Significant friction and wear-reduction role of attapulgite nanofibers compounded in PEEK-Based materials

Wang, Wei; Zhao, Fen; Zhang, Jianjun; Мышкин, Н. К.; Zhang, Ga

doi:10.1016/j.compscitech.2022.109449

Cited by 26 publications

(6 citation statements)

References 47 publications

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“…The tribological properties of the optimal PAI/MC-APT/MSO composite coating are compared to two commercial coatings, along with PAI-based lubricant coatings with solid lubricants in other papers, and APT-modified monolithic lubricant materials. − According to Figure , our work demonstrates significant advantages in terms of both the friction coefficient and wear rate when compared to the PAI-based lubricant coating. Furthermore, the PAI/MC-APT/MSO composite coating displays a relatively lower friction coefficient compared to APT-modified monolithic composites, as well as the HM-1400B coating from Lanzhou Institute of Chemical Technology and Dupont 958G-303 commercial coating products from the USA.…”

Section: Resultsmentioning

confidence: 97%

Microvesicle-Embedded Solid–liquid Composite Coating for the Tribological Behavior Regulation and Long-Acting Lubrication

Li,

Chen,

et al. 2024

ACS Appl. Mater. Interfaces

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Friction interfaces in liquid-embedded composite lubrication coatings commonly comprise a combination of discontinuous fluid films and rough solid contact surfaces, which together ensure easy shearing and a prolonged wear life. However, achieving high efficacy in mixed lubrication poses a challenge due to the conflicting nature of enhanced migration freedom for the liquid lubricant and increased mechanical strength of the solid matrix. Recent efforts have focused on incorporating reinforcing fillers to develop multicomponent, multiphase composites that can address this paradox. Here, we describe a modified attapulgite (APT) with strong biphasic wettability via the oil decompressive osmosis treatment on APT nanocontainers grafted with long nonpolar alkyl chains. This modified APT enables control over the size, distribution, and mobility of lubricant droplets by constructing a Pickering emulsion and toughens the solid-phase matrix through dispersion strengthening. Additionally, the introduction of APT induces the formation of a solid tribofilm during friction, which possesses a higher oil adsorption capacity, as verified through first-principles calculations based on density functional theory (DFT). Consequently, the fluid films can be replenished by the fracture of nanocontainers and adsorption from the bulk phase; further comprehensive and effective regulation of the friction interface leads to low friction and wear.

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Section: Resultsmentioning

confidence: 97%

Microvesicle-Embedded Solid–liquid Composite Coating for the Tribological Behavior Regulation and Long-Acting Lubrication

Li,

Chen,

et al. 2024

ACS Appl. Mater. Interfaces

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“…Figure illustrates XPS spectra of the tribofilms generated on the steel surface rubbed with 5M/PF, 3 T /5M/PF, 5 N /5M/PF, and 3 N /3T/5M/PF. In C 1s spectra, the peaks at 283.5, 284.8, and 288.2 eV are assigned to C–H, C–C, and C=O bonds of the tribo-reactions products . The peaks at 531.5 eV in the O 1s spectra correspond to the C=O bond.…”

Section: Resultsmentioning

confidence: 99%

“…In C 1s spectra, the peaks at 283.5, 284.8, and 288.2 eV are assigned to C−H, C−C, and C=O bonds of the tribo-reactions products. 70 The peaks at 531.5 eV in the O 1s spectra correspond to the C=O bond. The C−H, C−C, as well as C=O bonds are identified in all the tribofilms of 5M/PF, 3T/5M/PF, 5N/5M/PF, and 3N/3T/5M/PF.…”

Section: Worn Surfaces and Tribofilmsmentioning

confidence: 99%

Synergism of TiO₂ and Ni on the Growth of a Double-Layered Tribofilm: New Strategy for ZDDP Replacement

Zhang,

Xu,

et al. 2024

ACS Sustainable Chem. Eng.

