BNNS Encapsulated TiO<sub>2</sub> Nanofillers Endow Polypropylene Cable Insulation with Enhanced Dielectric Performance

Li, Zhonglei; Fan, Mingsheng; Zhou, Shuofan; Du, B. X.

doi:10.1109/tdei.2021.009574

Cited by 39 publications

(8 citation statements)

References 22 publications

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“…Figure 9 illustrates the density of deep and shallow trap centres for all the samples. The density of deep traps is much higher than that of shallow traps in PP-based samples, which is in agreement with the previous studies [17,18]. Concerning deep traps, the trap density in PB20 and PO20 increases with the addition of BN nanoparticles.…”

Section: Trap Distributionsupporting

confidence: 92%

Study on thermal cycling ageing resistance of performances of polypropylene/elastomer/boron nitride nanocomposites for high voltage direct current cable insulation

Li,

Gao,

Song

et al. 2024

High Voltage

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The influences of thermal cycling ageing on structures and insulation performances of polypropylene (PP)/elastomer/boron nitride (BN) nanocomposites are investigated. The Melt blending method was used to prepare the nanocomposites, in which propylene‐based elastomer (PBE) or ethylene‐octene copolymer elastomer (EOC) was contained for comparison. Then, the samples were treated using a thermal cycling process with a temperature range from −30 to 150°C, and the number of thermal cycles was set from 0 to 15. Scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry and X‐ray diffraction measurements were taken to facilitate the comprehension of structural changes. Additionally, measurements were taken to assess the trap distribution and direct current (DC) breakdown strength of the samples. The obtained results revealed that following thermal cycling ageing, the morphology and crystallinity of PP/PBE/BN remained almost unchanged. In contrast, PP/EOC/BN exhibited substantial microstructural damage accompanied by a significant reduction in crystallinity. As the number of thermal cycles increased, the trap level and DC breakdown strength of PP/PBE/BN were maintained at high levels, while those of PP/EOC/BN initially remained stable but then experienced a sharp decline. It is suggested that the addition of BN nanoparticles enhances the thermal cycling ageing resistance of the PP/PBE blend, whereas it weakens this resistance of the PP/EOC blend.

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Section: Trap Distributionsupporting

confidence: 92%

Study on thermal cycling ageing resistance of performances of polypropylene/elastomer/boron nitride nanocomposites for high voltage direct current cable insulation

Li,

Gao,

Song

et al. 2024

High Voltage

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“…[ 15 ] As for Du's work of PP/TiO 2 composites mentioned above, they modified the nanofillers with core‐shell structure of TiO 2 @BNNS, which further improved the BDS and reduced the conductivity both compared with neat PP and PP/TiO 2 . [ 13 ] Analogous results were also showed in PP/MgO with maleic anhydride‐grafted PP (PP‐g‐MAH) functionalized on particle surface due to the introduction of deep traps. [ 16 ]…”

Section: Introductionmentioning

confidence: 71%

“…For instance, in Du's research the BDS of PP/TiO 2 composite was improved under 90°C comparing to neat PP, but the conductivity also increased at the same time. [ 13 ] Similarly, in J. W. P. Hsu's work of PP/TiO 2 , the dielectric constant was about 5 with the doping content of 15 vol%, while the large gap between dielectric parameters made the tan δ over 1%. [ 14 ] Consequently, the core‐shell structure of nanoparticles became popular since it could build a dielectric buffer layer as well as modify the trap properties, and thus contribute to dielectric performances.…”

Section: Introductionmentioning

confidence: 99%

Enhanced breakdown strength and restrained dielectric loss of polypropylene/maleic anhydride grafted polypropylene/core‐shell ZrO₂@SiO₂ nanocomposites

et al. 2022

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To simoutinusly achieve improved breakdown strength (BDS) and suppressed dielectric loss, a modified ternary nanocomposite composed of polypropylene (PP), maleic anhydride‐grafted PP and core‐shell structure SiO2@ZrO2 nanoparticles is proposed. By tailoring the thickness of SiO2 shell from 3 to 11 nm and the nanofillers content from 0.5 to 5 wt%, the particles disparsion is improved and meanwhile both the deep trap density and the interaction force between molecules are enhanced. In consequence, the restricted transportation of electrons along molecule chains as well as between chains together raise the DC BDS, that the BDS of optimum sample film reaches 430.8 kV/mm, 23% higher than neat PP. Besides, the ternary nanocomposites with SiO2@ZrO2 less than 3 wt% maintain the tanδ below 0.3% at a broad frequency ranging from 0.1 Hz to 100 kHz, which is an extremely low level same as neat PP.

