Method for improving stability of fuel cell proton exchange membrane frame surface adhesive

A proton exchange membrane and fuel cell technology, which is used in fuel cell components, fuel cells, circuits, etc., can solve the problems of high temperature resistance, low temperature resistance and poor medium resistance, and achieve high temperature resistance, environmental protection and convenient cleaning. The effect of improving the bond strength

Inactive Publication Date: 2020-08-07
SHANGHAI SHENLI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for improving the stability of the adhesive on the surface of the fuel cell proton ex

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for improving the stability of the adhesive on the surface of the proton exchange membrane frame of a fuel cell, using a silica gel adhesive as an adhesive, and applying a primer to treat the surface of the proton exchange membrane frame of the battery to form a high surface energy bonding surface , the bonding surface is bonded with a silicone adhesive.

[0028] The method of primer treatment is as follows: spray the primer on the surface of the battery proton exchange membrane frame, wait for the solvent of the primer to volatilize naturally for 20 minutes, that is, apply the silicone adhesive after the solvent is completely volatilized; the primer is Polymethylsiloxane is a siloxane-based primer that is a film-forming agent. The viscosity of the primer is 1000mpa.s, and the spray thickness of the primer is 0.5μm; the ingredients of the primer include solvents and soluble The film-forming component of the solvent, the film-forming component includes the follo...

Embodiment 2

[0030] A method for improving the stability of the adhesive on the surface of the proton exchange membrane frame of a fuel cell, using a silica gel adhesive as an adhesive, and applying a primer to treat the surface of the proton exchange membrane frame of the battery to form a high surface energy bonding surface , the bonding surface is bonded with a silicone adhesive.

[0031] The method of primer treatment is as follows: spray the primer on the surface of the battery proton exchange membrane frame, wait for the solvent of the primer to volatilize naturally for 30 minutes, and then apply the silicone adhesive after the solvent is completely volatilized; the primer is Polymethylsiloxane is a siloxane-based primer that is a film-forming agent. The viscosity of the primer is 600mpa.s, and the spray thickness of the primer is 0.3μm; the ingredients of the primer include solvents and soluble The film-forming component of the solvent, the film-forming component includes the follow...

Embodiment 3

[0033] A method for improving the stability of the adhesive on the surface of the proton exchange membrane frame of a fuel cell, using a silica gel adhesive as an adhesive, and applying a primer to treat the surface of the proton exchange membrane frame of the battery to form a high surface energy bonding surface , the bonding surface is bonded with a silicone adhesive.

[0034] The method of primer treatment is as follows: spray the primer on the surface of the battery proton exchange membrane frame, wait for the solvent of the primer to volatilize naturally for 30 minutes, and then apply the silicone adhesive after the solvent is completely volatilized; the primer is Polymethylsiloxane is a siloxane-based primer that is a film-forming agent. The viscosity of the primer is 600mpa.s, and the spray thickness of the primer is 0.2μm; the ingredients of the primer include solvents and soluble The film-forming component of the solvent, the film-forming component comprises the follo...

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Abstract

The invention relates to a method for improving the stability of an adhesive on the surface of a fuel cell proton exchange membrane frame. The method comprises the following steps: by using a silica gel adhesive as an adhesive, treating the surface of a battery proton exchange membrane frame (such as PEN) by adopting plasma and/or base coating to form an adhesion surface with high surface energy and multiple active groups, and adhering the adhesion surface with the silica gel adhesive. Compared with the prior art, the method of the invention has the advantages of high-temperature resistance, low-temperature resistance, medium resistance and the like.

Description

technical field [0001] The invention relates to a method for treating the surface of a proton exchange membrane, in particular to a method for improving the stability of an adhesive on the surface of a fuel cell proton exchange membrane frame. Background technique [0002] The fuel cell stack consists of bipolar plates, proton exchange membranes, seals, structural parts and other parts. Each part needs to be connected together, some with screws and some with adhesives. [0003] The proton exchange membrane used in fuel cells generally has two structures, one is an elastomer seal directly formed in the outer frame area where the proton membrane and carbon paper are combined, such as the frame structure used by Barlard, the other is with The plastic film is bonded into a frame structure. The plastic film or other parts need to be bonded to each other to form an integrated structure. The frame and the frame need to be bonded and connected to form an integrated structure. The f...

Claims

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Application Information

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IPC IPC(8): H01M8/0286H01M8/028H01M8/0273H01M8/2404
CPCH01M8/0273H01M8/028H01M8/0286H01M8/2404Y02E60/50
Inventor 张友琴胡正坤
Owner SHANGHAI SHENLI TECH CO LTD
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