油酸/PS/TiO_2复合纳米微球对液体石蜡抗磨性能的影响研究

采用种子乳液聚合法制备了油酸 / PS/ Ti O2 复合纳米微球 ,在四球摩擦磨损试验机上考察了油酸 / PS/ Ti O2 复合纳米微球添加剂对液体石蜡抗磨性能的影响 ,采用 X射线光电子能谱分析了钢球磨斑表面边界膜元素的组成及化学状态 .结果表明 ,油酸 / PS/ Ti O2 复合微球作为润滑油添加剂具有良好的抗磨性能 ,能显著提高基础油的失效载荷 .表面分析结果表明 ,复合纳米微球的抗磨作用取决于其摩擦化学反应所生成的含有 Ti O2 及部分添加剂分解产物的复合膜 .

PS/TiO_2复合纳米微球的制备和结构表征

PS/TiO2 composite nanospheres were prepared in situ by seed emulsion polymerization,and the structure characterization was carried out by TEM、 UV-Vis、 FTIR、 DSC＆ TGA.The tribological behaviors of PS/TiO2 nanospheres as additives in paraffin oil were evaluated on a four-ball machine.Experimental results indicate that the PS/TiO2 composite nanospheres have a good anti-wear performance.