EP/氧化石墨烯–硬脂酸丁酯微胶囊复合材料

采用种子微悬浮聚合法制备了聚苯乙烯/氧化石墨烯复合囊壁包覆硬脂酸丁酯微胶囊润滑材料(MGO–Micro LMs),以MGO–Micro LMs为润滑填料,环氧树脂(EP)为基体材料,采用浇注成型工艺制备了EP/MGO–Micro LMs复合材料。采用滑动摩擦磨损试验仪评价了MGO–Micro LMs对EP基体材料摩擦学性能的影响;采用扫描电子显微镜对磨损面的微观形貌进行表征,并探究了其磨损机理。结果表明,MGO–Micro LMs能够显著地降低EP的摩擦系数和磨损量,当MGO–Micro LMs质量分数为20%时,EP/MGO–Micro LMs复合材料的摩擦系数为0.138 44,磨损量减少了约42.3%,磨损机理主要为磨粒磨损。

Epoxy Resin/Graphene Oxide-Butyl Stearate Microcapsules Composite

Microencapsulated lubricating materials(MGO–MicroLMs) with graphene oxide/polystyrene as composite wall, butyl stearate as core was prepared by seeded micro-suspension polymerization. EP/MGO–MicroLMs composite materials were prepared by casting process using MGO–MicroLMs as lubricating filler,EP as matrix materials. The effects MGO–MicroLMs on tribological properties of epoxy resin matrix materials were studied by the sliding friction and wear tester. The worn surface morphology was characterized by SEM, and the wear mechanism was explored. The results show that the MGO–MicroLMs can significantly reduce the friction coefficient of the epoxy resin and the wear loss. When the mass fraction of MGO–MicroLMs is 20%, the friction coefficient of the EP/MGO–MicroLMs composite is 0.138 44,wear loss reduces about 42.3%, the main wear mechanism is adhesive wear.