Dielectric Properties and Partial Discharge Endurance of Polypropylene- Silica Nanocomposite
Journal article, 2010

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 capac itors. © 2010 IEEE.


M. Takala

Tampere University of Technology

H. Ranta

Tampere University of Technology

P. Navalainen

Tampere University of Technology

P. Pakonen

Tampere University of Technology

J. Pelto

Technical Research Centre of Finland (VTT)

M. Karttunen

Technical Research Centre of Finland (VTT)

S. Virtanen

University of Jyväskylä

V. Koivu

University of Jyväskylä

M. Pettersson

University of Jyväskylä

Björn Sonerud

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

K Kannus

Tampere University of Technology

IEEE Transactions on Dielectrics and Electrical Insulation

1070-9878 (ISSN) 15584135 (eISSN)

Vol. 17 4 1259-1267 5539698

Subject Categories

Other Electrical Engineering, Electronic Engineering, Information Engineering



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