The basic resin composition,molecular chain structure and electrical properties of medium and high voltage semi-conductive shielding cable materials were analyzed by thermogravimetric analyzer,differential scanning calorimeter,nuclear magnetic resonance spectrometer,Fourier transform infrared spectrometer,wire and cable semi conductive rubber resistance tester and melt flow rate analyzer.The results show that although the imported materials and domestic materials contain a lot of carbon black fillers,they still have good processing fluidity,and the volume resistivity is lower at 23℃ and 90℃.
关键词
中高压/半导电屏蔽电缆料/乙烯-丙烯酸酯类共聚物/乙烯-醋酸乙烯酯共聚物/微观结构
Key words
medium and high voltage/semi-conductive shielding cable material/ethylene-acrylate copolymer/ethylene-vinyl acetate copolymer/microstructure