Pressure effect on the space charge in low density polyethylene (LDPE)

The electrical conductivity of LDPE films was studied with temperature (30 degrees C to 75 degrees C), electrical field (6.3 to 22.5 MV/m), and pressure (1 to 850 bar). An anomalous discharge current was observed in the transient state after the application of a DC field, for example, above 15.3 Mv/m for 55 degrees C. The anomalous current, depending on these parameters, was attributed to the existence of a space charge in the polymer.<
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