减摩耐磨环氧树脂纳米复合材料的研究

为提高环氧树脂的减摩耐磨性能,本工作采用高硬度纳米氮化硅粒子和具有优异自润滑和导热性能的短碳纤维进行填充改性,以期通过填料之间的协同作用,显著降低复合材料的表面摩擦力和摩擦面温度,从而提高抵抗磨损能力。摩擦磨损实验结果表明,同时加入纳米氮化硅粒子和短碳纤维时,可以获得优于加入单一填料所获得的摩擦磨损性能。纳米氮化硅粒子/短碳纤维/环氧树脂复合材料的磨损机理主要是粘着磨损和磨粒磨损。

Epoxy Based Nanocomposites with Reduced Frictional Coefficient and Improved Wear Resistance

For enhancing tribological performance of epoxy,the present work added nano-Si3N4 particles and short carbon fiber into the resin as modifiers.On one hand,nano-Si3N4 particles are good for building up transfer film during wear;on the other hand,short carbon fiber can decrease frictional force and surface temperature.Unlubricated sliding wear tests indicated that compared with the cases with individual fillers,both frictional coefficient and specific wear rate of the hybrid composites can be obviously reduce...