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The effect of different layered materials on the tribological properties of PTFE composites

  • Song Li
  • Chunjian Duan
  • Xiao Li
  • Mingchao Shao
  • Chunhui Qu
  • Di Zhang
  • Qihua WangEmail author
  • Tingmei Wang
  • Xinrui ZhangEmail author
Open Access
Research Article


Two-dimensional (2D) lamellar materials have unique molecular structures and mechanical properties, among which molybdenum disulfide (MoS2) and graphitic carbon nitride (g-C3N4) with different interaction forces served as reinforcing phase for polytetrafluoroethylene (PTFE) composites in the present study. Thermal stability, tribological and thermomechanical properties of composites were comprehensively investigated. It was demonstrated that g-C3N4 improved elastic deformation resistance and thermal degradation characteristics. The addition of g-C3N4 significantly enhanced anti-wear performance under different loads and speeds. The results indicated that PTFE composites reinforced by g-C3N4 were provided with better properties because the bonding strength of g-C3N4 derived from hydrogen bonds (H-bonds) was stronger than that of MoS2 with van der Waals force. Consequently, g-C3N4 exhibited better thermomechanical and tribological properties. The result of this work is expected to provide a new kind of functional filler for enhancing the tribological properties of polymer composites.


graphitic carbon nitride lamellar materials hydrogen bonds wear resistance 



The authors would like to thank the financial support from National Basic Research Program of China (973 Program, Grant No. 2015CB057502), the Youth Innovation Promotion Association of Chinese Academy of Sciences (Grant No. 2018457), and National Key Research and Development Plan (Grant No. 2016YFF0101000). This research was also partially supported by the Key Research Program of Frontier Science, Chinese Academy of Sciences (Grant No. QYZDJ-SSW-SLH056) and National Natural Science Foundation of China (Grant No. 51673205).


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Authors and Affiliations

  • Song Li
    • 1
    • 2
  • Chunjian Duan
    • 1
    • 2
  • Xiao Li
    • 1
    • 2
  • Mingchao Shao
    • 1
    • 2
  • Chunhui Qu
    • 1
    • 2
  • Di Zhang
    • 1
  • Qihua Wang
    • 1
    Email author
  • Tingmei Wang
    • 1
  • Xinrui Zhang
    • 1
    Email author
  1. 1.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhouChina
  2. 2.University of Chinese Academy of SciencesBeijingChina

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