Effectiveness of glycerol-monooleate in high-performance polymer tribo-systems

High performance polymers possessing superior mechanical properties may replace metal components and improve machine efficiency. Successful replacement, however, relies on the compatibility of these with current engineering systems, including lubricants their additives. This study examines two high polymers, polyetheretherketone (PEEK) polyamide-imide (PAI), glycerol monooleate (GMO), an organic friction modifier (OFM) commonly used in steel-steel rubbing contacts. Friction tests were conducted a ball-on-disc geometry reciprocating motion at 100 °C polyalphaolefin (PAO) base oil. GMO reduces polymer-steel polymer-polymer When steel is involved, use oleic acid (OA) give similar coefficients. Since OA believed to be hydrolyzed product contacts, our results show that interaction controls contacts when additive. Results from FTIR Raman spectroscopies surfaces contain little no polymeric materials, nor iron oxides after against GMO- OA-containing PAO. supports OFM layers are formed surfaces. These prevent polymer transfer layer formation possibly protect oxidation. Our using interacts strongly can, contrary dry friction, eliminate need film for achieving low