Electrochemical treeing in XLPE/silica nanocomposites

Hui, L.; Smith, Robert C.; Nelson, J. K.; Schadler, Linda S.

doi:10.1109/ceidp.2009.5377858

Cited by 23 publications

(14 citation statements)

References 11 publications

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“…Over the last years, insulations based on various PE-based nanocomposites were manufactured. For the experimental work, two types of models are mainly used, ( i ) the uniform field models [246,259] and ( ii ) divergent field models [246,260,261]. The electrolyte solutions are commonly prepared with NaCl but also other salts such as AgNO 3 , CuSO 4 , Fe 2 O 3 and so forth, are used; their concentrations being in the range of 0.01 to 10 M [246].…”

Section: Water Treeing In Nanocompositesmentioning

confidence: 99%

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Polyethylene Nanocomposites for Power Cable Insulations

et al. 2018

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This review represents a comprehensive study of nanocomposites for power cables insulations based on thermoplastic polymers such as polyethylene congeners like LDPE, HDPE and XLPE, which is complemented by original results. Particular focus lies on the structure-property relationships of nanocomposites and the materials’ design with the corresponding electrical properties. The critical factors, which contribute to the degradation or improvement of the electrical performance of such cable insulations, are discussed in detail; in particular, properties such as electrical conductivity, relative permittivity, dielectric losses, partial discharges, space charge, electrical and water tree resistance behavior and electric breakdown of such nanocomposites based on thermoplastic polymers are described and referred to the composites’ structures. This review is motivated by the fact that the development of polymer nanocomposites for power cables insulation is based on understanding more closely the aging mechanisms and the behavior of nanocomposites under operating stresses.

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Section: Water Treeing In Nanocompositesmentioning

confidence: 99%

“…Series of research studies were performed on samples based on LDPE and XLPE with different types of inorganic nanofillers [240,260,262,263,264,265]. Huang et al studied the effect of nano-SiO 2 particles on the water trees growth in LDPE [262].…”

Section: Water Treeing In Nanocompositesmentioning

confidence: 99%

Polyethylene Nanocomposites for Power Cable Insulations

et al. 2018

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“…The concentration of by-products depends on the temperature used for crosslinking. Hence, researchers have adopted degassing and annealing processes to remove the by-products [88][89][90][91][92]. Additionally degassing reduces the space charge accumulation [88].…”

Section: Other Dielectric Propertiesmentioning

confidence: 99%

A Review on Nanocomposite Based Electrical Insulations

Paramane¹,

Kumar²

2016

Transactions on Electrical and Electronic Materials

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The potential of nanocomposites have been drawing the intention of the researchers from energy storage to electrical insulation applications. Nanocomposites are known to improve dielectric properties, such as the increase in dielectric breakdown strength, suppressing the partial discharge (PD) as well as space charge, and prolonging the treeing, etc. In this review, different theories have been established to explain the reactions at the interaction zone of polymer matrix and nanofiller; the characterization methods of nanocomposites are also presented. Furthermore, the remarkable findings in the fields of epoxy, cross-linked polyethylene (XLPE), polypropylene and polyvinyl chloride (PVC) nanocomposites are reviewed. In this study, it was observed that there is lack of comparison between results of lab scale specimens and actual field aged cables. Also, non-standardization of the preparation methods and processing parameters lead to changes in the polymer structure and its surface degradation. However, on the positive side, recent attempt of 250 kV XLPE nanocomposite HVDC cables in service may deliver a promising performance in the coming years. Moreover, materials such as self-healing polymer nanocomposites may emerge as substitutes to traditional insulations.

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“…Different types of particles have been used as fillers in the epoxy-based polymer composite. These include silica, carbon nanotubes, oxides of metals, graphene oxide, barium ferrite and clay [6][7][8][9][10][11]. Earlier work revealed that polymer micro-and nanocomposite materials have quite different dielectric behaviour.…”

Section: Introductionmentioning

confidence: 99%

Investigating the mechanical and insulation performance of waste eggshell powder/epoxy polymer for power insulation application

2019

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In an effort towards the optimization of materials for industrial application, composite technology has been identified to provide an effective way to improve the performance of insulating materials used in power system applications. Clay and synthesized metal oxide micro-and nanoparticles have been used as fillers in host polymer materials. In this study, the focus is on the development of composite polymeric insulation using particles from animal shell waste for use in electrical and electronic power systems. Epoxy composite samples were prepared with waste chicken eggshell powder and titanium oxide (TiO 2) nanoparticles, respectively. Mechanical (tensile strength) and dielectric properties were studied, and high-voltage AC was used to evaluate the variation in electrical conductance with percentage composition of the filler particles in the epoxy polymer matrix. This was done by monitoring the leakage current through the epoxy polymer composites under high-voltage stresses in the range of 0.5-5 kV. The two polymer composites' type has comparable loss tangent, but the eggshell powder-filled polymer samples displayed higher dielectric constant and lower electrical conductance at high voltage compared with the TiO 2 nanoparticle-filled polymer composite samples. While the minimum conductance of 2.68 × 10 −9 S was obtained from the epoxy composite sample with 3 wt% eggshell particle loading, epoxy nanocomposite displayed a minimum conductance of 4.06 × 10 −9 S with 2 wt% titanium oxide loading. This is an indication that polymer composite with the eggshell particles may produce polymeric insulation that could be more resistant to leakage current.

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Electrochemical treeing in XLPE/silica nanocomposites

Cited by 23 publications

References 11 publications

Polyethylene Nanocomposites for Power Cable Insulations

Polyethylene Nanocomposites for Power Cable Insulations

A Review on Nanocomposite Based Electrical Insulations

Investigating the mechanical and insulation performance of waste eggshell powder/epoxy polymer for power insulation application

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