Nano-and Micro-tribology of Molecular Layers of Macromolacular Compounds on Solid Surfaces

实验证实了高分子量添加剂减少摩擦的机理，这可能是由于分子的高吸附能力或低脱附倾向。温度编程实验还发现，长直烷基链的低分子量化合物在中等温度下具有较好的润滑性能，而高分子量化合物在较高温度下具有优异的润滑性能。利用极性基础油进行的各种实验证实，高分子量添加剂润滑性能的改善与长分子链的膨胀有关。

The proposed friction reducing mechanism of high molecular weight additives that might be brought by the high adsorption capability or low desorption tendency of molecules was confirmed experimentally. It was also found from the temperature programmed experiments that although the low molecular weight compounds having long straight alkyl chain exhibited better lubrication performance under moderate temperature, the high molecular weight compounds showed excellent lubrication performance under higher temperature. It was confirmed from the various experiments using polar base oils that the improvement of lubrication performance of high molecular weight additives is related to the swelling of long molecular chain.