Exploiting some obvious advantages of polymeric insulators, their use in high-voltage transmission has increased exponentially to substitute conventional ceramic insulators. In the present study, some potentially promising polymeric materials samples containing nano-sized fillers of boron nitride (BN) and silicon carbide (SiC) were fabricated to assess their anti-aging performance under corona discharge, a phenomenon that cannot be avoided on the insulators of high-voltage lines. The test samples were first subjected to aging by generating AC corona for 72 h using a specially designed electrode system, which ensured exposure of the sample’s surface to a uniform electric field. Thereafter, the diagnosis was performed using a state-of-the-art three-electrode system to determine their relative performance through measurement of surface and volume currents at different voltage and ambient temperatures. Fourier transform infrared (FT-IR) spectroscopy and thermo-gravimetric analysis (TGA) were also deployed for additional assessment. Through the measurement of leakage current and its subsequent analysis, it was revealed that surface damage is more pronounced as compared to volume degradation. Moreover, the results of FT-IR spectroscopy elucidated higher transmittance values of principal peaks in the corona-exposed test samples. The overall assessment showed that BN-doped samples have more resistance to aging as compared to SiC‐filled materials.
MaraabaLAl-SoufiKSsennogaT, et al.Contamination level monitoring techniques for high-voltage insulators: a review. Energies2022; 15(20): 7656.
2.
SchurchRMunozOArdila-ReyJ, et al.Identification of electrical tree aging state in epoxy resin using partial discharge waveforms compared to traditional analysis. Polym2023; 15(11): 2461.
3.
LiCShahsavarianTBaferaniMA, et al.Understanding DC partial discharge: recent progress, challenges, and outlooks. CSEE J Power Energy Syst2021; 8(3): 894–909.
4.
ThangabalanBNeelmaniVasaNJ, et al.Understanding the surface condition of silicone rubber nanocomposite due to corona aging using AFM imaging and LIBS spectroscopy. IEEE Trans Dielectr Electr Insul2022; 29(6): 2089–2100.
5.
SuJ. Reduction of dielectric loss of ethylene propylene diene monomer (EPDM) with high barrier graphene (HBG) modified by heptadecafluoro-decyl-triethoxy silane. J Mater Sci Mater Electron2022; 33(32): 24519–24527.
6.
ZhangGZhangXWangB, et al.Study on the discharge characteristics along the surface of insulating media in the low air pressure and strong airflow environment. AIP Adv2022; 12(6): 065215.
7.
DhivakarJMBabuMSSarathiR, et al.Investigation on the surface condition of gamma irradiated silicone rubber micro-nanocomposites. IEEE Access2023; 11: 3996–4009.
8.
BanerjeeSSainiSPrasad DS. Electrical discharge resistance of polymeric nanocomposites. IET Nanodielectrics2021; 4(4): 210–222.
9.
Manoj DhivakarJSarathiRKornhuberS. Investigation on electrical, thermal, and mechanical properties of silicone rubber ATH nanocomposites. IEEE Access2022; 10: 94040–94050.
10.
MaBGubanskiSMHillborgH. AC and DC corona/ozone-induced ageing of HTV silicone rubber. IEEE Trans Dielectr Electr Insul2021; 18(6): 1984–1994.
11.
ReddyBSPrasadDS. Effect of coldfog on the corona induced degradation of silicone rubber samples. IEEE Trans Dielectr Electr Insul2015; 22(3): 1711–1718.
12.
ReddyBSPrasadDS. Corona degradation of the polymer insulator samples under different fog conditions. IEEE Trans Dielectr Electr Insul2016; 23(1): 359–367.
13.
HakamiMEl-HagAJayaramS. Effects of corona discharges on silicone rubber samples under severe weather conditions. In: IEEE Electr Insul Conf (EIC), Denver, CO, USA, 7–28 June 2021.
14.
BanerjeeSPrasadDS. AC corona degradation of silicone rubber nanocomposites at low air pressure. IEEE Trans Dielectr Electr Insul2022; 29(3): 800–807.
