Study on Properties of Medium and High Voltage Semi-Conductive Shielding Cable Materials
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℃.
medium and high voltagesemi-conductive shielding cable materialethylene-acrylate copolymerethylene-vinyl acetate copolymermicrostructure