Open AccessОсобенности описания импульсной электрической прочности полимерных диэлектриков
Author(s) -
Ю.Э. Адамьян,
С.И. Кривошеев,
С.Г. Магазинов
Publication year - 2021
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2021.05.50679.18621
Subject(s) - dielectric , ionization , electric field , redistribution (election) , space charge , polymer , materials science , pulse (music) , dielectric strength , electric energy , atomic physics , impact ionization , physics , computational physics , ion , optoelectronics , thermodynamics , voltage , quantum mechanics , composite material , electron , power (physics) , politics , political science , law
The scenario based on the macro molecules field ionization model is proposed to describe the polymer dielectrics pulse breakdown. The decisive role of the real dielectric space-field inhomogeneity on formation of the ionization “sources” and redistribution of charge carries is taken into account. The justification of the choice of the defining model parameters - energy gap width and frequency factor is carried out. The possibility of using these parameters to describe the pulse electric strength of polymers in both uniform and sharply non-uniform electric fields (on the example of polymethylmethaacrylate) is shown.