A novel method, drawing inspiration from the chemistry principle observed in mussels, has been recently developed to augment the wettability and adherence of carbon fibers (CFs) within epoxy resin matrix. This technique entails the concurrent application of gallic acid and aminopropyl double terminated polydimethylsiloxane on CF surfaces via a direct method. Advanced analytical techniques like scanning electron microscopy, X-ray diffraction, infrared and Raman spectroscopy, along with X-ray photoelectron spectroscopy, confirmed the effective simultaneous deposition of these agents, possibly via Michael addition or Schiff base reactions. Incorporation of these treated fibers into epoxy composites resulted in notable performance enhancements. The composites with gallic acid and polydimethylsiloxane modified fibers exhibited up to 14%, 13%, and 27% improvements in interlaminar shear strength, flexural modulus, and flexural strength, respectively, compared to their counterpart with untreated fibers. These results indicate that combining gallic acid and polydimethylsiloxane on CFs is a potent approach to boost the interface qualities of CF-reinforced epoxy resin composites.

中文翻译：

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没食子酸-聚二甲基硅氧烷共沉积碳纤维的制备改善环氧复合材料的界面性能

最近开发了一种新方法，其灵感来自于在贻贝中观察到的化学原理，可以增强环氧树脂基质中碳纤维（CF）的润湿性和粘附性。该技术需要通过直接方法在 CF 表面同时应用没食子酸和氨丙基双封端聚二甲基硅氧烷。先进的分析技术，如扫描电子显微镜、X射线衍射、红外和拉曼光谱以及X射线光电子能谱，证实了这些试剂的有效同时沉积，可能是通过迈克尔加成或希夫碱反应。将这些处理过的纤维掺入环氧复合材料中可以显着提高性能。与未经处理的纤维相比，含有没食子酸和聚二甲基硅氧烷改性纤维的复合材料的层间剪切强度、弯曲模量和弯曲强度分别提高了 14%、13% 和 27%。这些结果表明，在 CF 上结合没食子酸和聚二甲基硅氧烷是提高 CF 增强环氧树脂复合材料界面质量的有效方法。