Role of Micro and Nanofillers in Electrical Tree Initiation and Propagation in Cross-Linked Polyethylene Composites

Paramane, Ashish; Kannaiah, Sathish Kumar

doi:10.1007/s42341-018-0040-x

Cited by 11 publications

(9 citation statements)

References 20 publications

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“…Because of the complex breakdown mechanism of dielectric polymers such as electronic breakdown and thermal breakdown, the theoretical E b is usually 10 times higher than experimental values of breakdown strength [120] and the (E b /10) values of typical insulating self-healing materials and conventional dielectric polymers are listed in Table 2 for comparison. [4,31,121,108,109,[122][123][124][125][126][127] For thin film dielectric polymers, stringent dielectric and thermal performance requirements in high-field and hightemperature applications leave limited material options. As shown in Table 2, except for some hydrogen bonding networks, the estimated breakdown strengths of most noncovalent intrinsic self-healing materials are much lower than those of the conventional dielectric polymers.…”

Section: Theoretical Considerations In Designing Self-healing Dielectmentioning

confidence: 99%

Section: Challenges In Developing Self‐healing Dielectric Polymersmentioning

confidence: 99%

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Self‐Healing of Electrical Damage in Polymers

Yang

Dang

et al. 2020

Advanced Science

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Polymers are widely used as dielectric components and electrical insulations in modern electronic devices and power systems in the industrial sector, transportation, and large appliances, among others, where electrical damage of the materials is one of the major factors threatening the reliability and service lifetime. Self‐healing dielectric polymers, an emerging category of materials capable of recovering dielectric and insulating properties after electrical damage, are of promise to address this issue. This paper aims at summarizing the recent progress in the design and synthesis of self‐healing dielectric polymers. The current understanding to the process of electrical degradation and damage in dielectric polymers is first introduced and the critical requirements in the self‐healing of electrical damage are proposed. Then the feasibility of using self‐healing strategies designed for repairing mechanical damage in the healing of electrical damage is evaluated, based on which the challenges and bottleneck issues are pointed out. The emerging self‐healing methods specifically designed for healing electrical damage are highlighted and some useful mechanisms for developing novel self‐healing dielectric polymers are proposed. It is concluded by providing a brief outlook and some potential directions in the future development toward practical applications in electronics and the electric power industry.

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Section: Theoretical Considerations In Designing Self-healing Dielectmentioning

confidence: 99%

Section: Challenges In Developing Self‐healing Dielectric Polymersmentioning

confidence: 99%

Self‐Healing of Electrical Damage in Polymers

Yang

Dang

et al. 2020

Advanced Science

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“…However, less attention has been paid to the electrical treeing phenomenon of XLPE nanocomposites. Previous studies on XLPE have focused on breakdown strength, [9][10][11][12]15,16] space charge, [9,16] and dielectric properties. [16,17] Therefore, in this contribution, the effect of nanofiller loading using aluminum oxide (alumina) and organoclay nanofillers, on the electrical treeing phenomenon characteristics of the XLPE nanocomposites is reported.…”

Section: Introductionmentioning

confidence: 99%

Electrical treeing characteristics of alumina‐, zinc oxide‐, and organoclay‐nanoparticle‐filledXLPEnanocomposites

Hamzah

Jaafar

Ismail

et al. 2022

Polymer Engineering & Sci

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Polymer nanocomposites have been widely exploited in different engineering applications like high-voltage engineering application. This is mainly associated with the ease at which they can be tailored toward specific applications. In the present work, alumina-and organoclay-based nanofillers were separately incorporated in cross-linked polyethylene (XLPE). Different formulations of the XLPE nanocomposites were fabricated with the help of an internal mixer after which they were molded to produce test specimens. The effect of nanofiller variation (0.25 and 0.5 wt% loading) on the electrical treeing phenomenon is reported herein. It was observed that the incorporation of 0.5 wt% alumina significantly enhances the tree inception voltage. In addition, compared to 0.25 wt% alumina-, 0.25 and 0.5 wt% organoclay-filled XLPE nanocomposites, 0.5 wt% alumina was found to lower the length and growth of the electrical tree, as well as the expansion coefficient of the XLPE nanocomposite.

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“…Improvement on electrical tree resistance in the polymer matrix (epoxy resin, polyethylene) containing nanofillers has been reported by few researchers [5,6]. Furthermore, investigation on the electrical tree behavior is extended but limited to LDPE/alumina nanocomposite, XLPE/silica nanocomposite, and unfilled XLPE [7,8,10,11,12]. The effect of other nanofillers on XLPE composite is uncertain and should be investigated.…”

Section: Introductionmentioning

confidence: 99%

Effect of ZnO Nanofiller in the XLPE Matrix on Electrical Tree Characteristics

et al. 2020

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The effect of nanofillers on the electrical tree behavior of polymeric materials, such as epoxy resin and polyethylene, has been investigated. Thus, research on electrical tree behaviour is extended but limited only to pure crosslinked polyethylene (XLPE) cable. Electrical tree properties are yet to be explored under various types of nanofillers in XLPE. In this paper, the electrical tree characteristics of XLPE containing zinc oxide (ZnO) nanofiller was reported. The nanofiller concentrations in XLPE were varied to 0.5, 1.0, and 1.5 wt%. Needle-plane electrodes were employed with 2 mm gap between the electrodes. A digital camera and microscope system were used to observe the structure and growth of electrical tree in XLPE. The tree inception voltage (TIV) of XLPE increased with the addition of ZnO nanofiller. The propagation length of tree growth improved compared with the unfilled XLPE. The TIV for the samples with 0.5, 1.0, and 1.5 wt% ZnO nanofiller improved by 7.69%, 14.65%, and 7.16%, respectively, relative to the unfilled XLPE.

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Role of Micro and Nanofillers in Electrical Tree Initiation and Propagation in Cross-Linked Polyethylene Composites

Cited by 11 publications

References 20 publications

Self‐Healing of Electrical Damage in Polymers

Self‐Healing of Electrical Damage in Polymers

Electrical treeing characteristics of alumina‐, zinc oxide‐, and organoclay‐nanoparticle‐filledXLPEnanocomposites

Effect of ZnO Nanofiller in the XLPE Matrix on Electrical Tree Characteristics

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