Prediction and analysis of the Tribological Behaviors of hybrid Polymer Composites under reciprocating tribometer

Abstract

This study investigates the tribological behavior of polyether ether ketone (PEEK) composites with polytetrafluoroethylene (PTFE) as a solid lubricant filler under dry reciprocating sliding conditions. Polymer specimens (80% PEEK/20% PTFE and 30% PEEK/70% PTFE) were tested against a steel counterpart using a linear reciprocating tribometer. The Taguchi L4 (2³) orthogonal array was employed to evaluate the effects of load (100 N, 150 N), frequency (1.20 Hz, 2.30 Hz), and temperature (40°C, 80°C) on frictional force, coefficient of friction, and wear rate. Results showed that adding PTFE significantly reduced wear, with the 30% PEEK/70% PTFE composite achieving a minimum coefficient of friction (0.037) and wear rate (0.001 g) at 150 N, 30 Hz, and 40°C. ANOVA revealed load as the dominant factor for friction (61.28% contribution) and temperature for wear rate. Regression models predicted tribological outcomes with 99% accuracy. These findings highlight the potential of PEEK/PTFE composites for high-performance applications like bearings and seals