Improvement on Partial Discharge Resistance of Epoxy/Al<sub>2</sub>O<sub>3</sub> Nanocomposites by Irradiation With 7.5 MeV Electron Beam

Gao, Yu; Liu, Fang; Wang, Jilong; Wang, Xiaofang; Du, B. X.

doi:10.1109/access.2018.2800100

Cited by 12 publications

(22 citation statements)

References 28 publications

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“…Several methods such as electron beam irradiation, fluorination and incorporation of inorganic fillers have proved effective in improving corona resistance. Gao et al used a 7.5 MeV electron beam to improve the corona resistance of EP/Al 2 O 3 nanocomposites and found that electron beam irradiation promoted cross-linking reactions in the samples, and therefore, the improved cross-linking structure gives rise to enhanced PD resistance [44]. Li et al and An et al found that fluorination treatment could improve corona ageing and tracking properties [45,46,114].…”

Section: Corona/tracking Resistancementioning

confidence: 99%

Review of interface tailoring techniques and applications to improve insulation performance

et al. 2021

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Interfaces between different materials, for instance, electrode-dielectrics and vacuum/ air/SF 6 -insulators and oilpaper, are universal in high-voltage insulation systems. Targeted tailoring of the interfacial properties, e.g. chemical structures, micro-/nanoscale morphology, the charge injection barrier, trap states, and surface conductivity, is thought to be an effective approach to improve insulation properties such as breakdown and flashover strength, corona/tracking resistance, and wettability. In this article, the authors review recent progress in interface tailoring methods and their application to improve various insulation properties. The potential application scenarios of interface tailoring in different facilities are first summarised, and the desired insulation properties of various applications are highlighted. Interface tailoring methods are classified as physical/ chemical surface modification and surface coating (inorganic, organic and composite), and the features of different techniques are described in detail. The structure-property relationships between interfacial states and various microscopic parameters such as charge injection barrier, trap distribution and surface conductivity are discussed together with the tailoring mechanisms for different insulation properties. Finally, the future development prospects of interface tailoring methods and their applications, e.g. multifunctional coating and stimuli-response smart coating, are presented.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Section: Corona/tracking Resistancementioning

confidence: 99%

Review of interface tailoring techniques and applications to improve insulation performance

et al. 2021

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“…The nanofillers act as a barrier to charge bombardment and light emission, as shown in Figure 2b, and thus rupturing of the molecule chain is restricted. Furthermore, the polymer matrix is segmented by the addition of nanofillers, and activated oxygen atoms or emitted gases from discharges fail to diffuse into the polymer matrix, which decreases the erosion area [54]. Vinod et al [55] investigated the electrical, thermal, and mechanical nature of SiR nanocomposites filled with nano-Al 2 O 3 and found a significant improvement in corona ageing resistance under both DC and AC voltages.…”

Section: Impact Of Nanodielectrics On Partial Discharge Resistancementioning

confidence: 99%

“…A common agreement can be made that the addition of nanofillers/microfillers considerably increases the PD resistance characteristics of polymer nanocomposites compared with those of unfilled ones, provided they are mixed in an appropriate concentration to avoid agglomeration of the nanofiller-microfiller particles. It can be stated that an increase F I G U R E 2 A Scheme of partial discharge erosion on neat epoxy sample [54] F I G U R E 2 B Scheme of the nanofiller effect on the enhancement of partial discharge resistance of epoxy samples [54] in nanofiller content to an optimum amount increases PD resistance, and this can be attributed to strong bonding between the polymer matrix and nanofillers that impedes molecular mobility in the interphases. Another reason for higher resistance against PD activities by nanocomposites can be the difference in permittivity between the polymer matrix and nanofillers, but further research is required to establish this.…”

Section: Impact Of Nanodielectrics On Partial Discharge Resistancementioning

confidence: 99%

Electrical discharge resistance of polymeric nanocomposites

Banerjee

Saini

2021

IET Nanodielectrics

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The trend of choosing insulating materials has changed in the past few decades, and a considerable shift has occurred from conventional ceramic to non-ceramic insulating materials. The addition of inorganic fillers has greatly improved the thermal conductivity, discharge resistance, hydrophobicity recovery, and vandalism-resistance properties of polymeric insulating materials. Since the beginning of the present century, the field of nanomaterial research has gained much attention. Several studies have been conducted to investigate and analyze polymer nanocomposites by adding nanoparticles of varying size and concentration as fillers. The aim is to improve the characteristics and reformation of thermal, electrical, and mechanical properties of existing polymeric insulation materials. However, certain inconsistencies are prevalent with results obtained for polymer nanocomposites. A comprehensive review is presented based on available literature focussing on the advancement from polymeric insulating materials to polymeric nanocomposites and its impact on partial discharge resistance, surface charging, and tracking and erosion resistance. It is observed that the weight percent and dispersion of nano-or micro-sized particles into the base polymer matrix governs the performance of polymer composites. At higher filler loading, resistance to partial discharge and tracking and erosion decreases as a result of the agglomeration of fillers, whereas resistance to surface charge accumulation increases at higher filler loading because the formation of shallow traps increases the charge decay rate. It is suggested that when both micro-and nanofillers are mixed in proper proportion, micro-nano hybrid composites provide better performance than composites filled with only nano-or microfillers.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…32 The damage induced by these processes can be observed as changes to the mechanical, electrical, and structural properties of irradiated polymers. 33…”

Section: Introductionmentioning

confidence: 99%

“…35 Nanofiller interfaces can also absorb heat released by incident ions, diverting it away from the polymer backbone. 33,34,36–39 Visakh et al observed that the addition of Al 2 O 3 nanofillers decreased irradiation damage to epoxy matrices, which suffered depolymerization from thermal energy generated by radiolytic processes. 40…”

Section: Introductionmentioning

confidence: 99%

Fabrication, thermal analysis, and heavy ion irradiation resistance of epoxy matrix nanocomposites loaded with silane-functionalized ceria nanoparticles

Chin

Ringgold

Redline

et al. 2022

Phys. Chem. Chem. Phys.

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Improvement on Partial Discharge Resistance of Epoxy/Al₂O₃ Nanocomposites by Irradiation With 7.5 MeV Electron Beam

Cited by 12 publications

References 28 publications

Review of interface tailoring techniques and applications to improve insulation performance

Review of interface tailoring techniques and applications to improve insulation performance

Electrical discharge resistance of polymeric nanocomposites

Fabrication, thermal analysis, and heavy ion irradiation resistance of epoxy matrix nanocomposites loaded with silane-functionalized ceria nanoparticles

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Improvement on Partial Discharge Resistance of Epoxy/Al2O3 Nanocomposites by Irradiation With 7.5 MeV Electron Beam

Cited by 12 publications

References 28 publications

Review of interface tailoring techniques and applications to improve insulation performance

Review of interface tailoring techniques and applications to improve insulation performance

Electrical discharge resistance of polymeric nanocomposites

Fabrication, thermal analysis, and heavy ion irradiation resistance of epoxy matrix nanocomposites loaded with silane-functionalized ceria nanoparticles

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Product

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Improvement on Partial Discharge Resistance of Epoxy/Al₂O₃ Nanocomposites by Irradiation With 7.5 MeV Electron Beam