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The Tribological Properties of PTFE Composites Reinforced with Different Fillers

Chunxia He

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Abstract

The friction and wear properties of polytetrafluoroethylene(PTFE)composites filled with nano-SiC,MoS2 and graphite particulates sliding against 45# steel under dry friction condition were studied by a MM-200 ring-on-block friction and wear tester.The effect of cooperative of MoS2,graphite and nano-SiC was discussed.Worn surfaces of PTFE composites were observed by a scanning electron microscope(SEM).It was found that nano-SiC as the fillers contributed to improve the friction and wear behavior of PTFE MoS2 and graphite,reduce the friction coefficient.Their carrying capacities and tribological capacity were excellent at high load.PTFE composites with 5% nano-SiC and 3% MoS2 had best tribological capacity.

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What this paper is about

The friction and wear properties of polytetrafluoroethylene(PTFE)composites filled with nano-SiC,MoS2 and graphite particulates sliding against 45# steel under dry friction condition were studied by a MM-200 ring-on-block friction and wear tester.The effect of cooperative of MoS2,graphite and nano-SiC was discussed.Worn surfaces of PTFE composites were observed by a scanning electron microscope(SEM).It was found that nano-SiC as the fillers contributed to improve the friction and wear behavior of PTFE MoS2 and graphite,reduce the friction coefficient.Their carrying capacities and tribological capacity were excellent at high load.PTFE composites with 5% nano-SiC and 3% MoS2 had best tribological capacity.

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Available abstract

The friction and wear properties of polytetrafluoroethylene(PTFE)composites filled with nano-SiC,MoS2 and graphite particulates sliding against 45# steel under dry friction condition were studied by a MM-200 ring-on-block friction and wear tester.The effect of cooperative of MoS2,graphite and nano-SiC was discussed.Worn surfaces of PTFE composites were observed by a scanning electron microscope(SEM).It was found that nano-SiC as the fillers contributed to improve the friction and wear behavior of PTFE MoS2 and graphite,reduce the friction coefficient.Their carrying capacities and tribological capacity were excellent at high load.PTFE composites with 5% nano-SiC and 3% MoS2 had best tribological capacity.

Key concepts: Materials science, Tribology, Composite material, Polytetrafluoroethylene, Graphite, Scanning electron microscope, Dry friction, Friction coefficient

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