Effect of Nanosilica Filled Polyurethane Composite Coating on Polypropylene Substrate
Figure 9
Optical micrographs of the worn surfaces of PP coated with 3 wt% nanosilica filled PU coating under different applied loads (a) 0.1 kg, (b) 0.2 kg, and (c) 0.4 kg (100 rpm, 10 min).
