Effects of solid lubricants on the tribological behavior of steel‐backed UHMWPE fabric composites

Abstract

Aboard ship, the use of lubricating oil in mechanical equipment is sometimes difficult to achieve and applied oil can easily leak. The use of self‐lubricating materials can largely solve this problem. In this study, three kinds of solid lubricant‐enhanced 304 stainless steel‐backed ultrahigh molecular weight polyethylene (UHMWPE) fabric composites were fabricated with the addition of graphite, molybdenum (IV) disulfide, or polytetrafluoroethylene (PTFE). They were tested under various rotating speeds and compared with pure steel‐backed UHMWPE fabric composites. The tribological performance of these composites was evaluated by analysis of friction coefficient, wear rate, and worn face morphology. The results showed that PTFE‐enhanced composites exhibited the best friction reduction performance under all test conditions, better antiwear ability at rotating speeds under 200 rpm, and optimized wear surface morphology, thus indicating better synergy between PTFE and UHMWPE fabric.

Lubricating performance of polytetrafluoroethylene hybrid fabric composites with removed thermosetting resin at cryogenic temperatures

“…The twill pattern fabric with a higher PTFE ratio has better lubricating performance. 17 The satisfactory tribological performance can be improved by adding lubricant additives such as PTFE, 17,18 MoS2, 14 graphite, graphene, 15 carbon fiber, 19 multi-walled carbon nanotubes, 20 and a combination of them in the resin matrix. Furthermore, chemical treatments including chemical grafting, 21 in-situ nanoparticles growth, 22,23 and plasma treatment 24 are widely used to modify surface of fiber.…”

Effect of nano-serpentine and nano-La2O3 on the frictional properties of PTFE composites in seawater environment

“…Polytetrafluoroethylene (PTFE) composites are potential engineering polymer matrix composites for self-lubricating bearings and seals in various mechanical systems (Song and Zhao, 2019; Manafi and Kiahosseini, 2019; Lin et al , 2021; Bian et al , 2021). Due to their low coefficient of friction (COF), excellent chemical stability, low water absorption and good corrosion resistance, PTFE composites are suitable for use in aqueous environments where moving parts are in contact with water (Haidar et al , 2018; Campbell et al , 2019).…”

Synergistic effects of carbon fiber and polytetrafluoroethylene on the friction and wear behavior of polyarylene ether nitrile under dry lubrication condition

“…Therefore, in practice, it is often necessary to reduce the friction by filling 9 . Among the many filler modifiers, Polytetrafluoroethylene (PTFE) is commonly used 19–23 . PTFE has low cohesion due to the repulsion of the negative charges of the fluorine atoms in its different molecular chains.…”

“…9 Among the many filler modifiers, Polytetrafluoroethylene (PTFE) is commonly used. [19][20][21][22][23] PTFE has low cohesion due to the repulsion of the negative charges of the fluorine atoms in its different molecular chains. During the friction process, the PTFE macromolecules are very easy to transfer to the friction surface.…”