Multifunctional HDPE/CNTs/PW composite phase change materials with excellent thermal and electrical conductivities  

作　　者：Xiaolong Li Xinxin Sheng Yongqiang Guo Xiang Lu Hao Wu Ying Chen Li Zhang Junwei Gu 

机构地区：[1]Key Laboratory of Material Chemistry for Energy Conversion and Storage of Ministry of Education,School of Chemistry and Chemical Engineering,Huazhong University of Science&Technology,Wuhan,430074,China [2]Hubei Key Laboratory of Material Chemistry and Service Failure,School of Chemistry and Chemical Engineering,Huazhong University of Science&Technology,Wuhan,430074,China [3]Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter,School of Materials and Energy,Guangdong University of Technology,Guangzhou,510006,China [4]Shaanxi Key Laboratory of Macromolecular Science and Technology,School of Chemistry and Chemical Engineering,Northwestern Polytechnical University,Xi’an,710072,China [5]School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang,471023,China

出　　处：《Journal of Materials Science & Technology》2021年第27期171-179,共9页材料科学技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.51903092);support from Guangdong Special Support Program(Grant No.2017TX04N371)。

摘　　要：The risk of leakage and low thermal conductivity severely hinder the wide application of phase change materials(PCMs).In this work,the high-density polyethylene/carbon nanotubes(HDPE/CNTs)porous scaffolds were successfully fabricated via a sacrificial template method followed by the general melt blending and water solvent etching.Subsequently,a series of paraffin wax HDPE/CNTs/PW composite PCMs were obtained combined with the simple vacuum impregnation method.The obtained HDPE/CNTs porous scaffolds can effectively avoid the leakage of PW,meanwhile,the thermal conductivity and electrical conductivity of HDPE/CNTs/PW-3:7 are increased by 2.94 times and 13 orders of magnitude compared with the HDPE/PW-3:7 respectively,also,it exhibits high phase change enthalpy(153.95 J/g for melting enthalpy and 152.82 J/g for crystallization enthalpy).From the above perspectives,the HDPE/CNTs/PW-3:7 has promising potential value in the application of light-to-thermal conversion,electro-to-thermal conversion and thermal energy storage.

关 键 词：Paraffin wax HDPE/CNTs porous scaffolds Phase change materials Thermal energy storage 

分 类 号：TB34[一般工业技术—材料科学与工程]