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

Xiaolong Li ¹Xinxin Sheng ²Yongqiang Guo ³Xiang Lu ¹Hao Wu ¹Ying Chen ²Li Zhang ²Junwei Gu⁴

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作者信息

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;Hubei Key Laboratory of Material Chemistry and Service Failure,School of Chemistry and Chemical Engineering,Huazhong University of Science&Technology,Wuhan,430074,China
2. Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter,School of Materials and Energy,Guangdong University of Technology,Guangzhou,510006,China
3. Shaanxi Key Laboratory of Macromolecular Science and Technology,School of Chemistry and Chemical Engineering,Northwestern Polytechnical University,Xi'an,710072,China;School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang,471023,China
4. Shaanxi Key Laboratory of Macromolecular Science and Technology,School of Chemistry and Chemical Engineering,Northwestern Polytechnical University,Xi'an,710072,China
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Abstract

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 electri-cal 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.

Key words

Paraffin wax/HDPE/CNTs porous scaffolds/Phase change materials/Thermal energy storage

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基金项目

This work was supported by the National Natural Science Foun-dation of China(Grant 51903092)

Y.C.acknowledges the support from Guangdong Special Support Program(Grant 2017TX04N371)

出版年

2021

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI

影响因子：0.657

ISSN：1005-0302

参考文献量51

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