综述与专论

膨胀石墨基相变材料孔隙结构及导热性能的研究进展

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  • 江西理工大学建筑与测绘学院,赣州341000
贺倩(1999-),女,硕士研究生,主要从事相变储能材料的研究,E-mail:hq18879645233@163.com。

收稿日期: 2020-01-05

  修回日期: 2021-01-14

  网络出版日期: 2021-05-07

基金资助

国家自然科学基金(51666004,51966004);江西省自然科学基金项目(2019BAB216030);江西理工大学清江青年优秀人才项目(JXUSTQJYX2017003)

Research progress on pore structure and thermal conductivity of EG composite phase change material

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  • School of Architectural and Surveying & Mapping Engineering,Jiangxi University of Science and Technology,Ganzhou 341000

Received date: 2020-01-05

  Revised date: 2021-01-14

  Online published: 2021-05-07

摘要

膨胀石墨(EG)是多孔吸附材料中具备优良传热效果的材料,但不同的制备方法和条件对复合相变储能材料的孔隙结构及导热性能有很大影响。通过对EG的孔隙结构、制备方法与导热性能的关系简述,分析EG含量及孔隙结构对复合相变材料热性能的影响,对比不同种类相变材料及配比对复合材料的影响。同时,比较相变储能材料的制备方法的优点与不足,分析制备方法及压缩密度与导热性能的关系。最后,对于目前EG基相变材料导热性能领域内的不足进行分析,提出EG基相变储能材料的制备优化方法,并指出,为提高相变储能材料的热性能需要研究压制成型条件。

本文引用格式

贺倩, 费华, 杜文清, 王林雅, 刘玉兰, 周嘉宏, 方敏 . 膨胀石墨基相变材料孔隙结构及导热性能的研究进展[J]. 化工新型材料, 2021 , 49(4) : 11 -15 . DOI: 10.19817/j.cnki.issn1006-3536.2021.04.003

Abstract

Expanded graphite(EG) is a kind of porous adsorption material with excellent heat transfer effect,however,different preparation methods and conditions have great influence on the pore structure and thermal conductivity of the composite phase change material (PCM).The relationship between the pore structure of EG and the preparation method to its properties was briefly described.The effects of EG content and pore structure on the thermal properties of the composite were analyzed.The effects of different kinds PCM and their proportions on the composites were compared at the same time.The advantages and disadvantages of the preparation methods of phase change energy storage materials were compared,the relationship between preparation method,compression density and comprehensive properties was analyzed.Finally,the shortcomings in the field of thermal conductivity of EG based phase change energy storage materials were analyzed,The preparation methods of EG composite phase change materials were optimized,and it was necessary to study the pressing conditions in order to improve the thermal properties of PCMs.

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