FUEL CELL PLATE MATERIALS AND MANUFACTURE
FUEL CELL INSTITUTE
UNIVERSITI KEBANGSAAN MALAYSIA
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FUEL CELL PLATE MATERIALS AND MANUFACTURE FUEL CELL INSTITUTE UNIVERSITI KEBANGSAAN MALAYSIA |
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In International Conference on Advances in Mechanical Engineering (ICAME)
Concorde Hotel, Shah Alam, Malaysia, 24-25 June 2009
Electrical Conductive Carbon Nanotubes/Graphite/Polypropylene Nanocomposites
Abu Bakar Sulong, Hasanal Izwan Abdul Wahab, Zulkifli Selamat, and Jaafar Sahari Correspondence author: abubakar@eng.ukm.my Fuel Cell Institute, Department of Mechanical and Materials Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
Abstract Better chemical corrosion, lowering manufacturing cost and significant reduction of total mass of bipolar plate in Proton Exchange Membrane Fuel Cell (PEMFC) lead most of the PEMFC’s researchers over the world shown their interest to replace metal based bipolar plate to conductive polymer composites (CPCs) bipolar plate. Conductive fillers such as carbon black and graphite had been incorporated in Polypropylene (PP) matrix for fabrication of electrical conductive polymer composite plate. Most researchers reported only at high loading of fillers (more than 90 wt%), PP CPCs gave electrical conductivity above 100 S/cm, which is target from Department of Energy (USA). Higher loading of fillers cause change in rheological properties lead to difficulties in polymer processing. It also leads to decreasing of mechanical properties of CPCs. Therefore, in this study carbon nanotubes which have 1000 time electrical conductivity than copper wire are introduced into PP matrix with graphite to compensate above problems. Electrical conductivity is measured at in-plane of CPCs, and morphology study by optical microscope. Addition of CNTs resulted in significantly decreases the resistivity of CPCs. Therefore, graphite loading fraction can be reducing by addition of CNTs, in order to maintain process ability of CPCs, especially in injection molding. Keywords: nanomaterial fillers, electrical conductive polymer composites, carbon nanotubes
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