Highly conductive polymer nanocomposites for emerging high voltage power cable shields:experiment,simulation and applications  

作　　者：Xingyi Huang Boyang Sun Chunyang Yu Jiandong Wu Jun Zhang Pingkai Jiang 

机构地区：[1]Shanghai Key Laboratory of Electrical Insulation and Thermal Aging,Shanghai Jiao Tong University,Shanghai 200240,People's Republic of China 2 [2]Department of Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240,People's Republic of China

出　　处：《High Voltage》2020年第4期387-396,共10页高电压（英文）

基　　金：This work was financially supported by National Basic Research Program of China(2014CB239503);National Natural Science Foundation of China(51877132).

摘　　要：High voltage power cables play a critical role in global electricity transmission and distribution.The currently used power cables cannot fulfil the green and sustainable requirement of modern society because of the thermoset nature of cable insulation and shields.This study is aimed at developing thermoplastic shields for high voltage power cable,which is one bottleneck restricting the development of environmental-friendly cables.Using carbon black(CB)as the main conductive component and a small amount of carbon nanotubes(CNTs)or graphene as the second filler,highly conductive polypropylene based composite materials were prepared for potential shield applications.It was found that,at a fixed conductive filler loading,the replacement of a small amount CB by CNTs can significantly enhance the electrical conductivity and suppress its temperature dependence.However,when CB was replaced by graphene,only limited enhancement of electrical conductivity could be achieved and the electrical conductivity is still highly dependent on temperature.Dissipative particle dynamics simulations demonstrated that the enhanced conduction property in the CNTs-containing composites could be understood by the shorter average distance between CB and CNTs.Finally,the coordination between the newly developed conductive composites and the environmental-friendly thermoplastic polypropylene insulation was evaluated via high voltage direct current measurements,and the results revealed that the CNTs-containing composites showed excellent suppression effect on the space charge injection and accumulation in the insulation.This research paved a new way for developing environmental-friendly high voltage power cable shields.

关 键 词：COMPOSITES CONDUCTIVE INSULATION 

分 类 号：TB383[一般工业技术—材料科学与工程] TM24[电气工程—电工理论与新技术]