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“…However, the optimisation on tensile properties of PP by co-ZnO is not as significant as that by flower-MgO particles. Li et al encapsulated nano-TiO 2 into boron nitride nanosheets (BNNS) to fabricate core-shell structured TiO 2 @BNNS nanofillers [128]. A low temperature-dependent conductivity, low electric field distortion rate and high breakdown strength are found on PP/ TiO 2 @BNNS composites, which are obviously better than pure PP.…”

Section: Modification Of Polypropylene Based On Nano-dopingmentioning

confidence: 99%

Eco‐friendly polypropylene power cable insulation: Present status and perspective

Yang

et al. 2023

IET Nanodielectrics

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Environmental protection is the future trend of power equipment development, and is also a research hotspot in the field of power cable insulation in recent years. Due to the excellent electrical properties and recyclability, polypropylene (PP) based composites are regarded as promising insulating materials for eco‐friendly next‐generation power cables. However, the high modulus and hardness of pure PP make it difficult to be directly employed as cable insulations, which needs to be further optimised. General methods of mechanical performance regulation often result in the deterioration of electrical performance, such as breakdown strength, space charge and so on. Therefore, it is recognised that the major challenge impeding practical applications of PP power cable insulation arises from the synergetic regulation of multi‐performances. The multi‐level structures influencing the multi‐performances of PP are introduced by the authors and the researches on the performance enhancement of PP through nanoscale structure regulation in recent years are reviewed in detail. Seven kinds of modification methods including nano‐doping, chemical grafting, in‐suit copolymerisation, heat treatment, nucleating agent, voltage stabiliser and elastomer blending are paid special attention. Based on the full understanding of the research status, the challenges and issues of future research are put forward for eco‐friendly PP power cable insulation.

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BNNS Encapsulated TiO₂ Nanofillers Endow Polypropylene Cable Insulation with Enhanced Dielectric Performance

Cited by 39 publications

References 22 publications

Study on thermal cycling ageing resistance of performances of polypropylene/elastomer/boron nitride nanocomposites for high voltage direct current cable insulation

Study on thermal cycling ageing resistance of performances of polypropylene/elastomer/boron nitride nanocomposites for high voltage direct current cable insulation

Enhanced breakdown strength and restrained dielectric loss of polypropylene/maleic anhydride grafted polypropylene/core‐shell ZrO₂@SiO₂ nanocomposites

Eco‐friendly polypropylene power cable insulation: Present status and perspective

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BNNS Encapsulated TiO2 Nanofillers Endow Polypropylene Cable Insulation with Enhanced Dielectric Performance

Cited by 39 publications

References 22 publications

Study on thermal cycling ageing resistance of performances of polypropylene/elastomer/boron nitride nanocomposites for high voltage direct current cable insulation

Study on thermal cycling ageing resistance of performances of polypropylene/elastomer/boron nitride nanocomposites for high voltage direct current cable insulation

Enhanced breakdown strength and restrained dielectric loss of polypropylene/maleic anhydride grafted polypropylene/core‐shell ZrO2@SiO2 nanocomposites

Eco‐friendly polypropylene power cable insulation: Present status and perspective

Contact Info

Product

Resources

About

BNNS Encapsulated TiO₂ Nanofillers Endow Polypropylene Cable Insulation with Enhanced Dielectric Performance

Enhanced breakdown strength and restrained dielectric loss of polypropylene/maleic anhydride grafted polypropylene/core‐shell ZrO₂@SiO₂ nanocomposites