The Effect of Moulding Time on Mechanical and Electrical Properties of Thermoplastic-Elastomer Blends of XLPE and "XL-20"

Different thermoplastic-elastomer blends of XLPE and "XL-20" (Polysar Corporation, Canada) were prepared. It was found that both mechan ical and electrical properties of these blends were influenced with the change in moulding time. Prolonged moulding time degraded the mechanical proper ties of the blend richest in XLPE, whereas it was found to be beneficial for other blends. The moulding time has a somewhat similar effect on the varia tion of dielectric loss and mechanical properties of different blends; thus, the basic mechanism that influences these properties is expected to be the same.