Open AccessStudy The Improvement In The Dielectric Strength of (UPR/MgO) Nanocomposites
Author(s) -
Malik J. Zayza,
Najwa J. Jubier,
Subhi A. Al ─Bayaty
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/757/1/012006
Subject(s) - materials science , dielectric , nanocomposite , composite material , dielectric strength , polyester resin , polymer , polyester , mass fraction , unsaturated polyester , molding (decorative) , polymer nanocomposite , matrix (chemical analysis) , optoelectronics
This work focuses on the preparation of polymer matrix nanocomposite materials by hand lay-up molding which was prepared from the unsaturated polyester resin as matrix reinforced by nanoparticles of Magnesium Oxide(MgO) with particle size (54.19 nm) and weight fraction (0,1,3,5,7,10 and 15)%. Dielectric strength for the prepared samples was studied; the results of tests have shown the increase in the dielectric strength with increasing the weight fraction of additive (MgO) and also with the increases in the rate of voltage. The effect of the cycle’s number on the dielectric strength has noticed clearly after the first cycle.The images taken for the electric breakdown points by using optical microscopy has shown the sample coaled in the electric breakdown area as a result of polymeric chains of unsaturated polyester (UPR) destroyed, and there is an appearance of microcracks as a result of electric breakdown extends directly from the point of electric breakdown.