6533b833fe1ef96bd129b77e
RESEARCH PRODUCT
Dielectric properties and partial discharge endurance of polypropylene-silica nanocomposite
Viivi KoivuMika PetterssonP NevalainenBjörn SonerudKari KannusJani PeltoMikko KarttunenHannes RantaM. TakalaPertti PakonenSuvi Virtanensubject
PermittivityMaterials scienceNanocompositeAnalytical chemistryDielectricCapacitancelaw.inventionCapacitorpartial dischargelawdielectric propertiessilicaPartial dischargeDielectric lossElectrical and Electronic EngineeringThin filmComposite materialpolypropylenedescription
This paper presents the results of the dielectric properties and partial discharge endurance measurements conducted on polypropylene (PP)-silica nanocomposite. The material compounds were analyzed with micro-Raman spectroscopy, X-ray tomography and transmission electron microscopy (TEM). ac and dc breakdown strength of the materials was measured. Dielectric response, capacitance and loss factor of the film samples were measured as a function of temperature and frequency. Partial discharge (PD) endurance of the reference PP and PP Silica nanocomposite was studied as a function of ac voltage. Material surfaces were analyzed after PD stress with optical microscopy. All dielectric measurements were done for oriented thin films with a thickness of 11-23 μm. The results were analyzed statistically to determine the effects of the additive on the properties of PP. The paper discusses the potential of PP Silica nanocomposite with a view to high voltage applications, especially power capacitors.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-08-01 | IEEE Transactions on Dielectrics and Electrical Insulation |