| Tribology is the science and technology of interacting surfaces in relative motionand of related subjects and practices. Demands for the use of new materials haveresulted in the emergence of polymer-based system. An excellent candidate of suchpolymer matrixes is high performance engineering thermoplastic poly (arylene etherketone)s (PAEKs) family which has a characteristic distribution of ether and ketonegroups in the polymer backbone.PEEK, which exhibits a linear, aromatic, semi-crystalline character withoutstanding properties such as excellent mechanical properties, thermal stability, andsuper solvent resistance, is the most used one among PAEKs and widely regarded asone of the best self-lubricating friction materials. To obtain the desired tribologicalproperties, PEEK composites have attracted much attention. Generally, the reductionof friction by using solid lubrications (such as nanoparticles, PTFE, Graphite etc)leads to the deterioration of some mechanical properties and decrease the wearresistance to some extent. The improvement of wear resistance could be achieved byusing reinforcements (like carbon fibers, glass fibers) to enhance the hardness,stiffness and compressive strength.However, the few studies so far reported have found that the tribologicalperformance is strongly connected to the structural properties of matrix polymers.Considering the low molecular weight FPAEKs was unable to meet the processingrequirements and couldn’t be used itself, in the present work, the high molecularweight FP30-PEDEKK copolymer，BP-PEDEKKs copolymers and FH-PEEKKscopolymers were synthesized and the investigation was focused on their tribologicalproperty under dry sliding condition. Mechanical properties and thermal stabilitywhich are closely related to the tribological properties were also investigated. Wornsurface morphologies were presented by using scanning electron microscope (SEM),which is believed to be helpful to understand the tribological mechanism of polymers. |
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