高电压技术2025，Vol.51Issue(6)：2651-2661,11.DOI:10.13336/j.1003-6520.hve.20241148
挤出成型冷却温度对共混改性型聚丙烯绝缘料微观结构与力电性能的影响
Effect of Cooling Temperature During Extrusion on the Microscopic Structure,Mechanical and Electrical Properties of Polypropylene Insulating Materials
摘要
Abstract
Power cables are a key element in the global energy internet and are vital to national security and economic development.Modified polypropylene insulating material with excellent comprehensive performance can act as a new-generation candidate to replace cross-linked polyethylene for the development of green power cables.In this work,the modified polypropylene insulating material via physically blending was used.The control of cooling temperature dur-ing extrusion was utilized to simulate the cooling process of polypropylene cable in the actual extrusion production process.As a result,the effects of cooling temperature on the size and distribution of elastomers,polypropylene crystal-linity as well as mechanical and electrical properties were studied.When the cooling temperature is 80 ℃,the cooling rate is suitable for the formation of crystalline structure and phase morphology in the polypropylene insulation material,thus exhibiting better mechanical toughness and electrical properties,as well as superior overall performance.The work presented here provides an important reference for the processing and preparation of polypropylene insulated cables in the actual extrusion production process.关键词
聚丙烯绝缘/冷却温度/相态结构/晶体结构/力学性能/电气性能Key words
polypropylene insulation/cooling temperatures/phase morphology/crystalline structure/mechanical prop-erties/electrical properties引用本文复制引用
展云鹏,侯帅,曹亚杰,惠宝军,赵林杰,傅明利..挤出成型冷却温度对共混改性型聚丙烯绝缘料微观结构与力电性能的影响[J].高电压技术,2025,51(6):2651-2661,11.基金项目
特高压电力技术与新型电工装备基础国家工程研究中心开放基金项目(NERCUHV-2022-KF-04)Project supported by National Engineering Research Center of UHV Tech-nology and New Electrical Equipment of China(NERCUHV-2022-KF-04). （NERCUHV-2022-KF-04）
