Contact
    Start Publications High performance lubricants prepared from ...
    ←  Publication Finder
    QSense

    High performance lubricants prepared from Naphthalene-1,4,5,8-Tetracarboxylic acid: Synthesis, physicochemical and Tribological properties

    Year: 2021

    Journal: J. Mol. Liq., Volume 330, MAY 15

    Authors: Hu, Chenghong; He, Xi; Han, Yunyan; Ye, Xiangyuan; Fan, Mingjin; Zhou, Feng; Liu, Weimin

    Organizations: NSFC [51675006, 51805007]; open fund of the State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics [LSL-1812]

    Keywords: Naphthalene-1,4,5,8-tetracarboxylic acid; Synthetic ester; Tribological property; Lubricant

    Ester oils (1,4,5,8-4C(n)) were synthesized through esterification of naphthalene-1,4,5,8-tetracarboxylic acid with aliphatic alcohols. The molecular structures were confirmed with H-1 NMR, C-13 NMR, FT-IR and elemental analysis. Their KV, VI, FP, PP, oxidation and thermal stabilities, friction reducing and anti-wear performances were measured. The results demonstrate that the 1,4,5,8-4C(n) have obviously higher thermal and oxidation stabilities than the existing esters DOS, PIS and Phe-3C(i8). They also have predominant tribological behavior at both 50 degrees C and 120 degrees C. Analyzing from the results of ECR, QCM and XPS, it could be concluded that strongly and orderly physicochemical adsorption of the 1,4,5,8-4C(n) molecules on the sliding surfaces is the critical factor for these oils to demonstrate excellent tribological performance for steel contacts. (C) 2021 Elsevier B.V. All rights reserved.
    View publication