On the Required Energy to Break Down the Thickener Structure of Lubricating Greases

References

• American Society for Testing and Materials (1991), ASTM Standard D2 17-88, Standard Test Methods for Cone Penetration of Lubricating Grease. Annual Book of ASTM Standards, American Society for Testing and Materials: Philadelphia, PA.
   Google Scholar
• Zhou, Y., and Lugt, P. M. (2019), “On the Application of the Mechanical Aging Master Curve for Lubricating Greases to Rolling Bearings,” Tribology International, 141, pp 105918. doi:10.1016/j.triboint.2019.105918
   Web of Science ®Google Scholar
• Meijer, R. J., and Lugt, P. M. (2022), “The Grease Worker and Its Applicability to Study Mechanical Aging of Lubricating Greases for Rolling Bearings,” Tribology Transactions, 65, pp 32–45. doi: doi:10.1080/10402004.2021.1979151.
   Web of Science ®Google Scholar
• Zhou, Y., Bosman, R., and Lugt, P. M. (2019), “A Master Curve for the Shear Degradation of Lubricating Greases with a Fibrous Structure,” Tribology Transactions, 62, pp 78–87. doi:10.1080/10402004.2018.1496304
   Web of Science ®Google Scholar
• Moore, R. J., and Cravath, A. M. (1951), “Mechanical Breakdown of Soap-Base Greases,” Industrial & Engineering Chemistry, 43, pp 2892–2897. doi: doi:10.1021/ie50504a064.
   Web of Science ®Google Scholar
• Lugt, P. M. (2013), Grease Lubrication in Rolling Bearings, 1st ed., John Wiley & Sons, Ltd., The Atrium: Chichester, UK. doi: doi:10.1002/9781118483961.
   Google Scholar
• Acar, N., Franco, J. M., and Kuhn, E. (2020), “On the Shear-Induced Structural Degradation of Lubricating Greases and Associated Activation Energy: An Experimental Rheological Study,” Tribology International, 144, pp 106105. doi:10.1016/j.triboint.2019.106105
   Web of Science ®Google Scholar
• Osara, J. A., and Bryant, M. D. (2019), “Thermodynamics of Grease Degradation,” Tribology International, 137, pp 433–445. doi:10.1016/j.triboint.2019.05.020
   Web of Science ®Google Scholar
• Rezasoltani, A., and Khonsari, M. M. (2014), “On the Correlation between Mechanical Degradation of Lubricating Grease and Entropy,” Tribology Letters, 56, pp 197–204. doi: doi:10.1007/s11249-014-0399-8. doi:http://dx.doi.org/10.1007/s11249-014-0399-8.
   Web of Science ®Google Scholar
• Chatra, K. R. S., Osara, J. A., and Lugt, P. M. (2023), “Thermo-Mechanical Aging during Churning in Grease Lubricated Bearings and Its Impact on Grease Life,” Tribology International, 181, pp 108248. doi:10.1016/j.triboint.2023.108248
   Web of Science ®Google Scholar
• Kuhn, E. (2009), Zur Tribologie der Schmierfette: Eine energetische Betrachtungsweise des Reibungs-und Verschleißprozesses, Renningen: Expert Verlag.
   Google Scholar
• Tachibana, T., and Kambara, H. (1969), “Studies of Helical Aggregates of Molecules. I. Enantiomorphism in the Helical Aggregates of Optically Active 12-Hydroxystearic Acid and Its Lithium Salt,” Bulletin of the Chemical Society of Japan, 42, pp 3422–3424. doi:10.1246/bcsj.42.3422
   Web of Science ®Google Scholar
• Sathwik Chatra, K. R., and Lugt, P. M. (2020), “Channeling Behavior of Lubricating Greases in Rolling Bearings: Identification and Characterization,” Tribology International, 143, pp 106061. doi: doi:10/gh637z. doi:10.1016/j.triboint.2019.106061
   Web of Science ®Google Scholar
• Yang, H.-K., Zhang, C., He, X.-N., and Wang, P.-Y. (2021), “Effects of Alkyl Chain Lengths on 12-Hydroxystearic Acid Derivatives Based Supramolecular Organogels,” Colloids and Surfaces A: Physicochemical and Engineering Aspects, 616, pp 126319. doi:10.1016/j.colsurfa.2021.126319
   Web of Science ®Google Scholar
• Wilkinson, J., Wilkinson, M., and Nolan, S. J. (2015), “Challenging Conventional Wisdom: Is 12-Hydroxystearic Acid the Best Fatty Acid for Making High Dropping Point Lithium Greases?,” ELGI Spokesman, 1, pp 25–30.
   Google Scholar
• Si, R., Ren, Q., He, Y., and Long, J. (2023), “Molecular Self-Assembling Structure and Formation Mechanism of Lubricating Grease: A Computational Simulation Approach,” Tribology International, 179, pp 108150. doi: doi:10.1016/j.triboint.2022.108150.
   Web of Science ®Google Scholar
• Chattopadhyay, S., Tobias, H. J., and Ziemann, P. J. (2001), “A Method for Measuring Vapor Pressures of Low-Volatility Organic Aerosol Compounds Using a Thermal Desorption Particle Beam Mass Spectrometer,” Analytical Chemistry, 73, pp 3797–3803. doi: doi:10.1021/ac010304j.
   PubMed Web of Science ®Google Scholar
• NIST (2023), “Lithium-12-Hydroxy Stearate.” Available at: https://webbook.nist.gov/cgi/cbook.cgi?Formula=C18H35LiO3 (accessed May 16, 2023).
   Google Scholar
• Zhou, Y., Bosman, R., and Lugt, P. M. (2018), “A Model for Shear Degradation of Lithium Soap Grease at Ambient Temperature,” Tribology Transactions, 61, pp 61–70. doi: doi:10.1080/10402004.2016.1272730.
   Web of Science ®Google Scholar
• Hogenberk, F., Osara, J. A., van den Ende, D., and Lugt, P. M. (2022), “On the Evolution of Oil-Separation Properties of Lubricating Greases under Shear Degradation,” Tribology International, 179, pp 108154. doi:10.1016/j.triboint.2022.108154
   Web of Science ®Google Scholar
• Barnes, H. A. (2000), A Handbook of Elementary Rheology, University of Wales Institute of Non-Newtonian Fluid Mechanics: Aberystwyth, UK.
   Google Scholar
• Einstein, A. (1905), Eine neue Bestimmung der Moleküldimensionen [Doctoral Thesis, ETH Zurich].
   Google Scholar
• Abraham, S., Lan, Y., Lam, R. S. H., Grahame, D. A. S., Kim, J. J. H., Weiss, R. G., and Rogers, M. A. (2012), “Influence of Positional Isomers on the Macroscale and Nanoscale Architectures of Aggregates of Racemic Hydroxyoctadecanoic Acids in Their Molecular Gel, Dispersion, and Solid States,” Langmuir, 28, pp 4955–4964. doi:10.1021/la204412t
   PubMed Web of Science ®Google Scholar
• Forster, E. O., Kolfenbach, J. J., and Leland, H. L. (1956), “Fibers, Forces and Flow,” NLGI Spokesman, 20, pp 16–22.
   Google Scholar
• Paszkowski, M., and Olsztyńska-Janus, S. (2014), “Grease Thixotropy: Evaluation of Grease Microstructure Change Due to Shear and Relaxation,” Industrial Lubrication and Tribology, 66, pp 223–237. doi: doi:10.1108/ILT-02-2012-0014.
   Web of Science ®Google Scholar