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Tribological properties of hexagonal boron nitride nanoparticles or graphene nanoplatelets blended with an ionic liquid as additives of an ester base oil
Lubrication Science ( IF 1.9 ) Pub Date : 2021-05-10 , DOI: 10.1002/ls.1543
José M. Liñeira del Río 1 , Enriqueta R. López 1 , David E. P. Gonçalves 2 , Jorge H. O. Seabra 3 , Josefa Fernández 1
Affiliation  

Antifriction synergies between an ionic liquid (IL) and nanopowders as additives of an ester base oil were analysed at rolling conditions. For this aim, two nanodispersions based on hybrid combinations of hexagonal boron nitride nanoparticles (h-BN) or graphene nanoplatelets (GnP) with tri(butyl) ethylphosphonium diethylphosphate ionic liquid as additives in triisotridecyltrimellitate (TTM) base oil and the mixture of TTM and IL were analysed using two tribometer techniques. Film thickness characterisation and tribological tests were performed at rolling conditions [5% slide-roll-ratio (SRR)], under 50N and at operating temperatures of 30, 50 and 80°C. Stribeck curves showed that friction coefficients for the prepared lubricants are lower than those found for the TTM, being the best friction behaviour for the hybrid GnP nanolubricant. Furthermore, friction torque loss tests were performed in rolling ball bearings, observing that for the two hybrid nanolubricants lower friction torque values were obtained.

中文翻译:

六方氮化硼纳米颗粒或石墨烯纳米片与作为酯基油添加剂的离子液体混合的摩擦学特性

在轧制条件下分析了离子液体 (IL) 和作为酯基础油添加剂的纳米粉末之间的减摩协同作用。为此,基于六方氮化硼纳米颗粒 (h-BN) 或石墨烯纳米片 (GnP) 与三(丁基)乙基磷鏻二乙基磷酸离子液体的混合组合的两种纳米分散体作为偏苯三酸三异十三烷基酯 (TTM) 基础油中的添加剂以及 TTM 和IL 使用两种摩擦计技术进行分析。薄膜厚度表征和摩擦学测试在轧制条件 [5% 滑动辊比 (SRR)]、50N 和 30、50 和 80°C 的工作温度下进行。Stribeck 曲线表明,制备的润滑剂的摩擦系数低于 TTM 的摩擦系数,这是混合 GnP 纳米润滑剂的最佳摩擦行为。此外,
更新日期:2021-07-05
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