Abstract A novel and simple method for the preparation of two-component gel lubricant and some evaluation of its physicochemical and lubricating properties are reported. The addition of two-component gelator including bis(2-ethylhexyl) sulfosuccinate and cholesterol to white oil can result in self-assembly to form a gel. The gelation mechanism was characterized by the combination of atomistic molecular dynamics simulation and experiment. It not only has excellent thermal stability, but also possesses thermal reversibility, creep recovery and thixotropic properties. Noticeably, the gel can significantly enhance lubricous and AW performances of base oil. Obtained by FIB-TEM, EDS, XPS and QCM characterization, we speculate that the gelator forms an effective adsorption and tribochemical reaction film, so it can protect the contact surface from being worn.

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双组分胆固醇基超分子凝胶润滑剂的凝胶机理及摩擦学性能

摘要 报道了一种新型、简单的双组分凝胶润滑剂的制备方法及其理化和润滑性能的评价。将包括双(2-乙基己基)磺基琥珀酸酯和胆固醇的双组分凝胶剂添加到白油中可导致自组装形成凝胶。采用原子分子动力学模拟与实验相结合的方法表征了凝胶化机理。它不仅具有优异的热稳定性，而且还具有热可逆性、蠕变恢复和触变性。值得注意的是，该凝胶可以显着提高基础油的润滑性能和 AW 性能。通过 FIB-TEM、EDS、XPS 和 QCM 表征，我们推测凝胶剂形成了有效的吸附和摩擦化学反应膜，