Modifications of dielectric properties of polyamides induced by long-term exposure to corona
Paper i proceeding, 2015

Long-time exposure of polyamides to energetic discharges and oxidizing gases can cause modifications of their dielectric properties. To quantify the effect, samples of pure and filled polyamides were aged in a corona treatment system. The corona induced changes in complex permittivity of both materials were investigated utilizing frequency domain dielectric spectroscopy. It was found that both the real and imaginary parts of the complex permittivity increased after the treatment, especially at low frequencies. This was associated with increased dc volume conductivities measured for both materials. The experimental data were analyzed by using a model incorporating Havriliak-Negami dipolar relaxation, dc conduction and low frequency dispersion for identifying the most affected by corona treatment processes.

polyamide

corona treatment

dielectric spectroscopy

complex permittivity

Författare

Yuesheng Zheng

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Sarath Kumara

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Yuriy Serdyuk

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Stanislaw Gubanski

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Proceedings of the 11th IEEE International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2015, Sydney, Australia, 19-22 July 2015

708-711

Styrkeområden

Energi

Ämneskategorier

Annan elektroteknik och elektronik

DOI

10.1109/ICPADM.2015.7295370

ISBN

978-1-4799-8902-7