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https://nagoya.repo.nii.ac.jp/oai
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2023-01-16T03:59:10Z
320:321:322
Dielectric Properties of Epoxy/Alumina Nanocomposite Influenced by Control of Micrometric Agglomerates
Kurimoto, Muneaki
Okubo, Hitoshi
Kato, Katsumi
Hanai, Masahiro
Hoshina, Yoshikazu
Takei, Masafumi
Hayakawa, Naoki
open access
© 2010 IEEE. Reprinted, with permission, from Kurimoto Muneaki; Okubo Hitoshi; Kato Katsumi; Hanai Masahiro; Hoshina<br/>Yoshikazu; Takei Mmasafumi; Naoki Hayakawa, Dielectric Properties of Epoxy/Alumina Nanocomposite Influenced by Control of Micrometric Agglomerates, Dielectrics and Electrical Insulation, IEEE Transactions on, Jun/2010
Epoxy nanocomposite
alumina nanoparticle
ultrasonic wave
centrifugal force
agglomerate
particle dispersibility
tan δ
Introduction of metal oxide nanoparticles to polymer material is known to have unique dielectric behavior and significant advantages in electrical insulation performance in power apparatus. This paper presents an attempt to clarify the influence of dispersibility of nanoparticles, especially focusing on agglomerates, on dielectric properties of a nanocomposite system by changing particle dispersion processes. Experiments were carried out in epoxy/alumina nanocomposites with the particle dispersion techniques by applying ultrasonic wave and centrifugal force. For the dispersibility control of nanoparticles, we changed the duration of ultrasonic wave and centrifugal force. The experimental results clarified the effect of centrifugal force on the separation of agglomerates and the effect of ultrasonic wave on the disruption of agglomerates. Next, we examined the dielectric properties such as relative permittivity and tan δ of the nanocomposites. As the result, we verified that the permittivity of epoxy/alumina nanocomposites became low due to separation and disruption effects of the agglomerates.
IEEE
2010-06
eng
journal article
AM
http://hdl.handle.net/2237/14530
https://nagoya.repo.nii.ac.jp/records/12643
https://doi.org/10.1109/TDEI.2010.5492236
1070-9878
Dielectrics and Electrical Insulation, IEEE Transactions on
17
3
662
670
https://nagoya.repo.nii.ac.jp/record/12643/files/1099.pdf
application/pdf
569.2 kB
2018-02-20