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Dielectric and Thermal Properties of Transformer Oil Modified by Semiconductive CdS Quantum Dots

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Abstract

In this paper, modified transformer oil semiconductor quantum dots (QDs) are presented. Cadmium sulfide (CdS) quantum dots of radius 4.5 nm with a hexagonal crystal structure are added to transformer oil to improve its dielectric and thermal properties. CdS QDs modified oil is prepared considering different filler loading levels. Alternating current breakdown voltages of the transformer oil samples before and after the modification are measured based on American Society for Testing and Materials D1816 standard. The relative permittivity and dissipation factor are measured for all samples. Also, thermal properties of the oil samples are experimentally evaluated according to the temperature change measurement considering heating and cooling processes. The results show significant improvements in dielectric and thermal properties of the modified transformer oil, as well as an increase in the breakdown strength by about 81% in comparison to the base transformer oil.

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Authors and Affiliations

  1. High Voltage and Dielectric Materials Laboratory, Electrical Engineering Department, Faculty of Engineering, Menoufia University, Shebin Elkom, 32511, Egypt

    Amr M. Abd-Elhady, Mohamed E. Ibrahim & Mohamed A. Izzularab

  2. Physics and Engineering Mathematics Department, Faculty of Electronic Engineering, Menoufia University, Menouf, 32952, Egypt

    T. A. Taha

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  1. Amr M. Abd-Elhady
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  2. Mohamed E. Ibrahim
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  3. T. A. Taha
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  4. Mohamed A. Izzularab
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Correspondence to T. A. Taha.

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Abd-Elhady, A.M., Ibrahim, M.E., Taha, T.A. et al. Dielectric and Thermal Properties of Transformer Oil Modified by Semiconductive CdS Quantum Dots. J. Electron. Mater. 45, 4755–4761 (2016). https://doi.org/10.1007/s11664-016-4745-5

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  • DOI: https://doi.org/10.1007/s11664-016-4745-5

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