Reference Correlation of the Viscosity of <i>n</i>-Hexadecane from the Triple Point to 673 K and up to 425 MPa

Meng, Xianyang; Sun, Yukun; Cao, Feng; Wu, Jiangtao; Vesovic, Velisa

doi:10.1063/1.5039595

Cited by 14 publications

(16 citation statements)

References 95 publications

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“…These results agree well with existing literature data with an average absolute relative deviation of 2% across all selected literature sources. The experimental data obtained here may be useful in the development of a more wide-ranging correlation for the viscosity of hexadecane …”

Section: Discussionmentioning

confidence: 95%

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Viscosities of Liquid Hexadecane at Temperatures between 323 K and 673 K and Pressures up to 4 MPa Measured Using a Dual-Capillary Viscometer

et al. 2019

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We report viscosities of liquid hexadecane measured at temperatures between (323 and 673) K and at pressures up to 4.0 MPa. This study significantly extends the temperature range over which viscosity data for hexadecane are available. The experiments were carried out using a dual-capillary viscometer that measures the ratio of the viscosity at the temperature in question to that at a reference temperature, 298.15 K in this work, at which the viscosity is well known. Absolute viscosities were then obtained with an estimated expanded relative uncertainty of about 3 % at 95 % confidence. An empirical function was developed to correlate the viscosity ratio with the density ratio and this fitted the experimental data within about 1 %. The results were found to agree well with the existing literature data.

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Section: Discussionmentioning

confidence: 95%

“…The experimental data obtained here may be useful in the development of a more wide-ranging correlation for the viscosity of hexadecane. 26…”

Section: ■ Conclusionmentioning

confidence: 99%

Viscosities of Liquid Hexadecane at Temperatures between 323 K and 673 K and Pressures up to 4 MPa Measured Using a Dual-Capillary Viscometer

et al. 2019

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“…In parallel, these experimental values were compared to the calculated hexadecane film thickness. The pressure-viscosity coefficient of hexadecane was deduced from the data presented by Meng et al [40] fitted with Roelands' equation [41] and a viscosity of 3 mPa.s. The resultant value, α = 10 GPa −1 , was low, leading to the use of Moes-Venner prediction [42] to calculate the hexadecane film thickness.…”

Section: Tribology: Irismentioning

confidence: 99%

Towards a Polymer-Brush-Based Friction Modifier for Oil

et al. 2021

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To meet the need for oil-compatible friction modifier additives that can significantly reduce energy consumption in the boundary-lubrication regime, a macromolecular design approach has been taken. The aim was to produce a lubricious polymer film on the sliding surfaces. A series of readily functionalizable block copolymers carrying an oleophilic poly(dodecyl methacrylate) block and a functionalizable poly(pentafluorophenyl methacrylate) block of various lengths was synthesized by means of reversible addition-fragmentation chain-transfer (RAFT) polymerization. The poly(pentafluorophenyl methacrylate) block was used to attach surface-active nitrocatechol anchoring groups to the polymer. The friction-reduction properties of these polymers were assessed with 0.5 wt% solutions in hexadecane by means of rolling-sliding macroscopic tribological tests. Block copolymers with roughly equal block lengths and moderate molecular weights were significantly more effective at friction reduction than all other architectures investigated. They also displayed lower friction coefficients than glycerol monooleate—a commercially used additive. The film-formation ability of these polymers was examined using a quartz-crystal microbalance with dissipation (QCM-D), by monitoring their adsorption onto an iron oxide-coated QCM crystal. The polymer with highest lubrication efficiency formed a thin film of ~ 17 nm thickness on the crystal, indicating the formation of a polymer brush. Interferometric rolling-sliding experiments with the same polymer showed a separating film thickness of ~ 20 nm, which is consistent with the QCM-D value, bearing in mind the compression of the adsorbed layers on the two sliding surfaces during tribological testing. Graphical Abstract

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“…The results are listed in Table . The results were compared with the experimental data reported by Trusler et al In addition, Meng et al reported a reference correlation of the viscosity of n -hexadecane, the data of this work were also compared with the calculated results of Meng et al The deviations are shown in Figure . In general, our results agree with the values of the two literatures.…”

Section: Resultsmentioning

confidence: 82%

High-Pressure Liquid Viscosity of n-Hexadecane/ethyl Octanoate Mixtures

2021

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The liquid viscosity of n-hexadecane/ethyl octanoate mixtures was measured at the mole fraction of 0.25, 0.5, and 0.75. The measurements were performed at the temperatures from 298 to 361 K and pressures up to 30 MPa. A self-established viscosity system based on the falling cylinder method was used for the present measurements. After careful evaluation, for the present measurements, the combined expanded relative uncertainty of the viscosity was less than 0.04 with a 0.95 confidence. The viscosity values at each mole fraction were correlated by Andrade–Tait equation, and this equation can successfully describe the experimental data within their estimated uncertainties.

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Reference Correlation of the Viscosity of n-Hexadecane from the Triple Point to 673 K and up to 425 MPa

Cited by 14 publications

References 95 publications

Viscosities of Liquid Hexadecane at Temperatures between 323 K and 673 K and Pressures up to 4 MPa Measured Using a Dual-Capillary Viscometer

Viscosities of Liquid Hexadecane at Temperatures between 323 K and 673 K and Pressures up to 4 MPa Measured Using a Dual-Capillary Viscometer

Towards a Polymer-Brush-Based Friction Modifier for Oil

High-Pressure Liquid Viscosity of n-Hexadecane/ethyl Octanoate Mixtures

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