Effects of Particle Dispersion on EL Inception and Extinction Fields of TiO2/Epoxy Nanocomposites

被引：0
|
作者：
Hirai, Motoshi [1 ]
Kurimoto, Muneaki [1 ]
Tohyama, Kazuyuki [2 ]
Sawada, Toru [3 ]
Yoshida, Shigeyoshi [3 ]
Umemoto, Takahiro [3 ,4 ]
Muto, Hirotaka [3 ]
机构：
[1] Nagoya Univ, Dept Elect Engn, Nagoya, Aichi 4648601, Japan
[2] Numazu Coll, Natl Inst Technol, Numazu, Shizuoka 4100022, Japan
[3] Mitsubishi Electr Corp, Adv Technol Res & Dev Ctr, Amagasaki, Hyogo 6610001, Japan
[4] Univ Tokyo, Tokyo 1138654, Japan
来源：
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2024年 / 31卷 / 04期
基金：
日本科学技术振兴机构;
关键词：
Electroluminescence (EL); epoxy; nanocomposites; particle dispersion; TiO2; SPACE-CHARGE; ELECTROLUMINESCENCE; DEGRADATION; INTERFACE; VOLTAGE;
D O I：
10.1109/TDEI.2024.3367653
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
It has been revealed that the ac breakdown strength of TiO2/epoxy nanocomposites, with good particle dispersion, is higher than that of unfilled epoxy resin. Here, the electroluminescence (EL) inception and extinction fields of TiO2/epoxy nanocomposites with varying particle dispersion states were examined to explain the mechanism underlying the breakdown strength enhancement. The findings revealed that the EL inception and extinction fields of TiO2/epoxy nanocomposites, with high particle dispersion, exceeded those of the unfilled epoxy resin, probably because the nanoparticles prevent the movement of electrons to gain energy. Conversely, TiO2/epoxy nanocomposites that contain agglomerates exhibit almost the same or lower EL inception and extinction fields compared to those of the unfilled epoxy resin. This is attributed to the acceleration of electrons to gain energy in the broad region of a high electric field surrounding the agglomerates.
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页码：1788 / 1796
页数：9
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