摘要
以纳米碳化硅为填充剂,通过填充改性的方法制备了纳米碳化硅改性的聚四氟乙烯复合材料。通过扫描电镜观察复合材料的微观结构,以了解纳米碳化硅颗粒的粒度分布。测试复合材料的介电性能和体积电导率,结果表明,加入纳米碳化硅改性后,复合材料的介电常数、介质损耗因数、体积电导率随着改性剂添加量的增加而上升。分析复合材料的性能随改性剂添加量的变化规律。在此基础上,探讨纳米SiC改性聚四氟乙烯的机理。
Polytetrafluoroethylene(PTFE)composite modified by nano-silicon carbide was prepared by cold pressing and sintering method.The microstructure of the composite material was observed by Scanning Electron Microscope(SEM)to acknowledge the distribution of nanoparticles.The dielectric characteristics and volume conductivity of the composites were tested.The results show that the dielectric constant,dielectric dissipation factor,and volume conductivity of the composite material increase with the addition of modifier.The relationship between the characteristics of the composites and the mass fraction of the modifier was analyzed under the experimental results.Based on the work above-mentioned,the mechanism of nano-SiC modified PTFE was discussed.
作者
南江
刘诚威
夏平安
Nan Jiang;Liu Chengwei;Xia Pingan(Xi’an Thermal Power Research Institute Co.Ltd,Xi’an 710054 China;Huaneng Longkaikou Hydropower Co.Ltd,Dali 671505 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2021年第S01期1-7,共7页
Transactions of China Electrotechnical Society
关键词
聚四氟乙烯
碳化硅
复合材料
介电常数
介质损耗因数
体积电导率
Polytetrafluoroethylene(PTFE)
SiC
composite
dielectric constant
dielectric dissipation factor
volume conductivity
