Role of nano-filler on partial discharge resistance and dielectric breakdown strength of micro-Al2O3/epoxy composites

Zhe Li; Kenji Okamoto; Yoshimichi Ohki; Toshikatsu Tanaka

doi:10.1109/ICPADM.2009.5252321

Role of nano-filler on partial discharge resistance and dielectric breakdown strength of micro-Al₂O₃/epoxy composites

Zhe Li^*, Kenji Okamoto, Yoshimichi Ohki, Toshikatsu Tanaka

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

27 Citations (Scopus)

Abstract

Epoxy resin often suffers lower dielectric breakdown strength if micro-fillers are loaded. It might be possible to raise the once lowered breakdown strength, if nano-fillers are added. In this paper, such performances were investigated on model specimens consisting of alumina (Al₂O ₃). First of all, PD (partial discharge) behavior on the surfaces of samples was clarified in the insulation system consisting of a flat copper electrode attached on an epoxy substrate. Then, on the basis of finding, the breakdown strengths were investigated by using a sphere to sphere electrode structure with a flat sample inserted. Several materials consist of neat epoxy, 5%wt nano-Al₂O₃/epoxy composite, 60%wt micro-Al ₂O₃/epoxy composite and 2%wt nano-60% wt\micro-Al ₂O₃/epoxy composite. It was found that nano-micro-Al ₂O₃/epoxy composite is higher in both dielectric strength and PD resistance than micro-Al₂O₃/epoxy composite.

Original language	English
Title of host publication	2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009
Pages	753-756
Number of pages	4
DOIs	https://doi.org/10.1109/ICPADM.2009.5252321
Publication status	Published - 2009 Nov 16
Event	2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009 - Harbin, China Duration: 2009 Jul 19 → 2009 Jul 23

Publication series

Name	Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials

Other

Other	2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009
Country/Territory	China
City	Harbin
Period	09/7/19 → 09/7/23

Keywords

Breakdown strength
Epoxy
Nano-AlO
Nano-micro-composite
Partial discharge

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Materials Chemistry

Access to Document

10.1109/ICPADM.2009.5252321

Cite this

Li, Z., Okamoto, K., Ohki, Y., & Tanaka, T. (2009). Role of nano-filler on partial discharge resistance and dielectric breakdown strength of micro-Al₂O₃/epoxy composites. In 2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009 (pp. 753-756). [5252321] (Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials). https://doi.org/10.1109/ICPADM.2009.5252321

Role of nano-filler on partial discharge resistance and dielectric breakdown strength of micro-Al₂O₃/epoxy composites. / Li, Zhe; Okamoto, Kenji; Ohki, Yoshimichi et al.

2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009. 2009. p. 753-756 5252321 (Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Li, Z, Okamoto, K, Ohki, Y & Tanaka, T 2009, Role of nano-filler on partial discharge resistance and dielectric breakdown strength of micro-Al₂O₃/epoxy composites. in 2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009., 5252321, Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials, pp. 753-756, 2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009, Harbin, China, 09/7/19. https://doi.org/10.1109/ICPADM.2009.5252321

Li Z, Okamoto K, Ohki Y, Tanaka T. Role of nano-filler on partial discharge resistance and dielectric breakdown strength of micro-Al₂O₃/epoxy composites. In 2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009. 2009. p. 753-756. 5252321. (Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials). doi: 10.1109/ICPADM.2009.5252321

Li, Zhe ; Okamoto, Kenji ; Ohki, Yoshimichi et al. / Role of nano-filler on partial discharge resistance and dielectric breakdown strength of micro-Al₂O₃/epoxy composites. 2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009. 2009. pp. 753-756 (Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials).

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abstract = "Epoxy resin often suffers lower dielectric breakdown strength if micro-fillers are loaded. It might be possible to raise the once lowered breakdown strength, if nano-fillers are added. In this paper, such performances were investigated on model specimens consisting of alumina (Al2O 3). First of all, PD (partial discharge) behavior on the surfaces of samples was clarified in the insulation system consisting of a flat copper electrode attached on an epoxy substrate. Then, on the basis of finding, the breakdown strengths were investigated by using a sphere to sphere electrode structure with a flat sample inserted. Several materials consist of neat epoxy, 5%wt nano-Al2O3/epoxy composite, 60%wt micro-Al 2O3/epoxy composite and 2%wt nano-60% wt\micro-Al 2O3/epoxy composite. It was found that nano-micro-Al 2O3/epoxy composite is higher in both dielectric strength and PD resistance than micro-Al2O3/epoxy composite.",

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