The method of calculation for the adsorbed process in the small gaps of a liquid end of high pressure hydraulic actuators
Keywords:
adsorbed process, high pressure hydraulic actuators, rheological effects in the small gaps, high pressure rotary viscometerAbstract
In the article it is offered the method of quantitative description of adsorption process on
the surfaces in the small gaps of a liquid end of hydraulic apparatus. It is analyzed the influence
of adsorption on tribological properties of friction couples and the dependence of this process on
high pressure. The authors examined the mechanisms of formation of the adsorption films.
It is showed the ways of measuring by high pressure rotary viscometer of the working fluid parameters which are necessary to calculate the required input values. It is specified the benefits of
using by calculation the linear dimensions of the molecular chains which are solved by the relations of the Van der Waals volumes and the Van der Waals surface areas. It is described the algorithms for the calculation of the impact of highpressure on the values of the Van der Waals volumes, the Van der Waals surface areas and dependent on them parameters. The examples of
the calculation of dependence ofthe surfactant adsorption on working pressure are provided.
It is showed numerical relationship of the thickness of the adsorbed layer on changing of pressure
points. The method of the determination of physical and chemical transformations by values of
the dielectric relaxation time is described. This method allows the pressures points identified by
the rheological effects in the working environments. It is giving the example of the rheological
effect appearing in small gaps by the adsorbed layers. The experiments confirmed the phase and
structural transformations in small gaps of high pressure hydraulic actuators. The experiments
also proved the existence of described rheological effects in the gaps less than 10 micron for hydrocarbon liquids and default of these rheological effects in the volumes of identical hydrocarbon
environments by same pressures points. The obtained results were analyzed.
References
Garkunov D.N. Tribotekhnika. Iznosibezyznosnost' [Tribotechnology. Deterioration and Wearlessness]. Moscow, Moscow Agricultural Academy, 2001. 616 p.
Garkunov D.N. Tribotekhnika. Konstruirovaniye, izgotovleniye i ekspluatatsiya mashin [Tribotechnology. Design, Manufacture and Operation of the Machine]. Moscow, 2002. 632 p.
Langmuir I., Blodgett K.B. Über einige neueMethoden zur Untersuchung von monomolekularen Filmen. Kolloid Zeitschrift, 1935, vol. 73, ss. 257–263.
Freundlich H.M.F. Over the Adsorption in Solution. J. Phys. Chem., 1906, vol. A57, p. 385.
Gibbs J.W. A Method of Geometrical Representation of the Thermodynamic Properties of Substances by Means of Surfaces. Transactions of the Connecticut Academy, 1873, vol. II, pp. 382–404.
Levchenkov S.I. Fizicheskaya I kolloidnaya khimiya. Konspekt lektsiy.[Physical and Colloid Chemistry. Lecture notes. Part 4]. Rostov-on-Don, Publishing House of the Rostov State University, 2004, 31 p.
Zolotykh E.V. Issledovaniya v oblasti vysokikh davleniy [Research in the Field of High Pressure]. Moscow, Izdatelstvo standartov Publ., 1987. 303 p.
Akhmatov A.S. Molekulyarnaya fizika granichnogo treniya[Molecular Physics of Boundary Friction]. Moscow, Fizmatgiz Publ., 1963. 472 p.
Ershov B.I. [Leakage of Fluid in the Hydrostatic Units of Machines and Devices]. Vestnik mashinostroyeniya, 1987, no. 1, pp. 25–27. (in Russ.)
Askadskiy A.A., Kondrashenko V.I. Kompyuternoe materialovedenie polimerov. Tom 1. Atomno-molekulyarnyy uroven’ [Computational Materials Engineering for Polymers. Vol. 1. Atomic Molecular Level]. Moscow, Nauchnyy mir Publ., 1999. 544 p.
Tsiklis D.S. Tekhnika fiziko-khimicheskikh issledovaniy pri vysokikh davleniyakh[The Techniques for Physico-Chemical Studies at High Pressures]. Moscow, Khimiya Publ., 1965. 416 p.
Rednikov S.N., Naigert K.V. [Dependency of Internal Energy of One-Component Hydrocarbon System on the Particle Size when Reading the Viscosity Characteristics in High-Pressure Rotational Viscometer]. Bulletin PNIPU. Aerospace Equipment, 2014, no. 36, pp. 143–154. (in Russ.)
Motavkin A.V., Pokrovsky E.M., Skorodumov V.F. [The Determination of Rheological Parameters of Polymer Composites]. Vysokomolek. Soyed., 2005, vol. A47, no. 9, pp. 1728–1734. (in Russ.)
Skorodumov V.F., Pokrovsky E.M., MotavkinA.V. [The Thermodynamics of Polymers Melting by High Pressure]. Khimicheskiye volokna, 2005, no. 1, pp. 29–32. (in Russ.)
Yakhno O.M., Dubovitskiy V.F. Osnovy reologii polimerov [Rheological Fundamentals of Polymers]. Kiev, Vishchaya shkola Publ., 1976. 185 p.
Skorodumov V.A. [Thermodynamic Aspects of Vitrification under Pressure]. Journal of Physical Chemistry, 1994, vol. 68, no. 12, pp. 2254–2256. (in Russ.)
Naigert K.V., Rednikov S.N., Yaparova N.M. [The Processes of Polymerization of Working Fluidin the Gaps of Hydraulic Spool Couples]. Bulletin PNIPU. Aerospace Equipment, 2016, no. 46, pp. 172–190. (in Russ.) DOI: 10.15593/2224-9982/2016.46.10
Atanov Y.A. [The Relaxation of the Electric Polarization of the Plastic Polymethylat a Pressure up to 11 kBar]. ZHVS. Kratkiye soobshcheniya, 1970, no. 3, pp. 224–226. (in Russ.)
