EXPERIMENTAL INVESTIGATION ON THE THERMAL CONDUCTIVITY OF GRAPHENE-NANOPLATELED/PALMITIC-ACID COMPOSITES
In the present study, graphene-nanoplatelet /palmitic-acid composites were prepared by adding the graphene-nanoplatelets into the melting palmitic-acid with intensive sonication. The morphology and microstructure of the composites were examined by scanning electron microscope (SEM) and optical microscope images. GNPs prepared in this work are about 30 nm in thickness and 2 um in diameter treated by typical acid oxidation and ultrasound stirring. The graphene-nanoplatelets addition enhanced the thermal conductivity of the composites in both liquid state and solid state. The enhancement ratios increase with the mass fraction of graphene-nanoplatelets. Interestingly, the thermal conductivity of the composites enhanced rapidly after a certain mass fraction of the graphene-nanoplatelet /palmitic-acid composites. We take this mass fraction as the percolation threshold of the graphene-nanoplatelet /palmitic-acid composites. The thermal conductivity of graphene-nanoplatelet /palmitic-acid composites varies slightly with temperature at temperatures in the same state.
Jifen Wang Huaqing Xie Yang Li
School of Urban Development and Environmental Engineering, Shanghai Second Polytechnic University, Shanghai 201209, China
国际会议
The Ninth Asian Thermophysical Properties Conference(第九届亚洲热物理性能会议 ATPC 2010)
北京
英文
743-746
2010-10-19（万方平台首次上网日期，不代表论文的发表时间）