Graphene Enhanced Electrical Properties of Polyethylene Blends for High-Voltage Insulation

Wei, Zuojun; Hou, Yaxin; Jiang, Chen; Liu, Haiyan; Chen, Xiangrong; Zhang, Anyun; Liu, Yingxin

doi:10.1007/s13391-019-00158-3

Cited by 10 publications

(3 citation statements)

References 62 publications

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Section: Introductionmentioning

confidence: 99%

“…In the last decade, many studies have focused on the problem of space charge accumulation in the insulation layer [7][8][9][10]. The representative work is the modification of cable insulation material by nanoparticles [10][11][12][13]. There have been some studies showing that the addition of nanoparticles into the polyethylene matrix can effectively inhibit charge accumulation and improve the breakdown strength of the material [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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Effect of graphene modified semi‐conductive shielding layer on space charge accumulation in insulation layer for high‐voltage direct current cable

Zhang

et al. 2021

High Voltage

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Space charge accumulation in the insulation layer of high-voltage direct current (HVDC) cable is one of the key factors restricting the development of HVDC cable. The inner semi-conductive layer as an important structure of cable will affect the charge accumulation characteristics in the insulation layer. This work intends to explore the method of modifying the semi-conductive layer with graphene, to suppress charge accumulation in the insulation layer. First, the semi-conductive layer with different contents of Graphene (G) and carbon black (CB) are prepared. Second, the morphology and surface roughness of the cross section are analysed. Further, the effects of the semi-conductive layer on space charge accumulation of the insulation layer are studied by pulsed electro-acoustic method and thermal stimulation depolarisation current method. The experimental results show that a moderate amount of graphene replacing CB can effectively reduce charge accumulation in the insulation layer and inhibit positive temperature coefficient (PTC) effect at the same time. The surface roughness of specimens decreases with the increase of G content from 0 to 3 phr (parts per hundreds of resin), when the CB content decreases from 25 to 10 phr, the surface roughness of specimen increases. The resistivity test shows that doping G can significantly inhibit the PTC effect of the semi-conductive layer. The volume resistivity of the semi-conductive layer decreases with the increase of G content and CB content. In addition, charge accumulation of the insulation layer rises and then drops under the action of the semi-conductive layer.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of graphene modified semi‐conductive shielding layer on space charge accumulation in insulation layer for high‐voltage direct current cable

Zhang

et al. 2021

High Voltage

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“…Recently, patterning technology of graphene oxide (GO) that has insulation properties due to oxygen-containing functional groups is attracting attention in the reduction process [21][22][23]. In particular, the reduction process using photon energy has advantages that make it possible to make a flexible film by using a polymer substrate such as polyethylene phthalate (PET), because it has a very short process time and instantaneously generates thermal energy so that it does not cause thermal damage to the substrate [24,25].…”

Section: Introductionmentioning

confidence: 99%

Effect of Pulsed Light Irradiation on Patterning of Reduction Graphene Oxide-Graphene Oxide Interconnects for Power Devices

Choi

Pyo

2021

Coatings

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Reduction graphene oxide (r-GO) lines on graphene oxide (GO) films can be prepared by a photocatalytic reduction and photothermal reduction method. A mechanism of partial GO reduction by pulsed photon energy is identified for preparing patterned rGO-GO films. The photocatalytic reduction method efficiently reduces GO at low photon energies. The successful production of a patterned rGO-GO film without damage by the photo thermal reduction method is possible when an energy density of 6.0 or 6.5 J/m2 per pulse is applied to a thin GO film (thickness: 0.45 μm). The lowest resistance obtained for a photo-reduced rGO line is 0.9 kΩ sq−1. The GO-TiO2 pattern fabricated on the 0.23 μm GO-TiO2 composite sheet through the energy density of each pulse is 5.5 J/m2 for three pulses.

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Delocalized aromatic molecules with matched electron‐donating and electron‐withdrawing groups enhancing insulating performance of polyethylene blends

Wei

Liu

et al. 2020

J of Applied Polymer Sci

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Seven delocalized aromatic molecules with electron‐donating and electron‐withdrawing groups are applied as voltage stabilizers to improve the insulation properties of polyethylene blends. Voltage stabilizers 1 wt% are added into the blends (90 wt% low‐density polyethylene and 10 wt% high density polyethylene) by diffusion loading method. Electrical measurements including electrical treeing, space charge distribution, and direct current conductivity are conducted to disclose their effects. The results show that the co‐existence of matched electron‐donating and electron‐withdrawing groups in the molecules is favorable for the insulation properties. A 50% increase of tree initiation voltage is achieved with the addition of 3‐aminobenzoic acid, which is also able to inhibit the space charge and decrease the conductivity at lower temperature. Besides, the grafting sample of the optimal molecule is successfully prepared and displayed enhanced electrical properties. Finally, the common internal mechanism of the delocalized molecules on different electrical properties is revealed.

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Graphene Enhanced Electrical Properties of Polyethylene Blends for High-Voltage Insulation

Cited by 10 publications

References 62 publications

Effect of graphene modified semi‐conductive shielding layer on space charge accumulation in insulation layer for high‐voltage direct current cable

Effect of graphene modified semi‐conductive shielding layer on space charge accumulation in insulation layer for high‐voltage direct current cable

Effect of Pulsed Light Irradiation on Patterning of Reduction Graphene Oxide-Graphene Oxide Interconnects for Power Devices

Delocalized aromatic molecules with matched electron‐donating and electron‐withdrawing groups enhancing insulating performance of polyethylene blends

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