工艺与制造英文2020被引 21
碎玻纤/碳纳米管增强分级结构夹层泡沫夹芯复合材料的力学性能
Mechanical properties of foam sandwich with chopped‐glass‐fiber/carbon nanotube reinforced hierarchical structure interlayer
Qihui Chen, Surui Du, Zhiyuan Jiang, Yaqing Liu, Ruikui Du, Guizhe Zhao · North University of China
摘要整理
采用碎玻纤/多壁碳纳米管（MWCNTs）分级增强结构对夹芯材料的芯-面层界面进行增韧。将经MWCNTs-COOH改性的碎纤维垫铺设在面层-芯层界面处，通过真空辅助树脂传递模塑（VARTM）工艺制备夹芯梁。该夹芯结构由聚氯乙烯（PVC）泡沫芯层和两层玻纤/环氧树脂复合面层组成。采用准静态三点弯曲、夏比冲击和非对称双悬臂梁等测试方法表征力学性能。结果表明，在质量增加可忽略、工艺变化最小的前提下，含分级增强结构的夹芯材料的力学性能和界面韧性均得到显著提升。通过扫描电子显微镜观察分析了碎玻纤、碳纳米管之间的界面特征和能量吸收机制，揭示了分级结构的增韧机理。
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