화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.20, No.11, 1124-1130, November, 2012
DOI10.1007/s13233-012-0163-6  Export Citation
Effects of Hybrid Hardener on Properties of a Composite Bipolar Plate for Polymer Electrolyte Membrane Fuel Cells
Do-Hun Kim, Jeong-Heon Kim1, Yi-Yeol Lyu2, and Jin-Heong Yim†
  • Division of Advanced Materials Engineering, Kongju National University, Chungnam, 314-701, Korea
  • 1Fuel Cell Development Team, Hankook Tire Co., Ltd., Daejeon, 305-725, Korea
  • 2Uni-Tech Co., Ltd., Gyeonggi, 425-100, Korea
E-mail:
The effects of a hybrid hardener on the mechanical and electrical properties and corrosion resistance of conductive graphite based epoxy composites for the bipolar plate of polymer electrolyte membrane fuel cells (PEMFC) is investigated. Diaminodiphenylsulfone (DDS) is used as an additional hardener in order to enhance the physicochemical properties of graphite-based bisphenol type epoxy-cresol novolac phenol resin composites. The characteristics of the graphite composites, based on epoxy resin respectively with and without DDS, are compared in order to shed light on the curing behaviors of the epoxy/graphite composites. The tensile strength and conductivity of the epoxy/graphite composites with DDS are much higher than those without DDS. From the results of the scanning electron microscope and optical microscope analyses, the morphology of the epoxy/graphite composite with DDS was evaluated and is shown to be more compact than that without DDS. This is attributed to the strong crosslinking effect of DDS. This epoxy/graphite composite can be successfully molded as a real bipolar plate, with fairly good physicochemical properties through a compression molding process.
Keywords:polymer electrolyte membrane fuel cell;bipolar plate;epoxy;diaminodiphenylsulfone;graphite.
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