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Vacuum flow-casting film forming machine and method for preparing composite proton interchange membrane

A technology of proton exchange membrane and cast film formation, which is applied in the field of preparation of laminated composite proton exchange membranes, can solve the problems of composite proton exchange membranes such as easy curling and deformation, high gas permeability, etc., and achieve improved stability and good composite structure Effect

Active Publication Date: 2011-05-18
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved by the present invention is to overcome the shortcomings of existing composite proton exchange membranes, which are easy to curl and deform and have high gas permeability, and provide a vacuum cast film forming machine for preparing composite proton exchange membranes

Method used

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  • Vacuum flow-casting film forming machine and method for preparing composite proton interchange membrane
  • Vacuum flow-casting film forming machine and method for preparing composite proton interchange membrane
  • Vacuum flow-casting film forming machine and method for preparing composite proton interchange membrane

Examples

Experimental program
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Effect test

Embodiment 1

[0076] 1. Take the DuPont perfluorosulfonic acid solution product DE520 and pour it into a beaker, put it in a blast drying oven, and dry it at 80°C for 10 hours to obtain "reprocessed perfluorosulfonic acid resin";

[0077] 2. Take 10 grams of "reprocessed perfluorosulfonic acid resin" and add it to the autoclave, then add 200ml of ethanol, close the autoclave, control the temperature at 180°C, and keep it warm for 5 hours to obtain a perfluorosulfonic acid ethanol solution.

[0078] 3. Open the top cover 801 of the vacuum casting film-forming device, then bind the PTFE microporous membrane with a thickness of 15 microns, a porosity of 80%, and a pore diameter of 0.1 micron on the film-forming disc 7, and place it as a whole on a On the PET release film, be placed on the heat conduction plate 103 of incubator 1 together;

[0079] 4. Cover the top cover 801 to seal the entire vacuum device. After adding an appropriate amount of 5 wt% perfluorosulfonic acid / ethanol solution in ...

Embodiment 2

[0088] 1. Take the DuPont perfluorosulfonic acid solution product DE520 and pour it into a beaker, put it in a blast drying oven, and dry it at 80°C for 10 hours to obtain "reprocessed perfluorosulfonic acid resin";

[0089] 2. Take 20 grams of "reprocessed perfluorosulfonic acid resin" and put it into the autoclave, then add 200ml of propanol, close the autoclave, control the temperature at 180°C, and keep it warm for 5 hours to obtain a perfluorosulfonic acid ethanol solution.

[0090] 3. Open the top cover 801 of the vacuum casting film-forming device, and then place a PTFE microporous membrane with a thickness of 40 microns, a porosity of 90%, and a pore diameter of 1 micron on the film-forming disc 7, and place it as a whole on a On the PET release film, be placed on the heat conduction plate 103 of incubator 1 together;

[0091] 4. Cover the top cover 801 to make the whole vacuum device sealed, add an appropriate amount of 10wt% perfluorosulfonic acid / propanol solution i...

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Abstract

The invention discloses a new composite proton exchanging film with laminating structure, which comprises the following parts: vacuum doctor-blade casting process filming machine, heat temperature-controlling device, filming disc on the heat temperature-controlling device, leveling device to adjust filming disc and vacuum device, wherein the filming disc is placed into vacuum device. The making method of composite proton exchanging film comprises the following steps: a. dissolving ion exchange material into solvent to make the dispersing liquid; b. proceeding vacuum doctor-blade casting process for the dispersing liquid on the macromolecular pore film; c. making composite single-layer film through heating the evaporating solvent; d. pressing composite single-layer film; cooling; obtainingthe product with film-electrode stability.

Description

technical field [0001] The invention relates to a vacuum casting film forming machine and a method for preparing a composite proton exchange membrane, in particular to a method for preparing a laminated composite proton exchange membrane formed of a microporous membrane and a perfluorosulfonic acid resin. Background technique [0002] A fuel cell is an energy conversion device that converts chemical energy stored in fuels (such as hydrogen, lower alcohols, etc.) and oxidants (oxygen) into electrical energy according to electrochemical principles. [0003] Fuel cells have the advantages of high energy conversion rate and environmental friendliness, while Proton Exchange Membrane Fuel Cell (PEMFC) has the advantages of low-temperature operation and high specific power, so PEMFC is not only suitable for building decentralized power plants, but also for For mobile power sources, such as electric vehicles, submarines, etc., it is a new type of mobile power source for military and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/22B01D67/00B01D69/12H01M4/94H01M8/10H01M8/1069
CPCY02E60/521Y02E60/50Y02P70/50
Inventor 杨新胜董俊卿
Owner BYD CO LTD