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Sulfonated polyarylether or thioether oxygen phosphate and fluorine-containing resin blended proton exchange membrane and preparation method thereof

A technology of proton exchange membrane and sulfonated polyarylether, which is applied in the field of blended membrane containing sulfonated polyarylether or thioether phosphine oxide and fluorine-containing resin and its preparation, can solve the problems of membrane deformation, membrane loss of mechanical properties, The problem of high membrane swelling rate and other problems can be achieved to reduce the swelling rate and methanol permeability, improve the stability of oxidation resistance, and improve the overall performance.

Inactive Publication Date: 2018-06-15
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] But the proton exchange membrane in this prior art is similar to other sulfonated aromatic proton exchange membranes, when the ion exchange capacity is bigger, under the higher situation of temperature, although the electrical conductivity of membrane is higher, but the swelling rate of membrane If it is too large, it will cause the deformation of the membrane and make the membrane lose its mechanical properties, thus limiting the application of the membrane in fuel cells

Method used

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  • Sulfonated polyarylether or thioether oxygen phosphate and fluorine-containing resin blended proton exchange membrane and preparation method thereof
  • Sulfonated polyarylether or thioether oxygen phosphate and fluorine-containing resin blended proton exchange membrane and preparation method thereof
  • Sulfonated polyarylether or thioether oxygen phosphate and fluorine-containing resin blended proton exchange membrane and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Preparation of sPEPOF80 / PVDF4.0 blend membrane

[0026] The weight content of PVDF in the blend of sulfonated polyarylether phosphine oxide sPEPOF80 and PVDF was adjusted to 4%. Dissolve PVDF with a mass fraction of 4% and sPEPOF80 with a mass fraction of 96% in NMP solvent respectively. After they are completely dissolved, mix the two solutions, shake them several times to make them evenly mixed, and place them in an oven at 65°C. Slowly pour the blended solution onto a horizontal, clean glass plate (6×6 cm), and bake at 65°C for 36 hours to evaporate the solvent. After cooling to room temperature, immerse the glass plate with the film in deionized water, and the film will fall off naturally, giving Pale yellow transparent homogeneous blend film.

[0027] Implementation effect: see the infrared spectrum of sPEPOF80 / PVDF4.0 figure 1 , the characteristic absorption peak of the film is: 1163cm -1 (P=O), 1104cm -1 、1032cm -1 , 617cm -1 (Ar-SO 3 H), 1203cm -1 (Hexaf...

Embodiment 2

[0029] Preparation of sPEPOF90 / PVDF4.5 blend membrane

[0030] The weight content of PVDF in the blend of sPEPOF90 and PVDF was adjusted to 4.5%. Dissolve PVDF with a mass fraction of 4.5% and sPEPOF90 with a mass fraction of 95.5% in NMP solvent respectively. After they are completely dissolved, mix the two solutions, shake them several times to make them evenly mixed, and place them in an oven at 65°C. Slowly pour the blended solution onto a horizontal, clean glass plate (6×6 cm), and bake at 65°C for 36 hours to evaporate the solvent. After cooling to room temperature, immerse the glass plate with the film in deionized water, and the film will fall off naturally, giving Pale yellow transparent homogeneous blend film.

[0031] Implementation effect: see the infrared spectrum of sPEPOF90 / PVDF4.5 figure 1 , the characteristic absorption peak of the film is: 1163cm -1 (P=O), 1104cm -1 、1032cm -1 , 617cm -1 (Ar-SO 3 H), 1203cm -1 (Hexafluoroisopropyl), 1400cm -1 , 1101c...

Embodiment 3

[0033] Preparation of sPEPOF100 / PVDF5.0 blend membrane

[0034] The weight content of PVDF in the blend of sPEPOF100 and PVDF was adjusted to 5%. Dissolve PVDF with a mass fraction of 5% and sPEPOF100 with a mass fraction of 95% in NMP solvent respectively. After they are completely dissolved, mix the two solutions, shake them several times to make them evenly mixed, and place them in an oven at 65°C. Slowly pour the blended solution onto a horizontal, clean glass plate (6×6 cm), and bake at 65°C for 36 hours to evaporate the solvent. After cooling to room temperature, immerse the glass plate with the film in deionized water, and the film will fall off naturally, giving Pale yellow transparent homogeneous blend film.

[0035] Implementation effect: see the infrared spectrum of sPEPOF100 / PVDF5.0 figure 1 , the characteristic absorption peak of the film is: 1163cm -1 (P=O), 1104cm -1 、1032cm -1 , 617cm -1 (Ar-SO 3 H), 1203cm -1 (Hexafluoroisopropyl), 1400cm -1 , 1101cm ...

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Abstract

The invention belongs to the technical field of a high molecular material and a fuel cell, and particularly relates to a sulfonated polyarylether or thioether oxygen phosphate and fluorine-containingresin blended proton exchange membrane and a preparation method thereof. The proton exchange membrane comprises the constituents based on percent by mass: 90-98% of sulfonated polyarylether or thioether oxygen phosphate and 2-10% of fluorine-containing resin. The invention also provides the preparation method of the blended proton exchange membrane. According to the method, the blended proton exchange membrane is prepared by synthesizing a polyarylether or thioether oxygen phosphate polymer containing a sulfonic acid group directly by a condensation polymerization method and then reacting withthe fluorine-containing resin by a solution blended process. In the blended proton exchange membrane, the membrane swelling and methyl alcohol permeability can be reduced with the addition of the hydrophobic fluorine-containing resin, the oxidization-resistant stability is improved, and meanwhile, relatively high proton conductivity is maintained.

Description

technical field [0001] The invention relates to the technical field of fuel cell proton exchange membranes, in particular to a blended membrane containing sulfonated polyarylether or thioether phosphine oxide and fluorine-containing resin and a preparation method thereof. Background technique [0002] Sulfonated aromatic polymers are considered to be excellent proton exchange membrane materials due to their high thermal stability, chemical stability and proton conductivity. Among them, the sulfonated polyarylether or thioether phosphine oxide proton exchange membrane, because the triphenylphosphine oxide group contained in it has strong water absorption and moisture retention, and adhesion with inorganic or polymer materials, has shown great It has excellent performance and has potential application value in the field of fuel cells. [0003] After searching the prior art, it was found that "Synthesis and properties of sulfonated poly(aryleneether phosphine oxide)s for proto...

Claims

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Application Information

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IPC IPC(8): H01M8/1051H01M8/1044H01M8/1069H01M8/1088
CPCH01M8/1044H01M8/1051H01M8/1069H01M8/1088Y02E60/50
Inventor 程言营廖慧英肖繁花
Owner SHANGHAI INST OF TECH