Significantly enhancing fracture toughness of epoxy composite with promising.-FeOOH@Fe2O3 hybrid nanoparticles by magnetic field assistance
Significantly enhancing fracture toughness of epoxy composite with promising.-FeOOH@Fe2O3 hybrid nanoparticles by magnetic field assistance
复制标题
通过磁场辅助显着提高环氧复合材料的断裂韧性与有前途的γ-FeOOH@Fe2O3杂化纳米颗粒
DOI：
10.1016/j.nanoms.2021.08.001
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发表时间：
2022-06-01
影响因子：
9.9
通讯作者：
Dai, Peibang
中科院分区：
文献类型：
--
作者：
Chen, Guan;Ma, Chuanguo;Dai, Peibang
环氧树脂（EP）的增韧和碳纤维增强复合材料（CF/EP）层合板的层间增韧一直受到广泛关注。采用液相沉积-空气氧化法制备了针状γ-FeOOH纳米粒子，并在不同条件下煅烧得到γ-FeOOH和γ-Fe 2 O3杂化纳米粒子（γ-FeOOH@Fe2O3）。系统研究了γ-FeOOH@Fe2O3焙烧条件和磁场辅助对EP断裂韧性的影响。在此基础上，选用增韧效果最好的γ-FeOOH@Fe_2O_3对CF/EP层合板进行了I型层间断裂韧性（GIC）的改善。所得γ-FeOOH @ Fe 2 O 3具有约1 μ m的长度、约100 nm的直径和8.99 - 45.96 emu/g的Ms。在250 ℃煅烧1 h后，含24wt%FeOOH和76wt%Fe2O3的γ-FeOOH @Fe（2）O3具有最佳的增韧效果。在0.09T的磁场下，FeOOH@Fe2O3/EP复合材料（2.45 MPa m（1/2））比纯环氧树脂和无磁场诱导的复合材料分别提高了81.7%和66.7%。此外，γ-FeOOH@Fe2O3/ CF/EP复合材料的GIC（0.914 kJ/m2）也比CF/EP和相应的无磁场感应的复合材料分别显著提高了88.8%和51.8%。
The toughening of epoxy resin (EP) and the interlaminar toughening of carbon fiber reinforced composite (CF/EP) laminates have been widely concerned. In this work, the needle-like gamma-FeOOH nanoparticles were prepared by liquid phase deposition-air oxidation method, and then were calcined under different conditions to obtain gamma-FeOOH and gamma-Fe2O3 hybrid nanoparticles (gamma-FeOOH@Fe2O3). Effect of calcination condition of gamma-FeOOH@Fe2O3 and magnetic field assistance on fracture toughness (KIC) of EP was systematically investigated. Then the selected gamma-FeOOH@Fe2O3 with the best toughening effect were used to improve the mode I interlaminar fracture toughness (GIC) of CF/EP laminate. The resulting gamma-FeOOH@Fe2O3 have a length of around 1 mu m, a diameter of around 100 nm and the Ms of 8.99 -45.96 emu/g. After calcinated at 250 degrees C for 1 h, the gamma-FeOOH@Fe(2)O3 containing 24 wt% FeOOH and 76 wt% Fe2O3 achieved the best toughening effect. Under a magnetic field of 0.09 T, the KIC of the.-FeOOH@Fe2O3/EP composite (2.45 MPa m(1/2)) is 81.7% and 66.7% higher than that of neat epoxy and the composite without magnetic field induction, respectively. Furthermore, the GIC of the gamma-FeOOH@Fe2O3/ CF/EP composite (0.914 kJ/m(2)) is also significantly increased by 88.8% and 51.8% compared to that of CF/EP and the corresponding composite without magnetic field induction, respectively.