乙烯基非交联电缆屏蔽料性能与分散剂含量关系研究  

Study on the Relationship Between the Properties of Vinyl Non⁃cross Linked Cable Shielding Material and the Content of Dispersant

作　　者：张亚 王晓阳 龚敏 刘晓洁 詹陶 李论之 刘世力 张宏[2] 高景晖 ZHANG Ya;WANG Xiaoyang;GONG Min;LIU Xiaojie;ZHAN Tao;LI Lunzhi;LIU Shili;ZHANG Hong;GAO Jinghui(Chongqing Taishan Cable Co.,Ltd.,Chongqing 401120,China;School of Electrical Engineering,Xi’an Jiaotong University,Xi’an 710049,China;School of Energy and Electrical Engineering,Chang’an University,Xi’an 710064,China)

机构地区：[1]重庆泰山电缆有限公司,重庆401120 [2]西安交通大学电气工程学院,西安710049 [3]长安大学能源与电气工程学院,西安710064

出　　处：《高压电器》2024年第4期33-39,共7页High Voltage Apparatus

摘　　要：非交联绝缘材料具有优异的电气机械性能,同时生产能耗少、可回收利用,成为目前电缆绝缘料的研究热点,但与之匹配的非交联半导电屏蔽料的研究还鲜有报道。导电炭黑的分散性对屏蔽料的性能影响重大。文中选用线性低密度聚乙烯(LLDPE)为基体树脂,白油为分散剂,采用熔融共混法制备了非交联电缆屏蔽料。研究了白油含量对屏蔽料中炭黑分散、结晶性能、体积电阻率和机械性能的影响。结果表明添加白油会促进炭黑的分散,但白油含量过大会降低屏蔽料的结晶度,增加其体积电阻率并降低拉伸强度和断裂伸长率。当白油含量为2 wt%时,屏蔽料体积电阻率最小,力学性能最佳。该研究为非交联半导电屏蔽料在乙烯基非交联电缆的应用研究提供了参考。Non-cross linked insulating materials have become a research hot spot of cable insulating materials due to their such advantages as low energy consumption,recyclability and excellent electrical and mechanical properties.However,little research has been reported on the matching non-cross linked semi-conductive shielding materials.The dispersion of conductive carbon black has a significant impact on the performance of shielding materials.In this paper,non-cross linked cable shields are prepared by melt blending method using linear low density polyethylene(LLDPE)as the base resin and white oil as the dispersant.The effects of white oil content on the dispersion of carbon black,crystallization properties,volume resistivity and mechanical properties of shielding material are studied.The results show that the addition of white oil will promote the dispersion of carbon black,but the excessive content of white oil will reduce the crystallinity of the shielding material,increase its volume resistivity and reduce the tensile strength and breakage elongation.When the white oil content is 2 wt%,the shielding material has the lowest volume resistivity and the best mechanical properties.This study provides a reference for the application research of non-cross linked semi-conductive shielding material in vinyl non-cross-linked cables.

关 键 词：半导电屏蔽料 白油 导电炭黑 非交联聚乙烯 分散剂 线性低密度聚乙烯(LLDPE) 

分 类 号：TM24[一般工业技术—材料科学与工程] TM21[电气工程—电工理论与新技术]