Investigation of Hydrothermally Stressed Silicone Rubber/Silica Micro and Nanocomposite for the Coating High Voltage Insulation Applications

Materials

Nasim Ullah¹  Ahmad Aziz Alahmadi¹  Adam Khan²  Azhar Mahmood³  Faiza³  Abraiz Khattak⁴  Safi Ullah Butt⁴  Kashif Imran⁴  Zuhair Subhani Khan⁵  Asghar Ali⁵  Abasin Ulasyar⁵ 

[1] Department of Electrical Engineering, College of Engineering, Taif University KSA, P.O. Box 11099, Taif 21944, Saudi Arabia;Department of Electronics Engineering, University of Engineering and Technology (UET) Peshawar (Abbottabad Campus), Abbottabad 22010, Pakistan;School of Natural Sciences, National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, Pakistan;U.S.-Pakistan Center for Advanced Studies in Energy, Department of Electrical Power Engineering, National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, Pakistan;U.S.-Pakistan Center for Advanced Studies in Energy, Department of Energy Systems Engineering, National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, Pakistan;

关键词: high voltage;    modern insulation;    aging;    polymer;    nanocomposites;   

DOI  :  10.3390/ma14133567

来源: DOAJ

【 摘 要 】

Silicone rubber is a promising insulating material that has been performing well for different insulating and dielectric applications. However, in outdoor applications, environmental stresses cause structural and surface degradations that diminish its insulating properties. This effect of degradation can be reduced with the addition of a suitable filler to the polymer chains. For the investigation of structural changes and hydrophobicity four different systems were fabricated, including neat silicone rubber, a micro composite (with 15% micro-silica filler), and nanocomposites (with 2.5% and 5% nanosilica filler) by subjecting them to various hydrothermal conditions. In general, remarkable results were obtained by the addition of fillers. However, nanocomposites showed the best resistance against the applied stresses. In comparison to neat silicone rubber, the stability of the structure and hydrophobic behavior was better for micro-silica, which was further enhanced in the case of nanocomposites. The inclusion of 5% nanosilica showed the best results before and after applying aging conditions.

【 授权许可】

Unknown