Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Effect of Surface-Modified Carbon Fiber on the Mechanical Properties of Carbon/Epoxy Composite for Bipolar Plate of PEMFC

표면처리 탄소섬유가 PEMFC용 탄소/에폭시 복합재료 분리판의 기계적 강도에 미치는 영향

  • LEE, HONGKI (Hydrogen Fuel Cell Parts and Applied Technology RIC, Woosuk University) ;
  • HAN, KYEONGSIK (Department of Life Science, Woosuk University)
  • 이홍기 (우석대학교 수소연료전지 부품 및 응용기술 지역혁신센터) ;
  • 한경식 (우석대학교 생명과학과)
  • Received : 2019.12.23
  • Accepted : 2020.02.28
  • Published : 2020.02.28
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Abstract

Epoxy/carbon composite was used to prepare a bipolar plate for polymer electrolyte membrane fuel cell (PEMFC). Phenol novolac-type epoxy and diglycidyl ether of bisphenol A (DGEBA)-type epoxy mixture was used as a matrix and graphite powder, carbon fiber (CF) and graphite fiber (GF) were used as carbon materials. In order to improve the mechanical properties of the bipolar plate, surface-modified CF was incorporated into the epoxy/carbon composite. To determine the cure temperature of the epoxy mixture, differential scanning calorimetry (DSC) analysis was performed and the data were introduced to Kissinger equation in order to get reaction activation energy and pre-exponential factor. Tensile and flexural strength was obtained by using universal testing machine (UTM). The surface morphology of the fractured specimen and the interfacial morphology between epoxy matrix and CF or GF were observed by a scanning electron microscopy (SEM).

Keywords

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