Thermal performances and characterization of microencapsulated phase change materials for thermal energy storage

2019 2nd International Conference on Advanced Materials, Intelligent Manufacturing and Automation

Ma, Yanhong^1 ; Xie, Qifei^1 ; Li, Yue^1^2 ; Min, Xianhao^1^3 ; Wang, Xinzhong^1

School of Electronic Communication Technology, Shenzhen Institute of Information Technology, Longgang District, Shenzhen, Guangdong

518172, China^1

School of Ecology and Environment, Inner Mongolia University, Hohhot, Inner Mongolia Autonomous Region

010021, China^2

School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan

430074, China^3

关键词: Core material;    Methyl methacrylates;    Microencapsulated phase change material;    Polymerization method;    Polymerization systems;    Spherical morphologies;    Thermal cycling test;    Thermal Performance;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/569/2/022020/pdf
DOI  :  10.1088/1757-899X/569/2/022020

来源: IOP

【 摘 要 】

A series of microencapsulated phase change materials (micro-PCMs) contained butyl stearate and octadecane as core materials were synthesized by suspension-like polymerization method. Methyl methacrylate (MMA), divinylbenzene (DVB), pentaerythritol triacrylate (PETA) and pentaerythritol tetraacrylate (PETTA) were introduced in polymerization system to form shells. DSC results indicated that microencapsulation ratio could reach as high as 75 wt.%. After 500 times thermal cycling test, the microencapsulation ratio of these as-prepared micro-PCMs decreased only by 2.3 wt.%. SEM images showed that these micro-PCMs have relatively spherical morphology and compact surfaces with diameter ranging from 5 to 40 μm.