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Mineral-doped fluor-containing cross-linking ion exchanger membrane and method for preparing same

A technology of ion-exchange membrane and ion-exchange resin, which is applied in the direction of flat products, final product manufacturing, and other household appliances, and can solve the problems of not improving the dimensional stability and conductance of the membrane at the same time

Active Publication Date: 2008-12-31
SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] However, the above patents only improved the performance of one aspect of the membrane, and did not simultaneously improve the dimensional stability of the membrane and the conductivity under high temperature and low humidity.

Method used

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  • Mineral-doped fluor-containing cross-linking ion exchanger membrane and method for preparing same
  • Mineral-doped fluor-containing cross-linking ion exchanger membrane and method for preparing same
  • Mineral-doped fluor-containing cross-linking ion exchanger membrane and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] will repeat unit

[0076]

[0077] The polymer (EW=1200) and Zr(HPO 4 ) 2 , with a diameter of 0.008 μm, mixed at 100:5, then added a small amount of perfluoromalonyl peroxide, hot-pressed to form a film, and then placed the film in H with a molar concentration of 0.5M 2 SO 4 The solution was boiled for 1 hour and washed with deionized water. After heat treatment, the membrane is treated with alkaline solution and acid solution to obtain a 50 μm perfluorosulfonic acid cross-linked doped ion membrane.

Embodiment 2

[0079] In Example 1, 1,2-diiodotetrafluoroethane, and SiO 2 (diameter 0.03 μm, mass ratio to perfluorosulfonic acid resin is 15:100), mixed with perfluorosuberoyl peroxide, heat-treated at 100° C. for 45 minutes, and melt-extruded to obtain a film with a thickness of 100 μm. Finally, the membrane is treated with alkaline solution and acid solution to obtain a perfluorosulfonic acid cross-linked doped ion membrane.

Embodiment 3

[0081] The polymer hydrogen form of embodiment 1 and H 3 PW 12 o 40 A 7% polymer ethylene glycol solution was prepared at a ratio of 100:1, and a 30 μm film was prepared by casting at 170° C. for 60 minutes. Then the membrane was cross-linked by 50KGy radiation, and then the membrane was treated with KOH alkaline solution and HCl acid solution to obtain a 60 μm perfluorosulfonic acid cross-linked doped ion membrane.

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Abstract

The invention relates to an inorganically doped fluorin-containing ion exchange membrane and a preparation method thereof, belonging to the field of functional macromolecule composite material. The fluorin-containing ion exchange membrane takes fluorin-containing ion exchange resin which has crosslinking sites as the membrane forming resin and at the same time is doped with inorganic matter; under certain conditions, the materials have cross linking reaction to produce a meshwork doped fluorin-containing ion exchange. The ion exchange membrane prepared through the method of the invention is of high protonic conductivity and size stability.

Description

technical field [0001] The invention belongs to the field of functional polymer composite materials, and relates to a fluorine-containing ion exchange membrane and a preparation method thereof. Background technique [0002] Proton exchange membrane fuel cell is a power generation device that directly converts chemical energy into electrical energy by electrochemical means, and is considered to be the preferred clean and efficient power generation technology in the 21st century. Proton exchange membrane (proton exchange membrane, PEM) is the key material of proton exchange membrane fuel cell (proton exchange membrane fuel cell, PEMFC). [0003] Although the currently used perfluorosulfonic acid proton exchange membrane has been used for many years, there are still some shortcomings that cannot meet the requirements of commercialization, such as low proton conductivity at high temperature, poor dimensional stability, and low mechanical strength. Especially in terms of dimensi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/12C08K3/00C08J3/24C08J3/28C08J5/22C08K5/14C08K3/32C08K5/02C08K3/36H01M8/10B29B7/00B29C47/00B29C43/00B29C35/02B29K27/12B29L7/00H01M8/1039H01M8/1069
CPCY02E60/50Y02P70/50
Inventor 张永明王军唐军柯王汉利
Owner SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
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