Enhancing the Heat Transfer Efficiency in Graphene-Epoxy Nanocomposites Using a Magnesium Oxide-Graphene Hybrid Structure

Fei Peng Du, Wen Yang, Fang Zhang, Chak Yin Tang, Sheng Peng Liu, Le Yin, Wing Cheung Law

Research output: Journal article publicationJournal articleAcademic researchpeer-review

58 Citations (Scopus)

Abstract

Composite materials, such as organic matrices doped with inorganic fillers, can generate new properties that exhibit multiple functionalities. In this paper, an epoxy-based nanocomposite that has a high thermal conductivity and a low electrical conductivity, which are required for the use of a material as electronic packaging and insulation, was prepared. The performance of the epoxy was improved by incorporating a magnesium oxide-coated graphene (MgO@GR) nanomaterial into the epoxy matrix. We found that the addition of a MgO coating not only improved the dispersion of the graphene in the matrix and the interfacial bonding between the graphene and epoxy but also enhanced the thermal conductivity of the epoxy while preserving the electrical insulation. By adding 7 wt % MgO@GR, the thermal conductivity of the epoxy nanocomposites was enhanced by 76% compared with that of the neat epoxy, and the electrical resistivity was maintained at 8.66 × 1014 Ωm.
Original languageEnglish
Pages (from-to)14397-14403
Number of pages7
JournalACS Applied Materials and Interfaces
Volume7
Issue number26
DOIs
Publication statusPublished - 8 Jul 2015

Keywords

  • composites
  • epoxy
  • graphene
  • magnesium oxide
  • thermal conductivity

ASJC Scopus subject areas

  • Materials Science(all)

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