Cristin-resultat-ID: 1375207
Sist endret: 2. november 2016, 12:11
NVI-rapporteringsår: 2016
Resultat
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
2016

The effect of temperature cycling on mechanical and electrical properties of syndiotactic polypropylene

Bidragsytere:
  • Torstein Grav Aakre
  • Øystein Hestad
  • Jorunn Hølto og
  • Sverre Hvidsten

Bok

Om resultatet

Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Publiseringsår: 2016
ISBN:
  • 978-1-5090-2804-7

Klassifisering

Fagfelt (NPI)

Fagfelt: Elektrofag
- Fagområde: Realfag og teknologi

Beskrivelse Beskrivelse

Tittel

The effect of temperature cycling on mechanical and electrical properties of syndiotactic polypropylene

Sammendrag

Polypropylenes (PP) are a candidate to replace cross-linked polyethylene (XLPE) in medium voltage cables. This is due to its recyclability and potentially lower energy consumption during production. To prove to be an alternative, the PPs must meet the same requirements as for XLPE. The maximum service temperature for XLPE is 90 °C. The syndiotactic PP (sPP) was chosen for this study. sPP has a significantly higher melting temperature (∼130 °C) than for other alternatives, such as LDPE/MDPE, but softening and morphology changes during service could be challenging. Thin sPP discs were therefore subjected to 90 °C and also thermal cycling between 20 and 90 °C with heating and cooling rates of ±0.2 °C /min and ±3.5 °C /min. Pristine sPP has low conductivity, losses and good mechanical properties. The temperature treatment changed the mechanical and electrical properties slightly. The tensile strength was lowered and the melt peak changed, but the total crystallinity did not change (24–26 %). The dielectric losses increased by a factor 2.5 for thermally aged samples. The conductivity was low and almost unchanged compared to reference for samples subjected to temperature cycling. Heat treatment weakens the electrical and mechanical parameters

Bidragsytere

Torstein Grav Aakre

  • Tilknyttet:
    Forfatter
    ved Elkraftteknologi ved SINTEF Energi AS

Øystein Leif Gurandsrud Hestad

Bidragsyterens navn vises på dette resultatet som Øystein Hestad
  • Tilknyttet:
    Forfatter
    ved Elkraftteknologi ved SINTEF Energi AS

Jorunn Hølto

  • Tilknyttet:
    Forfatter
    ved Elkraftteknologi ved SINTEF Energi AS

Sverre Hvidsten

  • Tilknyttet:
    Forfatter
    ved Elkraftteknologi ved SINTEF Energi AS
1 - 4 av 4

Resultatet er en del av Resultatet er en del av

Proceedings of the 2016 IEEE International Conference on Dielectrics, 3-7 July 2016, University of Montpellier, France : ICD 2016.

ICD 2016, .. 2016, IEEE conference proceedings. Vitenskapelig antologi/Konferanseserie
1 - 1 av 1