Effect of Polypropylene Modification by Impregnation with Oil on Its Wear and Friction Coefficient at Variable Load and Various Friction Rates

Figure 4

Relationship between sliding distance, load, and friction torque of the samples under various sliding velocities, 0.13, 0.26, 0.44, and 0.62 m⋅s⁻¹, for (a) PTFE, (b) PA 6.6, (c) PA MoS₂, (d) unmodified PP, (e) PP impregnated with RME, (f) PP impregnated with engine oil, and (g) PP impregnated with gear oil.

(a)

(b)

(c)

(d)

(e)

(f)

(g)