本发明提供了一种超高相对分子质量聚乙烯复合材料及其制备方法,包括由碳纳米管与超高相对分子质量聚乙烯在高速气流冲击下复合得到的产物;其中,所述复合材料中碳纳米管的质量分数为0.1%~0.5%。该超高相对分子质量聚乙烯复合材料具有优良的耐摩擦磨损性能,与纯的超高相对分子质量聚乙烯相比,磨损率降低了62.5%,摩擦因数降低了7.4%。本发明的制 The invention provides an ultrahigh molecular weight polyethylene composite material and a preparation method thereof, which comprises the product obtained by complexing carbon nanotubes and ultra-high molecular weight polyethylene under high-speed airflow impact; wherein, in the composite material The mass fraction of carbon nanotubes is 0.1% ~ 0.5%. The ultra-high molecular weight polyethylene composites have excellent wear-resistant properties. The wear rate is reduced by 62.5% and the friction coefficient is reduced by 7.4% compared with the pure ultra-high molecular weight polyethylene. The system of the present invention