The hybrid of graphene oxide nanosheets (GO)-perfluoropolyether (PFPE) was prepared, and polyoxymethylene (POM)/GO-PFPE nano-composite with ultra-low friction coefficient was fabricated via convenient melt processing. POM/PFPE molecules intercalated into GO layers by forming hydrogen bonding with high intercalation ratio and layer thickness, while GO was embedded and homogeneously distributed in matrix by incorporating PFPE as compatibilizer. Compared with neat POM, addition of GO-PFPE resulted in remarkable improvement of tribological behaviors with reduction of friction coefficient and wear rate by 65.2% and 74.4%, respectively, while the worn surface displayed flat and smooth features. The fluorine (F) element migrated towards sample surface to form uniform GO-PFPE transfer tribofilm and even reacted with iron (Fe) to form FeF₂ at friction interface during rubbing process, which effectively inhibited direct surface contact of POM matrix with friction pair, and greatly reduced friction force and friction heat, resulting in excellent lubricant and anti-wear performance of the composite.

制备了氧化石墨烯纳米片（GO）-全氟聚醚（PFPE）的杂化物，并通过方便的熔融加工制备了具有超低摩擦系数的聚甲醛（POM）/ GO-PFPE纳米复合材料。POM / PFPE分子通过形成具有高插入率和高层厚的氢键而插入GO层，而GO则通过掺入PFPE作为增容剂而被嵌入并均匀分布在基质中。与纯POM相比，GO-PFPE的添加显着改善了摩擦学性能，摩擦系数和磨损率分别降低了65.2％和74.4％，而磨损表面呈现出平整，光滑的特征。氟（F）元素向样品表面迁移以形成均匀的GO-PFPE转移摩擦膜，甚至与铁（Fe）反应形成FeF₂在摩擦过程中的摩擦界面处，有效地抑制了POM基体与摩擦副的直接表面接触，并大大降低了摩擦力和摩擦热，从而使复合材料具有出色的润滑和抗磨性能。