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

Tampere University

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-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 language	English
Title of host publication	Proceedings of the 26th Nordic Insulation Symposium, NORD-IS 19
Publisher	Nordic Insulation Symposium
Pages	123-128
DOIs	https://doi.org/10.5324/nordis.v0i26.3291
Publication status	Published - 8 Aug 2019
MoE publication type	A4 Article in a conference publication
Event	26th Nordic Insulation Symposium on Materials, Components and Diagnostics, NORD-IS 19 - Tampere, Finland Duration: 12 Jun 2019 → 14 Jun 2019 http://www.tut.fi/nordis19/

Publication series

Series	Proceedings of the Nordic Insulation Symposium
Volume	26
ISSN	2535-3969

Conference

Conference	26th Nordic Insulation Symposium on Materials, Components and Diagnostics, NORD-IS 19
Country/Territory	Finland
City	Tampere
Period	12/06/19 → 14/06/19
Internet address	http://www.tut.fi/nordis19/

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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, NORD-IS 19 (pp. 123-128). 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 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.",

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",

year = "2019",

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

language = "English",

series = "Proceedings of the Nordic Insulation Symposium",

publisher = "Nordic Insulation Symposium",

pages = "123--128",

booktitle = "Proceedings of the 26th Nordic Insulation Symposium, NORD-IS 19",

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note = "26th Nordic Insulation Symposium on Materials, Components and Diagnostics, NORD-IS 19 ; Conference date: 12-06-2019 Through 14-06-2019",

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

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

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T2 - 26th Nordic Insulation Symposium on Materials, Components and Diagnostics, NORD-IS 19

AU - Rytöluoto, Ilkka

AU - Niittymäki, Minna

AU - Lahti, Kari

AU - Saarimäki, Eetta

AU - Flyktman, Timo

AU - Paajanen, Mika

AU - Karttunen, Mikko

PY - 2019/8/8

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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. Nordic Insulation Symposium. 2019. p. 123-128. (Proceedings of the Nordic Insulation Symposium, Vol. 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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