PP与XLPE电缆绝缘与附件界面涂敷料相容性研究  

Research on compatibility between PP and XLPE cable insulation and accessory interface coating materials

作　　者：田正兵 王鑫魁 罗赵睿 白晓烨 张浩 吴春磊 梁栋 祝曦 TIAN Zhengbing;WANG Xinkui;LUO Zhaorui;BAI Xiaoye;ZHANG Hao;WU Chunlei;LIANG Dong;ZHU Xi(ZTT Cable Accessories Co.,Ltd.,Nantong 226010,China;College of Electrical Engineering and Control Sciences,Nanjing Tech University,Nanjing 211816,China)

机构地区：[1]江苏中天科技电缆附件有限公司,江苏南通226010 [2]南京工业大学电气工程与控制科学学院,江苏南京211816

出　　处：《绝缘材料》2024年第9期58-68,共11页Insulating Materials

基　　金：中天科技电缆附件有限公司科技项目(2023320120000084)。

摘　　要：在电缆附件中,电缆本体绝缘与附件绝缘界面处会涂敷电缆用绝缘油,以增强电缆附件界面之间的密封性和电气绝缘性能。为了考察电缆本体绝缘与绝缘油的相容性及适用性,本文对PP、XLPE在25、75℃下对3种典型绝缘油(硅油、硅脂、聚异丁烯)的吸附相容性进行研究。结果表明:受分子结构的影响,PP和XLPE对硅油和硅脂的吸附能力有限,而极易吸附聚异丁烯,造成质量的显著增加;PP与硅脂配合具有最佳的性能,可使PP的力学性能与电气强度提升;而XLPE在硅油与硅脂中展现接近的材料性能,其中硅脂浸渍老化后保持较好的力学性能,而硅油浸渍老化后则保持较好的绝缘性能。通过分析发现,适量的吸附一定程度上提高了表面粗糙度并填补了绝缘内部缺陷,提升了材料的绝缘性能。通过研究不同种类的涂敷料在不同温度下对主绝缘材料的影响,得到了绝缘介质与电缆主绝缘的适配性结果,可为规范电缆终端绝缘油的选择、提高电缆终端的运行可靠性提供参考。In cable accessories,the interface between cable body insulation and accessory insulation often coat with insulating oil for cable to enhance the sealing and insulating properties between the interfaces of cable accessories.In order to investigate the compatibility and applicability of cable body insulation and insulating oil,and to provide a reference for the selection of insulating oil for cables,the adsorption compatibility of PP and XLPE on three typical insulating oils(silicone oil,silicone grease,and polyisobutylene) at 25℃ and 75℃ was studied.The results show that affected by the molecular structure,PP and XLPE have limited adsorption capacity on silicone oil and silicone grease,and they can easily adsorb polyisobutylene,resulting in a significant increase of quality.PP coordinating with silicone grease have the best properties,which can improve the mechanical properties and electric strength of PP.XLPE exhibits close properties in silicone oil and silicone grease,among which silicone grease impregnation maintains good mechanical properties,while silicone oil impregnation maintains good insulating properties.Through analysis it is found that appropriate amount of adsorption improves the surface roughness,fills the internal defects of the insulation,and improves the insulating properties of material.By studying the influence of different types of coating materials on the main insulating material at different temperatures,the adaptability results of insulating medium and cable main insulation are obtained,which can provide a reference for standardizing the selection of insulating oils for cable terminals and improving the operating reliability of cable terminals.

关 键 词：电缆绝缘油 浸渍试验 理化性能 电气性能 

分 类 号：TM215[一般工业技术—材料科学与工程] TM247[电气工程—电工理论与新技术]