应用化学2024，Vol.41Issue(11)：1648-1655,8.DOI:10.19894/j.issn.1000-0518.240247
辐照聚乙烯热熔带的性能及在电缆绝缘层修复中的应用
Properties of Irradiated Polyethylene Hot-Melt Tape and Its Application in Cable Insulation Layer Rejuvenation
摘要
Abstract
The damage to the insulation layer of cables directly affects the safety of electricity use,and the research on economical and environmentally friendly rejuvenation materials and methods is of great significance.This work firstly investigates the influence of electron beam(EB)irradiation on the thermal and mechanical properties of polyethylene(PE)tape at different doses in detail.On this basis,a method for repairing the insulation layer of locally damaged cross-linked polyethylene(XLPE)cables is proposed by utilizing the unique hot-melt and thermal-shrinkage characteristics of low-dose irradiated PE materials,and a specific rejuvenation procedure is provided.The research results indicate that low-dose irradiated PE hot-melt tape can effectively repair damaged cable insulation layers,and the repair layer is tightly fused with the original insulation layer.After irradiation at a dose of 40 kGy,the tensile strength is 16.9 MPa,and the elongation at break is 638.5％.The resistance reaches 2.94×1012 Ω,and the volume resistance is 5.89×1014 Ω·m,which meets the requirement of cable applications.The repaired cable withstands the 10 kV AC voltage test at 39 kV/5 min and partial discharge test at 15 kV≤5 PC.It can be seen that low-dose irradiated PE hot-melt tape has important application prospects in the field of cable rejuvenation.关键词
辐照交联/聚乙烯/电缆/修复Key words
Irradiation crosslinking/Polyethylene/Cables/Rejuvenation分类
化学化工引用本文复制引用
李靖威,郑睿鹏,杨明,赵娟,郑帅,李娅珂,戚云霞,徐义全,刘佰军..辐照聚乙烯热熔带的性能及在电缆绝缘层修复中的应用[J].应用化学,2024,41(11):1648-1655,8.基金项目
中科英华-吉林大学产学研开发项目(No.3R2231166412)资助 Supported by the Industry-University Collaborative Development Project of CAIC-Jul(No.3R2231166412) （No.3R2231166412）
