Results 181 to 190 of about 957 (204)

Contribution of Phosphorus to the Antiwear Performance of Zinc Dialkyldithiophosphates

A S L E Transactions, 1985
Four-ball wear studies show that the antiwear (low load) performance of zinc dialkyldithiophosphates (ZDPs) can be duplicated by combining a dialkyl acid phosphate and a soluble zinc compound. Antiwear performance of acid phosphates was independent of chain length for C8 to C18 but affected by chain branching and ring substitution.
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Preparative isolation and characterization of zinc dialkyldithiophosphates from commercial antiwear additives

Journal of Separation Science, 2003
AbstractAn automated HPLC separation methodology was developed for the preparative separation of ZnDTP components from commercial lubricant antiwear additives. Using silica columns that can be reactivated by elution with appropriate solvents, gram quantities of additives can be isolated.
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Dispersant Effects on Zinc Dialkyldithiophosphate (ZDDP) Tribofilm Structure and Composition

2015
VCU Theses and ...
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Interaction of zinc dialkyldithiophosphates with detergent/dispersant additives

Chemistry and Technology of Fuels and Oils, 1980
N. A. Kudryavtseva, A. A. Fufaev, S. B. Borshchevskii   +2 more
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Determination of zinc dialkyldithiophosphate additives in lubricating oil by photometric titration

The Analyst, 1984
A photometric titration, using p-dimethylaminophenylmercury(II) acetate with Michler's thioketone as indicator, is described for the determination of zinc dialkyldithiophosphates in lubricating oils. The method is simple, rapid, reproducible and accurate and samples do not require separation or other preliminary stages prior to their analysis.
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Isolation and Chemical Characterization of a Zinc Dialkyldithiophosphate-Derived Antiwear Agent

A S L E Transactions, 1986
A secondary-alkyl zinc dialkyldithiophosphate (ZDP) was thermally decomposed in the presence of air. The resulting precipitate, when blended in a base grease, demonstrated better antiwear performance in a 4-ball wear machine than the parent additive. When extracted with acetone, a white powder with excellent antiwear properties was obtained from the ...
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Interrelation of efficiency and thermal stability of zinc dialkyldithiophosphates

Chemistry and Technology of Fuels and Oils, 1992
S. D. Likhterov, G. I. Shor, A. A. Fufaev, G. G. Kotova   +3 more
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Synergistic Effects Between Phosphonium‐Alkylphosphate Ionic Liquids and Zinc Dialkyldithiophosphate (ZDDP) as Lubricant Additives

Advanced Materials, 2015
Jun Qu, Huimin Luo, Harry M Meyer
exaly  

Tribological performance of an Al—Si alloy lubricated in the boundary regime with zinc dialkyldithiophosphate and molybdenum dithiocarbamate additives

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2008
Anne Neville, Martin Priest
exaly  

Synergistic Effects between Plasma-Nitrided AISI 52100 Steel and Zinc Dialkyldithiophosphate Additive under Boundary Lubrication

Tribology Transactions, 2012
Wen Yue
exaly