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对玄武岩纤维织物层合复合材料进行层间增韧改性实验研究,对不同增韧方法下材料的增韧效果进行对比。实验中分别采用静电纺PA6纳米纤维膜及玻纤表面毡作为增韧材料,对增韧改性前后层合复合材料的II型层间断裂韧性、冲击后剩余压缩强度(CAI)进行了测试与分析。实验结果显示,两种增韧层材料均可显著改善玄武岩纤维复合材料层间韧性,复合材料II型层间断裂韧性分别提高41.74%和56.86%,材料CAI值分别提高19.6%和23.81%。两种增韧层材料各有优势,在玄武岩纤维层合复合材料层间增韧方面都具有应用潜力。将二者结合构建的混杂增韧层也具有一定的增韧能力,但在界面相容改性等方面有待进行深入研究与优化,以期改善增韧效果。
The basalt fiber fabric laminates were toughened by interlaminar toughening, and the toughening effect of materials under different toughening methods was compared. In the experiment, electrospun PA6 nanofiber membrane and fiberglass surface felt were used as toughening materials respectively to test interlaminar fracture toughness and residual compressive strength (CAI) after laminates toughening analysis. The experimental results show that both toughened layers can significantly improve the interlaminar toughness of basalt fiber composites. The interlaminar fracture toughness increases by 41.74% and 56.86% respectively, and the material CAI value increases by 19.6% and 23.81% respectively. Both toughened layers have their own advantages and have potential applications in the toughening of basalt fiber laminates. The hybrid toughening layer combined with the two also has some toughening ability, but it needs to be further studied and optimized in the aspect of interfacial compatibility modification in order to improve the toughening effect.