Abstract

Some mechanical and tribotechnical properties of perspective thermoplastic polyetheretherketone matrix (PEEK) based composites loaded with polytetrafluoroethylene (PTFE) and molybdenum disulfide (MoS2) microparticles under dry sliding friction conditions were investigated in order to find efficient combined solid lubricant filler. It is shown that polytetrafluoroethylene is an efficient solid lubricant for PEEK matrix (wear resistance of the composite increases by 8 times for metal–polymer tribo-pair, while it makes 15 times for ceramic–polymer friction pair). Simultaneous adding the molybdenum disulfide and PTFE particles with the content of the latter less than 0.5 wt % ensures maximum wear resistance of the composite while keeping the strength properties at the level of neat PEEK.

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