Synthesis, thermal properties and thermal reliabilities of microspheres with ester mixtures as phase change materials

2018 International Conference of Green Buildings and Environmental Management

土木建筑工程;生态环境科学

Ma, Yanhong^1,2 ; Xie, Qifei^1 ; Wang, Xinzhong^1

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

518172, China^1

Department of Chemistry, College of Arts and Science, University of Nebraska-Lincoln, Lincoln

NE

68588, United States^2

关键词: Melting enthalpy;    Phase change temperature;    Polymerization method;    Ternary mixtures;    Thermal cycling test;    Thermal Performance;    Thermal reliability;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/186/2/012026/pdf
DOI  :  10.1088/1755-1315/186/2/012026

来源: IOP

【 摘 要 】

Using suspension-like polymerization method, a series of microspheres with ester mixtures as phase change materials were prepared. Thermal properties of the binary mixtures like, paraffin/butyl stearate, paraffin/octadecyl methacrylate, and paraffin/dodecyl 2-methylacrylate, and ternary mixtures, like paraffin/butyl stearate/octadecyl methacrylate and paraffin/butyl stearate/dodecyl 2-methylacrylate, were investigated. The phase change temperature of these binary and ternary systems could be adjusted by regulating the composition of them. SEM photographs showed that these microspheres have spherical profiles and compact surfaces with diameter ranging from 10 to 80 μm. DSC results indicated that the melting enthalpy of these microspheres ranging from 30 to 65 J/g. Moreover, after being subjected to thermal-cycling test for 500 times, these microspheres kept good thermal performances and reliabilities.