Various dielectric characteristics of polymer nanocomposites

T. Tanaka, M. Frechette, D. P. Agoris, A. Campus, J. Castellon, J. Densley, R. S. Gorur, S. M. Gubanski, M. Henriksen, H. Hillborg, J. Holboell, M. Jeroense, J. Kindersberger, J. Y. Koo, A. Krivda, G. C. Montanari, P. Morshuis, M. Nagao, S. Pelissou, C. W. Reed & 3 others H. Sedding, T. Shimizu, H. J. Winter

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

CIGRE Task Force D1.16.03 was set up in 2002 to investigate emerging advanced polymer nanocomposites as dielectrics and electrical insulation. Polymer nanocomposites are defined as polymers filled with a few wt% inorganic nano-fillers, defined as particles <100 nm. They are superior in the physical, chemical, mechanical and electrical properties over base polymers and conventional micro-filled polymers. It was elucidated that electrical and dielectric properties can be improved, when dielectric polymers are nanostructured. The paper reviews all the characteristics of dielectric permittivity, dielectric loss, dc conductivity, high field conduction, space charge, electroluminescence (EL), thermally stimulated currents (TSC), partial discharge (PD) resistance, treeing resistance, tracking resistance, breakdown (BD) strength and the like. Materials investigated include polyethylene (PE), polypropylene (PP), ethylene vinyl acetate (EVA), polyamide (PA), polyimide (PI), epoxy, silicone rubber with layered silicate, silica, alumina, titanate and ZnO. Effects of nano-filler addition are described as below: (1) Permittivity decreases, if properly nanostructured. (2) Dielectric loss may decrease at 50/60 Hz, and exhibits complicated dependence on frequency. (3) Low field dc conductivity increases in PP and EVA/layered silicate nanocomposites. But it decreases in polyamide/layered silicate and polyimide/silica nanocomposites. (4) High field conductivity decreases. Threshold to transition decreases. (5) Space charge decreases especially at high field. Threshold field decreases. (6) TSC peak shifts to higher temperature for PA/silica nanocomposites. (7) Threshold field for EL increases for epoxy/titania nanocomposites. Response becomes faster. (8) Breakdown strength increases. Time to BD increases much in treeing experiments. (9) PD resistance improves much. (10) Tracking resistance increases for silicone rubber. (11) Thermal endurance increases. Change in free volume, carrier trap depth, thermal conductivity and glass transition temperature is also discussed. Concepts of interaction zones and a multi-core model have been proposed to explain the effects of nanofillers. It is concluded from the data obtained thus far that polymer nanocomposites are promising as future advanced dielectrics and electrical insulating materials.

Original languageEnglish (US)
Title of host publication41st International Conference on Large High Voltage Electric Systems 2006, CIGRE 2006
StatePublished - 2006
Event41st International Conference on Large High Voltage Electric Systems 2006, CIGRE 2006 - Paris, France
Duration: Aug 27 2006Sep 1 2006

Other

Other41st International Conference on Large High Voltage Electric Systems 2006, CIGRE 2006
CountryFrance
CityParis
Period8/27/069/1/06

Fingerprint

Nanocomposites
Polymers
Polyamides
Silicates
Filled polymers
Partial discharges
Silica
Electroluminescence
Dielectric losses
Electric space charge
Polyimides
Silicones
Fillers
Polypropylenes
Rubber
Ethylene
Electric properties
Permittivity
Insulating materials
Free volume

Keywords

  • Dielectric properties
  • Insulation characteristics
  • Nanocomposites
  • Nanodielectrics
  • Nanomaterials
  • Polymer nanocomposites

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Tanaka, T., Frechette, M., Agoris, D. P., Campus, A., Castellon, J., Densley, J., ... Winter, H. J. (2006). Various dielectric characteristics of polymer nanocomposites. In 41st International Conference on Large High Voltage Electric Systems 2006, CIGRE 2006

Various dielectric characteristics of polymer nanocomposites. / Tanaka, T.; Frechette, M.; Agoris, D. P.; Campus, A.; Castellon, J.; Densley, J.; Gorur, R. S.; Gubanski, S. M.; Henriksen, M.; Hillborg, H.; Holboell, J.; Jeroense, M.; Kindersberger, J.; Koo, J. Y.; Krivda, A.; Montanari, G. C.; Morshuis, P.; Nagao, M.; Pelissou, S.; Reed, C. W.; Sedding, H.; Shimizu, T.; Winter, H. J.

41st International Conference on Large High Voltage Electric Systems 2006, CIGRE 2006. 2006.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tanaka, T, Frechette, M, Agoris, DP, Campus, A, Castellon, J, Densley, J, Gorur, RS, Gubanski, SM, Henriksen, M, Hillborg, H, Holboell, J, Jeroense, M, Kindersberger, J, Koo, JY, Krivda, A, Montanari, GC, Morshuis, P, Nagao, M, Pelissou, S, Reed, CW, Sedding, H, Shimizu, T & Winter, HJ 2006, Various dielectric characteristics of polymer nanocomposites. in 41st International Conference on Large High Voltage Electric Systems 2006, CIGRE 2006. 41st International Conference on Large High Voltage Electric Systems 2006, CIGRE 2006, Paris, France, 8/27/06.
Tanaka T, Frechette M, Agoris DP, Campus A, Castellon J, Densley J et al. Various dielectric characteristics of polymer nanocomposites. In 41st International Conference on Large High Voltage Electric Systems 2006, CIGRE 2006. 2006
Tanaka, T. ; Frechette, M. ; Agoris, D. P. ; Campus, A. ; Castellon, J. ; Densley, J. ; Gorur, R. S. ; Gubanski, S. M. ; Henriksen, M. ; Hillborg, H. ; Holboell, J. ; Jeroense, M. ; Kindersberger, J. ; Koo, J. Y. ; Krivda, A. ; Montanari, G. C. ; Morshuis, P. ; Nagao, M. ; Pelissou, S. ; Reed, C. W. ; Sedding, H. ; Shimizu, T. ; Winter, H. J. / Various dielectric characteristics of polymer nanocomposites. 41st International Conference on Large High Voltage Electric Systems 2006, CIGRE 2006. 2006.
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keywords = "Dielectric properties, Insulation characteristics, Nanocomposites, Nanodielectrics, Nanomaterials, Polymer nanocomposites",
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AU - Tanaka, T.

