Determination of the activation energy of the relaxation time of the composite cellulose: synthetic ester with a high water content

Konrad Kierczyński

doi:10.1117/12.2536660

6 November 2019 Determination of the activation energy of the relaxation time of the composite cellulose: synthetic ester with a high water content

Konrad Kierczyński

Author Affiliations +

Proceedings Volume 11176, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2019; 111764S (2019) https://doi.org/10.1117/12.2536660
Event: Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2019, 2019, Wilga, Poland

Abstract

The paper presents the results of the conductivity testing of Weidmann electrotechnical pressboard, with a moisture content of 5% by weight impregnated with MIDEL 7131 synthetic ester. Frequency and temperature dependencies of AC conductivity were determined on the basis of experimental results. The approximations of the frequency dependencies of conductivity were made with a step of 100 points per decade. The frequency dependencies of approximated conductivity waveforms at all measuring temperatures were shifted by means of the energy of activating the conductivity to a temperature of 293 K (reference temperature in electrical engineering). Arrhenius graphs were also drawn up, from which the energy activation of relaxation time and the value of the R² determination coefficient for the selected conductivities were determined. Approximations of Arrhenius's graphs indicate high accuracy, as evidenced by the values of the coefficient of determination close to one. It has been found that the value of the activation energy of relaxation time varies within a very narrow range, which indicates that in the entire frequency range conduction is carried out according to the same mechanism - hopping conductivity.

Citation Download Citation

Konrad Kierczyński "Determination of the activation energy of the relaxation time of the composite cellulose: synthetic ester with a high water content", Proc. SPIE 11176, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2019, 111764S (6 November 2019); https://doi.org/10.1117/12.2536660

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available