Kamalov A. M.1,2, Borisova M. E.1, Vaganov G. V.2, Kraft V. E.1, Nesterova A. S.2, Yudin V. E.2
1Peter the Great Saint-Petersburg Polytechnic University, St. Petersburg, Russia
2NRC «Kurchatov Institute» - PNPI - IMC, St. Petersburg, Russia
Email: spb.kamalov@gmail.com
Electrospun polyimide nonwovens based on the polyamide acid salt of pyromellitic dianhydride (PMDA) and 4,4'-oxydianiline (ODA) with different molar masses were obtained. Their dielectric and electret properties have been studied. It has been established that these materials have a low dielectric constant (ε'=1.55-1.91). Charge relaxation of nonwoven polyimides was studied using the method of thermally stimulated depolarization currents. The activation energies of relaxation processes W=0.81-0.90 eV were calculated using computer simulation. Keywords: polyimide, electrospun, dielectric constant, electret, computer simulation.
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Дата начала обработки статистических данных - 27 января 2016 г.