaryletherketone copolymer containing benzothiazole side group and preparation method thereof

A technology of sulfonated polyaryletherketone and copolymer, which is applied in the field of sulfonated polyaryletherketone copolymer and its preparation, and can solve the problems of reduced anti-oxidation stability, increased fuel transmission rate, and reduced life of membrane materials, etc. , to improve chemical stability and mechanical properties, hinder permeation, and inhibit excessive swelling

Inactive Publication Date: 2016-05-04
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to obtain high proton conductivity, it is necessary to increase the degree of sulfonation of the polymer, but the sulfonated polyaryletherketone material with a high degree of sulfonation is severely swollen with water, which reduces the mechanical properties of the material, reduces the stability of oxidation resistance, and reduces the fuel permeability. The rate increases, which greatly reduces the life of the membrane material

Method used

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  • Sulfonated polyaryletherketone copolymer containing benzothiazole side group and preparation method thereof
  • Sulfonated polyaryletherketone copolymer containing benzothiazole side group and preparation method thereof
  • Sulfonated polyaryletherketone copolymer containing benzothiazole side group and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In a three-necked flask equipped with a mechanical stirrer, a water dispenser, a thermometer, a condenser tube, and nitrogen protection, add 0.04mol of tetramethylbiphenol, 0.06mol of diallyl bisphenol A, and 0.05mol of 4 , 4'-difluorobenzophenone, 0.05mol of 3,3'-sodium disulfonate-4,4'-difluorobenzophenone, 0.12mol of potassium carbonate as a salt-forming agent, and dimethylformaldehyde Amide is used as solvent, toluene is used as water carrier, and the solid content is 20%. Bring water at 120°C for 3 hours, then distill off the toluene, raise the temperature to 150°C and continue the reaction for 10 hours. After the reaction was complete, the reactant was poured into distilled water to form a light yellow strip solid, which was pulverized into a fine powder with a pulverizer, washed 5 times with acetone, and then washed 5 times with distilled water. Dry in an oven at 80°C to obtain sulfonated polyaryl ether ketone containing acryl group;

[0038] The polymer is the...

Embodiment 2

[0040] In a three-necked flask equipped with a mechanical stirrer, a water dispenser, a thermometer, a condenser tube, and nitrogen protection, add 0.08 mol of hexafluorobisphenol A, 0.02 mol of diallyl bisphenol A, and 0.05 mol of 4,4 '-Difluorobenzophenone, 0.05mol of 3,3'-sodium disulfonate-4,4'-difluorobenzophenone, 0.105mol of potassium carbonate as salt-forming agent, and dimethylacetamide as As a solvent, toluene is used as a water-carrying agent, and the solid content is 20%. Bring water at 130°C for 3 hours, then distill off the toluene, raise the temperature to 160°C and continue the reaction for 8 hours. After the reaction was complete, the reactant was poured into distilled water to form a light yellow strip solid, which was pulverized into a fine powder with a pulverizer, washed 5 times with acetone, and then washed 5 times with distilled water. Dry it in an oven at 80°C to obtain propylene-containing sulfonated polyaryletherketone.

[0041]Subsequently, the pol...

Embodiment 3

[0043] In a three-necked flask equipped with a mechanical stirrer, a water dispenser, a thermometer, a condenser tube, and nitrogen protection, add 0.02mol of bisphenol A, 0.08mol of diallyl bisphenol A, and 0.02mol of 4,4'- Difluorobenzophenone, 0.08mol of 3,3'-sodium disulfonate-4,4'-difluorobenzophenone, 0.11mol of potassium carbonate as a salt-forming agent, and N-methylpyrrolidone as a solvent, Toluene is used as the water-carrying agent, and the solid content is 20%. Bring water at 140°C for 3 hours, then distill off the toluene, raise the temperature to 170°C and continue the reaction for 6 hours. After the reaction was complete, the reactant was poured into distilled water to form a light yellow strip solid, which was pulverized into a fine powder with a pulverizer, washed 5 times with acetone, and then washed 5 times with distilled water. Dry it in an oven at 80°C to obtain propylene-containing sulfonated polyaryletherketone.

[0044] Subsequently, the polymer is ad...

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Abstract

The invention discloses a sulfonated polyaryletherketone copolymer containing a benzothiazole side group and a preparation method thereof. A bisphenol monomer, diallyl bisphenol A, 4,4'-difluorobenzophenone and 3,3'-sodium disulfonate-4,4'-difluorobenzophenone are subjected to condensation polymerization to generate sulfonated polyaryletherketone containing allyl; under catalytic action of dibenzoyl peroxide, a polymer chain section is grafted with a benzothiazole group to obtain the sulfonated polyaryletherketone copolymer containing the benzothiazole side group. The benzothiazole group and a sulfonic acid group can form an ionic crosslinked structure, and therefore a sulfonated polyaryletherketone ion crosslinked membrane containing the benzothiazole side group can be prepared. The polymer membrane has good size stability, low methyl alcohol permeability, high chemical stability and good proton conduction performance, and is suitable for the field of fuel cell polymer electrolyte membrane application.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a sulfonated polyaryletherketone copolymer containing benzothiazole groups and a preparation method thereof. Background technique [0002] Due to low emissions and high conversion efficiency, fuel cell technology has been considered as one of the most promising energy technologies. Polymer Electrolyte Membrane (PEM), as a key component of fuel cells, plays a role in isolating fuel and oxidant and conducting protons from anode to cathode. This requires polymer electrolyte membranes to have the following properties: excellent proton conductivity, good electrical insulation, high chemical stability and mechanical properties, low fuel permeability and cost. At present, the PEMs that have been commercially used in fuel cells are mainly perfluorosulfonic acid series membranes, such as Dupont's Nafion series membranes, because of their excellent proton conductivity and chemical stabili...

Claims

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Application Information

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IPC IPC(8): C08G65/48C08G65/40
CPCC08G65/4025C08G65/4056C08G65/48C08J5/18C08J2371/10
Inventor 李野芦艾盖方圆余凤湄张倩孙素明
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS