Influence of gamma irradiation on the characteristic and dielectric properties of XLPE / Nano-silica composite

  • Authors

    • El-Sayed Soliman A. Said Egyptian Nuclear & Radiological-Regulatory Authority (ENRRA).
    • Eltohamy. R. Elsharkawy
    • El Saeed Abdul El-Aziz Othman
    • Mohamed Redaezz-Eldin
    • Walaaabd-Elmonem El-Kattan
    2019-06-30
    https://doi.org/10.14419/ijet.v7i4.29265
  • Cable Insulation, Electrical and Mechanical Properties, Gamma Irradiation, Sio2 Nanofillers.

  • This paper investigates silica nanomaterial-based on cross-linked polyethylene (XLPE) for enhancing the electrical and mechanical properties in the insulation of power cables. The electrical cable insulation properties have been improved by adding a certain amount of spherical nanoparticles of fumed silica in a matrix of the polymer. Also, this paper has studied the impact of aging on XLPE and XLPE/SiO2 cable electrical parameters. The morphology of composite XLPE/SiO2 nanocomposites was characterized by scanning electron microscopy and the accelerated aging experiment was performed by 60Co gamma-ray source. It found that XLPE/SiO2 nanocomposites had better dielectric and mechanical properties; XLPE with 1 % Nano silica was found the optimal loading fraction where the breakdown voltage of the Nano silica samples is greater than that of the XLPE sample during low-dose gamma irradiation, while the breakdown voltage of both is reduced at high doses of radiation. Furthermore, electrical capacitance and dielectric constant were decreased by about 54% and 52%, respectively, over the unfilled XLPE at 50 KGy compared to XLPE/SiO2 at optimal loading fraction. Although the tensile strength for 1% XLPE/SiO2 decrease with increasing the radiation dose the elongation increase and give more elasticity and stability in the mechanical properties.

     

     


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  • How to Cite

    Soliman A. Said, E.-S., R. Elsharkawy, E., Abdul El-Aziz Othman, E. S., Redaezz-Eldin, M., & El-Kattan, W.-E. (2019). Influence of gamma irradiation on the characteristic and dielectric properties of XLPE / Nano-silica composite. International Journal of Engineering & Technology, 7(4), 6585-6590. https://doi.org/10.14419/ijet.v7i4.29265