A resin nanocomposite embedded by encapsulated nanoparticles with exceptional mechanical and lubrication properties is reported. The functional encapsulated nanoparticles, synthesized by miniemulsion co-polymerization of methyl methacrylate with n-butyl acrylate, styrene and glycidyl methacrylate, had tunable glass transition temperatures and surface reactive glycidyl groups. The as-synthesized nanoparticles with controlled size, shell component and surface function, impacted a nanocomposite with the high toughness and strength as well as ultralow friction properties by their covalent crosslinking with the matrix and the formation of thin boundary lubricant film. Remarkably, the optimal toughness and strength of the nanocomposite with encapsulated nanoparticles achieved 3.8 and 1.5 times those of the counterpart with encapsulated microparticles, respectively. The nanocomposite incorporated with as-synthesized nanoparticles exhibited an ultralow coefficient of friction (COF) and a wear rate of 0.027 and 8.0 × 10⁻⁷ mm³/Nm, which were only 3.9% and 0.6% those of the matrix, respectively. The developed robust mechanical and ultralow friction resin nanocomposite from crosslinkable and flexible polymer-encapsulated nanoparticles is highly expected for engineering applications.

据报道，由纳米颗粒包裹的树脂纳米复合材料具有出色的机械和润滑性能。通过甲基丙烯酸甲酯与n的细乳液共聚合成的功能性封装纳米颗粒丙烯酸丁酯，苯乙烯和甲基丙烯酸缩水甘油酯具有可调的玻璃化转变温度和表面反应性缩水甘油基。尺寸，壳组分和表面功能可控的合成纳米颗粒通过与基质共价交联并形成薄的边界润滑膜，冲击了具有高韧性和强度以及超低摩擦性能的纳米复合材料。显着地，具有包封的纳米颗粒的纳米复合材料的最佳韧性和强度分别达到具有包封的微粒的纳米复合材料的最佳韧性和强度的3.8倍和1.5倍。掺入合成纳米颗粒的纳米复合材料表现出超低摩擦系数（COF），磨损率分别为0.027和8.0×10 ^-7 mm ³/ Nm，分别仅为矩阵的3.9％和0.6％。由可交联和柔性聚合物包封的纳米颗粒开发的坚固的机械和超低摩擦树脂纳米复合材料在工程应用中具有很高的期望。