广东电力2026，Vol.39Issue(1)：88-95,8.DOI:10.3969/j.issn.1007-290X.2026.01.009
新型无副产物聚乙烯基电缆绝缘材料结构与性能
Structure and Performance of New Type Byproduct Free Polyethylene Copolymer Cable Insulation Material
摘要
Abstract
Current primary cable insulation material is peroxide crosslinked polyethylene(XLPE),but the crosslinking process generates byproducts that adversely affect the dielectric properties of the insulation materials.A new type byproduct-free polyethylene copolymer cable insulation material,which forms crosslinked network via click chemistry reaction,shows promise as a future alternative for XLPE cable insulation.However,the influence of the insulation formulation on the structure and performance of this material requires further investigation.In view of this,the byproduct-free crosslinked polyethylene copolymer(XLCP)cable insulation material was prepared using a blend of ethylene-glycidyl methacrylate copolymer(PE-GMA)and ethylene-acrylic acid copolymer(PE-AA).By adjusting the acrylic acid(AA)monomer content in PE-AA,three insulation blend systems were developed.The structures and dielectric properties of these samples were characterized through infrared spectroscopy,differential scanning calorimetry,broadband dielectric spectroscopy,and direct current(DC)breakdown testing.The results demonstrate that as the AA content in PE-AA increases,the mass ratio of PE-AA in the blend decreases,leading to a reduction in carboxyl group content,an increase in crystallinity and melting temperature.Dielectric properties exhibit limited sensitivity to formulation modifications.DC breakdown tests reveal that samples with higher PE-AA content exhibit higher DC breakdown strength at room temperature but lower breakdown strength at 90 ℃,indicating greater temperature sensitivity in their DC breakdown strength.These findings provide theoretical guidance for optimizing the formulation of next-generation cable insulation materials.关键词
高压电缆/无副产物/乙烯基共聚物/结晶结构/介电性能Key words
high voltage cable/byproduct free/polyethylene copolymer/crystalline structure/dielectric property分类
信息技术与安全科学引用本文复制引用
余欣,吴一帆,于是乎,杨心如,彭向阳,王诗航,李盛涛..新型无副产物聚乙烯基电缆绝缘材料结构与性能[J].广东电力,2026,39(1):88-95,8.基金项目
中国南方电网有限责任公司科技项目[GDKJXM20231517(030000KC23120101)] （030000KC23120101）
