Effect of micro-nano additives on breakdown, surface tracking and mechanical performance of ethylene propylene diene monomer for high voltage insulation

Nazir, M. Tariq; Phung, B.T.; Li, Shengtao; Akram, Shakeel; Mehmood, Muhammad Ali; Yeoh, Guan Heng; Hussain, Shahid

doi:10.1007/s10854-019-01771-6

Cited by 20 publications

(18 citation statements)

References 31 publications

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“…The breakdown strength at power frequency and voltage endurance time of EP, EPMx and EPMNx-y are shown in Figures 8 and 9. In this paper, two-parameter Weibull distribution had been used to assess the breakdown performance of the epoxy composites according to IEEE 930 standard to assess the breakdown performance of the tested specimens, as treated by many works [38,39]. The relevant parameters of the distribution are the scale parameter representing the dielectric breakdown strength or the voltage endurance time at the cumulative failure probability (62.3%) and the shape parameter representing the level of data dispersion, higher values mean less scattering.…”

Section: Effects Of Micro/nano-bn Co-doping On Breakdown Performance Of Epoxy Compositesmentioning

confidence: 99%

Simultaneously Enhanced Thermal Conductivity and Breakdown Performance of Micro/Nano-BN Co-Doped Epoxy Composites

et al. 2021

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Micro/nano- BN co-doped epoxy composites were prepared and their thermal conductivity, breakdown strength at power frequency and voltage endurance time under high frequency bipolar square wave voltage were investigated. The thermal conductivity and breakdown performance were enhanced simultaneously in the composite with a loading concentration of 20 wt% BN at a micro/nano proportion of 95/5. The breakdown strength of 132 kV/mm at power frequency, the thermal conductivity of 0.81 W∙m−1∙K−1 and voltage endurance time of 166 s were obtained in the composites, which were approximately 28%, 286% and 349% higher than that of pristine epoxy resin. It is proposed that thermal conductive pathways are mainly constructed by micro-BN, leading to improved thermal conductivity and voltage endurance time. A model was introduced to illustrate the enhancement of the breakdown strength. The epoxy composites with high thermal conductivity and excellent breakdown performance could be feasible for insulating materials in high-frequency devices.

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Section: Effects Of Micro/nano-bn Co-doping On Breakdown Performance Of Epoxy Compositesmentioning

confidence: 99%

Simultaneously Enhanced Thermal Conductivity and Breakdown Performance of Micro/Nano-BN Co-Doped Epoxy Composites

et al. 2021

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“…On the other side, EPDM exhibits better resistance to tracking/erosion and is relatively stronger mechanically. However, it has low surface and volume resistivity as compared to SiR [ 21 , 22 ]. Considering the overall performance, polymeric insulators made of SiR were reported to have a relatively superior standing [ 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

Review of the Performance of High-Voltage Composite Insulators

Saleem

Akbar

2022

Polymers

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In the present literature survey, we focused on the performance of polymeric materials encompassing silicone rubber (SiR), ethylene propylene diene monomer (EPDM) and epoxy resins loaded with micro, nano, and micro/nano hybrid fillers. These insulators are termed as composite insulators. The scope of the added fillers/additives was limited to the synthetic inorganic family. Special attention was directed to understanding the effect of fillers on the improvement of the thermal conductivity, dielectric strength, mechanical strength, corona discharge resistance, and tracking and erosion resistance performance of polymeric materials for use as high-voltage transmission line insulators. The survey showed that synthetic inorganic fillers, which include silica (SiO2) and hexagonal boron nitride (h-BN), are potential fillers to improve insulation performance of high-voltage insulators. Furthermore, nano and micro/nano filled composites performed better due to the better interaction between the filler and polymer matrix as compared to their only micro- or nano filled counterparts. Finally, some aspects requiring future work to further exploit fillers are identified and discussed.

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“…Over the last decade, nanodielectric insulating materials have received a lot of attention in the global market [19][20][21][22]. Several published studies proclaim that polymers and their derived nanocomposite insulating materials can enhance the dielectric properties for electrical applications [23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Steady-State Conduction Current Performance for Multilayer Polyimide/SiO2 Films

et al. 2021

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The steady-state electrical conduction current for single and multilayer polyimide (PI) nanocomposite films was observed at the low and high electric field for different temperatures. Experimental data were fitted to conduction models to investigate the dominant conduction mechanism in these films. In most films, space charge limited current (SCLC) and Poole–Frenkel current displayed dominant conduction. At a high electric field, the ohmic conduction was replaced by current–voltage dependency. Higher conduction current was observed for nanocomposite films at a lower temperature, but it declined at a higher temperature. PI nanocomposite multilayer films showed a huge reduction in the conduction current at higher electric fields and temperatures. The conclusions derived in this study would provide the empirical basis and early breakdown phenomenon explanation when performing dielectric strength and partial discharge measurements of PI-based nanocomposite insulation systems of electric motors.

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Effect of micro-nano additives on breakdown, surface tracking and mechanical performance of ethylene propylene diene monomer for high voltage insulation

Cited by 20 publications

References 31 publications

Simultaneously Enhanced Thermal Conductivity and Breakdown Performance of Micro/Nano-BN Co-Doped Epoxy Composites

Simultaneously Enhanced Thermal Conductivity and Breakdown Performance of Micro/Nano-BN Co-Doped Epoxy Composites

Review of the Performance of High-Voltage Composite Insulators

Steady-State Conduction Current Performance for Multilayer Polyimide/SiO2 Films

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