PTFE compounds show increased wear resistance at high loads

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  • Increased wear resistance compared to standard PTFE formulations
  • Short running-in behavior at start-up
  • Additional benefit: less deposition in tool cavities

Lehvoss North America has introduced Luvocom XTF, a new generation of polymers lubricated with a proprietary PTFE formulation. These compounds exhibit significantly increased wear resistance, especially at high loads, when compared to standard PTFE formulations.

Short running-in behavior at start-up

Unlike traditional PTFE-modified compounds that can have decreased performance and insufficient wear resistance at higher loads, the Luvocom XTF compounds significantly improve wear resistance and provide low coefficient of friction while preserving mechanical performance. Benefits include short running-in behavior at start-up. “OEMs like to have a short running-in phase,” explained Robert Healy, Market Development Manager, Lehvoss North Americay. “Otherwise their customers can experience a major disruption, or even a failure, in a dynamic system.”

Additional benefit: less deposition in tool cavities

An additional benefit is less deposition in tool cavities during injection molding. Because of the improved mechanical properties, the specially formulated PTFE does not separate from the polymer during the injection molding process.

The first compounds in the Luvocom XTF series are based on PEEK (polyetheretherketone) polymer. Under high loads, PEEK compounds with XTF modification exhibit significantly lower levels of wear: 50% less than unreinforced PEEK and 80% less than PEEK modified with 15% standard PTFE. For example, in combination with aramid fibers, Luvocom XTF provides superior wear resistance while still showing robust mechanical properties in addition to a low coefficient of friction.

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