Compressibilities and viscosities of reference and vegetable oils for their use as hydraulic fluids and lubricants

Regueira, Teresa; Lugo, Luis; Fandiño, Olivia; López, Enriqueta R.; Fernández, Josefa

doi:10.1039/c0gc00597e

Cited by 56 publications

(71 citation statements)

References 55 publications

(46 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Both thermophysical properties, a p and j T , present the same behavior for the three PAGs studied in our laboratory [33]. Owing to the possible interest of PAGs as hydraulic fluids, we have also compared the value of the isothermal compressibility with other hydraulic fluids studied in our laboratory [43]. We can see that the behavior of the isothermal compressibility of PAG1 to PAG3 is similar to the reference mineral oil MIN-H02 used as hydraulic fluid which has the highest value of the analyzed oils.…”

Section: Densitymentioning

confidence: 80%

Pressure–Viscosity Coefficients for Polyalkylene Glycol Oils and Other Ester or Ionic Lubricants

et al. 2011

View full text Add to dashboard Cite

We present in this article new viscosity and density data for polypropylene glycol monomethyl ether, which completes a series of articles where we have published dynamic viscosity data of poly(propylene glycol) dimethyl ethers, dipentaerythritol esters, and pentaerythritol esters. New dynamic viscosity measurements up to 60 MPa at five temperatures in the range of 303.15-373.15 K, and density values at temperatures ranging from 298.15 to 398.15 K up to 60 MPa are reported in addition to other physical properties that affect the behavior of the fluids in elastohydrodynamic lubrication regime, such as the viscosity index value, VI, the universal pressure-viscosity coefficient, a film , and the temperature-viscosity coefficient, b. The experimental measurements were performed using a rotational automated viscometer Anton Paar Stabinger SVM3000, a rolling-ball viscometer Ruska 1602-830 for high pressures, and an automated Anton Paar DMA HPM vibrating-tube densimeter. Together with these data, we also present a comparison of the film-generating capability for the fluids above mentioned as well as for other five ionic liquids. We analyze the dependence of the molecular structure on the lubrication properties of these oils, which can help the lubricant engineers to develop products with enhanced performance.

show abstract

Section: Densitymentioning

confidence: 80%

Pressure–Viscosity Coefficients for Polyalkylene Glycol Oils and Other Ester or Ionic Lubricants

et al. 2011

View full text Add to dashboard Cite

show abstract

“…High VI are also found for hydraulic fluids as PAGs or vegetable oils; thus, Paredes et al . have reported a VI of 220 for a PAG, and Regueira et al . reported a value of 203 for a high‐oleic sunflower base oil.…”

Section: Resultsmentioning

confidence: 99%

“…We have compared in Figure compressibility values of the ILs from Table with water as well as with several hydraulic lubricants, two mineral lubricants MIN‐H01 and MIN‐H02, two synthetic lubricants, a dimethoxy end‐capped poly(propylene glycol) PAG1 and a dipentaerythritol hexaheptanoate DiPEC7, a vegetable‐based oil HOSO‐B and a developed biodegradable lubricant based in high‐oleic sunflower oil, BIO‐H01…”

Section: Resultsmentioning

confidence: 99%

“…In hydraulic systems that operate at high pressure, fluids with low compressibility (high bulk modulus) are required to transmit power efficiently. ILs are mainly characterised by their low isothermal compressibility, which is usually lower (being in some cases up to the half) than those of the current reference mineral and synthetic hydraulic oils . Compressibility has significant effects on high‐pressure fluid systems.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ionic liquids as hydraulic fluids: comparison of several properties with those of conventional oils

Regueira

Lugo

Fernández

2013

Lubrication Science

Self Cite

View full text Add to dashboard Cite

Ionic liquids possess several remarkable properties that make them striking for their use as lubricants for different applications. Isothermal compressibility (or bulk modulus) is a fundamental parameter in the hydraulic fluids field. Therefore, an analysis of the compressibility of different ionic liquids, mineral, synthetic and vegetable oils, as well as water, is presented in this work. Furthermore, thermal expansion coefficient, viscosity and viscosity index of these fluids are also analysed. Copyright © 2013 John Wiley & Sons, Ltd.

show abstract

“…They concluded that their ILs, except for [P 6,6,6,14 ][(C 2 F 5 ) 3 PF 3 ], show lower j T values than those of the mineral and synthetic lubricants and also lower than that of the biodegradable oils, which translates into higher power efficiency [8] SO 3 ] also show low j T values, therefore they could be also suitable as hydraulic fluids. As an example, in figure 5, isothermal compressibility is plotted as a function of pressure at T = 313.15 K for ILs of this work, other ILs previously measured in our laboratory [14,30,31] and two reference hydraulic fluids [64]. where V is the molar volume of the fluid.…”

Section: Pyrr][b(cn) 4 ] [C 4 C 1 Pyrr][cf 3 -So 3 ] [C 4 C 1 Pmentioning

confidence: 99%

Volumetric behaviour of six ionic liquids from T = (278 to 398) K and up to 120 MPa

Gaciño

Regueira

Bolotov

et al. 2016

The Journal of Chemical Thermodynamics

Self Cite

View full text Add to dashboard Cite

Compressibilities and viscosities of reference and vegetable oils for their use as hydraulic fluids and lubricants

Cited by 56 publications

References 55 publications

Pressure–Viscosity Coefficients for Polyalkylene Glycol Oils and Other Ester or Ionic Lubricants

Pressure–Viscosity Coefficients for Polyalkylene Glycol Oils and Other Ester or Ionic Lubricants

Ionic liquids as hydraulic fluids: comparison of several properties with those of conventional oils

Volumetric behaviour of six ionic liquids from T = (278 to 398) K and up to 120 MPa

Contact Info

Product

Resources

About