Ultraviolet-induced gradient distribution POSS microsphere/polyarylether sulfuryl composite proton exchange membrane and preparation method thereof

A gradient distribution, sulfonated polyaryl ether sulfone technology, applied in the field of proton exchange membranes, can solve the problems of PEM proton conductivity decrease and swelling rate increase, and achieve good interfacial compatibility, reduce swelling, and shorten the time period Effect

Active Publication Date: 2020-06-19
江苏艾合复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to avoid the deficiencies of the prior art, the present invention proposes a UV light-induced gradient distribution POSS microsphere / polyaryl ether sulfone-based composite proton exchange membrane and its preparation method to solve the problems caused by the different reaction characteristics of the cathode and anode of the proton exchange membrane. Problems with PEM Proton Conductivity Decrease and Swell Ratio Increase

Method used

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  • Ultraviolet-induced gradient distribution POSS microsphere/polyarylether sulfuryl composite proton exchange membrane and preparation method thereof
  • Ultraviolet-induced gradient distribution POSS microsphere/polyarylether sulfuryl composite proton exchange membrane and preparation method thereof
  • Ultraviolet-induced gradient distribution POSS microsphere/polyarylether sulfuryl composite proton exchange membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Preparation of nano-octa-MAPOSS microspheres / sulfonated polyarylethersulfone membrane with gradient distribution induced by ultraviolet light:

[0052] Prepare a 0.4g / mL sulfonated polyarylethersulfone solution with DMF as a solvent, add 2.5% TPO by mass fraction, and 15% octa-MAPOSS into the prepared sulfonated polyarylethersulfone solution respectively. Mix evenly at 25°C and 50% RH, and make a film by scraping. Expose the scraped film to a 32W UV lamp for 30 minutes, and finally place it in a vacuum oven at 40°C until the solvent is completely evaporated. The thickness of the liquid film is controlled at 200±5 μm, and the thickness of the dried film is 30±5 μm.

Embodiment 2

[0054] Preparation of nano-octa-MAPOSS microspheres / sulfonated polyarylethersulfone membrane with gradient distribution induced by ultraviolet light:

[0055] Prepare a 0.4g / mL sulfonated polyarylethersulfone solution with DMF as a solvent, add TPO with a mass fraction of 5%, and 15% octa-MAPOSS into the prepared sulfonated polyarylethersulfone solution respectively. Mix evenly at 25°C and 50% RH, and make a film by scraping. Expose the scraped film to a 32W UV lamp for 30 minutes, and finally place it in a vacuum oven at 40°C until the solvent is completely evaporated. The thickness of the liquid film is controlled at 200±5 μm, and the thickness of the dried film is 30±5 μm.

Embodiment 3

[0057] Preparation of nano-octa-MAPOSS microspheres / sulfonated polyarylethersulfone membrane with gradient distribution induced by ultraviolet light:

[0058] Prepare a 0.4g / mL sulfonated polyarylethersulfone solution with DMF as a solvent, add 2.5% TPO by mass fraction, and 15% octa-MAPOSS into the prepared sulfonated polyarylethersulfone solution respectively. Mix evenly at 25°C and 50% RH, and make a film by scraping. Expose the scraped film to a 32W UV lamp for 30 minutes, and finally place it in a vacuum oven at 40°C until the solvent is completely evaporated. The thickness of the liquid film is controlled at 150±5 μm, and the thickness of the dried film is 25±5 μm.

[0059] The performance data measured by the film made by the above examples are shown in the following table:

[0060]

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Abstract

The invention relates to an ultraviolet-induced gradient distribution POSS microsphere/polyarylether sulfuryl composite proton exchange membrane and a preparation method thereof. Pure polysulfone withhigh sulfonation degree is used as a matrix, the surface of the matrix is scrape-coated with an otca-MAPOSS (octamethylacryloyloxypropyl POSS)/sulfonated polyether sulphone composite coating, the particle sizes of the POSS nano microspheres in the coating are distributed in a gradient manner along with the thickness, so that the composite proton exchange membrane with good interfacial compatibility and a sandwich structure is prepared, and the swelling rate of a high-sulfonation-degree sulfonated polyarylether matrix under high-temperature and high-humidity conditions is favorably reduced. The preparation method is simple, the time period is short, an existing commercial membrane can be subjected to post-treatment modification, and large-scale commercial production is facilitated.

Description

technical field [0001] The invention belongs to the field of proton exchange membranes, and relates to an ultraviolet light-induced gradient distribution POSS microsphere / polyaryl ether sulfone-based composite proton exchange membrane and a preparation method. Background technique [0002] A proton exchange membrane fuel cell (PEMFC) generally consists of a bipolar plate, a gas diffusion layer, a catalyst layer, and a proton exchange membrane (PEM). The anode of the fuel cell generally chooses to pass through the humidified H 2 As a fuel, under the action of a catalyst, the H obtained by oxidizing and losing electrons + Transported to the cathode through the PEM, O 2 reduction to produce water. During the operation of the entire fuel cell, protons are transported from the cathode to the anode through the hydrophilic groups in the PEM, and the proton conductivity is proportional to the power density and energy of the battery, so the proton conductivity of the PEM is relate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/06C08L83/07C08J5/18C08J3/28C08J7/04C09D181/06C09D183/07C09D7/65H01M8/1032H01M8/1072
CPCC08J5/18C08J3/28C08J7/042C09D181/06C09D7/65C09D7/70H01M8/1032H01M8/1072C08J2381/06C08J2483/06C08J2481/06Y02E60/50Y02P70/50
Inventor 陈芳董文洁林锋马晓燕
Owner 江苏艾合复合材料有限公司
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