15.
ZhuY. Influence of corona discharge on hydrophobicity of silicone rubber used for outdoor insulation. Polym Test2019; 74: 14–20.
16.
NazirMTPhungBTSahooA, et al.Surface discharge behaviours, dielectric and mechanical properties of EPDM-based nanocomposites containing nano-BN. Appl Nanosci2019; 9(8): 1981–1989.
17.
NazirMTPhungBTYuS, et al.Effects of thermal properties on tracking and erosion resistance of micro-ATH/AlN/BN filled silicone rubber composites. IEEE Trans Dielectr Electr Insul2018; 25(6): 2076–2085.
18.
SahaDAnisimovAGGrovesRM, et al.Epoxy-hBN nanocomposites: a study on space charge behavior and effects upon material. IEEE Trans Dielectr Electr Insul2017; 24(3): 1718–1725.
19.
PhillipsAJChildsDJSchneiderHM. Aging of non-ceramic insulators due to corona from water drops. IEEE Trans Power Deliv1999; 14(3): 1081–1089.
20.
GaoHJiaZMaoY, et al.Effect of hydrophobicity on electric field distribution and discharges along various wetted hydrophobic surfaces. IEEE Trans Dielectr Electr Insul2008; 15(2): 435–443.
21.
DuBXXuHLiuY. Effects of wind condition on hydrophobicity behavior of silicone rubber in corona discharge environment. IEEE Trans Dielectr Electr Insul2016; 23(1): 385–393.
22.
NazirMTPhungBTHoffmanM. Performance of silicone rubber composites with SiO2 micro/nano-filler under AC corona discharge. IEEE Trans Dielectr Electr Insul2016; 23(5): 2804–2815.
23.
NazirMTPhungBYuS, et al.Resistance against AC corona discharge of micro-ATH/nano-Al2O3 co-filled silicone rubber composites. IEEE Trans Dielectr Electr Insul2018; 25(2): 657–667.
24.
WangZLiJZhouY, et al.Investigation of the surface microstructure evolution of silicone rubber during corona discharge via slow positron beam and electrochemical impedance spectroscopy. Plasma Process Polym2019; 16(8): 1900057.
25.
TahirMHArshadAManzoorHU. Influence of corona discharge on the hydrophobic behaviour of nano/micro filler based silicone rubber insulators. Mater Res Express2022; 9(3): 035302.
26.
AlberANasratLIsmailH, et al.Electromechanical characterisation of nano silica filled EPDM-SiR composite for high voltage insulation. Int J Adv Technol Eng Explor2022; 9(96): 1610.
27.
BarbosaRBlancoGEOKasamaAH, et al.Rheological study of EPDM/silicone rubber blends phase inversion and characterization of resultant mechanical and thermal properties. J Appl Polym Sci2021; 138(14): app50140.
28.
EffatiEShokriEJalali AraniA, et al.Study of vulcanization characteristic, mechanical, dynamic mechanical and thermal properties of silicone rubber, EPDM, and their hybrid clay nanocomposites. J Appl Polym Sci2024; 141(27): e55590.
29.
SaleemMZAkbarM. Review of the performance of high-voltage composite insulators. Polymers2022; 14(3): 431.
30.
LiuXAoHLinYet al.Mechanical, dielectric and hydrophobic properties of phenyl silicone rubber and methyl vinyl silicone rubber blend composites. IET Nanodielectr2025; 8(3): 1049–1062.
31.
PrabuRRUsaSUdayakumarK, et al.Electrical insulation characteristics of silicone and EPDM polymeric blends-part I. IEEE Trans Dielectr Electr Insul2007; 14(5): 1207–1213.
32.
NazirMTButtFTPhungBT, et al.Simulation and experimental investigation on carbonized tracking failure of EPDM/BN-based electrical insulation. Polymers2020; 12(3): 582.
33.