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Phenolic resin (PF) coatings were formulated and deposited onto Al alloy surfaces, and their tribo-performance was evaluated. It is demonstrated that even when being lubricated with poly(alpha olefin) 4 (PAO 4) base oil, the PF-based coatings reinforced with titanium dioxide (TiO2) or/and nickel (Ni) exhibit excellent tribo-performance under harsh boundary lubrication conditions. Interestingly, synergetic antiwear roles of TiO2 and Ni were identified. In comparison to the conventional PF coating filled with molybdenum disulfide (MoS2), friction and wear of the hybrid coating containing TiO2 and Ni are reduced by up to 80.7% and 83.2%, respectively. Furthermore, the hybrid coating lubricated with PAO 4 base oil exhibit a much lower friction and wear than the uncoated Al alloy lubricated with zinc dialkyldithiophosphat (ZDDP)-additivated oil. Our work provides direct evidence that the addition of TiO2 or Ni leads to the growth of tribofilms of distinctly different nanostructures. It is interesting that the addition of a TiO2/Ni combination gives rise to the formation of a double-layered tribofilm, i.e., a TiO2/NiO bottom layer and a carbon-based top layer. This work offers an avenue for minimizing dependency on hazardous lubrication additives.

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“…Recently, many efforts have been dedicated to the development of polymer composite materials. Among various polymer matrices, polyetheretherketone (PEEK) is widely studied and considered as a promising matrix material in the tribological application field owing to its excellent advantages of high fracture toughness and compression strength, chemical and thermal resistance, and self-lubricating capability. − Different studies on the improvements of the tribological properties of PEEK by adding reinforcements, such as hard particles, , reinforcing fibers, − two-dimensional materials, , or a combination of those, , were conducted. The material type and morphology have significant effects on the tribological behaviors of the polymer composite .…”

Section: Introductionmentioning

confidence: 99%

Effects of the Mesoporous Filler and Oleophilic Property on the Tribological Behavior of Polyetheretherketone Composites

Ji,

Xie,

Luo

et al. 2024

Langmuir

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Porous composites, such as polyimide and polyetheretherketone (PEEK) polymer composites, became more attractive as a result of excellent specific strength, lightweightness, and smart lubrication. However, revealing the influence of a porous filler on the friction behaviors of polymer composites remains a challenge. The current work examines the effects of the pore structure and wettability on the mechanical and tribological performances of polymer composites reinforced with fillers. Three kinds of particles (non-porous, porous, and oleophobic porous) act as fillers within PEEK, respectively. It was identified that adding porous zeolite particles into PEEK slightly decreased the mechanical property. The zeolite particles significantly increased the oil adsorption of the composite, leading to a significant increase in the friction coefficient at 10 wt % content. However, the friction coefficient of the PEEK composite filled with 20 wt % modified zeolite was relatively low as a result of the weak adsorption. The interface analyses indicated that the thickness of the oil film was controlled via porous structures, changing the lubrication regime of the tribopair. The reason is the appropriate adsorption of oil and the release of zeolite from the composites during the friction process. These results can offer technical guidance to control the friction behaviors of composites under oil-lubricating conditions by a porous particle and pore modification.

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Significant friction and wear-reduction role of attapulgite nanofibers compounded in PEEK-Based materials

Cited by 26 publications

References 47 publications

Microvesicle-Embedded Solid–liquid Composite Coating for the Tribological Behavior Regulation and Long-Acting Lubrication

Microvesicle-Embedded Solid–liquid Composite Coating for the Tribological Behavior Regulation and Long-Acting Lubrication

Synergism of TiO₂ and Ni on the Growth of a Double-Layered Tribofilm: New Strategy for ZDDP Replacement

Effects of the Mesoporous Filler and Oleophilic Property on the Tribological Behavior of Polyetheretherketone Composites

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Significant friction and wear-reduction role of attapulgite nanofibers compounded in PEEK-Based materials

Cited by 26 publications

References 47 publications

Microvesicle-Embedded Solid–liquid Composite Coating for the Tribological Behavior Regulation and Long-Acting Lubrication

Microvesicle-Embedded Solid–liquid Composite Coating for the Tribological Behavior Regulation and Long-Acting Lubrication

Synergism of TiO2 and Ni on the Growth of a Double-Layered Tribofilm: New Strategy for ZDDP Replacement

Effects of the Mesoporous Filler and Oleophilic Property on the Tribological Behavior of Polyetheretherketone Composites

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Synergism of TiO₂ and Ni on the Growth of a Double-Layered Tribofilm: New Strategy for ZDDP Replacement