Method for manufacturing integrated sheet
A manufacturing method and sheet technology, applied in the direction of final product manufacturing, sustainable manufacturing/processing, electrochemical generator, etc., can solve problems such as insufficient curing, and achieve the effect of excellent productivity
Active Publication Date: 2019-10-11
TOYOTA JIDOSHA KK
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Problems solved by technology
However, it has been found that when the irradiation intensity is increased, even if the ultraviolet rays irradiated to the ultraviolet curing adhesive reach the predetermined cumulative light intensity, there are cases where the curing is insufficient.
Method used
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Embodiment Construction
[0023] First, refer to Figure 1A ~ Figure 1E The outline of the manufacturing method of the integrated sheet in which the resin frame is bonded to the membrane electrode gas diffusion layer assembly according to this embodiment will be described. Figure 1A -E is a schematic process diagram which shows an example of the manufacturing method of this embodiment. also, Figure 1A -E is a schematic sectional view of the joint part of an integrated sheet. Figure 1A The method of manufacturing an integrated sheet shown in the examples of to E includes the step of preparing a laminate in which a gas diffusion layer 12 is laminated on at least one surface of a membrane electrode assembly (MEA) 11 ( Figure 1A ); the process of coating the ultraviolet curable adhesive 13 on the above-mentioned laminated body ( Figure 1B ); the process of disposing the resin frame 14 on the above-mentioned ultraviolet curing adhesive 13 and pressurizing it ( Figure 1C ); and the irradiation process ...
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Abstract
A method for manufacturing an integrated sheet of a MEGA and a resin frame, capable of curing a UV curable adhesive in a short time by suppressing an inhibition of curing of the UV curable adhesive and thereby providing excellent productivity is provided. A manufacturing method for an integrated sheet in which a resin frame is bonded to a MEGA, includes preparing a laminate in which a gas diffusion layer is laminated on at least one surface of a MEA, applying a coating of an UV curable adhesive to the laminate; placing a resin frame on the UV curable adhesive and applying a pressure to the frame, and irradiating the UV curable adhesive with ultraviolet rays, in which the irradiating includes a first irradiation step, and a second irradiation step in which ultraviolet rays are applied withirradiation intensity higher than irradiation intensity in the first irradiation step.
Description
technical field [0001] The present invention relates to a method for manufacturing an integrated sheet of a membrane electrode gas diffusion layer assembly and a resin frame used in a fuel cell. Background technique [0002] As a membrane electrode gas diffusion layer assembly (MEGA: Membrane Electrode Gas diffusion layer Assembly) for a fuel cell, an integrated sheet having a frame-shaped resin frame at the periphery of the MEGA is known. [0003] Japanese Patent Application Laid-Open No. 2007-287608 discloses a fuel cell in which a fuel cell sealing plate and a separator are fixed with an adhesive, and an example using an ultraviolet-curable adhesive is disclosed as the adhesive. [0004] In general, for ultraviolet curing adhesives, by irradiating a predetermined integrated light amount [mJ / cm2] according to the material 2 ](=irradiation intensity [mW / cm 2 ]×irradiation time [sec]) to achieve curing. From the viewpoint of improving productivity, the present inventors h...
Claims
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IPC IPC(8): H01M4/88H01M8/0273H01M8/1004
CPCH01M8/0273H01M8/1004H01M4/8875H01M2008/1095Y02P70/50Y02E60/50B29C65/1406B29C65/1606B29C65/4845
Inventor 木下克彦
Owner TOYOTA JIDOSHA KK