Solution Modified Fumed Silica and Its Effect on Charge Trapping Behavior of PP/POE/Silica Nanodielectrics

Amirhossein Mahtabani, Ilkka Rytöluoto, Xiaozhen He, Eetta Saarimäki, Kari Lahti, Mika Paajanen, Rafal Anyszka, Wilma Dierkes, Anke Blume

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Various dielectric nanocomposite materials are studied in the frame of the European Commission funded project GRIDABLE. This project has the aim to develop DC cable extruded insulation and medium and low voltage DC capacitor films exhibiting enhanced performance with respect to presently used materials. The nanocomposites intended for cable applications are polypropylene (PP)/polyolefin elastomer (POE) blends filled with surface modified nano-silica particles. The surface modification is carried out via the state-of-the-art solution method using a polar silane as the modifying agent. Thermally Stimulated Depolarization Current (TSDC) measurements were carried out in order to study the charge trapping behavior of the nanocomposite samples. TSDC results indicate that the addition of the treated nano-silica, for most cases, reduces the density of the deep traps significantly. The effect of the addition of silica nanoparticles - both modified and unmodified - on the crystallinity of the samples was studied using X-ray Diffraction (XRD). This is important as the charge trapping properties of the nanodielectrics can be affected by the degree of crystallinity. While more detailed studies are necessary, these results imply that the depth and the density of the deep trap states is profoundly influenced by the level of the silica modification i.e. the amount of the grafted silane on the silica surface.
Original languageEnglish
Title of host publicationProceedings of the 26th Nordic Insulation Symposium, NORD-IS 19
Pages129-133
DOIs
Publication statusPublished - 8 Aug 2019
MoE publication typeA4 Article in a conference publication
Event26th Nordic Insulation Symposium on Materials, Components and Diagnostics, NORD-IS 19 - Tampere, Finland
Duration: 12 Jun 201914 Jun 2019
http://www.tut.fi/nordis19/

Publication series

SeriesProceedings of the Nordic Insulation Symposium
Volume26
ISSN2535-3969

Conference

Conference26th Nordic Insulation Symposium on Materials, Components and Diagnostics, NORD-IS 19
CountryFinland
CityTampere
Period12/06/1914/06/19
Internet address

Fingerprint

elastomers
polypropylene
trapping
silicon dioxide
nanocomposites
silanes
depolarization
cables
crystallinity
direct current
traps
insulation
low voltage
capacitors
nanoparticles
electric potential
diffraction
x rays

Cite this

Mahtabani, A., Rytöluoto, I., He, X., Saarimäki, E., Lahti, K., Paajanen, M., ... Blume, A. (2019). Solution Modified Fumed Silica and Its Effect on Charge Trapping Behavior of PP/POE/Silica Nanodielectrics. In Proceedings of the 26th Nordic Insulation Symposium, NORD-IS 19 (pp. 129-133). Proceedings of the Nordic Insulation Symposium, Vol.. 26 https://doi.org/10.5324/nordis.v0i26.3292
Mahtabani, Amirhossein ; Rytöluoto, Ilkka ; He, Xiaozhen ; Saarimäki, Eetta ; Lahti, Kari ; Paajanen, Mika ; Anyszka, Rafal ; Dierkes, Wilma ; Blume, Anke. / Solution Modified Fumed Silica and Its Effect on Charge Trapping Behavior of PP/POE/Silica Nanodielectrics. Proceedings of the 26th Nordic Insulation Symposium, NORD-IS 19. 2019. pp. 129-133 (Proceedings of the Nordic Insulation Symposium, Vol. 26).
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title = "Solution Modified Fumed Silica and Its Effect on Charge Trapping Behavior of PP/POE/Silica Nanodielectrics",
abstract = "Various dielectric nanocomposite materials are studied in the frame of the European Commission funded project GRIDABLE. This project has the aim to develop DC cable extruded insulation and medium and low voltage DC capacitor films exhibiting enhanced performance with respect to presently used materials. The nanocomposites intended for cable applications are polypropylene (PP)/polyolefin elastomer (POE) blends filled with surface modified nano-silica particles. The surface modification is carried out via the state-of-the-art solution method using a polar silane as the modifying agent. Thermally Stimulated Depolarization Current (TSDC) measurements were carried out in order to study the charge trapping behavior of the nanocomposite samples. TSDC results indicate that the addition of the treated nano-silica, for most cases, reduces the density of the deep traps significantly. The effect of the addition of silica nanoparticles - both modified and unmodified - on the crystallinity of the samples was studied using X-ray Diffraction (XRD). This is important as the charge trapping properties of the nanodielectrics can be affected by the degree of crystallinity. While more detailed studies are necessary, these results imply that the depth and the density of the deep trap states is profoundly influenced by the level of the silica modification i.e. the amount of the grafted silane on the silica surface.",
author = "Amirhossein Mahtabani and Ilkka Ryt{\"o}luoto and Xiaozhen He and Eetta Saarim{\"a}ki and Kari Lahti and Mika Paajanen and Rafal Anyszka and Wilma Dierkes and Anke Blume",
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Mahtabani, A, Rytöluoto, I, He, X, Saarimäki, E, Lahti, K, Paajanen, M, Anyszka, R, Dierkes, W & Blume, A 2019, Solution Modified Fumed Silica and Its Effect on Charge Trapping Behavior of PP/POE/Silica Nanodielectrics. in Proceedings of the 26th Nordic Insulation Symposium, NORD-IS 19. Proceedings of the Nordic Insulation Symposium, vol. 26, pp. 129-133, 26th Nordic Insulation Symposium on Materials, Components and Diagnostics, NORD-IS 19, Tampere, Finland, 12/06/19. https://doi.org/10.5324/nordis.v0i26.3292

