Partial discharge behaviour of biaxially orientated PET films : the effect of crystalline morphology
Tang, Rong and Liggat, John J. and Siew, Wah H. (2018) Partial discharge behaviour of biaxially orientated PET films : the effect of crystalline morphology. Polymer Degradation and Stability, 155. pp. 122-129. ISSN 0141-3910 (https://doi.org/10.1016/j.polymdegradstab.2018.07....)
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Abstract
The relationship between partial discharge (PD) induced breakdown behaviour and the crystallinemorphology of PET films used in photovoltaic devices has been explored and discussed in this work for the first time. Biaxially orientated PET films with and without BaSO4 filler were isothermally annealed at various temperatures before PD breakdown tests of the films to investigate the effect of crystalline morphology. Attenuated total reflectance - Fourier transform infrared spectroscopy (ATR-FTIR) and differential scanning calorimetry (DSC) were used to study the changes of crystallinity and lamellar thickness of the samples. It was found that both PD resistances and PD lifetimes could be significantly improved when the samples were annealed at temperatures above 210 °C. On the other hand, improvements were much less in the annealing temperature region between 180 and 210 °C. This, we propose, is because the thinner and less perfect lamellae formed by annealing at the lower temperatures are less effective at resisting ion bombardment and electrical tree propagation. On the other hand, the formation of thickened and perfected lamellae produced at higher annealing temperatures can effectively increase the tortuosity of electrical tree propagation paths, thereby increasing the PD lifetimes.
ORCID iDs
Tang, Rong, Liggat, John J. ORCID: https://orcid.org/0000-0003-4460-5178 and Siew, Wah H. ORCID: https://orcid.org/0000-0003-4000-6856;-
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Item type: Article ID code: 65339 Dates: DateEvent30 September 2018Published11 July 2018Published Online9 July 2018AcceptedSubjects: Science > Chemistry Department: Faculty of Science > Pure and Applied Chemistry
Strategic Research Themes > Advanced Manufacturing and Materials
Faculty of Engineering > Electronic and Electrical EngineeringDepositing user: Pure Administrator Date deposited: 03 Sep 2018 13:05 Last modified: 02 Sep 2024 00:51 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/65339