Investigating the tribological behavior of PEGylated MoS<sub>2</sub> nanocomposites as additives in polyalkylene glycol at elevated temperature

Zhuang Xu; Wenjing Lou; Xinhu Wu; Xiaobo Wang; Junying Hao

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Investigating the tribological behavior of PEGylated MoS₂ nanocomposites as additives in polyalkylene glycol at elevated temperature

机译：研究聚乙二醇化MoS _{2 纳米复合材料作为添加剂在聚亚烷基二醇中高温下的摩擦学行为}

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MoS₂–polydopamine–methoxypolyethyleneglycol amine (MoS₂–PDA–MGA) was synthesized through the combination of mussel-inspired chemistry and the Michael addition reaction. The modification of MoS₂ via PDA and MGA enhanced its dispersion stability in oil. The tribological properties of MoS₂–PDA–MGA for use as additives in polyalkylene glycol (PAG) base oil were investigated using an oscillating reciprocating tribometer at elevated temperatures. The results indicated that the addition of 0.7 wt% MoS₂–PDA–MGA in PAG resulted in excellent friction-reducing and anti-wear (AW) performances compared with PAG base oil. The tribological results of MoS₂–PDA–MGA and MoS₂ dispersed in PAG base oil after settling for 7 days indicate that MoS₂–PDA–MGA, with its good dispersion stability, has stable friction-reducing and AW properties. XPS analysis suggested that a protective boundary film formed on the wear surfaces during the friction and wearing process, which was believed to be responsible for the excellent tribological performance of MoS₂–PDA–MGA dispersed in PAG at elevated temperature.

机译：通过贻贝的组合合成了MoS _{2 -聚多巴胺-甲氧基聚乙二醇胺（MoS _{2 -PDA-MGA）启发化学和迈克尔加成反应。通过 PDA和MGA修饰MoS _{2 可以增强其在油中的分散稳定性。使用振荡往复式摩擦计在高温下研究了MoS _{2 –PDA-MGA在聚亚烷基二醇（PAG）基础油中用作添加剂的摩擦学性能。结果表明，与PAG基料相比，在PAG中添加0.7 wt％MoS _{2 –PDA-MGA可获得优异的减摩和抗磨（AW）性能油。沉降7后分散在PAG基础油中的MoS _{2 –PDA-MGA和MoS _{2 的摩擦学结果天数表明，MoS _{2 –PDA-MGA具有良好的分散稳定性，具有稳定的减摩和抗磨损性能。 XPS分析表明，在摩擦和磨损过程中在磨损表面上形成了保护性边界膜，这被认为是MoS _{2 -PDA优异的摩擦学性能的原因。 –MGA在高温下分散在PAG中。}}}}}}}}} 展开▼

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《RSC Advances》 |2017年第84期|共9页

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Zhuang Xu; Wenjing Lou; Xinhu Wu; Xiaobo Wang; Junying Hao;
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Investigating the tribological behavior of PEGylated MoS2 nanocomposites as additives in polyalkylene glycol at elevated temperature

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Investigating the tribological behavior of PEGylated MoS₂ nanocomposites as additives in polyalkylene glycol at elevated temperature