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

doi:10.5324/nordis.v0i26.3291

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

Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

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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 language	English
Title of host publication	Proceedings of the 26th Nordic Insulation Symposium
Publisher	Nordic Insulation Symposium
Pages	123-128
DOIs	https://doi.org/10.5324/nordis.v0i26.3291
Publication status	Published - 8 Aug 2019
Publication type	A4 Article in conference proceedings
Event	Nordic Insulation Symposium - Duration: 1 Jan 1900 → …

Publication series

Name	Proceedings of the Nordic Insulation Symposium
Publisher	Nordic Insulation Symposium
Number	26
ISSN (Electronic)	2535-3969

Conference

Conference	Nordic Insulation Symposium
Period	1/01/00 → …

Publication forum classification

Publication forum level 1

Access to Document

10.5324/nordis.v0i26.3291Licence: CC BY

Silica-Polypropylene Nanocomposites for Film CapacitorsFinal published version, 3.58 MBLicence: CC BY

http://urn.fi/URN:NBN:fi:tuni-201912207048

High Voltage Laboratory
Lahti, K. (Contact)
Electrical Engineering
Facility/equipment: Research infrastructure

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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 (pp. 123-128). ( Proceedings of the Nordic Insulation Symposium ; No. 26). Nordic Insulation Symposium. https://doi.org/10.5324/nordis.v0i26.3291

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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 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.",

author = "Ilkka Ryt{\"o}luoto and Minna Niittym{\"a}ki and Kari Lahti and Eetta Saarim{\"a}ki and Timo Flyktman and Mika Paajanen and Mikko Karttunen",

note = "EXT={"}Ryt{\"o}luoto, Ilkka{"}; Nordic Insulation Symposium ; Conference date: 01-01-1900",

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doi = "10.5324/nordis.v0i26.3291",

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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 . Proceedings of the Nordic Insulation Symposium , no. 26, Nordic Insulation Symposium, pp. 123-128, Nordic Insulation Symposium, 1/01/00. 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 et al.
Proceedings of the 26th Nordic Insulation Symposium . Nordic Insulation Symposium, 2019. p. 123-128 ( Proceedings of the Nordic Insulation Symposium ; No. 26).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

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T1 - Silica-Polypropylene Nanocomposites for Film Capacitors: Structure–Property Studies and the Role of Biaxial Stretching Conditions

AU - Rytöluoto, Ilkka

AU - Niittymäki, Minna

AU - Lahti, Kari

AU - Saarimäki, Eetta

AU - Flyktman, Timo

AU - Paajanen, Mika

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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 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.

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 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.

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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 . Nordic Insulation Symposium. 2019. p. 123-128. ( Proceedings of the Nordic Insulation Symposium ; 26). doi: 10.5324/nordis.v0i26.3291

Silica-Polypropylene Nanocomposites for Film Capacitors: Structure–Property Studies and the Role of Biaxial Stretching Conditions

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