材料科学
超临界流体
复合材料
高密度聚乙烯
复合数
热导率
热稳定性
碳纳米管
电磁屏蔽
热的
化学工程
聚乙烯
化学
有机化学
气象学
工程类
物理
作者
Cong Meng,Xiaolong Li,Zhigang Liu,Mingchao Wang,Yi Chen,Yongji Sheng,Zhen Liu,Yang Xu,Ligeng Jia,Lei Wu,Xin Chen,Yi Li,Hao Wu,Xiang Lu
出处
期刊:Polymer
[Elsevier]
日期:2023-03-02
卷期号:271: 125828-125828
被引量:6
标识
DOI:10.1016/j.polymer.2023.125828
摘要
The inexhaustible solar energy is a non-negligible alternative to alleviate energy crisis, yet its intermittency and low light-thermal conversion efficiency have become the major challenges for material engineers. In this study, a green and facile supercritical CO2 foaming-assisted vacuum impregnation technique was applied to fabricate the shape-stability HDPE/CNTs/CF/PEG phase change composite (PCC). This advanced manufacturing technology concentrates the CNT and CF in HDPE porous foams, which increases the effective concentration of fillers, thereby enhancing the probability of fillers overlapping each other to form the electrically conductive and thermal conductive paths. Benefiting from this, the PCC is blessed with satisfactory thermal conductivity (0.653 W m−1 K−1), superior light-thermal conversion efficiency (98.1%), suitable phase change enthalpy (142.8 J g−1) and electromagnetic shielding property (19.01 dB). Accordingly, this favorable and facile preparation technology attach promising applications to PCCs in the fields of solar energy utilization, electromagnetic shielding, and thermal management.
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