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The effect of ultrasound treatment of expanded graphite (EG) on structure and tribological behavior of PTFE-EG composites filled with 5 mass % of EG is studied. It is found that sonicated EG (EGS) increases the friction coefficient of PTFE composite compared to that of the composite filled with the original EG (EGO). Filling with EG allows to reduce the wear rate of PTFE up to a factor of ≈700 to...
Effect of molybdenum disulfide dispersity and friction test conditions on wear rate of its 1%-filled PTFE-based composites is studied. It is found that under certain test conditions the wear rates of the composites filled with sub micro- or nanosized filler are similar to reported values for the PTFE composites filled with 20mass%–30vol% of microsized MoS 2 . It is attributed to accumulation...
Effect of RF plasma treatment of polyoxadiazole (POD) fibers in the medium of tetrafluoroethylene on structure, mechanical and tribological behavior of PTFE–POD fiber composite is studied. It is found that fiber treatment raises the composite density, heat resistance, mechanical strength and improves its tribological behavior. The tensile strength of the 10%-filled composite increases by more than...
Effect of two grades of carbon black (CB) on structure, strength and tribological behavior of PTFE-CB composites is studied in the filler range of 10mass%. It is found that differences in surface properties of the fillers used to determine the type of supermolecular structure evolved and patterns of variation of mechanical properties, friction and wear in response to increasing filler content.It is...
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