Tribology Performance of Polyol-Ester Based TiO2, SiO2, and Their Hybrid Nanolubricants

Hamisa, A H; Azmi, W.H.; Ismail, Mohd Farid; Rahim, Rosminazuin Ab; Ali, Hafız Muhammad

doi:10.3390/lubricants11010018

Cited by 15 publications

(7 citation statements)

References 53 publications

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“…The absence of visual alterations or settling further affirms the suitability of the formulation for potential applications in tribological systems. These findings contribute evidence of the successful integration and long-term stability of nanoparticles within the nanolubricant, paving the way for enhanced tribological performance and extended service life 41 , 42 .…”

Section: Resultsmentioning

confidence: 71%

Synergistic performance evaluation of MoS2–hBN hybrid nanoparticles as a tribological additive in diesel-based engine oil

Nagarajan

Sridewi

Wong

et al. 2023

Sci Rep

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In this study, MoS2–hBN hybrid nanoparticles were synthesized using an advanced microwave platform for new nanolubricant formulations. The synthesized nanoparticles were characterized by field-emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, and Raman spectroscopy. The hybrid nanoparticles were then introduced into a 20W40 diesel-based engine oil to produce a nanolubricant. The physical and chemical properties of the nanolubricant were investigated, including the viscosity index, stability, volatility, tribological properties, oxidation properties, and thermal conductivity. The results showed that the inclusion of 0.05 wt% MoS2–hBN hybrid nanoparticles in the oil significantly reduced the coefficient of friction and wear scar diameter by 68.48% and 35.54%, respectively. Moreover, it exhibited substantial oxidation and thermal conductivity improvement of 38.76% and 28.30%, respectively, at 100 °C. These findings demonstrate the potential of MoS2-hBN hybrid nanoparticles as an effective additive to enhance the properties of nanolubricant significantly. Furthermore, this study offers valuable insights into the underlying mechanisms responsible for the observed enhancements. The promising outcomes of this investigation contribute to the advancement of nanotechnology-based lubricants, showcasing their potential for improving engine efficiency and prolonging the lifespan of machinery.

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Section: Resultsmentioning

confidence: 71%

Synergistic performance evaluation of MoS2–hBN hybrid nanoparticles as a tribological additive in diesel-based engine oil

Nagarajan

Sridewi

Wong

et al. 2023

Sci Rep

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“…Nevertheless, the surface roughness of the titanium foils increased gradually when further increasing the concentration of TiO 2 nanoparticles from 3.0 wt.% to 9.0 wt.%. The phenomenon can be explained by the smaller contact area due to the aggregation of nanoparticles [ 36 ].…”

Section: Resultsmentioning

confidence: 99%

Tribological Properties and Lubrication Mechanisms of Water-Based Nanolubricants Containing TiO2 Nanoparticles during Micro Rolling of Titanium Foils

Ma,

et al. 2023

Materials

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The tribological behavior of traditional oil-in-water (O/W) lubricants (1.0 wt.%) and nano-TiO2 additive lubricants (1.0–9.0 wt.%) during micro rolling of titanium foils were analyzed. In this study, the surface morphologies of titanium foils under various lubrication conditions were assessed, and the corresponding lubrication mechanisms were revealed. The tribological behavior of nano-TiO2 additive lubricants during micro rolling of titanium foils was also explored through a series of characterization methods. The utilization of nano-TiO2 additive lubricants in micro rolling reduces the surface roughness of titanium foils. Moreover, it effectively inhibits the generation of indentations and cracks during rolling processes, enhancing the surface quality of rolled specimens. Additionally, owing to the synergism of rolling, tribo-film, mending and polishing effects of the nanoparticles, both the rolling force and surface roughness were minimized by using lubricants containing 3.0 wt.% TiO2 nanoparticles. Overall, an optimal concentration (3.0 wt.%) of TiO2 nanoparticles in water-based nanolubricants was obtained with enhanced tribological properties and lubrication performance during micro rolling of titanium foils.

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“…In addition to the methods described above to modify PIs, the researchers also explored other methods. SiO 2 nanoparticles have extensive applications in promoting the thermal, mechanical and tribological properties of polymers (Hamisa et al , 2023; Ismail et al , 2022). It has been reported that the in situ polymerization method was used to prepare nanocomposites by incorporating nano-SiO 2 into PI matrix (Zhao et al , 2016).…”

Section: Progress In Tribological Research Of Polyimide Compositesmentioning

confidence: 99%

Review of tribological properties of polyimide-based composite materials

Yan

Zhang

Wang

2023

ILT

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Purpose As a high-performance engineering plastic, polyimide (PI) is widely used in the aerospace, electronics and automotive industries. This paper aims to review the latest progress in the tribological properties of PI-based composites, especially the effects of nanofiller selection, composite structure design and material modification on the tribological and mechanical properties of PI-matrix composites. Design/methodology/approach The preparation technology of PI and its composites is introduced and the effects of carbon nanotubes (CNTs), carbon fibers (CFs), graphene and its derivatives on the mechanical and tribological properties of PI-based composites are discussed. The effects of different nanofillers on tensile strength, tensile modulus, coefficient of friction and wear rate of PI-based composites are compared. Findings CNTs can serve as the strengthening and lubricating phase of PI, whereas CFs can significantly enhance the mechanical properties of the matrix. Two-dimensional graphene and its derivatives have a high modulus of elasticity and self-lubricating properties, making them ideal nanofillers to improve the lubrication performance of PI. In addition, copolymerization can improve the fracture toughness and impact resistance of PI, thereby enhancing its mechanical properties. Originality/value The mechanical and tribological properties of PI matrix composites vary depending on the nanofiller. Compared with nanofibers and nanoparticles, layered reinforcements can better improve the friction properties of PI composites. The synergistic effect of different composite fillers will become an important research system in the field of tribology in the future.

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Tribology Performance of Polyol-Ester Based TiO2, SiO2, and Their Hybrid Nanolubricants

Cited by 15 publications

References 53 publications

Synergistic performance evaluation of MoS2–hBN hybrid nanoparticles as a tribological additive in diesel-based engine oil

Synergistic performance evaluation of MoS2–hBN hybrid nanoparticles as a tribological additive in diesel-based engine oil

Tribological Properties and Lubrication Mechanisms of Water-Based Nanolubricants Containing TiO2 Nanoparticles during Micro Rolling of Titanium Foils

Review of tribological properties of polyimide-based composite materials

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