Title :
Dielectric spectroscopy of polyethylene with and without carbon black
Author :
Scarpa, P.C.N. ; Das-Gupta, D.K.
Author_Institution :
LAC-COPEL/UFPR, Curitaba, Brazil
Abstract :
The present paper reports initial results of dielectric behaviour of polyethylene filled with and without a certain amount of carbon black, unaged and UV radiated for an extended period of time, in the frequency range 10-5 Hz to 106 Hz. The dielectric behaviour of the LDPE flat samples show the presence of relaxation peaks obeying the fractional power law in addition to a quasi-DC process as the ageing progresses
Keywords :
ageing; carbon; composite insulating materials; dielectric losses; dielectric relaxation; filled polymers; permittivity; polyethylene insulation; radiation chemistry; ultraviolet radiation effects; 1E-5 to 106 Hz; C; HF loss peak; Hamon approximation; LDPE; UV irradiated; ageing; analog equivalent circuits; bond breaking; carbon black filled; complex permittivity; crosslinking; dielectric spectroscopy; fractional power law; polyethylene; quasi-DC process; relaxation peaks; Aging; Conducting materials; Dielectric materials; Dielectric measurements; Dielectrics and electrical insulation; Electrochemical impedance spectroscopy; Frequency measurement; Permittivity measurement; Polyethylene; Polymers;
Conference_Titel :
Electrical Insulation, 1998. Conference Record of the 1998 IEEE International Symposium on
Conference_Location :
Arlington, VA
Print_ISBN :
0-7803-4927-X
DOI :
10.1109/ELINSL.1998.704684
