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Tracking and erosion of polydimethlysiloxane with different molecular weight for outdoor insulation

DOITrouver le DOI : https://doi.org/10.1109/TDEI.2023.3235861
AuteurRechercher : 1Identifiant ORCID : https://orcid.org/0000-0003-1619-6178; Rechercher : 1; Rechercher : 1; Rechercher : 2Identifiant ORCID : https://orcid.org/0000-0002-0951-4775; Rechercher : 3Identifiant ORCID : https://orcid.org/0000-0003-3270-5358; Rechercher : 4; Rechercher : 5
Affiliation
  1. Qatar University. Center for Advanced Materials
  2. Conseil national de recherches Canada. Centre de recherche en métrologie
  3. University of Waterloo. Electrical and Computer Engineering Department
  4. Texas A&M University at Qatar. Chemical Engineering Program
  5. Qatar University. Department of Mathematics, Statistics and Physics
Bailleur de fondsRechercher : Qatar National Research Fund (a member of Qatar Foundation) National Priorities Research Program
FormatTexte, Article
Résumé
In this article, the degradation mechanisms of unfilled polydimethylsiloxane with different molecular weights are investigated under dry-band arcing using the inclined plane tracking and erosion test and material characterization techniques. Tracks of carbonaceous residue formed as byproducts of radical-based crosslinking are prevalent over erosion as the molecular weight increases. Erosion becomes dominant with polydimethylsiloxane that undergoes mainly depolymerization during degradation at lower molecular weights. Accordingly, tracking due to a progressive carbonaceous residue formed on the surface is the degradation pattern observed under the dry-band arcing for the polydimethylsiloxane with higher molecular weights (45 000 and 28 000 g/mol) during the inclined plane test (IPT), whereas erosion due to depolymerization is more evident on the polydimethylsiloxane surfaces with lower molecular weights (17 200 and 9400 g/mol). This study highlights the possibility to tune the tracking and erosion tendency of silicone rubber outdoor insulation by controlling the molecular weight of the organosiloxane base, without the sole reliance on fillers as commonly perceived.
Date de publication
Maison d’éditionIEEE
Dans
  • IEEE Transactions on Dielectrics and Electrical Insulation 30, nº 2 (12 janvier 2023) : 902–907.
Langueanglais
Publications évaluées par des pairsOui
Exporter la noticeExporter en format RIS
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Identificateur de l’enregistrement4f2f8d50-0d08-4fe0-9553-c18d257463fc
Enregistrement créé2023-07-05
Enregistrement modifié2023-07-05

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