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Mechanical and tribological properties of solid lubricant (PTFE) filled carbon fiber reinforced polycarbonate composites

The objective of this research article is to study the mechanical and tribological properties of polytetrafluoroethylene filled carbon fiber reinforced polycarbonate (SCF/PC/PTFE) composites. The mechanical test include tensile and flexural properties. The fiber length distributions were conducted using acid digestion method, while the tribology test using pin-on-disk configuration. Several composition of PC based matrix with SCF as the reinforcement and PTFE as the dispersed phase were studied. The samples were prepared by mean of single screw extrusion and injection molding processes. The results showed that as CF are added, tensile and flexural strength increases. Whilst the addition of PTFE shows negative impact on both tensile and flexural. its influence on wear rate and coefficient of friction is very promising. The incorporation of CF and PTFE into PC show effective tribology-improving capabilities. The combinative effect of CF and PTFE are shown to be able to further enhance the friction and wear properties of PC matrix.