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Preparation method of macromolecule resin composite bipolar plate for ion exchange membrane fuel battery

A technology of polymer resin and proton exchange membrane, which can be used in applications, household appliances, flat products, etc., and can solve problems such as insufficient mechanical strength

Inactive Publication Date: 2006-05-03
ZHEJIANG UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0009] The 200510050279.5 patent proposes a method for preparing composite bipolar plates for proton exchange membrane fuel cells. Although the products prepared by this method can be used in proton exchange membrane fuel cells, they still have the disadvantage of insufficient mechanical strength

Method used

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Experimental program
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Embodiment 1

[0017] Add 21.0-35.0 g of thermoplastic polyimide resin to 98.0-112.0 g of spherical graphite, 0.7-2.1 mL of coupling agent (KH-560), and 4.2-14.0 g of plate fiber reinforcing agent (short carbon fiber). The mixture is put into a mixer and mixed for 15-35 minutes, and preheated to 80-100°C. The mixture is put into a mold which is coated with a release agent and preheated to 80-100°C. Then put the mold on the vacuum hydraulic press, the vacuum degree of the vacuum hydraulic press is -0.085MPa, control the temperature at 120-180°C and the pressure at 0.5-15MPa for vacuum molding, and control the heat preservation time in the hydraulic press at 2-50 minutes . The product is demolded and placed in an oven for post-processing. The temperature is controlled at 80-180°C and the time is controlled at 0.2-2.0 hours. After taking it out, it is cooled at room temperature to obtain the finished product.

[0018] Reality

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example

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Abstract

The invention belongs to the fuel battery technique, relating to a method for preparing proton exchange membrane fuel battery with high polymer resin composite bipolar plate. The preparing method comprises: adding globular graphite in 70-80wt%, thermoplastic polyimide resin in 15-25wt%, coupling agent (KH-560) in 0.5-1.5wt% and polar plate fiber reinforcing agent (staple carbon fiber) in 3-10wt% into mixing machine to be mixed for 15-35 minutes; mixing and heating to 80-100Deg. C, to be put into the mould which has been heated to 80-100Deg. C; the vacuum degree of vacuum hydraulic presser is -0.085MPa, the compression molding temperature of mixed material is controlled in 120-180Deg. C, the compression molding pressure is 0.5-15MPa, and the warm-keeping time of composite dipolar plate in the hydraulic presser is controlled in 2-50 minutes; the product is demoulded and laid into oven for final treatment while the temperature is in 80-180 Deg. C, and the time is 0.2-2 hours, then extracting the product to be cooled in room temperature to attain the final product. The quality index of invention can meet the standard of composite bipolar plate of proton exchange membrane fuel battery.

Description

technical field [0001] The invention relates to a preparation method of a polymer resin composite bipolar plate for a proton exchange membrane fuel cell. It belongs to the field of fuel cell technology. Background technique [0002] A fuel cell is a power generating device that efficiently converts fuel and oxidant into electricity. Compared with traditional power generation technology, it has the advantages of high energy conversion efficiency, less pollution, and low noise. With the increasing demand of human beings for energy, conventional energy is becoming more and more scarce. Therefore, the development and research of fuel cells have been paid more and more attention by governments and scientists of various countries. [0003] Proton exchange membrane fuel cell is a fuel cell with perfluorosulfonic acid ion exchange membrane as electrolyte, hydrogen or reformed gas as fuel, and air or oxygen as oxidant. The simplest proton exchange membrane fuel cell is composed o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/02B29C33/62B29C35/02B29C43/58B29K77/00B29L7/00
Inventor 方卫民马小杰
Owner ZHEJIANG UNIV
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