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Processing and properties of electrically conductive nanocomposites based on polyamide-12 filled with exfoliated graphite nanoplatelets prepared by selective laser sintering

International Journal of Precision Engineering and Manufacturing volume 14, pages 1947–1951 (2013)Cite this article

Abstract

Electrically conductive polymer nanocomposites were prepared through selective laser sintering (SLS) of polyamide-12 (PA) powder coated with graphite nanoplatelets (GNP) using sonication. The SLS process parameters were optimized in order to maximize the tensile modulus at 3 and 5 wt% GNP. The highest tensile modulus (2.1 GPa) was achieved at 3 wt%. A slight decrease in flexural modulus and strength was observed at 3 and 5 wt% GNP compared with the neat polymer. Morphological observation of the graphitecoated PA powder showed fairly homogeneous dispersion. The SLS processed parts were nearly fully dense and the highest density (99.5%) was found at 3 wt% GNP. The bulk electrical conductivity of the SLS-processed nanocomposites was found to be 3.8×10−11 and 6.4×10−8 S/cm for 3 and 5 wt% GNP respectively.

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Abbreviations

GNP:

Graphite Nanoplatelets

PA:

Polyamide

PNC:

Polymer Nanocomposite

SLS:

Selective Laser Sintering

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Authors and Affiliations

  1. George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0405, USA

    Shaun Eshraghi, Mehdi Karevan, Kyriaki Kalaitzidou & Suman Das

  2. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA

    Kyriaki Kalaitzidou & Suman Das

Authors
  1. Shaun Eshraghi
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  2. Mehdi Karevan
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  3. Kyriaki Kalaitzidou
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  4. Suman Das
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Correspondence to Suman Das.

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Eshraghi, S., Karevan, M., Kalaitzidou, K. et al. Processing and properties of electrically conductive nanocomposites based on polyamide-12 filled with exfoliated graphite nanoplatelets prepared by selective laser sintering. Int. J. Precis. Eng. Manuf. 14, 1947–1951 (2013). https://doi.org/10.1007/s12541-013-0264-y

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  • DOI: https://doi.org/10.1007/s12541-013-0264-y

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