The Effect of Surfactants With Steric Hindrance On the Physicochemical and Tribological Properties Of Metalworking Fluids

Abstract

In earlier studies, it has been postulated that solutions of surfactants should be used as an original solution for formulation of Metal Working Fluids (MWF) compositions. The negative feature of some of the fluids was their excessive foamability whose reduction, by introducing hydrophobic foam inhibitors, was limited. Therefore, a synthesis of new oxyalkylated derivatives of 2-ethylhexyl alcohol and sulfosuccinate obtained from this alcohol was planned. Due to steric hindrance, these compounds exhibit low foamability. Aqueous solutions of these surfactants were subjected to physicochemical and tribological tests.

Ecological Cutting Fluids

“…The analysis of aqueous solutions of surfactants indicates that they have not been included in any of the presented types of working fluids. In view of the possible application of aqueous surfactant solutions as lubricants, which was documented in numerous publications [ 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ], it was proposed to create two new groups termed surfactant working fluids (SWFs) and surfactant lubricants (SLs). The aims of the introduction of this new classification (SWFs and SLs) are to avoid ambiguity in the description and to create a basis for a targeted development of this type of working and hydraulic fluids and, in the long term, a different group of lubricants.…”