Investigate Thermal Conductivity of Graphene Nanocomposites Using Molecular Dynamics Simulation

• Main Authors: Lee, Hsiu-Yu, 李脩毓
• Other Authors: Tsai, Jia-Lin
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/7fy698

碩士 === 國立交通大學 === 機械工程系所 === 106 === The study aims to characterize the thermal conductivities of graphene nanocomposites using molecular dynamics (MD) simulation. The thermal properties including the interfacial thermal conductance (ITC) between graphene and epoxy resin and the effects of wavy graphene on the thermal conductivity of nanocomposites were investigated. Results indicated that although graphene is not covalently bonded with surrounding epoxy, the thermal conductivity of graphene is affected by the epoxy matrix and decrease around 39.2%. In addition, in the nanocomposites with wavy graphene, when the waviness increases, the thermal conductivity of graphene and nanocomposites decreases accordingly. On the other hand, in the nanocomposites with functionalized wavy graphene, the thermal conductivity of nanocomposites is not influenced significantly by the waviness. Moreover, the nanocomposites with functionalized wave graphene exhibit superior thermal conductivity to those with pristine wave graphene. This is because the ITC is improved by the functional groups grafted on the graphene surface.