International Scientific Conference BALTTRIB, 2015

Investigation of the Tribological Properties of Polytetrafluorethylene Modified with Metallic and Nonmetallic Nano Particles

E. Kutelia, D. Gventsadze, J. Padgurskas, L. Gventsadze, O. Tsurtsumia
Republic Center for Structure Research of Georgian Technical University; R. Dvali Institute of Machine Mechanics; Aleksandras Stulginskis University

Abstract

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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DOI: http://dx.doi.org/10.15544/balttrib.2015.26

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