Polyaryletherketone/polyether sulphone with side chain containing benzimidazole and preparation method and application of polyaryletherketone/polyether sulphone

A technology of benzimidazole and polyaryl ether ketone, which is applied in the field of polymer materials and their preparation, can solve the problems of shortening the lifespan of membrane materials, reducing the anti-oxidation stability, reducing mechanical properties, etc., so as to simplify the synthesis steps and improve the comprehensive performance. Effect

Active Publication Date: 2017-01-04
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, sulfonated polyarylether materials with a high degree of sulfonation swell severely when exposed to water, which reduces the mechanical properties of the material, reduces the oxidation resistance stability, and greatly reduces the life of the membrane material.

Method used

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  • Polyaryletherketone/polyether sulphone with side chain containing benzimidazole and preparation method and application of polyaryletherketone/polyether sulphone
  • Polyaryletherketone/polyether sulphone with side chain containing benzimidazole and preparation method and application of polyaryletherketone/polyether sulphone
  • Polyaryletherketone/polyether sulphone with side chain containing benzimidazole and preparation method and application of polyaryletherketone/polyether sulphone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045]Add 4,4'-difluorobenzophenone (0.4364g, 2mmol) shown in formula (i) into a 100mL three-necked flask equipped with a magnetic stirrer, a nitrogen pipe, a water separator and a condenser tube, the formula ( 3,3'-sodium disulfonate-4,4'-difluorobenzophenone (1.2669g, 3mmol) shown in ii), hexafluorobisphenol A (1.5130g, 4.5mmol) shown in formula (iii) ), 4,4'-methylene-2,2'-benzimidazole bisphenol (0.2162g, 0.5mmol) and potassium carbonate (0.8293g, 6mmol) shown in formula (iv), with 17mL N,N - Dissolve dimethylacetamide, add 15mL of toluene as a water-carrying agent, pass nitrogen to remove oxygen for 10 minutes, heat up to 145-150°C and reflux for 4 hours, distill the toluene, then raise the temperature to 160-165°C to continue the reaction for 20 hours (the solution viscosity is obvious increase), stop the reaction. After the reaction liquid was cooled, the reaction liquid was diluted with 5 mL of N,N-dimethylacetamide, poured into 200 mL of ethanol, precipitated, and fi...

Embodiment 2

[0054] Add 4,4'-difluorodiphenylsulfone (0.7628g, 3mmol) shown in formula (v) into a 100mL three-necked flask equipped with a magnetic stirrer, nitrogen pipe, water separator and condenser tube, the formula ( ii) 3,3'-sodium disulfonate-4,4'-difluorobenzophenone (0.8446g, 2mmol), hexafluorobisphenol A (1.3449g, 4mmol) represented by formula (iii) , 4,4'-methylene-2,2'-benzimidazole bisphenol (0.4325g, 1mmol) and potassium carbonate (0.8293g, 6mmol) represented by formula (iv), with 17mL N,N-di Dissolve methyl acetamide, add 15mL toluene as a water-carrying agent, pass nitrogen to remove oxygen for 10 minutes, heat up to 145-150°C and reflux for 4 hours, distill the toluene, then raise the temperature to 160-165°C to continue the reaction for 22 hours (the viscosity of the solution increases significantly ), stop the reaction. After the reaction liquid was cooled, the reaction liquid was diluted with 5 mL of N,N-dimethylacetamide, poured into 200 mL of ethanol, precipitated, a...

Embodiment 3

[0059] Add 4,4'-difluorodiphenyl sulfone (0.2542g, 1mmol) shown in formula (v) into a 100mL three-necked flask equipped with a magnetic stirrer, nitrogen pipe, water separator and condenser tube, the formula ( ii) 3,3'-sodium disulfonate-4,4'-difluorobenzophenone (1.6892g, 4mmol), bisphenol A (0.6849g, 3mmol) shown in formula (vi), formula 4,4'-methylene-2,2'-benzimidazole bisphenol (0.8649g, 2mmol) and potassium carbonate (0.8293g, 6mmol) shown in (iv), with 17mL N,N-dimethyl Dissolve acetamide, add 15mL of toluene as a water-carrying agent, pass nitrogen to remove oxygen for 10 minutes, raise the temperature to 145-150°C and reflux for 4 hours, distill the toluene, then raise the temperature to 160-165°C to continue the reaction for 22 hours (the viscosity of the solution increases significantly), Stop responding. After the reaction liquid was cooled, the reaction liquid was diluted with 5 mL of N,N-dimethylacetamide, poured into 200 mL of ethanol, precipitated, and filtere...

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Abstract

The invention provides polyaryletherketone / polyether sulphone with a side chain containing benzimidazole and a preparation method and application of polyaryletherketone / polyether sulphone. Polyaryletherketone / polyether sulphone with the side chain containing benzimidazole is a sulfonated polymer of which a main chain is composed of a repetitive structure unit shown in the formula (i) and the molecular weight ranges from 7,000 to 12,000 or an unsulfonated polymer of which a main chain is composed of a constitutional repeating unit shown in the formula (ii) and the molecular weight ranges from 7,000 to 12,000. A polyaryletherketone / polyether sulphone polymer with the side chain containing benzimidazole is obtained through a one-step synthesis method, the synthesis steps are simplified, by means of intramolecular and intermolecular interaction between benzimidazole and a sulfonic acid group, the problems that a highly sulfonated polymer is soluble in water, and polybenzimidazole is poor in solubility are solved, and the comprehensive performance of the polymer can be further improved. Please see the formulas in the description.

Description

[0001] (1) Technical field [0002] The invention relates to a class of polymer materials and their preparation methods and applications, especially polymers containing ether ketone or ether sulfone structures in the main chain and benzimidazole and sulfonate groups in the side chains, as well as their synthesis methods and applications. [0003] (2) Background technology [0004] Aromatic polymers such as polyarylethers, polyimides, and polybenzimidazoles are widely used in aerospace and other fields due to their excellent thermochemical stability and mechanical properties, as well as good hydrolysis resistance and corrosion resistance. The sulfonated products have also been extensively studied as proton exchange membrane materials. [0005] In order to obtain high proton conductivity, it is necessary to increase the degree of sulfonation of the polymer. Sulfonated polyarylether polymers are mainly obtained by post-sulfonation and direct copolymerization. The post-sulfonatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G75/23C08J5/18C08L81/06C08G65/40C08L71/10H01M2/16
CPCC08G65/4056C08G75/23C08G2650/40C08J5/18C08J2371/10C08J2381/06C08L71/00C08L81/06C08L2201/08C08L2203/16C08L2203/20H01M50/411Y02E60/10
Inventor 王建黎吴凯张祺
Owner ZHEJIANG UNIV OF TECH
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