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Park, Young-Bin
Functional Intelligent Materials Lab (FIMLab)
Research Interests
  • Composites

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Fabrication and Characterization of Aluminum-Carbon Nanotube Powder and Polycarbonate/Aluminum-Carbon Nanotube Composites

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Title
Fabrication and Characterization of Aluminum-Carbon Nanotube Powder and Polycarbonate/Aluminum-Carbon Nanotube Composites
Author
Hwang, San HaBang, Dae-SukYoon, Kwan HanPark, Young-BinLee, Dae-YeolJeong, Sung-Sil
Keywords
Aluminum flakes;  Carbon-nanotube composites;  Cnt nano composites;  Electrical property;  Electrical resistivity;  Filler contents;  Higher frequencies;  Low frequency range;  Percolation thresholds;  Reinforced aluminum;  Rheological property;  Scanning Electron Microscope;  Tensile moduli;  Thermal properties;  Twin screw extruders
Issue Date
201011
Publisher
SAGE PUBLICATIONS LTD
Citation
JOURNAL OF COMPOSITE MATERIALS, v.44, no.23, pp.2711 - 2722
Abstract
Carbon nanotube reinforced aluminum powders (Al-CNT) were fabricated by ball milling. The morphology observed by a scanning electron microscope showed impregnation of CNTs on the surface of aluminum flakes (Al-flakes). Polycarbonate (PC)/Al-CNT nanocomposites were prepared by a twin-screw extruder. The electrical resistivity of PC/Al-flake composites did not change with Al-flake content, while that of PC/CNT nanocomposites decreased with increasing CNT content, and the percolation threshold was obtained at 2wt% CNT loading. The electrical resistivity of PC/Al-CNT nanocomposites showed a behavior similar to PC/CNT nanocomposites. The thermal conductivity of the composites increased with increasing filler contents. The PC/Al-CNT composites showed a viscosity trend that is similar to PC/CNT composites; however, it showed higher viscosities (G*, G '') than PC/Al-flake composites in the low frequency range (up to similar to 10 Hz) and lower viscosities in the higher frequency range (>10 Hz). The tensile modulus of PC/Al-CNT composite increased while the strength decreased with increasing filler content. The modulus of PC/Al-CNT composite was higher than PC/CNT and PC/Al-flake composites.
URI
http://scholarworks.unist.ac.kr/handle/201301/3627
DOI
http://dx.doi.org/10.1177/0021998310369590
ISSN
0021-9983
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MNE_Journal Papers
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