TY - GEN
T1 - Role of Micro-nano Hexagonal Boron Nitride Coordination on Thermal Conductivity and Breakdown Strength of Epoxy Composites
AU - Cheng, Zhuolin
AU - Xiang, Jiao
AU - Zhang, Chuang
AU - Fu, Hang
AU - Xin, Lei
AU - Zhang, Xiaotong
AU - Wang, Shihang
AU - Li, Jianying
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/9/6
Y1 - 2020/9/6
N2 - Epoxy resin (EP) has been used as insulating material in power electronic transformer (PET), while low thermal conductivity of EP limits the heat dissipation efficiency of PET. Role of Micro-nano hexagonal boron nitride coordination on thermal conductivity and breakdown strength of epoxy composites was explored. A thermal conductivity of 0.544 W/(m·K) was obtained for 10 wt% BN/EP micro composites, increased by 149.5% compared with pristine epoxy. In addition, the specimen with a dual doping of 10 wt% h-BN and 5 wt% nano filler exhibited both improved thermal conductivity of 0.527 W/(m·K) and breakdown strength of 118.3 kV/mm. It is found that micro-BN could effectively increase the thermal conductivity since efficient heat transform path would be built inside epoxy matrix. Meanwhile, nano-BN would bring in independent interfacial regions that capture carriers at low filler content. Based on the coordination of micro-nano particles, the thermal conductivity and breakdown strength can thus be enhanced simultaneously.
AB - Epoxy resin (EP) has been used as insulating material in power electronic transformer (PET), while low thermal conductivity of EP limits the heat dissipation efficiency of PET. Role of Micro-nano hexagonal boron nitride coordination on thermal conductivity and breakdown strength of epoxy composites was explored. A thermal conductivity of 0.544 W/(m·K) was obtained for 10 wt% BN/EP micro composites, increased by 149.5% compared with pristine epoxy. In addition, the specimen with a dual doping of 10 wt% h-BN and 5 wt% nano filler exhibited both improved thermal conductivity of 0.527 W/(m·K) and breakdown strength of 118.3 kV/mm. It is found that micro-BN could effectively increase the thermal conductivity since efficient heat transform path would be built inside epoxy matrix. Meanwhile, nano-BN would bring in independent interfacial regions that capture carriers at low filler content. Based on the coordination of micro-nano particles, the thermal conductivity and breakdown strength can thus be enhanced simultaneously.
KW - boron nitride
KW - dielectric properties
KW - epoxy
KW - power electronic transformer
KW - thermal conductivity
UR - https://www.scopus.com/pages/publications/85099397905
U2 - 10.1109/ICHVE49031.2020.9279570
DO - 10.1109/ICHVE49031.2020.9279570
M3 - 会议稿件
AN - SCOPUS:85099397905
T3 - 7th IEEE International Conference on High Voltage Engineering and Application, ICHVE 2020 - Proceedings
BT - 7th IEEE International Conference on High Voltage Engineering and Application, ICHVE 2020 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 7th IEEE International Conference on High Voltage Engineering and Application, ICHVE 2020
Y2 - 6 September 2020 through 10 September 2020
ER -