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W2132781393 abstract "Methods used to reinforce self-lubricating polymers generally also cause a significant increase in coefficient of friction, so that a trade-off must be made between coefficient of friction and wear resistance. Polytetrafluoroethylene (PTFE) composites filled with alumina nanoparticles and graphite were prepared by compression molding. Friction and wear experiments were carried out in a reciprocating sliding tribotester at a reciprocating frequency of 1.0 Hz, contact pressure of 5.0 MPa and relative humidity of (75 3)%. The nanocomposites slid against a 45 carbon steel track. Results showed that PTFE + 15 wt% alumina + 5 wt% graphite composite (D) exhibited a coefficient of steady-state friction lower than PTFE + 15 wt% alumina composite (B), while wear resistance of composite D is higher than composite B, and by about 200 times higher than unfilled PTFE. This behavior originates from the effective lubrication of graphite that possesses an extremely low coefficient of friction under the high humidity condition." @default.
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W2132781393 date "2007-02-01" @default.
W2132781393 modified "2023-09-25" @default.
W2132781393 title "On the Tribological Properties of PTFE Filled with Alumina Nanoparticles and Graphite" @default.
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W2132781393 doi "https://doi.org/10.1177/0731684407072517" @default.
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