Abstract
Dielectric properties were compared between two kinds of low-density polyethylene (LDPE) composites prepared by adding near spherical MgO fillers with different diameters of around several ten nm and several m. In the whole range of temperature from 0°C to 90°C, the conductivity is decreased and the permittivity is increased by the addition of fillers, irrespective of their sizes. However, the decrement in the conductivity is more significant and permittivity increment is suppressed more in the case of the nm fillers. In addition, a drastic increase in dielectric loss factor, observed at low frequencies, is suppressed more significantly by the addition of the nm fillers. While the formation of packet-like charge, observed in LDPE, is suppressed by both fillers, the effect is far more significant in the nanocomposites. This means that the nano-fillers suppress the conductivity enhancement by the voltage application more effectively.
| Original language | English |
|---|---|
| Article number | 5361597 |
| Pages (from-to) | 1735-1742 |
| Number of pages | 8 |
| Journal | IEEE Transactions on Dielectrics and Electrical Insulation |
| Volume | 16 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2009 Dec |
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Keywords
- Complex permittivity
- Conductivity
- Magnesium oxide
- Polyethylene insulation
- Polymer nanocomposites
- Space charge distribution
ASJC Scopus subject areas
- Electrical and Electronic Engineering
Cite this
Superiority of dielectric properties of LDPE/MgO nanocomposites over microcomposites. / Ishimoto, Kazuyuki; Kanegae, Etsu; Ohki, Yoshimichi; Tanaka, Toshikatsu; Sekiguchi, Yoitsu; Murata, Yoshinao; Reddy, C. C.
In: IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 16, No. 6, 5361597, 12.2009, p. 1735-1742.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Superiority of dielectric properties of LDPE/MgO nanocomposites over microcomposites
AU - Ishimoto, Kazuyuki
AU - Kanegae, Etsu
AU - Ohki, Yoshimichi
AU - Tanaka, Toshikatsu
AU - Sekiguchi, Yoitsu
AU - Murata, Yoshinao
AU - Reddy, C. C.
PY - 2009/12
Y1 - 2009/12
N2 - Dielectric properties were compared between two kinds of low-density polyethylene (LDPE) composites prepared by adding near spherical MgO fillers with different diameters of around several ten nm and several m. In the whole range of temperature from 0°C to 90°C, the conductivity is decreased and the permittivity is increased by the addition of fillers, irrespective of their sizes. However, the decrement in the conductivity is more significant and permittivity increment is suppressed more in the case of the nm fillers. In addition, a drastic increase in dielectric loss factor, observed at low frequencies, is suppressed more significantly by the addition of the nm fillers. While the formation of packet-like charge, observed in LDPE, is suppressed by both fillers, the effect is far more significant in the nanocomposites. This means that the nano-fillers suppress the conductivity enhancement by the voltage application more effectively.
AB - Dielectric properties were compared between two kinds of low-density polyethylene (LDPE) composites prepared by adding near spherical MgO fillers with different diameters of around several ten nm and several m. In the whole range of temperature from 0°C to 90°C, the conductivity is decreased and the permittivity is increased by the addition of fillers, irrespective of their sizes. However, the decrement in the conductivity is more significant and permittivity increment is suppressed more in the case of the nm fillers. In addition, a drastic increase in dielectric loss factor, observed at low frequencies, is suppressed more significantly by the addition of the nm fillers. While the formation of packet-like charge, observed in LDPE, is suppressed by both fillers, the effect is far more significant in the nanocomposites. This means that the nano-fillers suppress the conductivity enhancement by the voltage application more effectively.
KW - Complex permittivity
KW - Conductivity
KW - Magnesium oxide
KW - Polyethylene insulation
KW - Polymer nanocomposites
KW - Space charge distribution
UR - http://www.scopus.com/inward/record.url?scp=73649140979&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=73649140979&partnerID=8YFLogxK
U2 - 10.1109/TDEI.2009.5361597
DO - 10.1109/TDEI.2009.5361597
M3 - Article
AN - SCOPUS:73649140979
VL - 16
SP - 1735
EP - 1742
JO - IEEE Transactions on Dielectrics and Electrical Insulation
JF - IEEE Transactions on Dielectrics and Electrical Insulation
SN - 1070-9878
IS - 6
M1 - 5361597
ER -