高压电缆半导电屏蔽料研究进展及关键技术分析

Research Progress and Key Technologies of Semi-conductive Shielding Materials for High-voltage Cables

作为高压电缆重要组成部分,半导电屏蔽层对高压电缆的运行稳定性和使用寿命具有至关重要作用。然而,我国高压电缆半导电屏蔽严重依赖进口,极大程度限制了我国高压电缆自主化生产。基于此,本文介绍了高压电缆半导电屏蔽料国内外发展现状,分析了高压电缆半导电屏蔽料材料组分(基体树脂、导电炭黑和加工助剂)的作用及关键评价指标,重点讨论了高压电缆半导电屏蔽料生产制造存在的技术瓶颈:导电炭黑分散性、电阻率及其稳定性和表面光洁度。最后,对高压电缆半导电屏蔽料的发展方向进行了展望。本文全面系统地综述了高压电缆半导电屏蔽料的研究进展,有望为高压电缆半导电屏蔽料国产化设计与开发提供理论指导。

As an important part of high voltage cable,the performance of semi-conductive shielding layers plays a crucial role in the operation stability and service life of high voltage cable.However,the semi-conductive shielding materials of high voltage cable are completely dependent on import,greatly limiting the independent production of high voltage cable.This paper introduces the development status of high voltage shielding materials and their components.It also points out several key technical problems in the fabrication of semi-conductive shielding materials of high voltage,including the dispersion of conductive carbon black,resistance stability and ultra-smooth surface finish.Finally,the development direction of semi-conductive shielding materials for high voltage cables is prospected.This research is expected to provide theoretical guidance for the domestic development of semi-conductive shielding materials of high voltage cable.