Electrical Conductivity and Breakdown Characteristics of SiC/LSR Nanocomposites at Different Temperatures

Nan Qiang Shang; Qing Guo Chen; Yan Jun Qin; Ming He Chi; Xin Lao Wei

doi:10.4028/www.scientific.net/AMR.981.814

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 981Electrical Conductivity and Breakdown...

Electrical Conductivity and Breakdown Characteristics of SiC/LSR Nanocomposites at Different Temperatures

Abstract:

In high voltage direct current (HVDC) cable accessories, there is a large difference of conductivity between crosses linked polyethylene (XLPE) and liquid silicone rubber (LSR), especially considering the presence of temperature gradient and the changing of operating temperature. In this paper, nano silicon carbide (SiC) was adopted to prepare five kinds of nanocomposites with filler fractions of 1%, 2%, 3%, 4% and 5%, respectively. The conductivity and DC breakdown strength of SiC/LSR nanocomposites were measured under different temperatures. The results show that the nano SiC doping does not has the great influence on LSR DC breakdown strength, and the nano SiC doping can improve the conductivity of LSR effectively, which can realize the conductivity matching between the LSR and XLPE to homogenize the electric field distribution in cable accessory.

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Periodical:

Advanced Materials Research (Volume 981)

Pages:

814-817

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.981.814

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Online since:

July 2014

Authors:

Nan Qiang Shang*, Qing Guo Chen, Yan Jun Qin, Ming He Chi, Xin Lao Wei

Keywords:

Breakdown Strength, Conductivity, Electrical Field Distribution, SiC/LSR Nanocpmposites, Temperature Gradient

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