AU - Frechette, M.

AU - Agoris, D. P.

AU - Campus, A.

AU - Castellon, J.

AU - Densley, J.

AU - Gorur, R. S.

AU - Gubanski, S. M.

AU - Henriksen, M.

AU - Hillborg, H.

AU - Holboell, J.

AU - Jeroense, M.

AU - Kindersberger, J.

AU - Koo, J. Y.

AU - Krivda, A.

AU - Montanari, G. C.

AU - Morshuis, P.

AU - Nagao, M.

AU - Pelissou, S.

AU - Reed, C. W.

AU - Sedding, H.

AU - Shimizu, T.

AU - Winter, H. J.

PY - 2006

Y1 - 2006

N2 - CIGRE Task Force D1.16.03 was set up in 2002 to investigate emerging advanced polymer nanocomposites as dielectrics and electrical insulation. Polymer nanocomposites are defined as polymers filled with a few wt% inorganic nano-fillers, defined as particles <100 nm. They are superior in the physical, chemical, mechanical and electrical properties over base polymers and conventional micro-filled polymers. It was elucidated that electrical and dielectric properties can be improved, when dielectric polymers are nanostructured. The paper reviews all the characteristics of dielectric permittivity, dielectric loss, dc conductivity, high field conduction, space charge, electroluminescence (EL), thermally stimulated currents (TSC), partial discharge (PD) resistance, treeing resistance, tracking resistance, breakdown (BD) strength and the like. Materials investigated include polyethylene (PE), polypropylene (PP), ethylene vinyl acetate (EVA), polyamide (PA), polyimide (PI), epoxy, silicone rubber with layered silicate, silica, alumina, titanate and ZnO. Effects of nano-filler addition are described as below: (1) Permittivity decreases, if properly nanostructured. (2) Dielectric loss may decrease at 50/60 Hz, and exhibits complicated dependence on frequency. (3) Low field dc conductivity increases in PP and EVA/layered silicate nanocomposites. But it decreases in polyamide/layered silicate and polyimide/silica nanocomposites. (4) High field conductivity decreases. Threshold to transition decreases. (5) Space charge decreases especially at high field. Threshold field decreases. (6) TSC peak shifts to higher temperature for PA/silica nanocomposites. (7) Threshold field for EL increases for epoxy/titania nanocomposites. Response becomes faster. (8) Breakdown strength increases. Time to BD increases much in treeing experiments. (9) PD resistance improves much. (10) Tracking resistance increases for silicone rubber. (11) Thermal endurance increases. Change in free volume, carrier trap depth, thermal conductivity and glass transition temperature is also discussed. Concepts of interaction zones and a multi-core model have been proposed to explain the effects of nanofillers. It is concluded from the data obtained thus far that polymer nanocomposites are promising as future advanced dielectrics and electrical insulating materials.

AB - CIGRE Task Force D1.16.03 was set up in 2002 to investigate emerging advanced polymer nanocomposites as dielectrics and electrical insulation. Polymer nanocomposites are defined as polymers filled with a few wt% inorganic nano-fillers, defined as particles <100 nm. They are superior in the physical, chemical, mechanical and electrical properties over base polymers and conventional micro-filled polymers. It was elucidated that electrical and dielectric properties can be improved, when dielectric polymers are nanostructured. The paper reviews all the characteristics of dielectric permittivity, dielectric loss, dc conductivity, high field conduction, space charge, electroluminescence (EL), thermally stimulated currents (TSC), partial discharge (PD) resistance, treeing resistance, tracking resistance, breakdown (BD) strength and the like. Materials investigated include polyethylene (PE), polypropylene (PP), ethylene vinyl acetate (EVA), polyamide (PA), polyimide (PI), epoxy, silicone rubber with layered silicate, silica, alumina, titanate and ZnO. Effects of nano-filler addition are described as below: (1) Permittivity decreases, if properly nanostructured. (2) Dielectric loss may decrease at 50/60 Hz, and exhibits complicated dependence on frequency. (3) Low field dc conductivity increases in PP and EVA/layered silicate nanocomposites. But it decreases in polyamide/layered silicate and polyimide/silica nanocomposites. (4) High field conductivity decreases. Threshold to transition decreases. (5) Space charge decreases especially at high field. Threshold field decreases. (6) TSC peak shifts to higher temperature for PA/silica nanocomposites. (7) Threshold field for EL increases for epoxy/titania nanocomposites. Response becomes faster. (8) Breakdown strength increases. Time to BD increases much in treeing experiments. (9) PD resistance improves much. (10) Tracking resistance increases for silicone rubber. (11) Thermal endurance increases. Change in free volume, carrier trap depth, thermal conductivity and glass transition temperature is also discussed. Concepts of interaction zones and a multi-core model have been proposed to explain the effects of nanofillers. It is concluded from the data obtained thus far that polymer nanocomposites are promising as future advanced dielectrics and electrical insulating materials.

KW - Dielectric properties

KW - Insulation characteristics

KW - Nanocomposites

KW - Nanodielectrics

KW - Nanomaterials

KW - Polymer nanocomposites

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