MoS₂‐decorated talc hybrid for improving the tribological property of Nomex/PTFE fabric composites

Abstract

Producing self‐lubricating fabric composites with excellent wear resistance and long service life is desired for their use in practical application, yet still challenging. Therefore, a novel nanoparticle of talc‐molybdenum sulfide (MoS2) hybrid nanosheets was synthesized via one‐step hydrothermal reaction in this work and incorporated into the Nomex/polytetrafluoroethylene (PTFE) self‐lubricating fabric composites. The spectroscopic and microscopic characterization demonstrated that the talc‐MoS2 nanosheets were successfully synthesized. The talc‐MoS2 nanosheets exhibit the obvious layered structure and covered with MoS2. The effect of talc‐MoS2 hybrid nanosheets on the tribological performance of fabric composites was systematically evaluated by tri‐pin on disk tribometer. The results show that the talc‐MoS2 nanosheets increased the thermal stability, thermal conductivity, tensile strength, and hardness of composite and was favorable for forming high‐quality transfer film on the surface of counterpart pin during the wear process owing to the cooperation effect of talc‐MoS2. The wear rate of talc‐MoS2‐reinforced composite was reduced by 30%–53% under different conditions compared with pure fabric composite.

From two‐dimensional materials to polymer nanocomposites with emerging multifunctional applications: A critical review

“…[ 91,92 ] However, although the exfoliation of MoS 2 to monolayer was performed for the first time in 1986, [ 93 ] major attention to the material was drawn only after the emergence of graphene. [ 94–99 ] As soon as Geim and Novoselov's [ 100 ] discussion on the “electric field effect in atomically thin carbon films” gained momentum, several researchers devoted their attention to MoS 2 and other TMDs.…”

“…[91,92] However, although the exfoliation of MoS 2 to monolayer was performed for the first time in 1986, [93] major attention to the material was drawn only after the emergence of graphene. [94][95][96][97][98][99] As soon as Geim and Novoselov's [100] discussion on the T A B L E 3 Thermal conductivity of the addressed 2DM and some derivatives…”

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

“…[10][11][12][13] In recent years, polytetrafluoroethylene (PTFE)/ Nomex fabric-reinforced composites (PNFRCs) have been used as self-lubricating liners for spherical plain bearings. 14,15 It is made up of PTFE for lubrication, amide fiber for load capacity, and adhesive resin to combine fine fiber together. 16 To enhance the lubricating property and wear resistance, researchers have conducted extensive research.…”

Tribological properties of PTFE-based fabric composites at cryogenic temperature

“…Cui et al [5] studied the tribological properties of spherical plain bearings with Nomex/PTFE fabric in a nitrogen environment at −160 °C and found that the transfer film formed on the outer surface of the bearing's inner ring was the main factor leading to the low-temperature lubrication performance. Although the tribological properties of hybrid-fabric composites have been well investigated under ambientand high-temperature conditions [23][24][25][26], there is little research on the tribological properties of PTFEbased fabric composites at cryogenic temperatures; in particular, the mechanism of transfer film formation at cryogenic temperatures remains basically unknown [2,5].…”