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- W2941927425 abstract "Abstract Electrical insulation is a major security problem in aerospace applications where temperature can reach relatively low values. Epoxy resins are well known as easily formable dielectric materials and can be used to prepare complex insulator parts. In this study, the electrical performance of bisphenol A/epichlorohydrin epoxy resin matrix‐based nanocomposites containing 1, 3, or 6 wt% titanium oxide (TiO 2 ) or aluminium oxide (Al 2 O 3 ) nanofillers are investigated. Composites are characterized with thermogravimetric analysis, scanning electron microscopy‐coupled electron dispersive spectroscopy, and confocal Raman spectroscopy. Furthermore, the role of additives and their ratio on the resistivity performance of the composites are evaluated from 77 to 500 K by applying a direct current voltage from 1 to 20 V. It is observed that the electrical properties of the matrix are directly influencing the insulation performance of the nanocomposite. For example, the abrupt decrease at 370 K of the positive temperature coefficient of the resin for all nanocomposites. It is found that the most resistive composite contains 3 wt% TiO 2 nanoparticles with a value above 3.7.10 10 Ω from 77 to 370 K at 20 V. As a result, this work gives information on to the choice of appropriate insulator materials in extreme working conditions." @default.
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- W2941927425 date "2019-04-25" @default.
- W2941927425 modified "2023-10-14" @default.
- W2941927425 title "The Influence of Al<sub>2</sub>O<sub>3</sub>and TiO<sub>2</sub>Additives on the Electrical Resistivity of Epoxy Resin‐Based Composites at Low Temperature" @default.
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- W2941927425 doi "https://doi.org/10.1002/mame.201800670" @default.
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