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的减摩机理可能是由于分子的高吸附能力或低脱附倾向。程序升温实验还发现，低分子量的长直链化合物在中温下表现出较好的润滑性能，而高分子量化合物在高温下表现出较好的润滑性能。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溶胀有关。

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.