Solution Modified Fumed Silica and Its Effect on Charge Trapping Behavior of PP/POE/Silica Nanodielectrics. / Mahtabani, Amirhossein; Rytöluoto, Ilkka; He, Xiaozhen; Saarimäki, Eetta; Lahti, Kari; Paajanen, Mika; Anyszka, Rafal; Dierkes, Wilma; Blume, Anke.

Proceedings of the 26th Nordic Insulation Symposium, NORD-IS 19. 2019. p. 129-133 (Proceedings of the Nordic Insulation Symposium, Vol. 26).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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T1 - Solution Modified Fumed Silica and Its Effect on Charge Trapping Behavior of PP/POE/Silica Nanodielectrics

AU - Mahtabani, Amirhossein

AU - Rytöluoto, Ilkka

AU - He, Xiaozhen

AU - Saarimäki, Eetta

AU - Lahti, Kari

AU - Paajanen, Mika

AU - Anyszka, Rafal

AU - Dierkes, Wilma

AU - Blume, Anke

PY - 2019/8/8

Y1 - 2019/8/8

N2 - Various dielectric nanocomposite materials are studied in the frame of the European Commission funded project GRIDABLE. This project has the aim to develop DC cable extruded insulation and medium and low voltage DC capacitor films exhibiting enhanced performance with respect to presently used materials. The nanocomposites intended for cable applications are polypropylene (PP)/polyolefin elastomer (POE) blends filled with surface modified nano-silica particles. The surface modification is carried out via the state-of-the-art solution method using a polar silane as the modifying agent. Thermally Stimulated Depolarization Current (TSDC) measurements were carried out in order to study the charge trapping behavior of the nanocomposite samples. TSDC results indicate that the addition of the treated nano-silica, for most cases, reduces the density of the deep traps significantly. The effect of the addition of silica nanoparticles - both modified and unmodified - on the crystallinity of the samples was studied using X-ray Diffraction (XRD). This is important as the charge trapping properties of the nanodielectrics can be affected by the degree of crystallinity. While more detailed studies are necessary, these results imply that the depth and the density of the deep trap states is profoundly influenced by the level of the silica modification i.e. the amount of the grafted silane on the silica surface.

AB - Various dielectric nanocomposite materials are studied in the frame of the European Commission funded project GRIDABLE. This project has the aim to develop DC cable extruded insulation and medium and low voltage DC capacitor films exhibiting enhanced performance with respect to presently used materials. The nanocomposites intended for cable applications are polypropylene (PP)/polyolefin elastomer (POE) blends filled with surface modified nano-silica particles. The surface modification is carried out via the state-of-the-art solution method using a polar silane as the modifying agent. Thermally Stimulated Depolarization Current (TSDC) measurements were carried out in order to study the charge trapping behavior of the nanocomposite samples. TSDC results indicate that the addition of the treated nano-silica, for most cases, reduces the density of the deep traps significantly. The effect of the addition of silica nanoparticles - both modified and unmodified - on the crystallinity of the samples was studied using X-ray Diffraction (XRD). This is important as the charge trapping properties of the nanodielectrics can be affected by the degree of crystallinity. While more detailed studies are necessary, these results imply that the depth and the density of the deep trap states is profoundly influenced by the level of the silica modification i.e. the amount of the grafted silane on the silica surface.

U2 - 10.5324/nordis.v0i26.3292

DO - 10.5324/nordis.v0i26.3292

M3 - Conference article in proceedings

T3 - Proceedings of the Nordic Insulation Symposium

SP - 129

EP - 133

BT - Proceedings of the 26th Nordic Insulation Symposium, NORD-IS 19

ER -

Mahtabani A, Rytöluoto I, He X, Saarimäki E, Lahti K, Paajanen M et al. Solution Modified Fumed Silica and Its Effect on Charge Trapping Behavior of PP/POE/Silica Nanodielectrics. In Proceedings of the 26th Nordic Insulation Symposium, NORD-IS 19. 2019. p. 129-133. (Proceedings of the Nordic Insulation Symposium, Vol. 26). https://doi.org/10.5324/nordis.v0i26.3292