文献类型：期刊文献

英文题名：Enhancing thermal conductivity of palmitic acid based phase change materials with carbon nanotubes as fillers

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

机构：[1]Shanghai Second Polytech Univ, Sch Urban Dev & Environm Engn, Shanghai 201209, Peoples R China;[2]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2010

卷号：84

期号：2

起止页码：339

外文期刊名：SOLAR ENERGY

收录：;EI(收录号：20100212627432);WOS:【SCI-EXPANDED(收录号:WOS:000274820000019)】；

基金：This work was supported by the National Science Foundation of China (50876058), Shanghai Educational Development Foundation and Shanghai Municipal Education Commission (07SG56), and the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning.

语种：英文

外文关键词：Phase change materials; Palmitic acid; Carbon nanotube; Nanocomposite; Thermal conductivity

摘要：Multi-walled carbon nanotubes (CNTs) as produced are usually entangled and not ready to be dispersed into organic matrix. CNTs were treated by mechano-chemical reaction with ball milling the mixture of potassium hydroxide and the pristine CNTs. Hydroxide radical functional groups have been introduced on the CNT surfaces, which enabled to make stable and homogeneous CNT composites. Treated CNTs were successfully dispersed into the palmitic acid matrix without any surfactant. Transient short-hot-wire apparatus was used to measure the thermal conductivities of these nanotube composites. Nanotube composites have substantially higher thermal conductivities than the base palmitic acid matrix, with the enhancement increasing with the mass fraction of CNTs in both liquid state and solid state. The enhancements of the thermal conductivity are about 30% higher than the reported corresponding values for palmitic acid based phase change nanocomposites containing 1 wt% CNTs treated by concentrated acid mixture. (C) 2009 Elsevier Ltd. All rights reserved.