Study of the possibility of creating a tribotechnically effective nanocomposite based on polyetheretherketone with a dispersed filler of low wear resistance

The possibility of using nanosized copper particles as a filler for polyetheretherketone (PEEK) in order to create a tribotechnically effective composite has been investigated. Based on the physical wear model, the calculated concentration dependences of the relative intensity of linear wear of the composite with respect to the matrix have been constructed for four sizes of dispersed filler from the nanoand micro-sized range. As a result, the ranges of effective filler concentrations have been determined when introducing nanocopper into PEEK. The molecular dynamics method has been used to study the causes of increased wear resistance of the nanocomposite when introducing dispersed copper particles. It has been found that in the presence of a nanofiller, the energy of intermolecular bonds increases significantly, differences in the density of polymer molecules in the contact area before and after shear, as well as differences in the energies of intermolecular interaction between the contacting surfaces depending on the shear time have been revealed.

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