Precise characterization of thermal conductivity and interfacial thermal resistance of individual polymer microparticle

被引:1
作者
Zheng, Jie [1 ]
Shi, Xiaofeng [2 ]
Chen, Sikun [1 ]
Zhu, Hongxin [1 ]
Xie, Siqi [1 ]
Zhou, Yanguang [3 ]
Meng, Haibing [4 ]
Wang, Haidong [1 ]
机构
[1] Tsinghua Univ, Dept Engn Mech, Key Lab Thermal Sci & Power Engn, Minist Educ, Beijing 100084, Peoples R China
[2] North Univ China, Sch Environm & Safety Engn, Taiyuan 030051, Peoples R China
[3] Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Kowloon, Clear Water Bay, Hong Kong, Peoples R China
[4] Taiyuan Univ Technol, Coll Chem, Taiyuan 030024, Peoples R China
基金
中国国家自然科学基金;
关键词
Individual microparticle; Thermal conductivity; Interfacial thermal resistance; H -type measurement device; THERMOELECTRIC PROPERTIES; TEMPERATURE; MICROSPHERE; HEAT;
D O I
10.1016/j.ijheatmasstransfer.2024.125880
中图分类号
O414.1 [热力学];
学科分类号
摘要
With the incorporation of microparticles in composite materials becoming increasingly widespread, it is important to study the effect of the thermophysical properties and thermal contact between individual microparticles on heat transfer in composite materials. However, studies on the heat transfer performance of single microparticles are scarce, mainly because the micrometre scale size makes the measurement difficult. Furthermore, the area of contact between microparticles is smaller than the micrometre scale, further enhancing the difficulty of heat measurements. In this study, an H-type measurement device was developed for the thermophysical characterization of single microparticles. Through experimental and theoretical analyses, we obtained the thermal conductivity and thermal resistance of single microparticles of silicon dioxide, polyethylene (PE), poly ether ketone (PEEK) and polymethyl methacrylate (PMMA), apart from the interfacial thermal resistance between two PMMA particles. Furthermore, effective experimental methods were also developed for the study of the heat transfer mechanism of composite materials at the microscopic level.
引用
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页数:10
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