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<p>Traditional polyetheretherketone/polytetrafluoroethylene (PEEK/PTFE) materials often fail to meet wear resistance requirements under complex operating conditions, particularly high-load and dry friction conditions. This study uses a composite-plasticization method with a mud-containing composite to prepare C/PEEK/PTFE composite coatings with varying graphite content. Friction and wear tests, scanning electron microscopy (SEM) analysis, energy-dispersive spectroscopy (EDS) analysis, and hardness testing were performed to evaluate the friction and wear performance of C/PEEK/PTFE composite coatings with different graphite contents under dry friction conditions. Results show that the 10% C/PTFE–PEEK composite exhibits optimal mechanical properties, demonstrating a 70.9% increase in hardness and an average 32% improvement in wear resistance under three different load conditions. At room temperature and under low-load dry friction conditions, the wear mechanism of C/PEEK/PTFE composite coatings evolves from abrasive wear accompanied by fatigue wear to abrasive wear accompanied by adhesive wear as graphite content increases, compared to PTFE–PEEK composite materials. As the load increases, adhesive wear begins to dominate. This study guides future research on high-performance composite coatings.</p>

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Study on the Friction and Wear Performance of PTFE Modified with Different Graphite Content

  • 期刊论文

  • 发表日期：

    2025年10月22日

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  • Xuehui Chen,
  • Jilong Wang,
  • Congmin Li,
  • Ting Gao,
  • Hao Li,
  • Tiantian Jing,
  • Jialiang Sun,
  • Wei Liu

摘要

Traditional polyetheretherketone/polytetrafluoroethylene (PEEK/PTFE) materials often fail to meet wear resistance requirements under complex operating conditions, particularly high-load and dry friction conditions. This study uses a composite-plasticization method with a mud-containing composite to prepare C/PEEK/PTFE composite coatings with varying graphite content. Friction and wear tests, scanning electron microscopy (SEM) analysis, energy-dispersive spectroscopy (EDS) analysis, and hardness testing were performed to evaluate the friction and wear performance of C/PEEK/PTFE composite coatings with different graphite contents under dry friction conditions. Results show that the 10% C/PTFE–PEEK composite exhibits optimal mechanical properties, demonstrating a 70.9% increase in hardness and an average 32% improvement in wear resistance under three different load conditions. At room temperature and under low-load dry friction conditions, the wear mechanism of C/PEEK/PTFE composite coatings evolves from abrasive wear accompanied by fatigue wear to abrasive wear accompanied by adhesive wear as graphite content increases, compared to PTFE–PEEK composite materials. As the load increases, adhesive wear begins to dominate. This study guides future research on high-performance composite coatings.