文献类型：期刊文献

英文题名：Thermal properties of composites containing metal oxide nanoparticles

作者：Wang, Jifen[1,2]; Xie, Huaqing[2]; Xin, Zhong[1]; Li, Yang[2]; Li, Jing[2]

机构：[1] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; [2] School of Urban Development and Environmental Engineering, Shanghai Second Polytechnic University, Shanghai, 201209, China

年份：2011

卷号：694

起止页码：146

外文期刊名：Materials Science Forum

收录：EI(收录号：20113514274877)

语种：英文

外文关键词：Alumina - II-VI semiconductors - Metal nanoparticles - Phase change materials - Specific heat - Thermal conductivity - Hematite - Metals - Zinc oxide

摘要：We prepared a series of paraffin wax (PW) based phase change composite containing ZnO, Al2O3 and Fe2O3 nanoparticles, respectively. DSC results showed that there is a decrease trend in phase change latent heat capacity (Ls) with an increase of metal oxide nanoparticle loadings. ZnO/PW has higher Ls than those of Fe2O 3/PW and Al2O3/PW with same metal oxide nanoparticle loadings. Transient short-hot-wire (SHW) method was used to measure thermal conductivity of these composites. The results showed that nanoparticle addition leads to substantial enhancement in the thermal conductivity of the composites. The highest thermal conductivity of the measured composites is about 0.27 W/(m?K) of Fe2O3/PW with 3.0 wt% nanoparticles and Al2O3/PW with 5.0 wt% nanoparticles at 15 °C, which higher than that of PW by about 30%. The lowest thermal conductivity of composites is that of Al2O3/PW and ZnO/PW with wt% nanoparticles at 60 °C, which higher than that of PW by about 7%.