Lignin composite ionic liquid lubricating material as a water-based lubricating fluid additive with excellent lubricating, anti-wear and anti-corrosion properties

Yu, Qiangliang; Yang, Zhiquan; Huang, Qing; Lv, Huiying; Zhang, Kang; Yan, Xiaoyan; Wang, Xingwei; Yang, Wufang; Zhou, Chunyu; Yu, Bo; Zhou, Feng

doi:10.1016/j.triboint.2022.107742

Cited by 32 publications

(24 citation statements)

References 43 publications

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“…Figure a shows the fine spectrum of O 1s on the worn surface lubricated with 1 wt % NCD SFO dispersion, showing the peak components with binding energies of about 529.6 (Fe–O), 530.4 (C–O), 531.3 (CO), and 532.1 eV (O–CO). The appearance of the Fe–O peak may be the metal oxide formed in the friction process . The N 1s spectrum (Figure b) shows peaks with binding energies of about 398.6, 399.4, and 400.1 eV, which was attributed to the C–N and −NH groups in the carbonitrides after carbamide-assisted carbonization .…”

Section: Tribological Performance Test Of Ncdsmentioning

confidence: 95%

“…Figure 8a shows the fine spectrum of O 1s on the worn surface lubricated with 1 wt % NCD SFO dispersion, showing the peak The appearance of the Fe−O peak may be the metal oxide formed in the friction process. 38 The N 1s spectrum (Figure 8b) shows peaks with binding energies of about 398.6, 399.4, and 400.1 eV, which was attributed to the C−N and −NH groups in the carbonitrides after carbamide-assisted carbonization. 12 It can be seen in Figure 8c that the characteristic peaks appear when the binding energies were 706.4, 709.1, 714.0, 717.0, and 720.1 eV, which confirms the existence of metal oxides Fe 2 O 3 and Fe 3 O 4 .…”

Section: ■ Tribological Performance Test Of Ncdsmentioning

confidence: 99%

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Nitrogen-Doped Carbon Dot as a Lubricant Additive in Polar and Non-polar Oils for Superior Tribological Properties via Condensation Reaction

et al. 2023

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Nitrogen-doped lubricating additives have been proved to be an effective strategy to improve the tribological properties of lubricating oil. However, the traditional preparation methods of nitrogen-doped lubricating additives have the defects including harsh preparation conditions and a time-consuming preparation process. Herein, we report a preparation method of nitrogen-doped carbon dot (NCD) lubricating additives in a short time by one-step aldehyde condensation reaction at room temperature. The small size effect and nitrogen-containing functional groups of NCD lubricating additives provide favorable conditions for their dispersion and low friction in base oil. The tribological properties of NCD lubricating additives in sunflower oil (SFO) and PAO10 were systematically evaluated. The results show that NCD lubricating additives could reduce the average friction coefficient of SFO from 0.15 to 0.06 and PAO10 oil from 0.12 to 0.06, and the wear width is also decreased by 50–60%. In particular, the friction curve is very stable, and the friction coefficient was maintained at about 0.06 even under the working time of 5 h. By analyzing the morphology and chemical properties of the worn surface, the lubrication effect of NCDs is attributed to its small size effect and adsorption, which was easy to enter the friction gap to fill and repair. Furthermore, the doping of nitrogen induces the occurrence of friction chemical reactions, forming a friction film of nitrides and metal oxides at the friction interface, which effectively reduces the friction and wear of the surface. These findings provide a possibility for the convenient and effective preparation of NCD lubricating additives.

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Section: Tribological Performance Test Of Ncdsmentioning

confidence: 95%

Section: ■ Tribological Performance Test Of Ncdsmentioning

confidence: 99%

Nitrogen-Doped Carbon Dot as a Lubricant Additive in Polar and Non-polar Oils for Superior Tribological Properties via Condensation Reaction

et al. 2023

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“…The corrosion problem is the primary concern of water-based lubrication; ILs with high polarity and film-forming properties can form a corrosion-inhibiting film on metal surfaces to prevent the erosion of corrosive ions. 15 Typically, an IL's chemical composition is closely associated with its corrosion performance, and introducing functional groups (N, O, S elements and conjugated triple or double bonds) equipped with anticorrosion properties in the molecular structure design will be an effective strategy. 16 So, it is urgently needed to construct and develop multifunctional water-based lubricating systems.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The polarizability-regulated ILs can display high compatibility and stability with water-based lubricating systems for the enhancement of load-bearing properties and corrosion resistance. The corrosion problem is the primary concern of water-based lubrication; ILs with high polarity and film-forming properties can form a corrosion-inhibiting film on metal surfaces to prevent the erosion of corrosive ions . Typically, an IL’s chemical composition is closely associated with its corrosion performance, and introducing functional groups (N, O, S elements and conjugated triple or double bonds) equipped with anticorrosion properties in the molecular structure design will be an effective strategy .…”

