高等学校化学学报 ›› 2022, Vol. 43 ›› Issue (6): 20220054.doi: 10.7503/cjcu20220054

• 材料化学 • 上一篇    下一篇

石蜡/膨胀石墨/石墨烯复合相变储热材料的制备及性能

闫嘉森1, 韩现英1, 党兆涵1, 李建刚1(), 何向明2()   

  1. 1.北京石油化工学院新材料与化工学院, 燃料清洁化及高效催化减排技术北京市重点实验室, 北京 102617
    2.清华大学核能与新能源技术研究所, 北京 100084
  • 收稿日期:2022-01-23 出版日期:2022-06-10 发布日期:2022-03-09
  • 通讯作者: 李建刚,何向明 E-mail:lijiangang@bipt.edu.cn;hexm@tsinghua.edu.cn
  • 基金资助:
    国家自然科学基金(U21A20170);科技部重点研发计划项目(2019YFA0705703)

Preparation and Performance of Paraffin/Expanded Graphite/Graphene Composite Phase Change Heat Storage Material

YAN Jiasen1, HAN Xianying1, DANG Zhaohan1, LI Jiangang1(), HE Xiangming2()   

  1. 1.College of New Materials and Chemical Engineering,Beijing Institute of Petrochemical Technology,Beijing Key Laboratory of Fuel Cleaning and Efficient Catalytic Emission Reduction Technology,Beijing 102617,China
    2.Institute of Nuclear Energy and New Energy Technology,Tsinghua University,Beijing 100084,China
  • Received:2022-01-23 Online:2022-06-10 Published:2022-03-09
  • Contact: LI Jiangang,HE Xiangming E-mail:lijiangang@bipt.edu.cn;hexm@tsinghua.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(U21A20170);the Key R&D Program of the Ministry of Science and Technology of China(2019YFA0705703)

摘要:

以石蜡(PA)作为相变储热材料、 膨胀石墨(EG)作为主导热材料和支撑材料, 石墨烯气凝胶(GA)作为导热增强材料和辅支撑材料制备了PA/EG/GA复合相变材料, 研究了GA添加量对复合相变材料相变温度、 相变潜热、 导热性能以及循环稳定性的影响. 结果表明, 所制备的80%PA-17%EG-3%GA复合相变材料导热性能良好, 循环稳定性出色. 与80%PA-20%EG复合材料相比, 该材料的相变温度、 相变潜热以及循环稳定性无明显变化, 但导热系数由4.089 W/(m·K)提升到了5.336 W/(m·K), 显示出良好的应用前景.

关键词: 相变储热材料, 石蜡, 膨胀石墨, 导热增强, 石墨烯气凝胶

Abstract:

The paraffin/expanded graphite/graphene aerogel composite phase change material was prepared by using paraffin(PA) as the phase change heat storage material, expanded graphite(EG) as the main thermal conductive material and support material, and graphene aerogel(GA) as the thermal conductivity enhancement material and auxiliary support material. The effects of the amount of GA added on the phase transition temperature, latent heat of phase transition, thermal conductivity and cycling stability of the composite material were investigated. The results show that the phase change material with composition of 80%PA-17%EG-3%GA has good thermal conductivity and excellent cycling stability. Compared with 80%PA-20%EG composite material, it exhibits almost the same phase transition temperature, latent heat of phase transition and cycling stability, but increased thermal conductivity from 4.089 W/(m·K) to 5.336 W/(m·K), showing good application prospects.

Key words: Phase change thermal storage material, Paraffin, Expanded graphite, Thermal conductivity enhancement, Graphene aerogel

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