Title :
Dielectric study at microwave frequencies of water-treed crosslinked polyethylene
Author :
Suzuki, T. ; Walrath, K.E. ; Zhan, Ming ; Melcher, J.R.
Author_Institution :
Dept. of Electr. Eng., MIT, Cambridge, MA, USA
fDate :
12/1/1992 12:00:00 AM
Abstract :
The dielectric properties of water-treed crosslinked polyethylene (XLPE) were studied by using a hollow microwave waveguide system between 135 MHz and 13.6 GHz. The dielectric loss of water-treed XLPE is proportional to water content. Water-treed XLPE has a low relaxation frequency, which is probably due to bound water. The binding water in trees was confirmed by the lower apparent water diffusion rate in treed XLPE than in undamaged controls measured with a radioactive tracer method
Keywords :
dielectric losses; dielectric measurement; electric breakdown of solids; microwave measurement; organic insulating materials; polymers; water; 135 MHz to 13.6 GHz; XLPE; binding water; bound water; dielectric loss; dielectric properties; hollow microwave waveguide system; microwave frequencies; relaxation frequency; water content; water-treed crosslinked polyethylene; Dielectric measurements; Hollow waveguides; Microwave frequencies; Microwave measurements; Moisture measurement; Optical films; Optical waveguides; Polyethylene; Testing; Trees - insulation;
Journal_Title :
Electrical Insulation, IEEE Transactions on
