1. Fibre orientation effect on polypropylene/milled carbon fiber composites in the presence of carbon nanotubes or graphene as a secondary filler: Application on PEM fuel cell bipolar plate
- Author
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Abu Bakar Sulong, Nabilah Afiqah Mohd Radzuan, Ahmad Tajuddin Abdullah, Teuku Husaini, Ros Emilia Rosli, Edy Herianto Majlan, Masli Irwan Rosli, and Mahendra Rao Somalu
- Subjects
Polypropylene ,chemistry.chemical_classification ,Materials science ,Renewable Energy, Sustainability and the Environment ,Graphene ,Energy Engineering and Power Technology ,Proton exchange membrane fuel cell ,02 engineering and technology ,Carbon nanotube ,Polymer ,Conductivity ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,0104 chemical sciences ,law.invention ,chemistry.chemical_compound ,Fuel Technology ,chemistry ,Flexural strength ,law ,Extrusion ,Composite material ,0210 nano-technology - Abstract
Conductive polymer composite (CPC) materials are extensively used for the bipolar plate in Polymer Electrolyte Membrane Fuel Cells (PEMFCs). The produced CPC materials through the extrusion process strongly relate to electrical conductivity and mechanical properties. In this study, milled carbon fibre (MCF) reinforced polypropylene (PP) incorporating carbon nanotube (CNT), or graphene nanoplatelets (xGNP) are pre-mixed using the extrusion process to orientate the fibres before undergoing the compression moulding at 13.8 MPa and 200 °C for 15 min. The CNT composites exhibited the higher through-plane conductivity of 14.8 S/cm as compared to xGnP composites with 4.9 S/cm at 70 wt% of MCF. The flexural strength improved after being compressed to 99.6 MPa and 172.5 MPa for 70 wt% of CNT and xGNP, respectively. This reveals that the oriented fibres can boost the CPC performance.
- Published
- 2019
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