Abstract
For the quantitative estimation of dielectric loss tangent tanδ in linear and network polymers, the calculation scheme based on the Debye theory is proposed. The calculation is performed for both polar and nonpolar dielectrics in a wide frequency interval ranging from 102 to 106 Hz. This calculation requires knowledge of only the chemical structure of a repeating unit in a linear polymer or a repeating fragment in a polymer network. Experiments on the estimation of frequency dependences of tanδ are conducted for polymer networks based on poly(urethanes) and poly(isocyanurates) of different compositions. A fair correlation between calculation and experimental data is obtained. It has been shown that tanδ tends to change with the increasing content of bulky isocyanurate network junctions that are responsible for the specific behavior of the system under the action of alternating mechanical and electric fields.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
P. Debye, Polar Molecules (Dover, New York, 1945).
A. A. Askadskii and V. I. Kondrashchenko, Computational Materials Science of Polymers (Nauchnyi Mir, Moscow, 1999) [in Russian].
A. A. Askadskii, Computational Materials Science of Polymers (International Science, Cambridge, 2003).
A. A. Askadskii and Yu. I. Matveev, Chemical Structure and Physical Properties of Polymers (Khimiya, Moscow, 1983) [in Russian].
J. Bicerano, Prediction of Polymer Properties (Marcel Dekker, New York, 1995).
Yu. S. Lipatov, A. E. Nesterov, T. M. Gritsenko, and R. A. Veselovskii, Handbook on Polymer Chemistry (Naukova Dumka, Kiev, 1971) [in Russian].
A. A. Askadskii, L. V. Luchkina, K. A. Bychko, et al., Polymer Science, Ser. A 47, 449 (2005) [Vysokomol. Soedin., Ser. A 47, 763 (2005)].
A. A. Askadskii and L. M. Goleneva, Kauch. Rezina, No. 2, 21 (2005).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © A.A. Askadskii, Yu.I. Matveev, G.L. Slabkaya, L.V. Luchkina, O.V. Kovriga, A.I. Ioffe, 2008, published in Vysokomolekulyarnye Soedineniya, Ser. A, 2008, Vol. 50, No. 4, pp. 699–708.
Rights and permissions
About this article
Cite this article
Askadskii, A.A., Matveev, Y.I., Slabkaya, G.L. et al. A calculation scheme for estimation of dielectric loss factors in polymers. Polym. Sci. Ser. A 50, 462–470 (2008). https://doi.org/10.1134/S0965545X08040159
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0965545X08040159