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

Two-dimensional (2D) lamellar materials have unique molecular structures and mechanical properties, among which molybdenum disulfide (MoS 2 ) and graphitic carbon nitride (g-C 3 N 4 ) with different interaction forces served as reinforcing phase for polytetrafluoroethylene (PTFE) composites in the p...

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Bibliographic Details
Published in:Friction 2020-06, Vol.8 (3), p.542-552
Main Authors: Li, Song, Duan, Chunjian, Li, Xiao, Shao, Mingchao, Qu, Chunhui, Zhang, Di, Wang, Qihua, Wang, Tingmei, Zhang, Xinrui
Format: Article
Language:English
Subjects:
Bonding strength
Carbon nitride
Corrosion and Coatings
Deformation resistance
Elastic deformation
Engineering
Friction
Hydrogen bonds
Lamellar structure
Layered materials
Mechanical Engineering
Mechanical properties
Molybdenum disulfide
Nanotechnology
Physical Chemistry
Polymer matrix composites
Polytetrafluoroethylene
Research Article
Surfaces and Interfaces
Thermal degradation
Thermal resistance
Thermal stability
Thermomechanical properties
Thin Films
Tribology
Two dimensional composites
Van der Waals forces
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Summary:Two-dimensional (2D) lamellar materials have unique molecular structures and mechanical properties, among which molybdenum disulfide (MoS 2 ) and graphitic carbon nitride (g-C 3 N 4 ) 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-C 3 N 4 improved elastic deformation resistance and thermal degradation characteristics. The addition of g-C 3 N 4 significantly enhanced anti-wear performance under different loads and speeds. The results indicated that PTFE composites reinforced by g-C 3 N 4 were provided with better properties because the bonding strength of g-C 3 N 4 derived from hydrogen bonds (H-bonds) was stronger than that of MoS 2 with van der Waals force. Consequently, g-C 3 N 4 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.
ISSN:2223-7690
2223-7704
DOI:10.1007/s40544-019-0276-4