Influence of cooling rate and soap concentration on isothermal crystallization temperature of lithium greases

Podlennykh, L. V.; Іщук, Любов Петрівна

doi:10.1007/bf00725752

Cited by 1 publication

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“…Lithium greases are composed of a soap fiber network whose morphology strongly impacts the final performances in particular thermal and mechanical stabilities. − The structure of the network can be controlled using appropriate heating and cooling rates during the processes. The combination of short and long fibers provides interesting properties .…”

Section: Resultsmentioning

confidence: 99%

Monitoring Grease Production by Reaction Calorimetry and Thermoanalytical Methods as an Alternative to Dropping Point Determination

et al. 2017

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The present research work concerns the thermodynamic study of lithium grease production by reaction calorimetry. In addition, several thermoanalytical techniques, such as differential scanning calorimetry and rheology, were employed to highlight grease thermal events. The results showed that the cooling rate mainly controls the crystallization of soap fibers and the formulation influences the reaction heat of saponification. The liquid fraction method (LFM) has been evaluated for both simple and complex lithium greases as a substitution technique to dropping point. For lithium grease, the results showed a very good correlation between LFM data and standard dropping point measurements. On the other hand, the LFM method was not applicable to complex lithium soap for dropping point determination by DSC, while it was shown that shear strain sweep led to a good correlation with dropping point values.

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Section: Resultsmentioning

confidence: 99%