Section: Introductionmentioning

confidence: 99%

Achieving Greener, Super-Robust Performance Water-Based Lubrication: Obtained by a Multifunctional Ionic Liquid Aqueous System and Formation of Unique Interfacial Interactions

Tian

et al. 2023

ACS Sustainable Chem. Eng.

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Owing to the green, high-performance, and application-specific work conditions, water-based lubricating systems show unlimited potential for chemical engineering development. The interfacial behavior of functional additives in aqueous systems is complex and variable due to polarity and interfacial activity, thus showing important research significance. Herein, five novel ionic liquids were synthesized; their unique interfacial behavior in the polar water system contributes a lot to the advanced corrosion resistance and the improved extreme pressure-bearing capacity. The polar groups in the molecular structure of ionic liquids can adsorb preferentially in competition with water molecules, resulting in the formation of an adsorption layer with a high elastic modulus on the metal surface. Benefiting from the tribochemical reaction and the strong polar adsorption effect, the tribofilm at the sliding asperity exhibited effective antiscuffing and antiwear performance. Moreover, their characteristic cationic groups enrich the driving force of the molecular self-assembly process and enhance the ability to form ordered molecular aggregates, whose behavior in an aqueous system facilitates super-robust lubricity. This work can promote the in-depth understanding, future design, and optimization of the aqueous lubricating system, providing content enrichment and expansion for the lubrication technology for harsh service conditions.

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“…However, water-based lubricants also have disadvantages, such as poor lubricating ability and extreme pressure and resistance wearability. Thus, it is especially critical to explore excellent water-based lubrication additives. − …”

Section: Introductionmentioning

confidence: 99%

Black Phosphorus Quantum Dots with a Core–Shell Nanostructure as a Water-Based Lubrication Additive

Dong

Wang

Gao

et al. 2023

ACS Appl. Nano Mater.

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The unique tribological characteristics of black phosphorus quantum dots (BPQDs) have recently attracted much attention. However, the long-term stable lubrication of BPQDs and prevention of degradation in ultrapure water remain huge challenges. Herein, BPQDs@silica (BPQDs@SiO2) core–shell materials were designed and synthesized. The BPQDs are uniformly distributed in the SiO2 shell. The as-prepared BPQDs@SiO2 as the water-based lubrication additive has remarkable lubricity, wettability, and stability. In particular, compared with the average coefficient of friction (COF) and wear rate of ultrapure water, those of BPQDs@SiO2, being a water-based lubrication additive, could be reduced by 45.7 and 83.0% at 10 N and 150 r/min, respectively. The lubrication mechanisms of BPQDs@SiO2 as a water-based lubrication additive were proposed based on the friction test and wear surface analysis. The excellent lubricity performances of BPQDs@SiO2 are owed to the polishing of the SiO2 shell, the extreme pressure property of the BPQD core, and the tribo-chemical reaction film. This investigation established a simple, convenient, and feasible method for using the BPQDs@SiO2 materials as a water-based lubrication additive. It is expected that BPQDs with a core-shell nanostructure will open up new ideas for the development of excellent lubricating nanomaterials.

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Lignin composite ionic liquid lubricating material as a water-based lubricating fluid additive with excellent lubricating, anti-wear and anti-corrosion properties

Cited by 32 publications

References 43 publications

Nitrogen-Doped Carbon Dot as a Lubricant Additive in Polar and Non-polar Oils for Superior Tribological Properties via Condensation Reaction

Nitrogen-Doped Carbon Dot as a Lubricant Additive in Polar and Non-polar Oils for Superior Tribological Properties via Condensation Reaction

Achieving Greener, Super-Robust Performance Water-Based Lubrication: Obtained by a Multifunctional Ionic Liquid Aqueous System and Formation of Unique Interfacial Interactions

Black Phosphorus Quantum Dots with a Core–Shell Nanostructure as a Water-Based Lubrication Additive

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