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Determination of Key Influencing Factors on Thermal Conductivity Enhancement of Graphene Nano-Platelets Reinforced Epoxy

[+] Author Affiliations
Maximilian Rieger, Mario Vollmer

Technical University Munich, Munich, Germany

Balakrishnan Nagarajan, Pierre Mertiny

University of Alberta, Edmonton, AB, Canada

Paper No. IMECE2018-86847, pp. V012T11A033; 9 pages
doi:10.1115/IMECE2018-86847
From:
  • ASME 2018 International Mechanical Engineering Congress and Exposition
  • Volume 12: Materials: Genetics to Structures
  • Pittsburgh, Pennsylvania, USA, November 9–15, 2018
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5217-0
  • Copyright © 2018 by ASME

abstract

Dispersing micro and nanoparticles into polymeric materials has proven to induce multifunctional properties in polymer composites, including their magnetic, electrical, thermal and mechanical characteristics. Adding carbon-based nanoparticle inclusions such as Graphene Nano-Platelets (GNP) to polymeric materials typically leads to thermal, electrical and mechanical property enhancements. Raising thermal conductivity by adding highly thermally conductive fillers particularly harbors great potential given diverse possible applications, such as in the electronics industry. In this study, the focus is on increasing the thermal conductivity of an epoxy by dispersing GNP in the pre-polymer. The influence of various process parameters such as filler loading, influence of swelling, use of solvent and additives, sonication time and amplitude, as well as curing cycle were determined. By means of a Design of Experiments approach the parameters which have the greatest effect on thermal conductivity enhancement were identified. Through this study a better understanding of the influence of process parameters was achieved in a qualitative and quantitative manner. The study further aids in selecting ideal process parameters for maximum thermal conductivity enhancements.

Copyright © 2018 by ASME

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