Preparation and characterization of paraffin phase change composites reinforced by carbon fiber-graphite nanoplatelets network

被引：0
|
作者：
Li G. [1 ]
Ouyang T. [1 ]
Jiang Z. [1 ]
Chen Y. [1 ]
机构：
[1] College of Materials Science and Engineering, Hunan University, Changsha
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2020年 / 37卷 / 05期
关键词：
Carbon fiber; Graphite nanoplatelet (GNP); High thermal conductivity; Phase change composites; Thermal stability;
D O I：
10.13801/j.cnki.fhclxb.20190911.002
中图分类号：
学科分类号：
摘要：
Two main drawbacks of most phase change materials are the low thermal conductivity and thermal stability. To address the above-mentioned problems, carbon bonded carbon fiber-graphite nanoplatelets (CF-GNP) network was first prepared using a slurry molding method. And molten paraffin was infiltrated into the CF-GNP network to form a CF-GNP/paraffin phase change composites. The effects of CF and GNP contents on the structure of the CF-GNP network and thermal properties of the CF-GNP/paraffin composites were systematically studied. The results show that the melting-solidifying rates are greatly accelerated for the CF-GNP/paraffin composites comparing to pure paraffin. The less the CF loading amount is, the more the effect of GNP on heat enhancement is. For the CF-GNP/paraffin composites with 50wt% CF and 10wt% GNP in the CF-GNP network, the melting time is shortened by 39.9% comparing with the CF/paraffin composite with only 50wt% CF in network. The decrements are 24.5% and 9.4% for CF/paraffin composite with CF loading of 70wt% and 85wt%, respectively. The tests of 40 thermal cycles indicate that the CF-GNP/paraffin composites prepared in this study show good thermal stability. © 2020, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.
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页码：1130 / 1137
页数：7
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