In recent years, the use of hybrid composites consisting of natural and synthetic fibers has gained increasing attention due to their potential for improved mechanical performance and sustainability. The primary aim of this study was to explore the impact of integrating jute and carbon fiber components into hybrid composites on the enhancement of the materials’ mechanical properties. Jute and carbon bidirectional fabrics were used with a bi-component epoxy matrix in order to fabricate the hybrid composite materials. The carbon bidirectional fabrics were placed on the outer layers, while the jute fabrics were used as the core of the hybrid composites. The core fibers were controlled by the number of layers (5), while the synthetic outer layers were varied (1 and 2, symmetrically and asymmetrically). The composite materials were characterized mechanically via tensile, flexural and impact tests. The results show that both the hybridization technique and the reinforcement symmetry significantly affect the general mechanical properties. In the analysis of tensile properties, a consistent monotonic increase in enhancement tendencies was observed with an increasing fraction of carbon fibers. Conversely, under flexion, a plateau was evident with regard to the hybridization architectural variations, although this behavior was not observed for the flexural modulus, which exhibited a continuous monotonic enhancement relative to the fraction of carbon fibers. Finally, under impact conditions, it was found that symmetry of the synthetic envelope is highly advantageous.

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黄麻/碳杂化环氧复合材料的机械表征

近年来，由天然纤维和合成纤维组成的混合复合材料的使用因其提高机械性能和可持续性的潜力而受到越来越多的关注。本研究的主要目的是探讨将黄麻和碳纤维成分集成到混合复合材料中对增强材料机械性能的影响。黄麻和碳双向织物与双组分环氧基质一起使用，以制造混合复合材料。碳双向织物被放置在外层，而黄麻织物被用作混合复合材料的核心。芯纤维由层数 (5) 控制，而合成外层则不同（1 和 2，对称和不对称）。通过拉伸、弯曲和冲击测试对复合材料进行机械表征。结果表明，杂化技术和增强对称性均显着影响一般力学性能。在拉伸性能分析中，随着碳纤维比例的增加，观察到增强趋势一致单调增加。相反，在弯曲下，杂化结构变化出现了明显的平台，尽管弯曲模量没有观察到这种行为，弯曲模量相对于碳纤维的分数表现出连续单调增强。最后，在冲击条件下，人们发现合成包络线的对称性非常有利。