Effect of nanostructured SiO_(2)on charge capture performance and electrical ageing life of PP nanocomposites  

作　　者：Junguo Gao Liwei Liu Guangwei Zhang Tingtai Lee Uwe Schachtely Hitoshi Kobayashi 

机构地区：[1]Key Laboratory of Engineering Dielectrics and Its Application,Ministry of Education,Harbin University of Science and Technology,Harbin,China [2]State Key Laboratory of Electrical Insulation and Power Equipment,Xi'an Jiaotong University,Xi'an,China [3]Evonik Specialty Chemicals Co.,Ltd.,Shanghai,China [4]Evonik Operations GmbH,Hanau-Wolfgang,Germany [5]Evonik(SEA)Pte Ltd,Singapore,Singapore

出　　处：《High Voltage》2025年第1期186-196,共11页高电压(英文)

基　　金：The National Natural Science Foundation of China,Grant/Award Number:51577045;Postdoctoral Research Startup Fund Project of Heilongjiang Province of China,Grant/Award Number:LBH-Q19106;State Key Laboratory of Electrical Insulation and Power Equipment,Grant/Award Number:EIPE24210。

摘　　要：To guarantee the reliability of high-performance and environmentally friendly novel polypropylene(PP)for use as the primary insulation in cables,an assessment of the electrical ageing life of SiO_(2)/PP composite materials was carried out using a stepstress accelerated ageing test based on the inverse power law.The study involved an analysis of microstructural characteristics and performance testing to investigate the bonding between the SiO_(2)under different surface treatment methods and matrixes.Furthermore,the impact of SiO_(2)on charge capture performance in PP insulation was analysed through polarisation–depolarisation current testing.The results show that silica with long alkane chains and amino groups grafted on the surface has good compatibility with PP insulating layers,which can increase the trap energy level of captured electrons and thus reduce the damage of high-energy electrons to the composites.SiO_(2)increased the life index of the PP insulating layer by 19.95%,which contributed to the improvement of the electrical ageing life of the PP insulating layer.

关 键 词：LIFE PERFORMANCE electrical 

分 类 号：TG1[金属学及工艺—金属学]