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Effects of Compression and Silica Addition on the Dielectric Properties of Epoxy Composites

  • Research Article-Electrical Engineering
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Abstract

Composite dielectrics and insulators are emerging as replacement of neat epoxy because of their superior characteristics. However, methods of composite preparation, type and size of filler and stresses such as temperature and mechanical stresses influence these characteristics. In addition, inorganic oxides-based epoxy composites are expected to have good dielectric characteristics. In this work, effect of compression and silica on the dielectric properties of epoxy composites with reference to neat epoxy is explored. Epoxy microcomposite (15% by weight silica loading) and nanocomposites (2.5% and 5% by silica loadings) are prepared, and their dielectric properties are investigated before and after compression at 15 MPa. Overall epoxy nanocomposites with 5% nanosilica performed best having 0.09 dissipation factor and dielectric constant of 6.23. After compressing the samples at 70 °C and 15 MPa, dramatic increase in the dissipation factor of microcomposites was recorded where the average \( \kappa \) increased by a factor of 1.53–8.27 in comparison with 5.40 in the uncompressed form.

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Authors and Affiliations

  1. U.S.-Pakistan Center for Advanced Studies in Energy, National University of Sciences and Technology (NUST), Sector H-12, Islamabad, 44000, Pakistan

    Abraiz Khattak, Kashif Imran, Asghar Ali, Zuhair Subhani Khan & Abasin Ulasyar

  2. Department of Electrical Engineering, Ghulam Ishaq Khan Institute (GIKI) of Engineering Sciences and Technology, Topi, Pakistan

    Muhammad Amin

  3. Informetrics Research Group, Ton Duc Thang University, Ho Chi Minh City, Vietnam

    Adam Khan

  4. Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam

    Adam Khan

  5. Department of Electrical Engineering, College of Electrical and Mechanical Engineering (CEME), National University of Sciences and Technology (NUST), Rawalpindi, Pakistan

    Azhar Ul Haq

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  1. Abraiz Khattak
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Correspondence to Adam Khan.

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Khattak, A., Imran, K., Ali, A. et al. Effects of Compression and Silica Addition on the Dielectric Properties of Epoxy Composites. Arab J Sci Eng 45, 6741–6750 (2020). https://doi.org/10.1007/s13369-020-04686-1

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  • DOI: https://doi.org/10.1007/s13369-020-04686-1

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