Title :
Dielectric properties of polyetheretherketone irradiated with electron beam in helium gas
Author :
Shinyama, K. ; Fujita, S.
Author_Institution :
Dept. of Electr. & Electron. Eng., Hachinohe Inst. of Technol., Japan
Abstract :
After a high dose electron beam was irradiated to polyetheretherketone (PEEK) in helium (He) gas, the temperature dependence of the relative permittivity and the relative dielectric loss factor were measured. Glass transition temperature (Tg) values were calculated from graphs depicting the relationship between logarithmic values of τ(Tm) data and Tm values through use of the WLF equation. These results were compared with those of specimens irradiated in the air and the relationship between the atmosphere of the irradiation and electrical properties was investigated
Keywords :
dielectric losses; electron beam effects; glass transition; permittivity; polymers; He; WLF equation; dielectric loss; dielectric properties; electron beam irradiation; glass transition temperature; helium gas; permittivity; polyetheretherketone; temperature dependence; Dielectric loss measurement; Dielectric losses; Dielectric measurements; Electron beams; Glass; Helium; Loss measurement; Permittivity measurement; Temperature dependence; Temperature measurement;
Conference_Titel :
Electrical Insulating Materials, 2001. (ISEIM 2001). Proceedings of 2001 International Symposium on
Conference_Location :
Himeji
Print_ISBN :
4-88686-053-2
DOI :
10.1109/ISEIM.2001.973602
