水润滑下纳米三氧化二铝/端异氰酸酯基聚丁二烯液体橡胶-环氧树脂复合材料的摩擦性能

Tribological properties of nano-aluminium oxide/isocyanat-terminated polybutadiene liquid rubber-epoxy resin composites under water lubricated sliding condition

研究了纳米Al2O3/端异氰酸酯基聚丁二烯液体橡胶-环氧树脂(ETPB)复合材料在水润滑条件下的摩擦性能,并用扫描电子显微镜表征了复合材料的磨损表面形貌,探讨了磨损机理。结果表明,在水润滑条件下,纳米Al2O3/ETPB复合材料的磨损率和摩擦系数低于ETPB;载荷和滑动速率的变化对纳米Al2O3/ETPB复合材料的磨损率、摩擦系数及磨损表面形貌影响不大,复合材料的磨损表面均未产生裂纹;ETPB的磨损机理为疲劳磨损,纳米AlO/ETPB复合材料的磨损机理为机械抛光磨损。

The tribological properties of nano- Al2O3/isocyanat-terminated polybutadiene liquid rubber-epoxy resin （ETPB） composites were studied under water lubricated sliding condition. The worn surface of composites was observed by scanning electron microscope. The wearing mechanism was explored. The results showed that the rate of wear and friction coefficient of nano-Al2O3/ETPB were lower than that of ETPB. Change of load and sliding speed had less effect on the rate of wear, friction coefficient or worn surface of nano-Al2O3/ETPB, and the wearing surface of the composites had no cracking.The wearing mechanism of ETPB was fatigue wear, and that of nano-Al2O3/ETPB was mechanical polishing wear.