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Research Article | Open Access

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

Song LI1,2, Chunjian DUAN1,2, Xiao LI1,2, Mingchao SHAO1,2, Chunhui QU1,2, Di ZHANG1, Qihua WANG1( ), Tingmei WANG1, Xinrui ZHANG1( )
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
University of Chinese Academy of Sciences, Beijing 100049, China
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Abstract

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.

Keywords

graphitic carbon nitridelamellar materialshydrogen bondswear resistance

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Friction
Volume 8 Issue 3,
June 2020
Pages 542-552
DOI: 10.1007/s40544-019-0276-4

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Cite this article:
LI S, DUAN C, LI X, et al. The effect of different layered materials on the tribological properties of PTFE composites. Friction, 2020, 8(3): 542-552. https://doi.org/10.1007/s40544-019-0276-4

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Received: 26 October 2018
Revised: 19 December 2018
Accepted: 09 January 2019
Published: 17 April 2019
© The author(s) 2019

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