Özsoy Mehmet İskender, Fidan Sinan, Bora Mustafa Özgür, Ürgün Satılmış
Department of Mechanical Engineering, Faculty of Engineering, Sakarya University, Sakarya 54050, Türkiye.
Department of Airframe & Powerplant Maintenance, Faculty of Aeronautics and Astronautics, Kocaeli University, Kocaeli 41001, Türkiye.
Polymers (Basel). 2025 Mar 24;17(7):866. doi: 10.3390/polym17070866.
This work investigates the hybrid fiber sequence effect on the flexural and impact properties of basalt/carbon epoxy composites. In the present study, six configurations of composite laminates were fabricated by vacuum-assisted resin transfer method and tested in three-point bending and Charpy impact tests. The results show that hybrid composites outperform pure basalt or carbon laminates. The maximum flexural strength and modulus, such as in [CBC], were realized for the configurations with carbon fibers on the outer layers because of the rigidity of carbon. However, higher energy absorption was offered by the basalt-rich composites because of their ductility. Among the hybrids, a balanced stacking sequence like [CB] and [BCB] showed an optimum between stiffness and toughness. Flexural modulus was maximum at 12.1 GPa for carbon-dominant layers, whereas impact resistance was maximum for alternating hybrid layers at 120 kJ/m. SEM analysis revealed that the dominant mechanisms of failure were delamination at the fiber-matrix interface and fiber pull-out, while the stacking order was critical regarding stress distribution. Hybridization also increased cost-performance metrics by a factor of 40%, as basalt fibers reduced the cost while maintaining acceptable mechanical properties. These results prove the potential of basalt-carbon hybrid for applications requiring high strength, impact resistance, and economic efficiency.
本研究探讨了混杂纤维序列对玄武岩/碳纤维环氧树脂复合材料弯曲性能和冲击性能的影响。在本研究中，采用真空辅助树脂传递模塑法制备了六种复合材料层压板构型，并进行了三点弯曲试验和夏比冲击试验。结果表明，混杂复合材料的性能优于纯玄武岩或碳纤维层压板。由于碳纤维的刚性，外层为碳纤维的构型，如[CBC]，实现了最大弯曲强度和模量。然而，富含玄武岩的复合材料由于其延展性而具有更高的能量吸收能力。在混杂复合材料中，像[CB]和[BCB]这样的平衡铺层序列在刚度和韧性之间表现出最佳性能。以碳纤维为主的层压板的弯曲模量最大，为12.1 GPa，而交替混杂层压板的抗冲击性最大，为120 kJ/m²。扫描电子显微镜分析表明，主要破坏机制是纤维-基体界面处的分层和纤维拔出，而铺层顺序对应力分布至关重要。混杂化还使性价比指标提高了40%，因为玄武岩纤维降低成本的同时保持了可接受的力学性能。这些结果证明了玄武岩-碳纤维混杂材料在需要高强度、抗冲击性和经济效益的应用中的潜力。
