Electrical and mechanical properties of expanded graphite/high density polyethylene nanocomposites |
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| Affiliation: | 1. Izmir Katip Celebi University, Dept. of Mechanical Engineering, 35620 İzmir, Turkey;2. Dokuz Eylul University, Dept. of Mechanical Engineering, İzmir, Turkey;3. Dokuz Eylul University, Dept. of Chemistry, 365160 İzmir, Turkey;4. Polymer Institute, SAS, Dúbravská Cesta 9, 842 36 Bratislava, Slovakia;5. Izmir Katip Celebi University, Dept. of Mater. Sci. and Eng., 35620 Izmir, Turkey;1. V.A. Belyi Metal Polymer Research Institute of the National Academy of Sciences of Belarus, 32a Kirov str., Gomel 246050, Belarus;2. A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova St., 28, Moscow 119991, Russia;1. State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace, Xi''an Jiaotong University, Xi''an, 710049, PR China;2. Institute of the Building Environment & Sustainability Technology, School of Human Settlements and Civil Engineering, Xi''an Jiaotong University, Xi''an, 710049, PR China;3. School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, Australia;4. School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore;5. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, PR China;6. MIIT Key Laboratory of Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, PR China;1. Birmingham Centre for Energy Storage & School of Chemical Engineering, University of Birmingham (UoB), Birmingham, B15 2TT, UK;2. Global Energy Interconnection Research Institute, State Grid Corporation of China, Beijing 102209, China;3. Global Energy Interconnection Research Institute Europe, State Grid Corporation of China, Berlin 10117, Germany;4. UoB − USTB (University of Science & Technology Beijing) Joint Centre for Energy & Environmental Education & Research, Beijing 100081, China;1. College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China;2. Guangdong Shengyi Technology Limited Corporation, Dongguan, 523039, China |
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| Abstract: | High density polyethylene (HDPE) were filled with expanded graphite particles that have different particle sizes, 5–7 μm (EG5) and 40–55 μm (EG50) in diameter. Nanocomposites were prepared by the melt-mixing technique using EG5 and EG50 at different weight ratios. Transmission Electron Microscopy (TEM) was used to observe the morphology of the nanocomposites. X-ray diffraction patterns of EG5-HDPE and EG50-HDPE nanocomposites were investigated. Tensile tests were carried out to determine tensile strength, Young’s modulus and elongation at break values. The storage modulus and loss modulus were evaluated by Dynamic Mechanical Analysis (DMA). The effect of EG5 and EG50 on electrical conductivity of HDPE was also determined. The tensile strength of HDPE increased 18.7% and 8.5% when 40 wt% EG5 and EG50 was added into HDPE, respectively. The storage modulus of EG5-HDPE and EG50-HDPE is higher compared to that of HDPE. Incorporation of EG5 and EG10 into HDPE also increased the relaxation transition peak of HDPE. The values of electrical conductivity for EG50-HDPE nanocomposites under the same filler content obtained higher in comparison with those for EG5-HDPE nanocomposites. |
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| Keywords: | B. Electrical properties B. Mechanical properties |
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