title: Enhancing the Heat Transfer Efficiency in Graphene-Epoxy Nanocomposites Using a Magnesium Oxide-Graphene Hybrid Structure.
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 × 10(14) Ω m.
authors.affiliation: †School of Materials Science and Engineering and Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, China.
authors.forename: Fei-Peng
authors.initials: FP
authors.lastname: Du
authors.affiliation: †School of Materials Science and Engineering and Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, China.
authors.forename: Wen
authors.initials: W
authors.lastname: Yang
authors.affiliation: †School of Materials Science and Engineering and Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, China.
authors.forename: Fang
authors.initials: F
authors.lastname: Zhang
authors.affiliation: ‡Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
authors.forename: Chak-Yin
authors.initials: CY
authors.lastname: Tang
authors.affiliation: †School of Materials Science and Engineering and Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, China.
authors.forename: Sheng-Peng
authors.initials: SP
authors.lastname: Liu
authors.affiliation: †School of Materials Science and Engineering and Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, China.
authors.forename: Le
authors.initials: L
authors.lastname: Yin
authors.affiliation: ‡Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
authors.forename: Wing-Cheung
authors.initials: WC
authors.lastname: Law
keywords: composites; epoxy; graphene; magnesium oxide; thermal conductivity