To enhance the interfacial bonding between the graphene oxide nanoplatelets (GONs) and epoxy (EP) matrix, two different types of silane coupling agents (amino- and EP-silane) were applied to the GONs-EP nanocomposites. The effects of the silane compound type and silanized GON loading (0.1–0.5 wt% at an interval of 0.2) on the dry-sliding wear response of GONs-EP nanocomposites were then studied. The wear tests were conducted under 20 N load and 1000 m sliding distance. The results showed that the wear properties were remarkably improved by the incorporation of silanized GONs to the matrix, and the best wear behavior was obtained at 0.3 wt% silanized GONs. Most importantly, the amino-silane coupling agent was shown to be more effective in enhancing the wear resistance of the GONs-EP nanocomposites. After the wear tests, the composite surfaces were studied by scanning electron microscopy to find the predominant mechanisms.

中文翻译：

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氨基-环氧基-硅烷偶联剂官能化氧化石墨烯/环氧纳米复合材料干滑动磨损行为的比较研究

为了增强氧化石墨烯纳米片 (GON) 和环氧树脂 (EP) 基质之间的界面结合，将两种不同类型的硅烷偶联剂（氨基和 EP-硅烷）应用于 GONs-EP 纳米复合材料。然后研究了硅烷化合物类型和硅烷化 GON 负载量（0.1-0.5 wt%，间隔 0.2）对 GONs-EP 纳米复合材料干滑动磨损响应的影响。磨损试验在 20 N 载荷和 1000 m 滑动距离下进行。结果表明，在基体中加入硅烷化 GONs 显着改善了磨损性能，并且在 0.3 wt% 硅烷化 GONs 时获得了最佳磨损性能。最重要的是，氨基硅烷偶联剂在提高 GONs-EP 纳米复合材料的耐磨性方面更有效。经过磨损测试后，