Huang Yuan, Ning Na, Qiu Yiping, Wei Yi
Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, 2999 North Renmin Road, Shanghai 201620, China.
Center for Civil Aviation Composites, Donghua University, 2999 North Renmin Road, Shanghai 201620, China.
Polymers (Basel). 2023 Jul 25;15(15):3152. doi: 10.3390/polym15153152.
In this study, carbon nanotubes (CNTs) are functionalized through diazonium salt reaction to introduce polar groups onto their surfaces. These functionalized CNTs (FCNTs) are added into PPO solutions at different loadings (0 wt%, 0.5 wt%, 1 wt%, 1.5 wt%) and used for electrospinning. The results show that the addition of FCNTs facilitate the production of PPO veils having small fiber diameters. The veils are used as interleaves in CF/EP composite laminates. The Mode I and Mode II interlaminar fracture toughness tests reveal that PPO veils containing 0.5 wt% FCNTs exhibit the optimal toughening. and have an improvement of approximately 120% and 180% over the untoughened samples, respectively, which is 15% and 26% higher than that of PPO veils containing no CNTs, respectively. The toughening mechanism is also analyzed using scanning electron microscopy (SEM).
在本研究中，通过重氮盐反应对碳纳米管（CNT）进行功能化处理，以在其表面引入极性基团。将这些功能化碳纳米管（FCNT）以不同负载量（0 wt%、0.5 wt%、1 wt%、1.5 wt%）添加到聚苯醚（PPO）溶液中，并用于静电纺丝。结果表明，添加FCNT有助于制备具有小纤维直径的PPO纤维网。这些纤维网用作碳纤维/环氧树脂（CF/EP）复合层压板的夹层。I型和II型层间断裂韧性测试表明，含有0.5 wt% FCNT的PPO纤维网表现出最佳的增韧效果，与未增韧的样品相比，分别提高了约120%和180%，分别比不含CNT的PPO纤维网高15%和26%。还使用扫描电子显微镜（SEM）分析了增韧机理。
