丝瓜/GCW 纤维增强聚合物混合复合材料的拉伸特性表征

Mohd Khairul Afiq, H. Kuan, Mohamad Zaki Hassan
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引用次数: 0

摘要

人们对纤维增强聚合物(FRP)复合材料进行了广泛的研究,这些复合材料的机械性能优于其单个成分。为了补充当前的研究趋势,我们使用研磨咖啡废料(GCW)和丝瓜纤维增强聚乙烯(PE)复合材料,制造出一种混合天然玻璃钢复合材料。复合材料的拉伸测试表明,最佳纤维量为 15%至 35%,拉伸强度分别为 9.32 兆帕和 8.75 兆帕。同样,所制造的复合材料的拉伸模量在 25% 时达到峰值,为 238 兆帕,然后在 35% 时降至 173 兆帕。这表明纤维有效地增强了聚合物基体,但一旦复合材料达到最佳纤维量,拉伸强度和拉伸模量都会下降。拉伸性能的降低可归因于整个复合材料的承载能力分布不均,因为一旦达到最佳纤维量,纤维就不再能完全支撑基体。比拉伸强度和比拉伸模量也表明,加入丝瓜纤维和 GCW 超细纤维有助于减轻复合材料的重量。总之,使用 25% 纤维量制造的混合复合材料的拉伸强度几乎与纯基体相似,但在拉伸模量方面有一个值得注意的值。与纯聚乙烯层压板相比,混合复合材料的拉伸强度不相上下,但刚度要大得多。因此,这表明天然丝瓜/GCW 混合玻璃钢在工程行业,如轻质家具、家用电器、汽车零件和其他复合工程应用方面具有潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Tensile Properties Characterisation of Hybrid Luffa/GCW Fiber Reinforced Polymer Composite
Extensive research has been conducted on fiber reinforced polymer (FRP) composites, which have demonstrated superior mechanical properties compared to their individual components. In order to add on to current research trends, the use of ground coffee waste (GCW) and Luffa fibers reinforced polyethylene (PE) composites were fabricated to produce a hybrid natural FRP composite. Tensile testing of the composite indicates that the optimum fiber volume to be between 15% and 35%, as the tensile strength exhibited 9.32 MPa and 8.75 MPa, respectively. Similarly, the tensile modulus of the fabricated composite peaked at 25% with 238 MPa, then declined to 173 MPa at 35%. This indicates that the fibers effectively reinforce the polymer matrix, but once the composite reaches its optimal fiber volume, a decrease in both tensile strength and tensile modulus is observed. The reduction in tensile properties can be attributed to an uneven distribution of load-bearing capacity throughout the composite, as the fibers are no longer able to fully support the matrix once the optimal fiber volume is reached. The specific tensile strength and specific tensile modulus also shows that with the inclusion of Luffa fiber and GCW microfiber contributed to a lighter weight composite. In a nutshell, the hybrid composite fabricated using 25% fiber volume exhibited a tensile strength almost similar to its neat matrix counterpart, though has a noteworthy value in terms of its tensile modulus. The hybrid composite can be as strong in terms of tensile strength, but far more significant in its rigidity, in comparison to the neat polyethylene laminate. Therefore, it showed that the hybrid natural Luffa/GCW FRP has the potential in the engineering industry, such as lightweight furniture, household appliances, automotive parts, and other composite engineering applications.
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