Publication detail

Electrical characteristics of different concentration of silica nanoparticles embedded in epoxy resin

AL SOUD, A. DARADKEH, S. KNÁPEK, A. HOLCMAN, V. SOBOLA, D.

Original Title

Electrical characteristics of different concentration of silica nanoparticles embedded in epoxy resin

Type

journal article in Web of Science

Language

English

Original Abstract

In this study, modified epoxy nanocomposite was produced by incorporating SiO2 nanoparticles of 15–30 nm in size, with different concentrations ranging from 1 to 20 wt%. The electrical properties of the epoxy nanocomposite were measured at room temperature in the frequency range of 10−2–107 Hz. To determine the impact of nanoparticles on the epoxy composition, scanning electron microscopy-energy dispersive x-ray spectroscopy (SEM-EDS), Fourier transform infrared spectra (FTIR) spectroscopy, and Raman spectroscopy were conducted. With an increase in filler (SiO2 nanoparticles) content, the electrical characteristics of the epoxy nanocomposite exhibited multiple changes. At low concentrations, all electrical properties experienced a notable increase. The epoxy with 15 wt% of SiO2 nanoparticles samples had a lower permittivity, loss number, conductivity, and capacitance than the unfilled epoxy. At medium concentrations (5 to 15 wt%), the formation of immobilized nanolayers has an impact on permittivity, loss number, conductivity, and capacitance, which have decreased; impedance and modulus increased. The initiation of contact between the nanofillers at a concentration of 20 wt% leads to the formation of continuous interfacial conductive pathways, resulting in a dramatic increase in the permittivity, conductivity, and capacitance of the composites, while concurrently reducing impedance.

Keywords

Epoxy resin, dielectric spectroscopye, poxy nanocomposite, and polymer

Authors

AL SOUD, A.; DARADKEH, S.; KNÁPEK, A.; HOLCMAN, V.; SOBOLA, D.

Released

1. 12. 2023

Publisher

IOP Publishing

Location

England

ISBN

1402-4896

Periodical

PHYSICA SCRIPTA

Year of study

98

Number

1

State

Kingdom of Sweden

Pages from

1

Pages to

14

Pages count

14

URL

https://iopscience.iop.org/article/10.1088/1402-4896/ad070c

Full text in the Digital Library

http://hdl.handle.net/11012/244176

BibTex

@article{BUT185093,
  author="Ammar {AL Soud} and Samer {Daradkeh} and Alexandr {Knápek} and Vladimír {Holcman} and Dinara {Sobola}",
  title="Electrical characteristics of different concentration of silica nanoparticles embedded in epoxy resin",
  journal="PHYSICA SCRIPTA",
  year="2023",
  volume="98",
  number="1",
  pages="1--14",
  doi="10.1088/1402-4896/ad070c",
  issn="1402-4896",
  url="https://iopscience.iop.org/article/10.1088/1402-4896/ad070c"
}