【摘要】 在超高分子量聚乙烯(UHMWPE)中填充石墨包覆铜纳米粒子(GECNP),利用扫描电子显微镜观察了复合材料的断面形貌,用XP销-盘摩擦磨损试验机研究了其摩擦磨损性能,并用铜粉(Copper)、纳米石墨粉(GNS)作对比添加剂进行了同等试验。结果表明,GECNP均匀分散在UHMWPE中,当线速度为0.25m.s-1,GECNP填充量不高于3%时,UHMWPE/GECNP复合材料与空白UHMWPE相比磨损率降低,摩擦系数保持不变,综合性能优于UHMWPE/Copper和UHMWPE/GNS。当GECNP填充量为1%时,磨损率最低,与空白样相比降低了53.9%,摩擦系数也略有降低。更多还原

【Abstract】 Graphite encapsulated copper nano-particles(GECNP)are filled in UHMWPE.The fractural face of composites with SEM is observed,and the friction and wear properties of three composite materials are researched by XP pin-on-disc friction and wear test machine.For contrast,copper and GNS are used to do experimental additive.The results indicate that GECNPs are distributed uniformly in UHMWPE;when the speed is 0.25m·s-1and the quality content of GECNP is within 3%,the wear rate of UHMWPE/GECNP composite materials is reduced compared with the UHMWPE,and the friction coefficients are unchanged.The comprehensive performance is better than UHMWPE/Copper and UHMWPE/GNS.When the quality content of GECNP is 1%,the wear rate is minimum,that is the wear rate of UHMWPE/GECNP composite materials is reduced 53.9% compared with the UHMWPE,and the friction coefficient is slightly lower.更多还原