Розмiрнi ефекти в електричних властивостях вуглецево-полiпропiленових композитiв

Автор(и)

  • A. S. Tonkoshkur Oles Honchar National University of Dnipropetrovsk, Chair od Radioelectronics
  • A. Yu. Lyashkov Oles Honchar National University of Dnipropetrovsk, Chair od Radioelectronics
  • A. V. Degtyaryov Oles Honchar National University of Dnipropetrovsk, Chair od Radioelectronics

DOI:

https://doi.org/10.15407/ujpe61.11.1008

Ключові слова:

composite, carbon filler, conductivity, dielectric permittivity, interphase layer

Анотація

Наведено температурнi залежностi опору, вольт-ампернi характеристики й дiелектричнi спектри композитiв на основi полiпропiлену й наповнювачiв з мiкро- i нанорозмiрних вуглецевих частинок. Зменшення середнього розмiру частинок провiдникового наповнювача при iнших однакових умовах приводить до зменшення абсолютних значень питомого електричного опору; зсуву позисторної дiлянки вольт-амперної характеристики убiк меншої напруженостi електричного поля й бiльших струмiв i зростання низькочастотної дiелектричної проникностi дослiджених композитiв. Показано, що однiєю з iнтерпретацiй прояву такого “розмiрного” ефекту можуть бути уявлення про збiльшення ефективної об’ємної долi провiдникового наповнювача внаслiдок iснування в полiпропiленовiй матрицi мiжфазного прикордонного шару з вiдмiнними вiд об’ємного полiпропiлену електричними властивостями, у якому можливе перемiщення носiїв заряду. Тобто змiни розмiру частинок вуглецю ведуть до змiн питомої поверхнi та ефективної долi провiдникового наповнювача.

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2019-01-04

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