Surface of Al₂O₃ nanoparticles was modified with a silane coupling agent, and aramid fiber-reinforced epoxy nanocomposites were produced using these particles. Three different types of laminated nanocomposites were produced. These nanocomposites were obtained by adding modified nanoparticles to the epoxy resin and the aramid fiber, each separately, and to both epoxy resin and aramid fiber. All nanocomposites were produced by vacuum-assisted resin infusion method. The surface-modified Al₂O₃ nanoparticles were used in five different weight ratios (1, 2, 3, 4 and 5%) according to the epoxy resin. Tensile, three-point bending and Charpy impact tests were performed. Moreover, SEM images were analyzed, and EDX analysis was performed to confirm the elements inside the nanocomposites. As a result, it was shown that the flexural strength and Charpy impact energy of aramid fiber-reinforced epoxy nanocomposites were increased. Finally, a statistical analysis was performed using one-way ANOVA method to show that the results obtained experimentally were statistically reasonable.

中文翻译：

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表面改性的氧化铝纳米粒子填充芳纶纤维增强环氧纳米复合材料：制备和力学性能

Al ₂ O ₃纳米颗粒的表面用硅烷偶联剂改性，并使用这些颗粒制备了芳纶纤维增强的环氧纳米复合材料。产生了三种不同类型的层压纳米复合材料。这些纳米复合材料是通过将改性纳米颗粒分别分别添加到环氧树脂和芳族聚酰胺纤维以及环氧树脂和芳族聚酰胺纤维中而获得的。所有纳米复合材料均通过真空辅助树脂灌注法生产。表面改性的Al ₂ O ₃根据环氧树脂，纳米颗粒以五种不同的重量比（1、2、3、4和5％）使用。进行了拉伸，三点弯曲和夏比冲击试验。此外，分析了SEM图像，并进行了EDX分析以确认纳米复合材料内部的元素。结果表明，芳族聚酰胺纤维增强的环氧纳米复合材料的弯曲强度和夏比冲击能增加。最后，使用单向方差分析法进行统计分析，以表明实验获得的结果在统计上是合理的。