Preparation and Thermal Properties of Shape-stabilized Paraffin/NPGDMA/BN Composite for Phase Change Energy Storage  

作　　者：Xuefeng Li Lingying Chen Weifang Han Chunhua Ge Hongyu Guan Rui Zhang Xiangdong Zhang 

机构地区：[1]College of Chemistry,Liaoning University,Shenyang,Liooling 110036,China [2]School of Materials Science and Engineering,Liaocheng University,Liaocheng,Shandong 252000,China

出　　处：《Chinese Journal of Chemistry》2020年第12期1737-1742,共6页中国化学（英文版）

基　　金：This work was funded by the Foundation of the EducationDepartment of Liaoning Province(UC201916 and LFW201901);The authors are very grateful to other people for their participation in this work.

摘　　要：of main observation and conclusion Paraffin,as an excellent phase change material(PCM),is limited by the leakage problem and low thermal conductivity.In this research,a novel paraffin/neopentyl glycol dimethacrylate/boron nitride(paraffin/NPGDMA/BN)composite PCM was successfully prepared via a physical mixing process.NPGDMA in paraffin/NPGDMA/BN composite PCM was cured by UV light under the action of photo initiator,which can improve the shape stability to avoid the leakage of paraffin in the process of phase change.By comparing the leakage rate,latent heat,and thermal conductivity,the optimal mass ratio of paraffin and NPGDMA was selected to be 7:3.It was showed that the presence of 5 wt%BN led to increasing in thermal conductivity by up to 59%.The microstructure of the composite PCMs was characterized by SEM,FTIR,and XRD.The composite PCMs can be processed into a variety of shapes by using molds.The paraffin/NPGDMA/BN composite PCM exhibited a significantly improved shape stability and large phase change enthalpy of 123.0 J/g.The leakage rate of paraffin/NPGDMA/BN was much improved after being soaked with petroleum ether.

关 键 词：COMPOSITE CONDUCTIVITY stability 

分 类 号：TB33[一般工业技术—材料科学与工程]