Open AccessЭлектрофизические и механические свойства композита с повышенной диэлектрической проницаемостью на основе сверхвысокомолекулярного полиэтилена, модифицированного углеродными нанотрубками
Author(s) -
I. A. Markevich,
Г.Е. Селютин,
Н. А. Дрокин,
А.Г. Селютин
Publication year - 2020
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/jtf.2020.07.49450.391-19
Subject(s) - materials science , composite material , differential scanning calorimetry , ultimate tensile strength , polymer , composite number , ultra high molecular weight polyethylene , polyethylene , abrasion (mechanical) , elongation , dielectric , carbon nanotube , physics , optoelectronics , thermodynamics
A composite based on ultra-high molecular weight polyethylene (UHMWPE) with 1 wt% of multi-walled carbon nanotubes (MWCNTs) with an increased permittivity (ε = 4.5), low dielectric loss (tgδ = 10-2) in the frequency range from 100 Hz to 100 MHz is obtained and its basic mechanical characteristics is studied. The material has a reduced tensile strength of 22MPa, a high elongation at break of 700% and an abrasion resistance of 37% higher than that of pure UHMWPE. Based on the results of x-ray diffraction and differential scanning calorimetry, it was shown that changes in the mechan-ical properties of the composite are due to changes in the structure of the polymer matrix that occur as a result of exposure high-intensity sonication used in the process of introducing MWNTs into polymer.