Almahri Ghdayra, Madi Kaouthar, Alkaabi Fatima, Badran Yahia, Shehadeh Khaled, ElHassan Amged, Ahmed Waleed, Alzahmi Salem
Department of Chemical & Petroleum Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates.
Department of Mechanical and Aerospace Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates.
Polymers (Basel). 2023 Jul 4;15(13):2946. doi: 10.3390/polym15132946.
In recent years, carbon fiber has experienced a significant surge in popularity attributed to its exceptional properties, including its high-temperature resistance, mechanical strength, and cost-effectiveness. Many industries have been attracted to the prevalent use of carbon-fiber-reinforced polymers or plastics (CFRP). However, the increasing demand for carbon fiber has created a waste recycling problem that needs to be addressed. This research aimed to develop a recycled composite using PET waste as a solution to the growing demand for both materials. The recycled carbon fibers were processed chemically and mechanically to generate power for this process. Various samples were tested with different proportions of CF (10%, 20%, 30%, and 40%) to analyze their mechanical properties. The recycled composites are examined under tensile test conditions to further explore the waste carbon reinforcement's effect on polymers' characteristics. Scanning electron microscopy was also utilized for mechanical morphology evaluations. After analyzing the data, it was found that samples containing 20% CF had the highest elastic modulus value among all the mixes. This is attributed to the reinforcing effect of the fibers. The Elasticity Modulus of the filaments increased with the concentration of CF, reaching its peak at 20% before decreasing. This trend is also apparent in the visual representations. When compared to recycling, the Elasticity Modulus value of 20% CF filament increased by 97.5%. The precise value for CF with a 20% filament is 4719.3 MPa. Moreover, the composite samples were analyzed using SEM to characterize them, and it was discovered that the incorporation of 20% CF/PET filler produced the composition with the highest strength.
近年来，碳纤维因其卓越的性能，包括耐高温性、机械强度和成本效益，而广受欢迎。许多行业都被碳纤维增强聚合物或塑料（CFRP）的普遍应用所吸引。然而，对碳纤维需求的增加引发了一个需要解决的废物回收问题。本研究旨在开发一种以PET废料为原料的再生复合材料，以应对对这两种材料不断增长的需求。对回收的碳纤维进行化学和机械处理，为该过程提供能量。用不同比例的CF（10%、20%、30%和40%）对各种样品进行测试，以分析其机械性能。在拉伸试验条件下对再生复合材料进行检测，以进一步探究废碳纤维增强对聚合物特性的影响。还利用扫描电子显微镜进行机械形态评估。分析数据后发现，含20%CF的样品在所有混合物中具有最高的弹性模量值。这归因于纤维的增强作用。长丝的弹性模量随CF浓度的增加而增加，在20%时达到峰值，然后下降。这种趋势在视觉呈现中也很明显。与回收前相比，含20%CF长丝的弹性模量值提高了97.5%。含20%长丝的CF的精确值为4719.3MPa。此外，使用扫描电子显微镜对复合材料样品进行分析以对其进行表征，发现加入20%的CF/PET填料可使组合物具有最高的强度。
