Title :
Study of charge storage properties in biaxially oriented polypropylene
Author :
Karanja, P. ; Nath, R.
Author_Institution :
Dept. of Phys., Roorkee Univ., India
fDate :
4/1/1993 12:00:00 AM
Abstract :
The charge storage properties of corona-charged biaxially oriented polypropylene (BOPP) and unoriented polypropylene (PP) films have been studied. Thermally stimulated charge decay and open and short circuit thermally stimulated currents, were measured. A half-value charge decay temperature for BOPP was T0.4=118°C, 20°C higher than for PP, hence giving greater charge storage stability for BOPP. The charge storage in BOPP is attributed predominantly to impurity trapping and space charge mechanisms. X-ray and differential scanning calorimetry methods were employed to obtain structural information
Keywords :
X-ray diffraction examination of materials; organic insulating materials; polymer films; space charge; thermal analysis; thermally stimulated currents; 118 degC; X-ray diffraction; biaxially oriented polypropylene; charge storage properties; corona charging; differential scanning calorimetry; half-value charge decay temperature; impurity trapping; open circuit TSC; polypropylene films; short circuit thermally stimulated currents; space charge; thermally stimulated charge decay; Calorimetry; Circuits; Corona; Crystallization; Electrodes; Electrostatic measurements; Filters; Mechanical factors; Polymer films; Temperature distribution;
Journal_Title :
Electrical Insulation, IEEE Transactions on
