氧化石墨烯复合相变微胶囊制备及传热特性研究  

Preparation and Heat Transfer Characteristics of Graphene Oxide Composite Phase Change Microcapsules

作　　者：吴学红 王凯 王强伟 陈亚南 刘鹤 王燕令 常志娟 桂阳海 WU Xuehong;WANG Kai;WANG Qiangwei;CHEN Yanan;LIU He;WANG Yanling;CHANGZhijuan;GUI Yanghai(School of energy and power Engineering,Zhengzhou University of Light Industry,Zhengzhou 450000,China)

机构地区：[1]郑州轻工业大学能源与动力工程学院,郑州450000

出　　处：《工程热物理学报》2023年第12期3414-3419,共6页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51476149);河南省中原科技创新领军人才资助项目(No.234200510011);河南省科技攻关项目(No.202102210311,No.212102210231)。

摘　　要：本文采用原位聚合法以氧化石墨烯物理改性密胺树脂为壳材,包覆石蜡制备石蜡@密胺树脂/氧化石墨烯相变微胶囊。石蜡@密胺树脂/氧化石墨烯复合相变微胶囊在保存了石蜡高储能密度的同时有效防止了石蜡泄漏,并且提高了其导热性。当质量分数ω为6%时,导热系数为1.25 W·m^(-1)·K^(-1),提高了7.8倍,潜热略有降低,潜热焓值为185.4 J·g^(-1),包覆率为70.4%。将制备的改性微胶囊进行防泄漏测试研究,展现出优异的热稳定性能。In this paper,paraffin@melamine resin/graphene oxide phase change microcapsules were prepared by in-situ polymerization with melamine resin physically modified by graphene oxide as shell material and coated with paraffin.Paraffin@melamine resin/graphene oxide composite phase change microcapsule not only keeps the high storage density of paraffin,but also effectively prevents the leakage of paraffin and improves its thermal conductivity.When the mass fractionωis 6%,the thermal conductivity is 1.25 W·m^(-1)·K^(-1),which is increased by 7.8 times,and the latent heat decreases slightly.The latent heat enthalpy is 185.4 J·g^(-1),and the cladding rate is 70.4%.The anti-leakage test of the prepared modified microcapsules showed excellent thermal stability.

关 键 词：相变微胶囊 氧化石墨烯 导热系数 防泄漏 

分 类 号：TK02[动力工程及工程热物理]