工艺与制造英文2021被引 19
纳米SiO₂增强新型M形芯体泡沫填充聚合物复合材料夹芯板的弯曲强度
Flexural strength of foam‐filled polymer composite sandwich panel with novel M‐shaped core reinforced by <scp>nano‐SiO<sub>2</sub></scp>
Himan Khaledi, Yasser Rostamiyan · Islamic Azad University, Aliabad Katoul
摘要整理
本文通过实验研究了纳米SiO₂增强碳纤维增强复合材料（CFRP）夹芯板的弯曲强度，该夹芯板采用新型M形格栅芯体结构。实验采用真空辅助树脂传递模塑（VARRTM）工艺制备碳纤维-环氧树脂夹芯板，确保层合板无缺陷。随后向夹芯板芯体注入聚氨酯泡沫（PU）。通过三点弯曲加载测试确定夹芯板的弯曲强度。研究结果表明：（1）向碳纤维中添加1~3 wt%的纳米SiO₂对夹芯板弯曲强度的增强效果最佳；（2）聚氨酯泡沫填充显著提高了夹芯板的弯曲强度；（3）新型M形芯体结构能够有效延缓复合材料夹芯结构的屈曲和失效。该研究为开发高性能轻质夹芯复合材料提供了重要参考，M形芯体与纳米增强技术的结合为航空航天、风能等领域的应用奠定了基础。
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