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.
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.
作者
闫嘉森
韩现英
党兆涵
李建刚
何向明
YAN Jiasen;HAN Xianying;DANG Zhaohan;LI Jiangang;HE Xiangming(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;Institute of Nuclear Energy and New Energy Technology,Tsinghua University,Beijing 100084,China)
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2022年第6期314-320,共7页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:U21A20170)
科技部重点研发计划项目(批准号:2019YFA0705703)资助.
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
Phase change thermal storage material
Paraffin
Expanded graphite
Thermal conductivity enhance⁃ment
Graphene aerogel
作者简介
联系人简介:李建刚,男,博士,教授,主要从事能源存储与转化方面的研究.E⁃mail:lijiangang@bipt.edu.cn;联系人简介:何向明,男,博士,研究员,主要从事新型能源与材料化学方面的研究.E-mail:hexm@tsinghua.edu.cn。
