Tailored sPP/Silica Nanocomposite for Ecofriendly Insulation of Extruded HVDC Cable

Figure 9

Space charge distribution during polarization in (a) sPP, (b) 0.5 phr, (c) 1 phr, and (d) 3 phr subjected to a DC electric field of 60 kV/mm for 1800 s.

(a)

(b)

(c)

(d)