Performance comparison of semi‐conductive shielding layer for high‐voltage cable based on polypropylene and low density polyethylene resin

Lu, Lixin; Liu, Tianyao; Li, Xuejing; Duan, Yubing; Hu, Xiaoli; Wei, Yanhui; Li, Guochang; Hao, Chuncheng

doi:10.1002/app.54510

Cited by 4 publications

(3 citation statements)

References 25 publications

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“…The depolarization space charge curves for material 3 and material 4 have similar trends. The maximum residual charge near the anode and cathode of material 3 is 1.64 C/m 3…”

Section: Depolarization Space Charge Characteristics Of Compositesmentioning

confidence: 98%

“…In composites containing SiO2 particles, the residual amount of space charge for material 2 is the largest. The maximum residual charge near the anode and cathode is 1.95 C/m 3 The residual space charge density of the different samples during depolarization was calculated according to Formula (3) to further analyze the influence of three scale SiO2 The residual space charge density of the different samples during depolarization was calculated according to Formula (3) to further analyze the influence of three scale SiO 2 particles on the space charge accumulation of MMT/LDPE composites [31,32]. The expression of Formula (3) is as follows:…”

Section: Depolarization Space Charge Characteristics Of Compositesmentioning

confidence: 98%

“…The high-voltage direct current (HVDC) cable is the key to flexible direct current (DC) transmission technology, which plays a vital role in long-distance transmission, cross-sea power transmission, and wind power integration [1][2][3][4]. Heretofore, more than twenty HVDC plastic cable transmission projects have been put into operation worldwide, with a total length of more than 3000 km.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of SiO2 Particle Size on Crystallization Behavior and Space Charge Properties for SiO2/MMT/LDPE Composites

Jiang,

Yuan,

et al. 2024

Materials

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The matrix material used in this paper was low-density polyethene (LDPE), and the added particles selected were silicon oxide (SiO2) particles and montmorillonite (MMT) particles. The sizes of the SiO2 particles were 1 µm, 30 nm, and 100 nm, respectively; three kinds of SiO2/MMT/LDPE multi-component composites were prepared based on MMT/LDPE composites doped with MMT particles. The effect of the SiO2 particle size on the crystallization behavior and space charge properties of SiO2/MMT/LDPE composites was studied. The crystalline behaviors and crystallinity of the materials were analyzed. At the same time, the changes in the relative dielectric constant εr and loss factor tanδ for each material with the influence of frequency were studied, and the space charge accumulation, residual characteristics, and apparent charge mobility of each material were explored. The results show that the smaller the size of the added particles, the smaller the grain size and the clearer the grain outline for the multi-composite material. After adding 30 nm SiO2 particles, the crystallinity of the material increases significantly. The microstructure formed by the addition of 100 nm SiO2 particles effectively restricts molecular chain movement and makes it difficult to establish the polarization of the composite. The incorporation of large-size particles can reduce the proportion of the crystalline structure for the material as a whole, resulting in the formation of a new structure to promote charge transfer. Among the three kinds of SiO2 particles, the addition of 30 nm SiO2 particles can effectively suppress the space charge, and the composite material has the lowest residual space charge after depolarization. The addition of 100 nm SiO2 particles can cause the accumulation of many homopolar charges near the anode.

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“…The depolarization space charge curves for material 3 and material 4 have similar trends. The maximum residual charge near the anode and cathode of material 3 is 1.64 C/m 3…”

Section: Depolarization Space Charge Characteristics Of Compositesmentioning

confidence: 98%

Section: Depolarization Space Charge Characteristics Of Compositesmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Effect of SiO2 Particle Size on Crystallization Behavior and Space Charge Properties for SiO2/MMT/LDPE Composites

Jiang,

Yuan,

et al. 2024

Materials

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High Dielectric Thermal Conductivity Polyvinylidene Fluoride Composites Based on Surface‐Modified Graphene Nanosheets and Aluminum Nitride

Zhao,

Wang,

Liu

et al. 2024

Macro Chemistry & Physics

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This article provides reports on the method of surface functionalization modification of graphene nanosheets (GNPs) and aluminum nitride (AlN) through polydopamine and silane coupling agents, respectively. This modification achieves excellent dielectric performance of polyvinylidene fluoride (PVDF) composites by ensuring the uniform dispersion of fillers within the matrix. The synergistic effect between surface‐modified GNPs and AlN is conducive to increasing polar PVDF crystals and promoting interface polarization. The prepared PVDF/GNPs/AlN composites exhibit a dielectric constant as high as 45 with a dielectric loss of only 0.044. Meanwhile, the enhanced interface compatibility of composite materials, to a certain extent, reduces interface thermal resistance and forms an effective thermal conduction network, which enhances the heat dissipation capability of electronic devices and presents potential application in the dielectric energy storage.

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Preparation and performance optimization in high‐voltage cable semiconductive shielding layer for polyolefin composite based on multifractal analysis

Zhang,

Liu

et al. 2023

Polymer Composites

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In this study, the semiconductive shielding composite was prepared successfully using the melt mixing method. The effects of combining multiwall carbon nanotubes (MWCNT) and carbon black (CB) into polyolefin plasticizers/ethylene vinyl acetate/linear low density polyethylene matrix on the mechanical performances, electrical conductivity, and processing rheological properties of the samples were investigated. The research results indicate that adding MWCNT to the prepared semiconductive shielding composite can form a complete conductive network, and its synergistic effect with CB jointly improves the conductivity of the composite material. Compared with the absence of MWCNT, its bulk resistivity decreased from 1.61 W • cm to 0.89 W • cm, a decrease of 44.7%. At the same time, the prepared semiconductive shielding composite has excellent mechanical and processing performances. The elongation at break, maximum tensile strength, and elastic modulus of the composites were increased by 30.9%, 17.9%, and 4.9%, respectively. Based on multifractal analysis, by adjusting the content of MWCNT in composite and optimized processing paths, the distribution and microstructure of MWCNT in composite can be optimized to obtain adjustable mechanical and processing rheological properties. This study presents a guiding approach for designing and developing functional composites requiring adjustable mechanical performances.Highlights The semiconductive shielding composite was prepared successfully. The prepared composite has excellent mechanical and processing performances. Multiwall carbon nanotubes with carbon black can form conductive network. The microstructure can be optimized by quantitative characterization of the morphology.

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Performance comparison of semi‐conductive shielding layer for high‐voltage cable based on polypropylene and low density polyethylene resin

Cited by 4 publications

References 25 publications

The Effect of SiO2 Particle Size on Crystallization Behavior and Space Charge Properties for SiO2/MMT/LDPE Composites

The Effect of SiO2 Particle Size on Crystallization Behavior and Space Charge Properties for SiO2/MMT/LDPE Composites

High Dielectric Thermal Conductivity Polyvinylidene Fluoride Composites Based on Surface‐Modified Graphene Nanosheets and Aluminum Nitride

Preparation and performance optimization in high‐voltage cable semiconductive shielding layer for polyolefin composite based on multifractal analysis

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