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Experimental study of dielectric properties of composite materials pozzolan/DGEBA
Author(s) -
Irekti Amar,
Bezzazi Boudjema,
Smith Agnès,
Aribi Chouaib
Publication year - 2017
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.23589
Subject(s) - materials science , composite material , epoxy , diglycidyl ether , dielectric , scanning electron microscope , dielectric spectroscopy , composite number , pozzolan , bisphenol a , cement , electrode , chemistry , portland cement , optoelectronics , electrochemistry
The subject of composite materials with reinforced filler has been studied recently. This study to improve both the dielectric and structural characteristics of diglycidyl ether of bisphenol a (DGEBA) focused on the appropriate use (from 5% to 60 wt%) of pozzolan filler mechanically grinded to obtain a very fine particle size ( Ø < 10 μm) and area surface of 23.5 m 2 g −1 . The dielectric properties were investigated at great filler concentrations by weight. Epoxy microcomposite samples with a good dispersion of nanoparticles in the epoxy matrix were prepared and experiments were performed to measure the capacitance ( C ), the electrical resistance ( R ), and impedance ( Z ) as a function of frequency (1 kHz–10 kHz). Measurements were made using dielectric spectroscopy over the temperature range 25–80°C. Using the scanning electron microscope (SEM), the morphologies and structure of the surface and fracture surfaces of Pozzolan/DGEBA composites were observed. POLYM. COMPOS., 38:324–331, 2017. © 2015 Society of Plastics Engineers