CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Modifications of dielectric properties of polyamides induced by long-term exposure to corona

Yuesheng Zheng (Institutionen för material- och tillverkningsteknik, Högspänningsteknik) ; Sarath Kumara (Institutionen för material- och tillverkningsteknik, Högspänningsteknik) ; Yuriy Serdyuk (Institutionen för material- och tillverkningsteknik, Högspänningsteknik) ; Stanislaw Gubanski (Institutionen för 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 p. 708-711. (2015)
[Konferensbidrag, refereegranskat]

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.

Nyckelord: dielectric spectroscopy, complex permittivity, polyamide, corona treatment



Den här publikationen ingår i följande styrkeområden:

Läs mer om Chalmers styrkeområden  

Denna post skapades 2015-08-11. Senast ändrad 2016-08-23.
CPL Pubid: 220517

 

Läs direkt!


Länk till annan sajt (kan kräva inloggning)