The aim of this paper is to understand the soot dispersion mechanism in used lubricants. The efficiency of dispersant additives and polymers on particle stabilization in a lubricating oil is investigated by adsorption and sedimentation experiments. Carbon black particles are chosen as a model for soot present in lubricants. Comparison between diesel soot and carbon black, using Transmission Electronic Microscopy photographs, shows that both kind of particles exhibit a fractal structure with similar aggregate size. Sedimentation experiments in oil show that polymers and ashless dispersants stabilize particles over a critical concentration. Adsorption isotherms in oil are carried out in order to determine the action mechanism of dispersant against particles aggregation


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    Title :

    Adsorption of Engine Lubricant Dispersants and Polymers Onto Carbon Black Particles


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    CEC/SAE Spring Fuels & Lubricants Meeting & Exposition ; 2000



    Publication date :

    2000-06-19




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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