Polyimides examples of tribological properties

PV (MPa-m/s) Pressure, P (MPa) Velocity, V (m/s) Coefficient of friction Wear rate after 1000b (mm) 

These results relate to a few grades only and cannot be generalized. 

Creep behaviour is good even when the temperature rises. Neat polyimides have medium moduli that involve rather low strains for moderate loading. Consequently, creep moduli are also in a good range at room temperature but they decrease more slowly than the majority of other thermoplastics when the temperature rises. Reinforcement with fibres leads to high moduli and, consequently, high creep moduli. 

The dynamic fatigue can be good for certain grades if care is taken to limit the strains by restricting the stresses to values in keeping with the modulus. 

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