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Dual functional star polymers for lubricants

机译：用于润滑剂的双官能恒星聚合物

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摘要

Star-shaped poly(alkylmethacrylate)s (PAMAs) with a three armarchitecture were designed, prepared and their performance as a dual additive (viscosity index improver and friction modifier) for engine oils was evaluated. Furthermore, the structure-property relationships between the macromolecular structure and lubricant performance were studied, such as molecular weight and polarity effects on the viscosity index. Several copolymers of dodecylmethacrylate with polar methacrylates in various amounts and various topologies, were synthesized as model compounds. Star polymers with a polar content of at least 10% in a block or tapered block topology effectively reduced the friction coefficient in both mixed and boundary lubrication regimes. However, a polar content of 20% was efficient in reducing friction in both random and block topologies.
机译：设计，制备了三臂建筑的星状聚（烷基甲基丙烯酸酯）（PAMAS），并评价了作为发动机油的双层添加剂（粘度指数改进剂和摩擦改性剂）的性能。 此外，研究了大分子结构和润滑剂性能之间的结构性质关系，例如对粘度指数的分子量和极性效应。 用各种量和各种拓扑的聚甲基丙烯酸酯的几种十二烷基甲基丙烯酸甲酯的共聚物被合成为模型化合物。 在嵌段或锥形块拓扑中具有至少10％的极性含量的星形聚合物有效地降低了混合和边界润滑制度中的摩擦系数。 然而，极性含量为20％的含量有效地减少了随机和块拓扑的摩擦。

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  • 来源
    《RSC Advances》 |2016年第89期|共10页
  • 作者

    Cosimbescu Lelia; Robinson Joshua W.; Zhou Yan; Qu Jun;

  • 作者单位

    Pacific Northwest Natl Lab 902 Battelle Blvd POB 999 MSIN K2-44 Richland WA 99352 USA;

    Pacific Northwest Natl Lab 902 Battelle Blvd POB 999 MSIN K2-44 Richland WA 99352 USA;

    Oak Ridge Natl Lab Oak Ridge TN USA;

    Oak Ridge Natl Lab Oak Ridge TN USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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