Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/638006
Title: Field-dependent conductivity and space charge behavior of silicone rubber/SiC composites
Authors: B. X. Du;Z. L. Li;Z. R. Yang
subject: carrier mobility|nonlinear conductivity|SiC particles|HVDC cable|space charge|HTV silicone rubber|cable accessories
Year: 2016
Publisher: IEEE
Abstract: High temperature vulcanized (HTV) silicone rubber (SiR), due to its excellent electrical insulation, elasticity and temperature resistance, is used in cable accessories for HVDC cables. The space charge, generated under dc stress in SiR, would distort the local electric field, further influencing the characteristics of partial discharge and accelerating the insulation aging. This paper tried to modify the space charge behaviors of HTV SiR composites by incorporating silicon carbide (SiC) particles into the polymer matrix with the filler content of 10, 30, 50, 100 wt%. The effects of the SiC particle content on the field-dependent conductivity and the space charge behaviors of HTV SiR were studied. The conductivities under different electric fields were measured by a three-electrode system at room temperature and the space charge behaviors were observed by the pulsed electro-acoustic (PEA) method. The results indicated that the conductivity of SiR/SiC composites was a nonlinear function of electric field when the content exceeds 30 wt%. With the increase of filler content, the threshold field for nonlinear conductivity decreased and the nonlinear coefficient increased. Meanwhile, the amount of space charges was dramatically reduced. It is suggested that the SiR/SiC composites with nonlinear conductivity can improve the dc conductivity under high electric field, thus raising the carrier mobility and suppressing the accumulation of space charge.
Description: 
URI: http://localhost/handle/Hannan/173385
http://localhost/handle/Hannan/638006
ISSN: 1070-9878
volume: 23
issue: 5
Appears in Collections:2016

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Title: Field-dependent conductivity and space charge behavior of silicone rubber/SiC composites
Authors: B. X. Du;Z. L. Li;Z. R. Yang
subject: carrier mobility|nonlinear conductivity|SiC particles|HVDC cable|space charge|HTV silicone rubber|cable accessories
Year: 2016
Publisher: IEEE
Abstract: High temperature vulcanized (HTV) silicone rubber (SiR), due to its excellent electrical insulation, elasticity and temperature resistance, is used in cable accessories for HVDC cables. The space charge, generated under dc stress in SiR, would distort the local electric field, further influencing the characteristics of partial discharge and accelerating the insulation aging. This paper tried to modify the space charge behaviors of HTV SiR composites by incorporating silicon carbide (SiC) particles into the polymer matrix with the filler content of 10, 30, 50, 100 wt%. The effects of the SiC particle content on the field-dependent conductivity and the space charge behaviors of HTV SiR were studied. The conductivities under different electric fields were measured by a three-electrode system at room temperature and the space charge behaviors were observed by the pulsed electro-acoustic (PEA) method. The results indicated that the conductivity of SiR/SiC composites was a nonlinear function of electric field when the content exceeds 30 wt%. With the increase of filler content, the threshold field for nonlinear conductivity decreased and the nonlinear coefficient increased. Meanwhile, the amount of space charges was dramatically reduced. It is suggested that the SiR/SiC composites with nonlinear conductivity can improve the dc conductivity under high electric field, thus raising the carrier mobility and suppressing the accumulation of space charge.
Description: 
URI: http://localhost/handle/Hannan/173385
http://localhost/handle/Hannan/638006
ISSN: 1070-9878
volume: 23
issue: 5
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7736876.pdf1.66 MBAdobe PDFThumbnail
Preview File
Title: Field-dependent conductivity and space charge behavior of silicone rubber/SiC composites
Authors: B. X. Du;Z. L. Li;Z. R. Yang
subject: carrier mobility|nonlinear conductivity|SiC particles|HVDC cable|space charge|HTV silicone rubber|cable accessories
Year: 2016
Publisher: IEEE
Abstract: High temperature vulcanized (HTV) silicone rubber (SiR), due to its excellent electrical insulation, elasticity and temperature resistance, is used in cable accessories for HVDC cables. The space charge, generated under dc stress in SiR, would distort the local electric field, further influencing the characteristics of partial discharge and accelerating the insulation aging. This paper tried to modify the space charge behaviors of HTV SiR composites by incorporating silicon carbide (SiC) particles into the polymer matrix with the filler content of 10, 30, 50, 100 wt%. The effects of the SiC particle content on the field-dependent conductivity and the space charge behaviors of HTV SiR were studied. The conductivities under different electric fields were measured by a three-electrode system at room temperature and the space charge behaviors were observed by the pulsed electro-acoustic (PEA) method. The results indicated that the conductivity of SiR/SiC composites was a nonlinear function of electric field when the content exceeds 30 wt%. With the increase of filler content, the threshold field for nonlinear conductivity decreased and the nonlinear coefficient increased. Meanwhile, the amount of space charges was dramatically reduced. It is suggested that the SiR/SiC composites with nonlinear conductivity can improve the dc conductivity under high electric field, thus raising the carrier mobility and suppressing the accumulation of space charge.
Description: 
URI: http://localhost/handle/Hannan/173385
http://localhost/handle/Hannan/638006
ISSN: 1070-9878
volume: 23
issue: 5
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7736876.pdf1.66 MBAdobe PDFThumbnail
Preview File