Linking traps to dielectric breakdown through charge dynamics for polymer nanocomposites

Li, Shengtao; Min, Daomin; Wang, Weiwang; Chen, George

doi:10.1109/tdei.2016.7736837

Cited by 133 publications

(91 citation statements)

References 49 publications

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“…In consequence, the injection of charges from electrode is suppressed due to the reduction of interfacial electric field, which leads to less density of charge carriers. As a result, the dc BDS is enhanced . We correlated the trap energy and the BDS as shown in Figure , it could be found that the dc BDS was proportional to the deep trap energy, which also met with the theoretic simulation results in our previous study …”

Section: Discussionsupporting

confidence: 83%

“…It has been commonly accepted that the interphase between polymer matrix and nanofillers played the dominant role on the performance of nanocomposite, and many models have been proposed to explain how the interphase region works . According to Li's multiregion model, deep traps most located at bonded region, while shallow traps are more related to the transitional region . In the ternary nanocomposite, the interaction between nanoparticles and polymer matrix became stronger, due to the larger van der Waals force between PP‐ g ‐MAH of higher permittivity and polar nanoparticles.…”

Section: Discussionmentioning

confidence: 99%

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Enhanced energy storage properties of polypropylene/maleic anhydride‐grafted polypropylene/nano‐ZrO₂ ternary system

Cheng

Liu

et al. 2019

J of Applied Polymer Sci

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Extensive research studies have been carried out to enhance the energy storage density of polypropylene (PP) films for power capacitor application to cater to the development of power system. However, most of the research studies failed to balance the energy storage density and dielectric loss which generates heat and threatens the operation of power capacitor. In the present study, we proposed a ternary system composited of PP, maleic anhydride‐grafted PP (PP‐g‐MAH), and nano‐ZrO2 with totally 25 compositions in an orthogonal ingredient system. Direct current (dc) breakdown test and dielectric spectra were measured and showed that the largest enhancement of 30.2% of energy storage density was achieved with both increased dielectric constant and dc breakdown strength (BDS), while the dielectric loss kept the same level of neat PP. This on the one hand was attributed to the orientation polarization, ionic polarization, and deep traps introduced by PP‐g‐MAH and nano‐ZrO2, evidenced by the thermal stimulated depolarization current test results. On the other hand, the results of dynamic mechanical analysis indicated that the compatibility of each phases was largely improved in the ternary system so that a high dc BDS was obtained due to the restricted segmental molecular motion. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48211.

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Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Enhanced energy storage properties of polypropylene/maleic anhydride‐grafted polypropylene/nano‐ZrO₂ ternary system

Cheng

Liu

et al. 2019

J of Applied Polymer Sci

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“…Improved electrical properties in nanocomposites which exhibit large volume resistivity, larger breakdown strength and reduced charge mobility relative to the unfilled polymer, have largely been attributed to the charge trapping capabilities of the nanofiller [67]. When the material is placed between the two metal electrodes, the charge carriers injected from the electrodes are captured by the traps present at the electrode-dielectric interface, which subsequently suppresses any further charge injection from the electrodes to limit the charge carrier movement in the polymer nanocomposite [68]. Therefore, the presence of the hBN platelets could suppress the electrode charge injection to trap the charges near the electrode.…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

Enhanced dielectric properties of polyethylene/hexagonal boron nitride nanocomposites

et al. 2017

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A range of nanocomposites based on a polyethylene polymer and hexagonal boron nitride (hBN) filler have been explored in this study. The dielectric properties of the nanocomposites, which consisted of 2, 5, 10, 20 and 30 wt% of hBN, have been compared to the dielectric properties of the unfilled polyethylene blend. Scanning electron microscopy revealed that the hBN was uniformly distributed in the polyethylene matrix, although large amounts of agglomerates were present in the nanocomposites containing more than 10 wt% of hBN. The incorporation of hBN into polyethylene resulted in a highly disordered morphology in comparison with the unfilled polyethylene, in which this effect was more pronounced with increasing hBN content. This is consistent with the increasing crystallisation temperature as the hBN content increases, as shown by differential scanning calorimetry, where the hBN acted as a highly effective nucleating due to the strong interactions between the polyethylene and the hBN. This strong interaction is again reflected in the thermal decomposition temperature which similarly increases with increasing hBN content. The study demonstrates the remarkable electrical properties of the prepared nanocomposites, where the breakdown strength monotonically increased as a function of hBN content, even with a very high 30 wt% of hBN. The improvement in electrical properties, even at high hBN concentrations, is contradictory to the reported results in the literature and is mainly attributed to the hydrophobic surface of the hBN particles.

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“…Hence, polymeric insulators have a certain level of stress field grading. At a very high level of electrical field stress, impact ionization, current multiplication, electromechanical forces, and energy transfer processes associated with charge detrapping can initiate aging, deterioration or dielectric breakdown in the insulating materials, hence reducing the lifespan of the polymeric insulator . To address these issues, polymeric insulators with improved properties are urgently expected.…”

Section: Introductionmentioning

confidence: 99%

A review of thermoplastic elastomeric nanocomposites for high voltage insulation applications

Ismail

Mariatti

2018

Polymer Engineering & Sci

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Thermoplastic elastomer (TPE) has gained acceptance as third generation of polymeric materials for high voltage (HV) insulators. The interesting features showed by TPEs were found to fulfill some particular requirements for HV insulations, at least for the distribution class applications, especially at light contamination environments. Introduction of nanomaterials which widely reported to give significant improvements in the electrical, mechanical, thermal and other properties of polymer has attracted attention to the synergistic properties of combining the two complementary technologies of thermoplastic elastomers and nanocomposites. In this paper, research works on various types of TPEs having promising performance as HV insulators are thoroughly reviewed. The emergence of nanocomposites in the electrical insulation field and the important properties consideration for HV insulators as well as the processing techniques of TPE nanocomposites are also discussed. Finally, some of the past and recent developments of TPE nanocomposites focusing on the electrical insulation properties are highlighted in this article. POLYM. ENG. SCI., 58:E36–E63, 2018. © 2018 Society of Plastics Engineers

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Linking traps to dielectric breakdown through charge dynamics for polymer nanocomposites

Cited by 133 publications

References 49 publications

Enhanced energy storage properties of polypropylene/maleic anhydride‐grafted polypropylene/nano‐ZrO₂ ternary system

Enhanced energy storage properties of polypropylene/maleic anhydride‐grafted polypropylene/nano‐ZrO₂ ternary system

Enhanced dielectric properties of polyethylene/hexagonal boron nitride nanocomposites

A review of thermoplastic elastomeric nanocomposites for high voltage insulation applications

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Linking traps to dielectric breakdown through charge dynamics for polymer nanocomposites

Cited by 133 publications

References 49 publications

Enhanced energy storage properties of polypropylene/maleic anhydride‐grafted polypropylene/nano‐ZrO2 ternary system

Enhanced energy storage properties of polypropylene/maleic anhydride‐grafted polypropylene/nano‐ZrO2 ternary system

Enhanced dielectric properties of polyethylene/hexagonal boron nitride nanocomposites

A review of thermoplastic elastomeric nanocomposites for high voltage insulation applications

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Product

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Enhanced energy storage properties of polypropylene/maleic anhydride‐grafted polypropylene/nano‐ZrO₂ ternary system

Enhanced energy storage properties of polypropylene/maleic anhydride‐grafted polypropylene/nano‐ZrO₂ ternary system