CostaNLHiranobeCTCardimHP, et al.A review of EPDM (ethylene propylene diene monomer) rubber-based nanocomposites: properties and progress. Polymers2024; 16(12): 1720.
34.
PrabuRRUsaSUdayakumarK, et al.Theoretical correlations amongst electrical and mechanical characteristics of polymeric housing materials for outdoor insulators. IEEE Trans Dielectr Electr Insul2008; 15(3): 771–782.
35.
AziziSMomenGOuellet-PlamondonC, et al.Performance improvement of EPDM and EPDM/Silicone rubber composites using modified fumed silica, titanium dioxide and graphene additives. Polym Test2020; 84: 106281.
ChenXWangJZhangC, et al.Performance of silicone rubber composites using boron nitride to replace alumina tri‐hydrate. High Volt2021; 6(3): 480–486.
38.
JiangGLiuTLiaoK, et al.Effect of micro-scale and nano-scale boron nitride on thermal property of silicone rubber via experimental and simulation method. Silicon2022; 14: 1969–1978.
39.
NazirMTPhungBTZhangY, et al.Dielectric and thermal properties of micro/nano boron nitride co-filled EPDM composites for high-voltage insulation. Micro & Nano Lett2019; 14(2): 150–153.
40.
KimKJuHKimJ. Vertical particle alignment of boron nitride and silicon carbide binary filler system for thermal conductivity enhancement. Compos Sci Technol2016; 123: 99–105.
41.
DuBXLiZLYangZR. Field-dependent conductivity and space charge behavior of silicone rubber/SiC composites. IEEE Trans Dielectr Electr Insul2016; 23(5): 3108–3116.
42.
SarathiRSahooAChenY, et al.Understanding surface discharge activity with epoxy silicon carbide nanocomposites. Polym Eng Sci2017; 57(12): 1349–1355.
43.
DissadoLAFothergillJC. Electrical degradation and breakdown in polymers. Peregrinus Ltd, 1992.
44.
MontanariGC. Bringing an insulation to failure: the role of space charge. IEEE Trans Dielectr Electr Insul2011; 18(2): 339–364.
45.
SaleemMZAkbarMAlamS. Aging assessment of corona-exposed HTV-SiR/EPDM blends loaded with nanofillers. IEEE Trans Plasma Sci2021; 49(12): 3897–3906.
46.
KhanumKKSharmaAMAldawsariF, et al.Influence of filler-polymer interface on performance of silicone nanocomposites. IEEE Trans Ind Appl2019; 56(1): 686–692.
47.
AlamSSerdyukYVGubanskiSM. Field-dependent electric conductivities of silicone rubbers deduced from measured currents and surface potential decay characteristics. Int J Polym Anal Char2019; 24(1): 54–62.
48.
SaleemMZAkbarMAlamS. Corona-aged performance of nano-filled HTV silicone rubber. Plasma Process Polym2022; 19(11): 2200033.
49.
TanakaTKozakoMFuseN, et al.Proposal of a multicore model for polymer nanocomposite dielectrics. IEEE Trans Dielectr Electr Insul2005; 12(4): 669–681.
50.
LiuPLiLWangL, et al.Effects of 2D boron nitride (BN) nanoplates filler on the thermal, electrical, mechanical and dielectric properties of high temperature vulcanized silicone rubber for composite insulators. J Alloys Compd2019; 774: 396–404.
51.
FrechetteMPredaICastellonJ, et al.Polymer composites with a large nanofiller content: a case study involving epoxy. IEEE Trans Dielectr Electr Insul2014; 21(2): 434–443.
52.
DeepalaxmiRRajiniV. Performance evaluation of electron beam irradiated SIR-EPDM blends. IEEE Trans Dielectr Electr Insul2015; 22(6): 3366–3375.
53.
IcduyguMGAsilturkMYalcinkayaMA, et al.Three-dimensional nano-morphology of carbon nanotube/epoxy filled poly (methyl methacrylate) microcapsules. Materials2019; 12(9): 1387.
