SPEEK (sulfonated poly (ether ether ketone)) proton exchange membrane material with epoxy resin interpenetrating polymer network and preparation method of SPEEK proton exchange membrane material

A technology for sulfonated polyether ether ketone and proton exchange membrane, which is applied in the field of epoxy resin semi-interpenetrating network sulfonated polyether ether ketone proton exchange membrane material and its preparation field, and can solve the problem of high proton conductivity, low power density, Shortened battery life and other problems, to achieve the effect of low preparation cost, good alcohol resistance and moderate conductivity

Inactive Publication Date: 2015-09-09
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the late 1960s, polystyrene sulfonic acid membrane was first used in PEMFC, but styrene sulfonic acid material has some fatal defects as a proton exchange membrane. It is prone to degradation during use, which not only shortens the battery life , The power density is low, and it also pollutes the generated water of the battery, making it impossible for astronauts to use
However, the SPEEK membrane with a high degree of sulfonation (DS>90%) has a higher proton conductivity, while the alcohol permeability coefficient and water swelling rate are higher, and even fail due to excessive swelling; while the SPEEK membrane with a low degree of sulfonation (DS<40%) ) SPEEK membrane has excellent alcohol resistance and water swelling resistance, but the proton conductivity is low, far inferior to Nafion membrane

Method used

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  • SPEEK (sulfonated poly (ether ether ketone)) proton exchange membrane material with epoxy resin interpenetrating polymer network and preparation method of SPEEK proton exchange membrane material
  • SPEEK (sulfonated poly (ether ether ketone)) proton exchange membrane material with epoxy resin interpenetrating polymer network and preparation method of SPEEK proton exchange membrane material
  • SPEEK (sulfonated poly (ether ether ketone)) proton exchange membrane material with epoxy resin interpenetrating polymer network and preparation method of SPEEK proton exchange membrane material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Dissolve (1.7000g, 0.0050mol) of SPEEK (sulfonation degree 75) in 30mL of DMAc solvent in a 100mL three-necked flask equipped with magnetic rotor stirring, condenser, and thermometer, turn on the magnetic stirring, oil Heating the heating bath to 60°C to prepare a membrane-forming solution;

[0024] (2) Dissolve (0.39848g, 0.001mol) epoxy resin in DMAc solvent, ultrasonically disperse for 4-6 hours, add (0.04656ml) diethylenetriamine, inert atmosphere protection, stir at room temperature for 15-20 hours, 120 Mechanically stir the reaction at ~160°C for 0.5-1 hour.

[0025] (3) Pour the film-making solution obtained in step (2) into the glass mold cavity before cooling, dry at 50-60°C for 10-15 hours, then rise to 100°C and dry for 4-6 hours, remove the solvent, and wait After it is naturally cooled to room temperature, the film is peeled off to obtain an epoxy resin semi-interpenetrating network sulfonated polyether ether ketone proton exchange membrane material. ...

Embodiment 2

[0049] (1) Dissolve (3.4000g, 0.0100mol) of SPEEK (sulfonation degree 75) in 30mL of DMAc solvent in a 100mL three-neck flask equipped with magnetic rotor stirring, condenser, and thermometer, turn on the magnetic stirring, and the oil Heating the heating bath to 100°C to prepare a membrane-forming solution;

[0050] (2) Dissolve (0.39848g, 0.001mol) epoxy resin in DMAc solvent, ultrasonically disperse for 4-6 hours, add (0.04656ml) diethylenetriamine, inert atmosphere protection, stir at room temperature for 15-20 hours, 120 Mechanically stir the reaction at ~160°C for 0.5-1 hour.

[0051] (3) Pour the film-making solution obtained in step (3) into the glass mold cavity before cooling, dry at 50-60°C for 10-15 hours, then rise to 100°C and dry for 4-6 hours, remove the solvent, and wait After it is naturally cooled to room temperature, the membrane is peeled off to obtain a semi-interpenetrating network p-aminobenzenesulfonic acid graphene oxide doped sulfonated polyether et...

Embodiment 3

[0060] (1) Dissolve (2.0400g, 0.0060mol) of SPEEK (sulfonation degree 75) in 30mL of DMAc solvent in a 100mL three-neck flask equipped with magnetic rotor stirring, condenser, and thermometer, turn on the magnetic stirring, and the oil Heating the heating bath to 100°C to prepare a membrane-forming solution;

[0061] (2) Dissolve (0.79696g, 0.002mol) epoxy resin in DMAc solvent, ultrasonically disperse for 4-6 hours, add (0.04656ml) diethylenetriamine, inert atmosphere protection, stir at room temperature for 15-20 hours, 120 Mechanically stir the reaction at ~160°C for 0.5-1 hour.

[0062] (3) Pour the film-making solution obtained in step (2) into the glass mold cavity before cooling, dry at 50-60°C for 10-15 hours, then rise to 100°C and dry for 4-6 hours, remove the solvent, and wait After it is naturally cooled to room temperature, the film is peeled off to obtain an epoxy resin semi-interpenetrating network sulfonated polyether ether ketone proton exchange membrane mate...

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Abstract

The invention relates to an SPEEK (sulfonated poly (ether ether ketone)) proton exchange membrane material with an epoxy resin interpenetrating polymer network and a preparation method of the SPEEK proton exchange membrane material. The proton exchange membrane material is structurally characterized in that the epoxy resin forms a cross-linked network structure, and SPEEK is taken as a long chain penetrating through the network. According to the SPEEK proton exchange membrane material, SPEEK with higher degree of sulfonation is adopted as a base material, under the assistance of the cross-linking reaction of the epoxy resin, the defects of overhigh water absorption rate and poorer composite membrane stability of SPEEK with overhigh degree of sulfonation are overcome, certain mechanical strength and good methanol resistance of a composite membrane are guaranteed, and the dimensional stability and the water swelling resistance of the proton exchange membrane are improved.

Description

technical field [0001] The invention relates to an epoxy resin semi-interpenetrating network sulfonated polyether ether ketone proton exchange membrane material and a preparation method thereof. Background technique [0002] Today, when the main task is to promote green development, circular development, and low-carbon development, it has become an inevitable trend of scientific research to improve energy utilization efficiency and develop clean energy. Fuel cell (DMFC) has been developed and applied in many fields due to its environmental protection, energy saving, high efficiency, and convenient use. [0003] In the fuel cell, the proton exchange membrane is the core component of the MEA. In terms of the selection of materials used, the research is mainly carried out from the aspects of proton conductivity, chemical stability, and mechanical properties. In the late 1960s, polystyrene sulfonic acid membrane was first used in PEMFC, but styrene sulfonic acid material has so...

Claims

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Application Information

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IPC IPC(8): C08L61/16C08L63/00C08G59/50C08J5/22
Inventor 郭强余舟黄英东徐放翟盼刘隽毕宸洋刘海彬
Owner SHANGHAI UNIV
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