Abstract

The present article highlights the development of hybrid-fiber-reinforced composites using a vacuum-assisted resin transfer molding technique on low-cost flax fibers, carbon fiber, glass fibers and a vinyl ester resin system. Flax fibers are introduced to modulate mechanical properties, green credentials, cost, and the weight of carbon/glass/vinyl ester composites. The hybridization effect of flax, carbon, and glass fibers on mechanical properties, including tensile and flexural strengths, flexural modulus, impact strength, interlaminar shear strength, and damping is evaluated, which is also observed by SEM. The dynamic mechanical analysis was carried out for the composites with a three-point bending mode within a frequency range of 0 to 100 Hz. The results of the experiment reveal that hybrid composites with flax fabric and glass fabric had the highest flexural strength (727.8 MPa) and impact strength (0.171 J/mm²) compared with other composites. The dynamic mechanical analysis also showed that the highest value of Tan δ (0.0722) and damping ratio (2.75 %) were obtained compared with those of other composites.

中文翻译：

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混杂增强对乙烯基酯绿色复合材料力学性能的影响

摘要

本文重点介绍了在低成本亚麻纤维，碳纤维，玻璃纤维和乙烯基酯树脂体系上使用真空辅助树脂传递模塑技术开发的混合纤维增强复合材料。引入亚麻纤维来调节机械性能，绿色证书，成本以及碳/玻璃/乙烯基酯复合材料的重量。评估了亚麻纤维，碳纤维和玻璃纤维对机械性能的杂交效应，包括拉伸强度和挠曲强度，挠曲模量，冲击强度，层间剪切强度和阻尼。对三点弯曲模式的复合材料在0至100 Hz的频率范围内进行了动态力学分析。²）与其他复合材料相比。动态力学分析还表明，与其他复合材料相比，Tanδ（0.0722）和阻尼比（2.75％）最高。