By Topic

The dielectric permittivity of ceramic powders used in composite polymers

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Bouanga, C.V. ; Inst. de Rech. d''Hydro-Quebec (IREQ), Quebec City, QC, Canada ; Savoie, S. ; Couderc, H. ; Frechette, M.F.
more authors

The aim of this study is to measure the complex dielectric constant over a wide range of frequencies for ceramic powders often used as additives in polymer composites. The dielectric responses of alumina and boron nitride powders are presented. The variation of the dielectric constant in the studied frequency range (10-1 Hz to 10 kHz) showed that there is absorption of the water on the surface of the powder. Therefore, different treatments were applied: heating at 100°C for 48 hours and under vacuum at room temperature. A significant change on the value of the permittivity at low frequency has been observed after treatment. By comparing the results obtained before and after treatment, the dielectric response of the powder measured under vacuum showed stability over the studied frequency range at room temperature. The measured values of the permittivity of the powder were used to estimate those of the bulk material using a mixing law. This situation is discussed.

Published in:

Electrical Insulation and Dielectric Phenomena (CEIDP), 2011 Annual Report Conference on

Date of Conference:

16-19 Oct. 2011