Epoxy resin (EP) coatings have been widely applied in the field of surface protection engineering due to their high adhesion and good corrosion resistance, but the high friction and low wear resistance of pure EP coatings restrain their service life. Developing superior EP coatings with superlubricity and good antiwear performance is extensively desirable but remains to be a challenge yet. Here we for the first time report a superlubricious epoxy resin composite coating containing polydimethylsiloxane, PDMS (EP/PDMS) prepared by a facile solvent evaporation method. The PDMS was found to self-aggregate into nanoparticles in the epoxy resin matrix and leaded to the enhancement of tensile toughness of the epoxy resin coatings. The composite EP coatings containing PDMS performed steady superlubricity and high wear resistance when sliding against different bearing materials. Especially, an exceptionally and stable low friction coefficient of 0.007 was achieved by rotationally rubbing on the EP composite coating with a small content of 3.0 wt% against silicon nitride (Si₃N₄) ball in ambient air with a high relative humidity of 70 %, and the average wear rate of the EP/PDMS composite coating was as low as 2.76 × 10⁻⁷ mm³/N·m in spite of its low hardness.

环氧树脂（EP）涂层以其高附着力和良好的耐腐蚀性能在表面防护工程领域得到广泛应用，但纯EP涂层的高摩擦和低耐磨性限制了其使用寿命。开发具有超润滑性和良好抗磨损性能的优质 EP 涂层是人们普遍希望的，但仍然是一个挑战。在这里，我们首次报道了一种含有聚二甲基硅氧烷 PDMS (EP/PDMS) 的超润滑环氧树脂复合涂层，该涂层通过简便的溶剂蒸发法制备。发现 PDMS 在环氧树脂基质中自聚集成纳米粒子，并导致环氧树脂涂层的拉伸韧性增强。含有 PDMS 的复合极压涂层在与不同轴承材料滑动时表现出稳定的超润滑性和高耐磨性。特别是，通过旋转摩擦 3.0 wt% 的 EP 复合涂层与氮化硅（Si₃ N ₄ )球在相对湿度高达70%的环境空气中，EP/PDMS复合涂层虽然硬度较低，但平均磨损率却低至2.76×10 ^-7  mm ³ /N·m .