Thermal conductivity enhancement of form-stable phase-change composites by milling of expanded graphite, micro-capsules and polyethylene

Xianglei Wang, Quangui Guo, Junzhong Wang, Yajuan Zhong, Liyong Wang, Xinghai Wei and Lang Liu

Renewable Energy, 2013, vol. 60, issue C, 506-509

Abstract: Structured form-stable phase change composites were prepared by wet milling and hot-compaction of microencapsulated phase change material (MPCM), expanded graphite (EG) and high density polyethylene (HDPE). In the composites, MPCM serves as a latent heat storage material, EG as a heat transfer promoting agent and HDPE as a matrix. Scanning electron microscope (SEM) characterization reveals that MPCM particles kept undamaged with a uniform dispersion in the composites. Thermal conductivity of the composites with 20 wt% EG loaded could be enhanced by 22 times compared to HDPE/MPCM composites without EG. And thermal conductivity of the composite could be increased by 10 times at a loading of 10 wt% EG.

Keywords: Expanded graphite; Microencapsulated phase change material; Thermal conductivity; Wet milling (search for similar items in EconPapers)
Date: 2013
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Citations: View citations in EconPapers (5)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:60:y:2013:i:c:p:506-509

DOI: 10.1016/j.renene.2013.05.038

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