Sen M., Jiang N., Cheung J., Endoh M.K., Koga T., Kawaguchi D., Tanaka K. Flattening Process of Polymer Chains Irreversibly Adsorbed on a Solid. ACS Macro Lett., 2016, vol. 5 (4), pp. 504–508. DOI: 10.1021/acs macro lett.6b00169
Burke D.J., Puletti F., Woods P.M., Viti S., Slater B., Brown W.A. Adsorption and Thermal Processing of Glycolaldehyde, Methyl Formate,and Acetic Acid on Graphite at 20 K. J. Phys. Chem. A, 2015, vol. 119 (26), pp. 6837–6849. DOI: 10.1021/acs.jpca.5b04010
Zhang Q., Schimpf F., Lu H.-L., Lin D.-Q., Yao S.-J. Binary Adsorption Processes of Albumin and Immunoglobulin on Hydrophobic Charge-Induction Resins. Chem. Eng. Data, 2016, vol. 61 (3), pp. 1353–1360. DOI: 10.1021/acs.jced.5b01108
Kaloni T.P., Schreckenbach G., Freund M.S. Large Enhancement and Tunable Band Gap in Silicene by Small Organic Molecule Adsorption. J. Phys. Chem. C, 2014, vol. 118 (40), pp. 23361–23367. DOI: 10.1021/jp505814v
Peyghan A.A., Noei M., Tabar M.B. A large Gap Opening of Graphene Induced by the Adsorption of CO on the Al-Doped Site. J. Mol. Model, 2013, vol. 19, iss. 8, pp. 3007–3014. DOI: 10.1007/s00894-013-1832-x
Kalered E., Pedersen H., Ojamäe L., Janzén E. Adsorption and Surface Diffusion of Silicon Growth Species in Silicon Carbide Chemical Vapour Deposition Processes Studied by QuantumChemical Computations. Theor. Chem. Acc., 2013, vol. 132, p. 1403. DOI:10.1007/s00214-013-1403-3
Richter R., Mukhopadhyay A., Brisson A. Pathways of Lipid Vesicle Deposition on Solid Surfaces: A Combined QCM-D and AFM Study. Biophys J., 2003, vol. 85 (5), pp. 3035–3047. DOI: 10.1016/S0006-3495(03)74722-5
Cohen Stuart M.A. Adsorbed Polymers in Colloidal Systems: from Statics to Dynamics. Polymer Journal, 1991, vol. 23, pp. 669–682. DOI: 10.1295/polymj.23.669
Shayeganfa F. Energy Gap Tuning of Graphene Layers with Single Molecular F2 Adsorption. The Journal of Physical Chemistry C, 2015, vol. 119 (22), pp. 12681–12681. DOI: 10.1021/acs.jpcc.5b01560
Solimannejad M., Jouypazadeh H., Kamalinahad S., Noormohammadbeigi M. Adsorption of F–, Cl–, Li+ and Na+ on the Exterior Surface of Mg12O12Nanocage in the Gas Phase and Water Media:
A DFT Study. Phys. Chem. Res., 2016, vol. 4, no. 4, pp. 591–605. DOI: 10.22036/pcr.2016.16051
Karssemeijer L.J., Cuppen H.M. Diffusion-desorption ratio of adsorbed CO and CO2 on water ice. J. Astronomy &Astrophysics, 2014, vol. 569, pp. 1–4. DOI: 10.1051/0004-6361/201424792
Dzade N.Y., Roldan A., de Leeuw N.H. A Density Functional Theory Study of the Adsorption of Benzene on Hematite (α-Fe2O3) Surfaces. J. Minerals, 2014, vol. 4, pp. 89–115. DOI: 10.3390/min4010089
Wang W., Zhang Y., Shen C., Chai Y. Adsorption of CO molecules on doped graphene: A firstprinciples study. AIP Advance,2016, vol. 6, no. 2, pp. 0253171–0253178. DOI: 10.1063/1.4942491
Gray J.J., Klein D.H., Korgel B.A., Bonnecaze R.T. Microstructure Formation and Kinetics in the Random Sequential Adsorption of Polydisperse Tethered Nanoparticles Modeled as Hard Disks.
J. Langmuir, 2001, vol. 17(8), pp. 2317–2328. DOI: 10.1021/la001029j
Ni Z., Zhong H., Jiang X., Quhe R., Luo G., Wang Y., Ye M., Yang J., Shi J., Lu J. Tunable Band Gap and Doping Type in Silicene by Surface Adsorption: Towards Tunneling Transistors. Nanoscale, 2014, vol. 6 (13), pp. 7609–7618. DOI: 10.1039/c4nr00028e
Lavrik N.V., Sepaniak M.J., Datskos P.G. Cantilever Transducers as a Platform for Chemical and Biological Sensors. Review of scientific instruments, 2004, vol. 75 (7). pp. 2229–2253. DOI: 10.1063/1.1763252
Wang Z.L. Zinc Oxide Nanostructures:Growth, Properties and Applications. Journal of physics: condensed matter, 2004, vol. 16, pp. 829–858. DOI: 10.1088/0953-8984/16/25/R01
Wu X., Zeng X.C. Adsorption of Transition-Metal Atoms on Boron Nitride Nanotube: A Density-Functional Study. The Journal of Chemical Physics, 2006, vol. 125. DOI: 10.1063/1.2218841
