RHEOLOGICAL AND TRIBOLOGICAL PROPERTIES OF INDUSTRIAL OIL WITH MESOGENIC ADDITIVES AND CARBON NANOTUBES

Rheological and tribological testing of binary and ternary systems containing industrial oil I-20A with various additives was conducted. Analysis of tribological tests indicates that the cholesteric liquid crystals X-7 and X-20 with microaddition of CNT added to I-20A have good antifriction quality while X-7 and X-20 are effective anti-wear additives. Introduction of cholesteryl ester of stearic acid (X-7) additive to the industrial oil I20A, with different values of concentration, contributes to a significant increase in the levels of wear resistance of friction pairs. Rheological tests showed that introduction of nanotubes leads to a change in the ratio between the elastic and viscous components in favor of increasing of elastic properties of the sample that leads to a deterioration in tribological performance of the oil I-20A.