Tribological Properties and Lubrication Mechanism of New Phosphorus-Free Benzothiazole Organomolybdenum Friction Modifiers

IF 3.3 3区工程技术 Q2 ENGINEERING, CHEMICAL

Tribology Letters Pub Date : 2025-08-11 DOI:10.1007/s11249-025-02055-3

Jing Qin, Sujie Jia, Hualin Lin, Sheng Han

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引用次数: 0

Abstract

Benzothiazole is widely used in biomedical applications in recent studies, in this study we coordinated it with organic molybdenum to prepare three phosphorus-free benzothiazole-organic molybdenum friction modifiers with different structures and evaluated the lubrication performance in base oil PAO6. The results showed that the three additives exhibited different friction reduction and anti-wear effects due to their different molecular structures, with benzothiazole-molybdenum oleate amide (YSMo) showing the most significant lubrication performance. At 1.00 wt%, YSMo reduced the average coefficient of friction by 30.8% and the wear volume by 95.86%. The combination of sulfur-containing nitrogen heterocyclic compounds with molybdenum source significantly enhanced the lubrication performance and effectively reduced friction and wear through physical adsorption and the formation of a dense composite chemical friction protective film (containing components such as FeS, MoO₃, and MoS₂), which further confirmed that friction-generated MoS₂ has a positive effect on the tribological performance. The lubrication performance of YSMo was superior to that of the other two additives, which depended on the polar groups and chain lengths, which provides an important theoretical basis for further optimizing the design of lubricating additives.

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新型无磷苯并噻唑类有机钼摩擦改进剂的摩擦学性能及润滑机理

苯并噻唑在近年来的研究中广泛应用于生物医学领域，本研究将其与有机钼配合制备了三种不同结构的无磷苯并噻唑-有机钼摩擦改性剂，并对其在基础油PAO6中的润滑性能进行了评价。结果表明，三种添加剂由于其分子结构的不同，表现出不同的减摩抗磨效果，其中以苯并噻唑-油酸钼酰胺（YSMo）的润滑效果最为显著。在1.00 wt%时，YSMo的平均摩擦系数降低了30.8%，磨损体积降低了95.86%。含硫氮杂环化合物与钼源结合，通过物理吸附，形成致密的复合化学摩擦保护膜（含FeS、MoO3、MoS2等成分），显著提高了润滑性能，有效降低了摩擦磨损，进一步证实了摩擦产生的MoS2对摩擦学性能有积极作用。YSMo的润滑性能优于其他两种添加剂，这取决于极性基团和链长，为润滑添加剂的进一步优化设计提供了重要的理论依据。

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来源期刊

Tribology Letters 工程技术-工程：化工

CiteScore

5.30

自引率

9.40%

发文量

116

审稿时长

2.5 months

期刊介绍： Tribology Letters is devoted to the development of the science of tribology and its applications, particularly focusing on publishing high-quality papers at the forefront of tribological science and that address the fundamentals of friction, lubrication, wear, or adhesion. The journal facilitates communication and exchange of seminal ideas among thousands of practitioners who are engaged worldwide in the pursuit of tribology-based science and technology.