A mechanism of pulse breakdown evolution in polymeric films

We present the results of an experimental study pulse electrical strength polyethylene terephthalate and polypropylene films when they are subjected to a single electric pulse. It has been found that breakdown these is possible both at front plateau pulse, probability increases with amplitude. recorded jump in durability transition from plateau. shown processes prepare film develop faster pulsefront than discuss physical mechanism explain this effect. Keywords: polymers, polypropylene, terephthalate, pulsed breakdown, electroluminescence.