中国塑料2026，Vol.40Issue(3)：35-41,7.DOI:10.19491/j.issn.1001-9278.2026.03.007
高压电缆用半导电屏蔽料导电网络结构与性能关系研究
Effect of conductive network structure on performance of semi-conductive shielding materials for high-voltage cables
摘要
Abstract
Ethylene-butyl acrylate copolymer(EBA)was employed as the matrix resin,and a highly conductive carbon black(CB)was used as the conductive filler to fabricate semi-conductive shielding materials via melt blending,with CB loadings varied from 18 wt%to 34 wt%.The results show that increasing CB content significantly reduces the volume resistivity,weakens the positive temperature coefficient(PTC)effect,and enhances the thermal stability of electrical properties.At a CB loading of 34 wt%,the shielding material presents a room-temperature volume resistivity of 11.4 Ω·cm along with a PTC of 11.7.The tensile strength exhibits a non-monotonic trend,initially increasing and then decreasing with higher CB content,while the elongation at break consistently declines.Dynamic mechanical analysis re-veals that the percolated CB network strengthens interfacial interactions within the composite,thereby increasing both the storage modulus and loss modulus,while simultaneously restricting segmental mobility and chain slippage of the EBA matrix.Rheological measurements further confirm that all formulations display typical shear-thinning behavior,with the storage modulus,loss modulus,and complex viscosity progressively rising as CB content increases,indicative of a well-developed conductive filler network.关键词
高压电缆/半导电屏蔽料/导电炭黑/团簇网络/流变性能Key words
high-voltage cable/semi-conductive shielding material/conductive carbon black/cluster network/rheological property分类
化学化工引用本文复制引用
何文,侯帅,陈小琼,展云鹏,黎灼佳,洪浚轩,杨巧源..高压电缆用半导电屏蔽料导电网络结构与性能关系研究[J].中国塑料,2026,40(3):35-41,7.基金项目
南方电网公司科技项目[031900KK52210018(GDKJXM20210085)] （GDKJXM20210085）
