Enhancing the Heat Transfer Efficiency in Graphene鈥揈poxy Nanocomposites Using a Magnesium Oxide鈥揋raphene Hybrid Structure

详细信息    查看全文

• 作者：Fei-peng Du ; Wen Yang ; Fang Zhang ; Chak-Yin Tang ; Sheng-peng Liu ; Le Yin ; Wing-Cheung Law
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：July 8, 2015
• 年：2015
• 卷：7
• 期：26
• 页码：14397-14403
• 全文大小：373K
• ISSN：1944-8252

文摘

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 脳 10¹⁴ 惟 m.