Organic friction modifiers (OFMs) are widely added to oil to reduce the boundary friction in many kinds of lubricants such as vehicle engine oils. At the contact area in machine elements, the OFMs form a self-assembled organic monolayer. Although the friction properties of the monolayer are widely studied on a molecular level, the formation process is not well-known. In this study, the initial adsorbing process of additive molecules in explicit base oil molecules are calculated using molecular dynamics. The adsorption time depends on the structure of the base oils. Another effect of the base oil other than "chain matching" is found.

中文翻译：

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利用分子动力学了解基础油对有机添加剂物理吸附过程的影响

有机摩擦改性剂 (OFM) 被广泛添加到油中，以减少多种润滑剂（例如车辆发动机油）中的边界摩擦。在机器元件的接触区域，OFM 形成自组装有机单层。尽管在分子水平上对单层的摩擦性能进行了广泛的研究，但其形成过程并不为人所知。本研究利用分子动力学计算了添加剂分子在显式基础油分子中的初始吸附过程。吸附时间取决于基础油的结构。发现了除“链匹配”之外的基础油的另一个作用。