Title :
The ageing of corona charged polyvinylidenefluoride (PVF2)
Author :
D. K. Das-Gupta;K. Doughty
Author_Institution :
School of Electronic Engineering Science, University College of North Hales, Dean Street, Bangor, Gwynedd, LL57 1UT, G.B.
fDate :
6/1/1978 12:00:00 AM
Abstract :
The effect of ageing due to annealing of corona charged PVF2 films has been studied by observations of (i) changes in the X-ray diffraction patterns and (ii) decay of the piezoelectric strain coefficient d31. Annealing at progressively higher temperatures was observed to produce a gradual depolarization although considerable piezoelectricity was still remanent even at 150°C, The structural morphology of the corona charged PVF2 was not significantly altered by annealing at temperatures up to 150°C.
Keywords :
"Corona","Annealing","X-ray diffraction","Temperature measurement","Polymers","Aging","Films"
Conference_Titel :
Electrical Insulation, 1978 IEEE International Conference on
Print_ISBN :
978-1-5090-3121-4
DOI :
10.1109/EIC.1978.7463565
