MoS2 filled with PTFE
- MoS2 is a compound produced by chemical processing of molybdenum ore, and is a very important solid lubricant in the industry. It is non-conductive and has good chemical stability. It is not easily soluble in water, acids, alkalis, and organic solvents, but soluble in hot sulfuric acid and aqua regia.
- MoS2 is filled into PTFE, which mainly improves the self-lubricity, wear resistance and pressure resistance of PTFE, and can also improve the thermal conductivity.
- Generally speaking, MoS2, carbon fiber, glass fiber, bronze powder, etc. are filled into PTFE and blended. This type of composite material has excellent wear resistance and self-lubricating properties, and is suitable for mechanical parts under high-speed working conditions.
- Although MoS2 contains active sulfur, it is not corrosive and destructive to copper parts within the temperature range of PTFE. Instead, molybdenum disulfide particles adhere to the surface of the copper parts due to contact friction to form a transfer film, which isolates the copper parts from corrosion by other media.
- MoS2 filled PTFE is not resistant to strong acids, and is not resistant to strong oxidants at high temperatures.
Figure 2. The preparation of PTFE composites 
- Prasad M Patare, Dr G. S. Lathkar, Materials Today: Proceedings 5 (2018) 7310–7319.
- Zhiqiang Wang, Shaofeng Wu, Jing Ni, Proc IMechE Part J: J Engineering Tribology 232 (2018) 1-12.
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