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Dielectric properties of PMMA / KCTO (H) composites for electronics components
Author(s) -
Vikulova Maria,
Tsyganov Alexey,
Bainyashev Alexey,
Artyukhov Denis,
Gorokhovsky Alexander,
Muratov Dmitry,
Gorshkov Nikolay
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.51168
Subject(s) - materials science , composite material , dielectric , dissipation factor , ceramic , dielectric loss , permittivity , percolation threshold , electrical resistivity and conductivity , optoelectronics , engineering , electrical engineering
Polymethyl methacrylate/hollandite‐like copper doped potassium titanate high‐k ceramics composites with different filler content (20–60 vol.%) are prepared by simple method of mixing of the polymer solution and ceramics dispersion followed evaporation of the solvent and hot pressing. The particle morphology and size are estimated by SEM. The composites obtained are studied by XRD, FTIR, and TGA methods. The influence of the additive and the concentration of hollandite‐like copper doped potassium titanate high‐k ceramics on dielectric properties (permittivity, conductivity, dielectric loss tangent) are investigated at frequency range from 10 −1 to 10 6 Hz. It is shown that the increasing of ceramics concentration cause the increasing of main dielectric characteristics, namely permittivity up to 40 and dielectric loss up to 0.13 at 60 vol.% of filler and 0.1 Hz. Conductivity percolation threshold for PMMA/KCTO(H) composites was estimated ( v c = 0.0773 vol. [20.9 wt. %]). Experimental data on permittivity are compared with different theoretical models (Lichtenecker's model and the Effective Medium Theory model).