Studies on competitive interactions and blending order of engine oil additives by variable temperature 31p-nmr and ir spectroscopy

Tribology Transactions

Volumn 42, Issue 4, 1999, Pages 807-812

  Kapur, G S ^a   Chopra, A ^a   Sarpal, A S ^a   Ramakumar, S S V ^a   Jain, S K ^a  

^a INDIAN OIL CORPORATION LIMITED   (India)

Author keywords

Additive interaction; Dispersants

Indexed keywords

INFRARED SPECTROSCOPY; NUCLEAR MAGNETIC RESONANCE; PARAFFIN OILS; TRIBOLOGY; VISCOSITY; ZINC COMPOUNDS;

ENGINE OIL ADDITIVES;

ADDITIVES;

ADDITIVE; ENGINE OIL; INTERACTION;

EID: 0033238192     PISSN: 10402004     EISSN: 1547397X     Source Type: Journal    
DOI: 10.1080/10402009908982287     Document Type: Article

References (14)

1. Spikes, H. A., “Additive-Additive and Additive-Surface Interactions in Lubrication,” Lubr. Sci., 2, 3, (1989).
2. Inoue, K. and Wantanabe, H., “Interactions of Engine Oil Additives,” ASLÈ Trans., 26, p 189,(1983).
3. Hsu, S. M., Pei, P. and Ku, C. S., “Mechanism of Additive Effectiveness,” Lubr. Sci.t l, p 165,(1989).
4. Rounds, F. G., “Changes in Friction and Wear Performance Caused by Interactions Among Lubricant Additives,” Lubr. Sci., 1, p 333, (1989).
5. Kulp, M. J., Gundic, D. T., Hanna, M. E. and Fabian, L. E., “Zincdialkyl-dithiophosphate-Dispersant Interactions: Effect on Solution Behavior and Wear," SAE 922282, p 1558, (1992).
6. Tong, P., Witten, T. A., Huang, J. S. and Fetters, L. J., “Interactions in Mixtures of Colloid and Polymer," Jour. Phys. France, 7, p 2614, (1991).
7. Papke, B. L., Bartley, L. S. and Migdal, C. A., “Adsorption of Poiy (Isobutylene) Succinimide Dispersants Onto Calcium Alkylarylsulfonate Dispersions in Hydrocarbon Media,” Langmuir, 7, p 2614, (1991).
8. Papke, B. L. and Rubin, I. D., “Detergent-polymer Interactions in Hydrocarbon Solvents: A Viscometric Study,” SAE 922281, (1992).
9. Ramakumar, S. S. V., Aggarwal, N., Rao, A. M., Sarpal, A. S., Srivastava, S. P. and Bhatnagar, A. K., “Studies on Additive-Additive Interactions: Effect of Dispersant and Anti-oxidant Additives on the Synergistic Combination of Overbased Sulfonate and ZDDP,” Lubr. Sci., 7, p 25, (1994).
10. Ramakumar, S. S. V., Bhatnagar, A. K., Kapur, G. S., Kumar, A., Rao, A. M. and Srivastava, S. P., “ZDDP Response in Varying Hydrocarbon Composition of Base Oils of Multicomponent Systems-A Tribological View of Additive Interactions,” in Proc. 10th Int'l. Colloquium on Tribology-Soiving Friction and Wear Problems, Germany, 2, Bartz, W. J., Ed., pp 11-31, (1996).
11. Gallopoulos, N. E. and Murphy, C. K., “Interactions Between a Zinc Dilkyl-phosphorodithioate and Lubricating Oil Dispersants,” ASLE Trans., 14, 1, (1970).
12. Habeeb, J., Rogers, W. N. and May, C. J., “The Role of Hydroperoxide in Engine Wear and the Effect of ZnDDP/Dispersant/Detergent Interactions,” SAE Paper No: 872157.
13. Fang, H. L. and Millar, J. M., “Characterization of the Dimer Formation of ZDDP Neutral Salt,” in Proc. 14th Int’l. Symp. Performance Evaluation of Automotive Fuels and Lubricants, Birmingham, UK, CEC/93/EL15, (1993).
14. Yamaguchi, E. S., Ryason, P. R., Labrador, E. Q. and Hansen, T. P, “Comparison of the Relative Wear Performance of Neutral and Basic ZnDTP Salts,” Trib. Trans., 39, 1, p 220, (1996).