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Pressure-sensitive adhesive sheet for conveying electrolyte membrane and method using said pressure-sensitive adhesive sheet to manufacture fuel-cell membrane electrode assembly

An electrolyte membrane, manufacturing method technology, used in fuel cells, film/sheet adhesives, final product manufacturing, etc.

Inactive Publication Date: 2016-05-25
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These phenomena become noticeable during high-speed processing, and are especially problematic in mass production and high-speed production.

Method used

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  • Pressure-sensitive adhesive sheet for conveying electrolyte membrane and method using said pressure-sensitive adhesive sheet to manufacture fuel-cell membrane electrode assembly
  • Pressure-sensitive adhesive sheet for conveying electrolyte membrane and method using said pressure-sensitive adhesive sheet to manufacture fuel-cell membrane electrode assembly
  • Pressure-sensitive adhesive sheet for conveying electrolyte membrane and method using said pressure-sensitive adhesive sheet to manufacture fuel-cell membrane electrode assembly

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0140] Figure 4 It is a figure for demonstrating the outline|summary of the manufacturing method of the fuel cell membrane / electrode assembly based on 1st Embodiment of this invention. In this first embodiment, a membrane / electrode complex 300 including the first gas diffusion electrode 20 , the polymer electrolyte membrane 10 and the second gas diffusion electrode 30 can be produced.

[0141] Preferably, as the first step, the laminate described in item E including the above-mentioned adhesive sheet 100 for transporting electrolyte membranes and the polymer electrolyte membrane 10 on the adhesive sheet 100 is prepared in the form of a roll, and discharged from the roll. The stack.

[0142] Next, as a second step, the first gas diffusion electrode 20 is laminated on the surface of the polymer electrolyte membrane 10 opposite to the pressure-sensitive adhesive sheet 100 . The gas diffusion electrode used in the present invention is not particularly limited, and any appropria...

no. 2 Embodiment approach

[0153] Figure 5 It is a figure for demonstrating the outline of the manufacturing method of the fuel cell membrane / electrode assembly based on the 2nd Embodiment of this invention. In the second embodiment, a membrane / electrode complex including the first gas diffusion electrode 20', the polymer electrolyte membrane 10, and the second gas diffusion electrode in this order can be manufactured. In the second embodiment, the first gas diffusion electrode 20' includes a catalyst layer 21 and a gas diffusion layer 22 in this order from the polymer electrolyte membrane 10 side. In addition, the second gas diffusion electrode may include a catalyst layer and a gas diffusion layer. It should be noted that, in Figure 5 In the drawing, the process up to the formation of the first gas diffusion electrode 20' in the manufacturing method of the fuel cell membrane / electrode assembly is shown.

[0154] Also in this embodiment, as the first step, the laminate described in item E includin...

Embodiment 1

[0173] (Preparation of material for adhesive layer formation)

[0174] Put methacrylic acid into the experimental apparatus for polymerization equipped with a 1L round-bottom detachable flask, detachable hood, separatory funnel, thermometer, nitrogen gas introduction tube, Liebig condenser, vacuum seal, stirring rod, and stirring blades 100 parts by weight of lauryl ester (manufactured by Kao Corporation, trade name "EXCEPARLL-MA"), 10.2 parts by weight of 2-hydroxyethyl methacrylate (manufactured by Mitsubishi Rayon Corporation, trade name "ACRYESTERHO"), As a polymerization initiator, 0.22 parts by weight of 2,2'-azobisisobutyronitrile (manufactured by Kishida Chemical Co., Ltd.) and 55 parts by weight of toluene were used to prepare a mixture.

[0175] While stirring the mixture, the inside of the round-bottomed separable flask was replaced with nitrogen at normal temperature. Then, the mixture was stirred at a temperature of 60° C.±2° C. for 12 hours while flowing nitroge...

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Abstract

This invention provides a pressure-sensitive adhesive sheet for conveying an electrolyte membrane. When processing a membrane electrode assembly (MEA), said pressure-sensitive adhesive sheet can contribute to making it easier to handle a polymer electrolyte membrane being conveyed and preventing deformation and wrinkling of said polymer electrolyte membrane. This pressure-sensitive adhesive sheet for conveying an electrolyte membrane comprises a substrate and a pressure-sensitive adhesive layer positioned on one or both surfaces of said substrate. The pressure-sensitive adhesive layer(s) partially or completely lose(s) adhesiveness upon an external stimulus. In one embodiment, the pressure-sensitive adhesive layer(s) contain(s) thermally expandable microspheres.

Description

technical field [0001] The present invention relates to a pressure-sensitive adhesive sheet for transporting an electrolyte membrane and a method for producing a fuel cell membrane / electrode assembly using the pressure-sensitive adhesive sheet. Background technique [0002] Generally, a membrane / electrode assembly (MEA), which is a component of a fuel cell, is a laminate formed of a polymer electrolyte membrane, a gas diffusion electrode, and the like. From the viewpoints of production efficiency and production cost, etc., the membrane / electrode complex of such a laminate structure needs to be laminated and manufactured by a continuous method. As a continuous production method, the following method is known: a method of forming a catalyst layer by coating on both sides of a long polymer electrolyte membrane and laminating a gas diffusion layer on the catalyst layer; A method of laminating a gas diffusion electrode having a catalyst layer on both sides of a polymer electroly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1004C09J7/02C09J7/38
CPCC09J2421/00C09J2433/00H01M2008/1095C09J7/38B32B27/32H01M8/1004B32B7/12B32B5/022B32B5/024B32B5/18B32B27/12B32B27/10B32B5/26B32B15/08B32B25/08B32B25/10B32B27/065B32B5/245B32B29/007B32B29/005B32B27/08B32B15/14B32B25/06B32B27/36B32B27/306B32B27/34B32B27/281B32B27/28B32B27/288B32B27/286B32B2262/065B32B2262/0276B32B27/304B32B2262/0253B32B2307/306B32B2307/732B32B2457/18C09J2301/412C09J2301/502Y02P70/50Y02E60/50C09J201/00B32B27/16C09J2203/33C09J2423/006H01M8/1023H01M8/1039
Inventor 仲野武史佐藤司正木敏明西井弘行松村健有满幸生
Owner NITTO DENKO CORP
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