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Polysulfone and biphenyl type sulfonated polyether sulfone as well as preparation method and application thereof

A technology of sulfonated polyethersulfone and sulfone-based biphenyl, which is applied in electrochemical generators, final product manufacturing, sustainable manufacturing/processing, etc., can solve problems such as limited applications, achieve improved conductivity, and simple preparation process , The effect that the reaction conditions are easy to control

Inactive Publication Date: 2018-01-19
南京黑泰催化剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the repeating unit of sulfonated polyethersulfone has only one sulfone group, and there are few sites where sulfonic acid groups can be introduced into the repeating unit; this limits its application to some extent

Method used

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  • Polysulfone and biphenyl type sulfonated polyether sulfone as well as preparation method and application thereof
  • Polysulfone and biphenyl type sulfonated polyether sulfone as well as preparation method and application thereof
  • Polysulfone and biphenyl type sulfonated polyether sulfone as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: Synthesis of polysulfone-based biphenyl type sulfonated polyethersulfone homopolymer Al and preparation of proton exchange membrane

[0038]Under nitrogen protection and mechanical stirring, add 13.48g (20mmol) of 4,4'-bis(4-fluorobenzenesulfonyl-3-sulfonate)biphenyl to a 250mL dry three-neck flask with a water separator , 3.72g (20mmol) of 4,4'-diphenol and 55-85mL of N,N-dimethylacetamide, preferably, the optimal addition amount of this embodiment is 75mL. After the solid is completely dissolved, add 5.52-6.90g (40-50mmol) of potassium carbonate and 10-20mL of toluene. Preferably, the optimal addition amounts in this embodiment are 5.80g (42mmol) and 14mL respectively. After stirring evenly, raise the temperature of the reaction system to 120-140°C for 2-6 hours, distill off the water generated in the reaction, and then raise the temperature to 150-170°C for 8-24 hours, preferably, the two best ones in this example The temperature points are 120°C and 160°...

Embodiment 2

[0040] Example 2: Synthesis of polysulfone-based biphenyl type sulfonated polyethersulfone copolymer B-3 / 1 / 2 and preparation of proton exchange membrane

[0041] Under nitrogen protection and mechanical stirring, add 4,4'-bis(4-fluorobenzenesulfonyl-3-sulfonate sodium)biphenyl-2,2' into a 250mL dry three-necked flask with a water separator - 5.27g (6mmol) of sodium disulfonate, 3.04g (12mmol) of 4,4'-difluorodiphenyl sulfone, 3.34g (18mmol) of 4,4'-diphenol, and N,N-dimethylacetamide 40-60mL, preferably, the optimal addition amount in this embodiment is 50mL respectively. After the solid is completely dissolved, add 4.97-6.21g (36-45mmol) of potassium carbonate and 10-20mL of toluene. Preferably, the optimal addition amounts in this embodiment are 5.24g (38mmol) and 10mL respectively. After stirring evenly, raise the temperature of the reaction system to 120-140°C for 2-6 hours, distill off the water generated in the reaction, and then raise the temperature to 150-170°C for 8...

Embodiment 3

[0043] Example 3: Synthesis of polysulfone-based biphenyl type sulfonated polyethersulfone copolymer C-3 / 2 / 1 and preparation of proton exchange membrane

[0044] Under nitrogen protection and mechanical stirring, add 8.09 g (12 mmol) of 4,4'-bis(4-fluorobenzenesulfonyl-3-sulfonate) biphenyl to a 250 mL dry three-neck flask with a water separator , 4,4'-bis(4-fluorobenzenesulfonyl)biphenyl 2.82g (6mmol), 2,2'-bis(4-hydroxyphenyl)propane 4.10g (18mmol) and 1-methylpyrrolidone 50- 75mL, preferably, the optimal addition amount of this embodiment is respectively 60mL. After the solid is completely dissolved, add 2.02-2.52g (36-45mmol) of potassium hydroxide and 10-20mL of xylene. Preferably, the optimal addition amounts in this embodiment are 2.35g (42mmol) and 15mL respectively. After stirring evenly, raise the temperature of the reaction system to 120-140°C for 2-6 hours, distill off the water generated in the reaction, and then raise the temperature to 150-170°C for 8-24 hours,...

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Abstract

The invention discloses a polysulfone biphenyl sulfonated polyether sulfone, a preparation method thereof and a method for preparing a proton exchange membrane from polysulfone biphenyl sulfonated polyether sulfone. Polysulfone biphenyl sulfonated polyether sulfone is structurally characterized in that a repetitive unit of polysulfone biphenyl sulfonated polyether sulfone contains at least two sulfone groups bridged by biphenyl groups, and sulfonic groups with higher acidity can be introduced into benzene rings connected with the sulfone groups. The obtained polymer has higher molecular weightand good solubility; the preparation process is simple, reaction conditions are easy to control and the method is suitable for industrial production. The proton exchange membrane prepared from polysulfone biphenyl sulfonated polyether sulfone has higher proton conductivity and good fuel cell performance, thereby having potential application prospect.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a polysulfone-based biphenyl type sulfonated polyethersulfone, a preparation method thereof, and a preparation method and application of a proton exchange membrane using the same as a raw material. Background technique [0002] Polyethersulfone is a high-performance thermoplastic material, which belongs to special engineering plastics, and its main chain contains both ether bonds and sulfone groups. Because of its good mechanical properties, thermal properties and chemical stability, it has been widely used in electronic appliances, machinery, automobiles and other fields. The sulfonated polyethersulfone with polyethersulfone as the main chain retains the excellent properties of polyethersulfone to a certain extent, and at the same time has good hydrophilicity and proton conductivity. It has great potential in the fields of membrane separation and proton exchange membranes. Wide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G75/23C08J5/22H01M8/1069H01M8/1027H01M8/1032C08L81/06
CPCY02E60/50Y02P70/50
Inventor 应黎彬房建华陈康成翟凤霞
Owner 南京黑泰催化剂有限公司
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