Investigation of the Tribological Properties of Polytetrafluorethylene Modified with Metallic and Nonmetallic Nano Particles
Republic Center for Structure Research of Georgian Technical University; R. Dvali Institute of Machine Mechanics; Aleksandras Stulginskis University
The results of investigation of physical-mechanical and tribological properties of polytetrafluorethylene (PTFE), composites filled with small (5-10 wt. %) amounts of nanoceramic and nano metallic powders are presented. BN, B 4 C and Co were used as nanopowder fillers. At compression by 30 MPa pressure they are subjected to 10 mass % filled composites on the base of B 4 C and Co is equal correspondingly to deformation of 3.20 and 2.46 % that 6.5 and 8.5 times exceeds the index of unfilled polymer. Developed composites have 2-4 times better wear-resistance than that of the commercial “Superfluvis” on the base of PTFE.
Keyword(s): elf-lubricating composite materials, friction intensity, polytetrafluorethylene, friction coefficient
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