TY - GEN
T1 - Research on Electrical Properties of Surface-Modified Nano-SiO2/Epoxy Composites
AU - Xie, Zongliang
AU - Li, He
AU - Zhang, Siyu
AU - Gong, Ao
AU - Liu, Peng
AU - Peng, Zongren
AU - Wang, Qing
N1 - Funding Information:
ACKNOWLEDGMENT This work is supported by the science and technology project of State Grid Corporation of China. (SGLNDK00KJJS1900250)
Publisher Copyright:
© 2020 IEEE.
PY - 2020/9/6
Y1 - 2020/9/6
N2 - In order to improve the compatibility of organic-inorganic phases to obtain enhanced multi-physical properties in the polymer nanocomposites, surface functionalization of inorganic fillers is of great significance and has been widely employed in hybrid composite approaches. This work describes a comparative study on the effect of varied surface chemistries of nano-SiO on the electrical properties of epoxy resin nanocomposites. It is found that the electrical properties, including DC volume resistivity and dielectric breakdown strength of the nanocomposites with epoxy chain-grafted SiO are simultaneously improved in comparison with those of the neat epoxy resin as well as the composites with unmodified SiO and silane coupling agent-modified SiO. The surface-grafted epoxy chain, which has the same chemical structures with resin matrix, not only boosts the filler dispersion but also provides the active groups for the establishment of the robust bonds during the curing processes of thermoset resin composites. These results verify the structural design of organic-inorganic interface with covalent bonds is effective to enhance the electrical properties, and has general applicability and reference value for developing high-performance thermoset resin-based composites.
AB - In order to improve the compatibility of organic-inorganic phases to obtain enhanced multi-physical properties in the polymer nanocomposites, surface functionalization of inorganic fillers is of great significance and has been widely employed in hybrid composite approaches. This work describes a comparative study on the effect of varied surface chemistries of nano-SiO on the electrical properties of epoxy resin nanocomposites. It is found that the electrical properties, including DC volume resistivity and dielectric breakdown strength of the nanocomposites with epoxy chain-grafted SiO are simultaneously improved in comparison with those of the neat epoxy resin as well as the composites with unmodified SiO and silane coupling agent-modified SiO. The surface-grafted epoxy chain, which has the same chemical structures with resin matrix, not only boosts the filler dispersion but also provides the active groups for the establishment of the robust bonds during the curing processes of thermoset resin composites. These results verify the structural design of organic-inorganic interface with covalent bonds is effective to enhance the electrical properties, and has general applicability and reference value for developing high-performance thermoset resin-based composites.
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U2 - 10.1109/ICHVE49031.2020.9279646
DO - 10.1109/ICHVE49031.2020.9279646
M3 - Conference contribution
AN - SCOPUS:85099342874
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 -