Abstract This research aims to develop superhydrophilic fiberglass/epoxy nanocomposite (FGEC) laminates with high mechanical, thermal, and impact properties. In order to achieve this goal, functionalized graphene (FGA) was used as a nanofiller material to improve the mechanical, impact, and thermal behaviors of FGEC, while the plasma treatment helped to form the oxidized polar functional groups (C9O groups and C–O groups) on the fabricated FGEC laminates, thus modifying their hydrophilic behavior. The experiments were started with production of FGEC laminates by mixing FGA (0.05-0.4 wt%) with epoxy resin in presence of Acetone (to obtain better dispersion), followed by preparation of FGEC laminates using vacuum-assisted resin transfer and curing processes. Afterwards, the surfaces of the fabricated FGEC laminates were treated by air plasma at 13Pa and 30W for different treatment times in the range 5–30 min. Mechanical and impact properties of the untreated and treated laminates were investigated according to ASTM-D7025 and ISO 6603-2 standards, respectively. Also, thermal behavior of the laminates was investigated using a thermogravimetric analysis, while a high resolution camera was used to record and calculate a contact angle of the untreated and treated laminates. SEM and Optical Microscope was used to observe dispersion of FGA, microstructure, impact mechanism, and surface morphology of the fabricated FGEC matrix. Meanwhile, XPS was used to evaluate changes in the surface structures of the untreated and treated samples. The results showed that 0.35 wt% of FGA and 15-min exposure to plasma treatment were enough to improve tensile strength and impact energy of the laminates by 18% and 70%, respectively, and to decrease the water contact angle from 67° to 14°.

中文翻译：

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具有高机械、冲击和热性能并经等离子体处理的超亲水功能化石墨烯/玻璃纤维/环氧树脂层压板

摘要 本研究旨在开发具有高机械、热和冲击性能的超亲水玻璃纤维/环氧树脂纳米复合材料 (FGEC) 层压板。为了实现这一目标，功能化石墨烯（FGA）被用作纳米填料以改善 FGEC 的机械、冲击和热行为，而等离子体处理有助于形成氧化的极性官能团（C9O 基团和 C-O组）在制造的 FGEC 层压板上，从而改变它们的亲水行为。实验首先通过在丙酮存在下将 FGA (0.05-0.4 wt%) 与环氧树脂混合（以获得更好的分散性）来生产 FGEC 层压板，然后使用真空辅助树脂转移和固化工艺制备 FGEC 层压板。然后，制造的 FGEC 层压板的表面在 13Pa 和 30W 下用空气等离子体处理，处理时间在 5-30 分钟的范围内。分别根据 ASTM-D7025 和 ISO 6603-2 标准研究了未处理和处理过的层压板的机械和冲击性能。此外，使用热重分析来研究层压板的热行为，同时使用高分辨率相机记录和计算未处理和处理过的层压板的接触角。使用扫描电镜和光学显微镜观察制备的 FGEC 基体的 FGA 的分散性、微观结构、冲击机制和表面形貌。同时，XPS 用于评估未处理和处理样品的表面结构变化。结果表明，0。