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torque for TTT and average COF for TCT. The TTT results clearly show the PE reduces the torque and is the optimal lubricity additive for this test method.


There is little difference in torque for VO or BE in any of the tricomponent blends.


Alternatively, the TCT response plot shows multiple interactions between all three additives. The interaction of the BE and PE is the most significant factor, however, there is no clear trend for any single additive as with the TTT.


The optimised additive composition that gives the lowest predicted average COF was determined to be 5.85% VO, 12.16% BE and 1.99% PE.


Ultimately, this study revealed there is no direct correlation between the TTT and TCT results. These findings show that when designing lubricity additives, knowledge of the end-use application is critical for formulation optimisation.


The TCT results also highlight that the evaluation of a single lubricity additive is insufficient, as the interactions between other additives are essential to reaching the ideal lubricity performance.


The high-precision ability of each test method makes both the TCT and TTT excellent evaluation tools for MWFs.


Formulators today desire lubricity additives that are effective in various applications and fluid types. By using both the TCT and TTT methods, lubricity additives’ performance ranges can be determined, leading to the development of optimal MWFs.


LINKS www.ingevity.com www.sealandchem.com


sealandchem.com | ingevity.com


THE RIGHT PARTNERSHIP. THE RIGHT PRODUCTS. THE RIGHT FORMULA FOR SUCCESS.


Sea-Land Chemical Europe Ltd. is an authorised distribution partner with Ingevity for high-quality specialty additives for lubricant applications.


Diacid 1550™ . Altapyne® L-1 . Altapyne L-5 . Altapyne D 25-30


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