利用喷嘴内浸渍提高回收 PET 衍生 3D 打印连续香蕉纤维增强生物复合材料的强度

Ch. Kapil Ror, Vishal Mishra, S. Negi, V. M
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引用次数: 0

摘要

目的 本研究旨在评估使用喷嘴内浸渍法重复使用回收 PET(RPET)开发连续香蕉纤维(CBF)增强生物复合材料的潜力。本研究评估了 CBF/RPET 复合材料的机械性能和断裂形态行为,以确定层间距-微结构特征-机械性能之间的关系。RPET 用作基体材料,CBF 用作增强材料。测试试样是用定制的熔融沉积建模三维打印机制作的。在此过程中,使用了定制的三维打印机头,它具有独特的挤出和沉积打印纤维的能力,这些纤维由涂有 RPET 基质的 CBF 核心组成。结果发现,层间距为 0.7 毫米的 CBF/RPET 样品的杨氏模量(E)、屈服强度(sy)和极限拉伸强度分别是纯 RPET 的 1.9 倍、1.25 倍和 1.8 倍。同样,抗弯试验结果表明,层间距为 0.6 毫米的 CBF/RPET 样品的抗弯强度为 47.52 ± 2.00 兆帕,远高于纯 RPET 样品的抗弯强度(25.12 ± 1.94 兆帕)。使用回收的 PET 材料开发 3D 打印可持续结构可减少资源消耗,并鼓励负责任的生产实践。原创性/价值这项研究的关键创新在于喷嘴内浸渍方法的概念,即用 CBF 增强 RPET 以开发可持续复合结构。CBF 增强技术使 RPET 成为一种优质、可持续的环保材料,可减少三维打印对原始塑料材料的依赖。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Utilizing in-nozzle impregnation for enhancing the strength of recycled PET-derived 3D printed continuous banana fiber reinforced bio-composites
Purpose This study aims to evaluate the potential of using the in-nozzle impregnation approach to reuse recycled PET (RPET) to develop continuous banana fiber (CBF) reinforced bio-composites. The mechanical properties and fracture morphology behavior are evaluated to establish the relationships between layer spacing–microstructural characteristics–mechanical properties of CBF/RPET composite. Design/methodology/approach This study uses RPET filament developed from post-consumer PET bottles and CBF extracted from agricultural waste banana sap. RPET serves as the matrix material, while CBF acts as the reinforcement. The test specimens were fabricated using a customized fused deposition modeling 3D printer. In this process, customized 3D printer heads were used, which have a unique capability to extrude and deposit print fibers consisting of a CBF core coated with an RPET matrix. The tensile and flexural samples were 3D printed at varying layer spacing. Findings The Young’s modulus (E), yield strength (sy) and ultimate tensile strength of the CBF/RPET sample fabricated with 0.7 mm layer spacing are 1.9 times, 1.25 times and 1.8 times greater than neat RPET, respectively. Similarly, the flexural test results showed that the flexural strength of the CBF/RPET sample fabricated at 0.6 mm layer spacing was 47.52 ± 2.00 MPa, which was far greater than the flexural strength of the neat RPET sample (25.12 ± 1.94 MPa). Social implications This study holds significant social implications highlighting the growing environmental sustainability and plastic waste recycling concerns. The use of recycled PET material to develop 3D-printed sustainable structures may reduce resource consumption and encourages responsible production practices. Originality/value The key innovation lies in the concept of in-nozzle impregnation approach, where RPET is reinforced with CBF to develop a sustainable composite structure. CBF reinforcement has made RPET a superior, sustainable, environmentally friendly material that can reduce the reliance on virgin plastic material for 3D printing.
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