Polyether sulfone with benzotriazole group as well as preparation method and application of polyether sulfone

A technology of benzotriazole and hydroxybenzotriazole is applied in the fields of polyethersulfone containing benzotriazole group and its preparation and use, and can solve the problems of low proton conductivity, poor thermal stability and the like , to achieve the effect of high proton conductivity, high thermal stability and good thermal stability

Active Publication Date: 2017-12-15
四川冠慕思杨新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The present invention overcomes the disadvantages of relatively low proton conductivity and poor thermal stability of the membrane under high temperature conditions; it provides a polyethersulfone containing benzotriazole group, which contains benzotriazole The polyethersulfone with nitrogen azole group is used as proton exchange membrane, which has high proton conductivity, good chemical stability and thermal stability at high temperature, which can meet the application requirements of proton exchange membrane fuel cell in high temperature environment

Method used

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  • Polyether sulfone with benzotriazole group as well as preparation method and application of polyether sulfone
  • Polyether sulfone with benzotriazole group as well as preparation method and application of polyether sulfone
  • Polyether sulfone with benzotriazole group as well as preparation method and application of polyether sulfone

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Embodiment 1

[0037] The preparation method of polyethersulfone containing benzotriazole groups comprises the following steps: under nitrogen protection, in a three-necked round-bottomed flask equipped with a stirrer, air guide tube, condenser and water separator, add 10mmol 4- Hydroxybenzotriazole, 10mmol 4,4'-difluorodiphenyl sulfone, and 20mmol anhydrous potassium carbonate were used as a base to form a salt agent, and N-methylpyrrolidone (amount of 15mL) was used as a solvent, and toluene (amount of 3mL) was used as a Water-carrying agent, heat up to 130°C and react with water for 5 hours, then distill off toluene, then rapidly raise the temperature to 170°C to continue the reaction for 8 hours; then slowly cool the reaction system to room temperature, pour the reaction solution into deionized water for precipitation, and suction filter. Then extracted with methanol; the extract was dried under vacuum (pressure of 0.1MPa) at 100°C for 10 hours to obtain the target polymer—polyethersulfon...

Embodiment 2

[0043] The preparation method of polyethersulfone containing benzotriazole groups comprises the following steps: under nitrogen protection, in a three-necked round-bottomed flask equipped with a stirrer, air guide tube, condenser and water separator, add 10mmol 4- Hydroxybenzotriazole, 10mmol 4,4'-bis(4-fluoro-phenylsulfone)benzene, 20mmol anhydrous potassium carbonate are used as base to form a salt, and N-methylpyrrolidone (amount of 18mL) is used as a solvent. Toluene (amount of 2mL) is a water-carrying agent, heat up to 140°C and react with water for 4 hours, then distill off the toluene, then rapidly raise the temperature to 180°C to continue the reaction for 6 hours; then slowly cool the reaction system to room temperature, and pour the reaction solution into a deionized Precipitate in water, filter with suction, and extract with methanol; the extract is dried in vacuum (at a pressure of 0.1 MPa) at 100°C for 10 hours to obtain the target polymer—polyethersulfone with a t...

Embodiment 3

[0048] The preparation method of polyethersulfone containing benzotriazole groups comprises the following steps: under nitrogen protection, in a three-necked round-bottomed flask equipped with a stirrer, air guide tube, condenser and water separator, add 10mmol 4- Hydroxytriazole, 10mmol1,3-bis(4-fluoro-phenylsulfone)benzene, 20mmol anhydrous potassium carbonate were used as base to form a salt, N-methylpyrrolidone (amount 13mL) was used as solvent, and toluene (amount 2.5 mL) is a water-carrying agent, heat up to 150°C and react with water for 3 hours, then distill off the toluene, then rapidly raise the temperature to 190°C to continue the reaction for 3 hours; then slowly cool the reaction system to room temperature, and pour the reaction solution into deionized water for precipitation. Suction filtration, and then extraction with methanol; the extract was dried under vacuum (0.1MPa) at 100°C for 10 hours to obtain the target polymer—polyethersulfone with triazole groups, wi...

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Abstract

The invention discloses polyether sulfone with a benzotriazole group, as shown in a formula (I). A preparation method of polyether sulfone with the benzotriazole group comprises the following steps: in the presence of nitrogen, sequentially putting 4-hydroxy benzotriazole, a difluoro monomer with sulfuryl, a salt-forming agent, a solvent and methylbenzene into a reactor, uniformly stirring and mixing, heating to 130-150 DEG C to react for 3-5 hours, steaming out methylbenzene, further heating to 170-190 DEG C to react for 3-8 hours, cooling reacted materials to the room temperature, pouring into deionized water, precipitating, performing suction filtering, further performing extraction on the obtained solid with methanol, and drying the solid product obtained from extraction, thereby obtaining polyether sulfone with the benzotriazole group. Polyether sulfone with the benzotriazole group, which is disclosed by the invention, is high in thermal stability and chemical stability and excellent in dissolubility, and a transparent high-strength film with relatively high proton conductivity can be prepared and can be applied to fields such as high-temperature proton exchange film fuel batteries, optoelectronic devices and electrode materials.

Description

technical field [0001] The invention belongs to macromolecular compounds and their preparation and use, and relates to polyethersulfone containing benzotriazole groups and its preparation method and use. The macromolecular material of the present invention—polyethersulfone containing benzotriazole groups—can be made into a transparent high-strength film, which is used in the fields of high-temperature proton exchange membranes (fuel cells), optoelectronic devices, electrode materials, and the like. Background technique [0002] With the development of human society, the consumption of earth resources is gradually accelerating, and various non-renewable resources are facing the embarrassment of resource scarcity. Therefore, people are committed to finding and developing new resources, and proton exchange membrane fuel cells have been favored by researchers in recent years. Proton exchange membrane fuel cell is an energy conversion device that directly converts chemical energ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G75/23C08J5/22C08L81/06
CPCC08G75/23C08J5/2256C08J2381/06
Inventor 杨莉常冠军王凯莉
Owner 四川冠慕思杨新材料科技有限公司
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