仿生自组装纳米复合薄膜的制备与摩擦行为研究

利用分子自组装法在玻璃表面制备未聚合与聚合（丙烯酸十二醇酯／二氧化硅）有机－无机有序交替的层次纳米复合薄膜，并对其摩擦学行为进行了探讨。结果表明：未聚合或聚合薄膜的结构类似于海洋贝类的贝壳结构，与钢球对摩时都有较好的减摩性，摩擦系仅为0．1；而聚合薄膜的抗磨性能大幅提高，其失效循环次数为未聚合薄膜的6倍。

The Preparation and Tribological Properties of Biomimic Self-assembly Organic-inorganic Nanocomposite Films

The organic inorganic ordered biomimic nanocomposite films were prepared by means of molecular self assembly method. The friction reducing behavior of the films sliding against SAE 52100 steel was examined on a dynamic static coefficient procession measurement apparatus at ambient conditions. The worn surface morphologies of the films were observed with a scanning electron microscope. The depth distribution of the elements along the worn film surfaces was determined by means of X ray photoelectron spectroscopy. As the results, both polymerized and un polymerized films have good friction reducing properties. The friction coefficients of the films sliding against steel is as low as 0.1 which is considerably lower than that for microscope slide (0.78). Moreover, the polymerized film has longer antiwear life than the un polymerized one. This is attributed to the improvement of the structure and strength after polymerization.