Silica-Polypropylene Nanocomposites for Film Capacitors

Structure–Property Studies and the Role of Biaxial Stretching Conditions

Ilkka Rytöluoto, Minna Niittymäki, Kari Lahti, Eetta Saarimäki, Timo Flyktman, Mika Paajanen, Mikko Karttunen

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

Abstract

Biaxial-stretching-induced morphology development and dielectric properties of hydrophobic fumed silica-BOPP nanocomposite films were investigated. The precursor (cast) film morphology, pre-heating as well as biaxial stretching
temperature and stretch ratio were found to profoundly affect the silica-BOPP film bulk morphology, surface texture and the formation of particle/agglomerate-induced cavitation upon biaxial stretching. Isothermal high-field conductivity and thermally stimulated depolarization current measurements indicated decreasing high-field/high-temperature conductivity
and modification of trap density of states upon incorporation of nanosilica in comparison to neat BOPP. Large-area DC dielectric strength is, however, sensitive to thermal/mechanical stresses upon biaxial stretching, hence necessitating careful optimization of the nanocomposite formulation and processing.
Original languageEnglish
Title of host publicationProceedings of the 26th Nordic Insulation Symposium, NORD-IS 19
Pages123-128
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

NameProceedings of the Nordic Insulation Symposium
PublisherNordic Insulation Symposium
ISSN (Electronic)2535-3969

Conference

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

Fingerprint

polypropylene
capacitors
nanocomposites
silicon dioxide
cavitation flow
depolarization
dielectric properties
casts
textures
direct current
traps
formulations
conductivity
optimization
heating

Cite this

Rytöluoto, I., Niittymäki, M., Lahti, K., Saarimäki, E., Flyktman, T., Paajanen, M., & Karttunen, M. (2019). Silica-Polypropylene Nanocomposites for Film Capacitors: Structure–Property Studies and the Role of Biaxial Stretching Conditions. In Proceedings of the 26th Nordic Insulation Symposium, NORD-IS 19 (pp. 123-128). Proceedings of the Nordic Insulation Symposium, Vol.. 26 https://doi.org/10.5324/nordis.v0i26.3291
Rytöluoto, Ilkka ; Niittymäki, Minna ; Lahti, Kari ; Saarimäki, Eetta ; Flyktman, Timo ; Paajanen, Mika ; Karttunen, Mikko. / Silica-Polypropylene Nanocomposites for Film Capacitors : Structure–Property Studies and the Role of Biaxial Stretching Conditions. Proceedings of the 26th Nordic Insulation Symposium, NORD-IS 19. 2019. pp. 123-128 (Proceedings of the Nordic Insulation Symposium, Vol. 26).
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title = "Silica-Polypropylene Nanocomposites for Film Capacitors: Structure–Property Studies and the Role of Biaxial Stretching Conditions",
abstract = "Biaxial-stretching-induced morphology development and dielectric properties of hydrophobic fumed silica-BOPP nanocomposite films were investigated. The precursor (cast) film morphology, pre-heating as well as biaxial stretchingtemperature and stretch ratio were found to profoundly affect the silica-BOPP film bulk morphology, surface texture and the formation of particle/agglomerate-induced cavitation upon biaxial stretching. Isothermal high-field conductivity and thermally stimulated depolarization current measurements indicated decreasing high-field/high-temperature conductivityand modification of trap density of states upon incorporation of nanosilica in comparison to neat BOPP. Large-area DC dielectric strength is, however, sensitive to thermal/mechanical stresses upon biaxial stretching, hence necessitating careful optimization of the nanocomposite formulation and processing.",
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Rytöluoto, I, Niittymäki, M, Lahti, K, Saarimäki, E, Flyktman, T, Paajanen, M & Karttunen, M 2019, Silica-Polypropylene Nanocomposites for Film Capacitors: Structure–Property Studies and the Role of Biaxial Stretching Conditions. in Proceedings of the 26th Nordic Insulation Symposium, NORD-IS 19. Proceedings of the Nordic Insulation Symposium, vol. 26, pp. 123-128, 26th Nordic Insulation Symposium on Materials, Components and Diagnostics, NORD-IS 19, Tampere, Finland, 12/06/19. https://doi.org/10.5324/nordis.v0i26.3291

Silica-Polypropylene Nanocomposites for Film Capacitors : Structure–Property Studies and the Role of Biaxial Stretching Conditions. / Rytöluoto, Ilkka; Niittymäki, Minna; Lahti, Kari; Saarimäki, Eetta; Flyktman, Timo; Paajanen, Mika; Karttunen, Mikko.

Proceedings of the 26th Nordic Insulation Symposium, NORD-IS 19. 2019. p. 123-128 (Proceedings of the Nordic Insulation Symposium, Vol. 26).

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

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N2 - Biaxial-stretching-induced morphology development and dielectric properties of hydrophobic fumed silica-BOPP nanocomposite films were investigated. The precursor (cast) film morphology, pre-heating as well as biaxial stretchingtemperature and stretch ratio were found to profoundly affect the silica-BOPP film bulk morphology, surface texture and the formation of particle/agglomerate-induced cavitation upon biaxial stretching. Isothermal high-field conductivity and thermally stimulated depolarization current measurements indicated decreasing high-field/high-temperature conductivityand modification of trap density of states upon incorporation of nanosilica in comparison to neat BOPP. Large-area DC dielectric strength is, however, sensitive to thermal/mechanical stresses upon biaxial stretching, hence necessitating careful optimization of the nanocomposite formulation and processing.

AB - Biaxial-stretching-induced morphology development and dielectric properties of hydrophobic fumed silica-BOPP nanocomposite films were investigated. The precursor (cast) film morphology, pre-heating as well as biaxial stretchingtemperature and stretch ratio were found to profoundly affect the silica-BOPP film bulk morphology, surface texture and the formation of particle/agglomerate-induced cavitation upon biaxial stretching. Isothermal high-field conductivity and thermally stimulated depolarization current measurements indicated decreasing high-field/high-temperature conductivityand modification of trap density of states upon incorporation of nanosilica in comparison to neat BOPP. Large-area DC dielectric strength is, however, sensitive to thermal/mechanical stresses upon biaxial stretching, hence necessitating careful optimization of the nanocomposite formulation and processing.

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Rytöluoto I, Niittymäki M, Lahti K, Saarimäki E, Flyktman T, Paajanen M et al. Silica-Polypropylene Nanocomposites for Film Capacitors: Structure–Property Studies and the Role of Biaxial Stretching Conditions. In Proceedings of the 26th Nordic Insulation Symposium, NORD-IS 19. 2019. p. 123-128. (Proceedings of the Nordic Insulation Symposium, Vol. 26). https://doi.org/10.5324/nordis.v0i26.3291