Microencapsulation of phase change materials with carbon nanotubes reinforced shell for enhancement of thermal conductivity

17th IUMRS International Conference in Asia

Cui, Weiwei^1,2 ; Xia, Yongpeng^1,2 ; Zhang, Huanzhi^1,2 ; Xu, Fen^1,2 ; Zou, Yongjin^1,2 ; Xiang, Cuili^1,2 ; Chu, Hailiang^1,2 ; Qiu, Shujun^1,2 ; Sun, Lixian^1,2

School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin

541004, China^1

Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin

541004, China^2

关键词: Crystallization temperature;    In-situ polymerization;    Melting enthalpy;    Microencapsulated phase change material;    Modified carbon;    Reinforced shell;    Thermal cycling stabilities;    Thermal response rate;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/182/1/012015/pdf
DOI  :  10.1088/1757-899X/182/1/012015

来源: IOP

【 摘 要 】

Novel microencapsulated phase change materials (micro-PCMs) were synthesized via in-situ polymerization with modified carbon nanotubes(CNTs) reinforced melamine-formaldehyde resin as shell material and CNTs reinforced n-octadecane as PCMs core. DSC results confirm that the micro-PCMs possess good phase change behavior and excellent thermal cycling stability. Melting enthalpy of the micro-PCMs can achieve 133.1 J/g and has slight changes after 20 times of thermal cyclings. And the incorporation of CNTs supplies the micro-PCMs with fast thermal response rate which increases the crystallization temperature of the micro-PCMs. Moreover, the thermal conductivity of the micro-PCMs has been significantly enhanced by introducing CNTs into their shell and core materials. And the thermal conductivity of micro-PCMs with 1.67 wt.% CNTs can increase by 25%. These results exhibit that the obtained micro-PCMs have a good prospect in thermal energy storage applications.