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Pyrylium- and Pyridinium-Based Ionic Liquids as Friction Modifiers for Greases
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2024-03-01 , DOI: 10.1021/acsami.4c01750
Miguel A Chacon-Teran 1 , Cinderella Moustafa 2 , Joanne Luu 1 , Ashlie Martini 2 , Michael Findlater 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2024-03-01 , DOI: 10.1021/acsami.4c01750
Miguel A Chacon-Teran 1 , Cinderella Moustafa 2 , Joanne Luu 1 , Ashlie Martini 2 , Michael Findlater 1
Affiliation
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The use of ionic liquids (ILs) as lubricants or additives has been studied extensively over the past few decades. However, the ILs considered for lubricant applications have been part of a limited structural class of phosphonium- or imidazolium-type compounds. Here, new pyrylium- and pyridinium-based ILs bearing long alkyl chains were prepared and evaluated as friction- and wear-reducing additives in naphthenic greases. The physical properties of the synthetic ILs and additized naphthenic grease were measured. The tribological performance of the greases was measured by using standard benchtop tests. The addition of ILs was detrimental to wear, causing an increase in the amount of material removed by sliding relative to the base greases in most cases. In contrast, the friction performance improved under nearly all conditions tested due to the IL additives. The compatibility of the synthetic ILs with the naphthenic greases and its potential influence upon miscibility and tribological performance are tentatively proposed to be a result of the molecular structure.
中文翻译：
作为润滑脂摩擦改进剂的吡啶鎓和吡啶鎓基离子液体
在过去的几十年里，人们对离子液体（IL）作为润滑剂或添加剂的使用进行了广泛的研究。然而，考虑用于润滑剂应用的离子液体一直是磷鎓或咪唑鎓型化合物的有限结构类别的一部分。在此，制备了带有长烷基链的新型吡喃鎓和吡啶鎓基离子液体，并对其作为环烷脂润滑脂中的减摩和磨损添加剂进行了评估。测量了合成 IL 和添加环烷脂的物理性能。通过使用标准台式测试来测量润滑脂的摩擦学性能。添加 IL 不利于磨损，在大多数情况下会导致相对于基础润滑脂滑动时去除的材料量增加。相比之下，由于 IL 添加剂，几乎所有测试条件下的摩擦性能均得到改善。合成离子液体与环烷润滑脂的相容性及其对混溶性和摩擦学性能的潜在影响被初步认为是分子结构的结果。
更新日期：2024-03-01
中文翻译：
作为润滑脂摩擦改进剂的吡啶鎓和吡啶鎓基离子液体
在过去的几十年里，人们对离子液体（IL）作为润滑剂或添加剂的使用进行了广泛的研究。然而，考虑用于润滑剂应用的离子液体一直是磷鎓或咪唑鎓型化合物的有限结构类别的一部分。在此，制备了带有长烷基链的新型吡喃鎓和吡啶鎓基离子液体，并对其作为环烷脂润滑脂中的减摩和磨损添加剂进行了评估。测量了合成 IL 和添加环烷脂的物理性能。通过使用标准台式测试来测量润滑脂的摩擦学性能。添加 IL 不利于磨损，在大多数情况下会导致相对于基础润滑脂滑动时去除的材料量增加。相比之下，由于 IL 添加剂，几乎所有测试条件下的摩擦性能均得到改善。合成离子液体与环烷润滑脂的相容性及其对混溶性和摩擦学性能的潜在影响被初步认为是分子结构的结果。
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