Synthesis of Oil Miscible Novel Silane Functionalised Imidazoline-Based ILs as Lubricant Additives: Characterization and Tribological Evaluations

Abstract The present study investigated the synthesis of novel, oil miscible, multifunctional, silane functionalized imidazoline-based ionic liquids (ILs) with an emphasis towards halogen, sulfur and phosphorous free lubricant additives to replace conventional (ZDDP, MoDTC, etc.), for which there are environmental concerns. These ILs were prepared in different concentrations proved be miscible a short time. This stability was improved over year using sorbitan trioleate as emulsifier additive. performed well reducing friction wear when on steel-steel contacts at 5 wt% concentration, improvements TPEIPS BEHP containing blend up 39% 53%, respectively, compared base oil. SEM EDS analysis shows oxygen rich tribo-film formation this combinations. further tested determine their effect properties such viscosity, thermal stability, elastomeric antifoaming compatibility. new work discovery environmentally friendly tribological processes.