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退火对回收碳纤维增强的熔融沉积成型3D打印丙烯腈-丁二烯-苯乙烯共聚物强度提升的影响

Effects of Annealing for Strength Enhancement of FDM 3D-Printed ABS Reinforced with Recycled Carbon Fiber.

作者信息

Seok Wonseok, Jeon Euysik, Kim Youngshin

机构信息

Department of Future Convergence Engineering, Kongju National University, Cheonan 31080, Republic of Korea.

Graduate Program for Eco-Friendly Future Automotive Technology, Kongju National University, Cheonan 31080, Republic of Korea.

出版信息

Polymers (Basel). 2023 Jul 21;15(14):3110. doi: 10.3390/polym15143110.

DOI:10.3390/polym15143110
PMID:37514499
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10384234/
Abstract

This study investigates the effect of annealing on the mechanical properties of fused deposition modeling (FDM) 3D-printed recycled carbon fiber (rCF)-reinforced composites. In this study, filaments for FDM 3D printers are self-fabricated from pure acrylonitrile butadiene styrene (ABS) and ABS reinforced with fiber content of 10 wt% and 20 wt% rCF. This study explores the tensile and flexural properties as a function of the annealing temperature and time for the three different fiber content values. In addition, dimensional measurements of the shape changes are performed to determine the suitability of applying annealing in practical manufacturing processes. The results show that annealing improves the mechanical properties by narrowing the voids between the beads, which occur during the FDM process, and by reducing the gaps between the fibers and polymer. Following annealing, the largest tensile and flexural strength improvements are 12.64% and 42.33%, respectively, for the 20 wt% rCF content samples. Moreover, compared with the pure ABS samples, the annealing effect improves the mechanical properties of the rCF-reinforced samples more effectively, and they have higher dimensional stability, indicating their suitability for annealing. These results are expected to expand the application fields of rCF and greatly increase the potential use of FDM-printed parts.

摘要

本研究调查了退火对熔融沉积成型(FDM)3D打印回收碳纤维(rCF)增强复合材料力学性能的影响。在本研究中,FDM 3D打印机的细丝由纯丙烯腈丁二烯苯乙烯(ABS)以及纤维含量为10 wt%和20 wt%的rCF增强的ABS自行制造。本研究探讨了三种不同纤维含量值下,拉伸和弯曲性能随退火温度和时间的变化情况。此外,还进行了形状变化的尺寸测量,以确定在实际制造过程中应用退火的适用性。结果表明,退火通过缩小FDM过程中出现的珠粒之间的空隙以及减少纤维与聚合物之间的间隙来改善力学性能。退火后,对于20 wt% rCF含量的样品,最大拉伸强度和弯曲强度提高分别为12.64%和42.33%。此外,与纯ABS样品相比,退火效果更有效地改善了rCF增强样品的力学性能,并且它们具有更高的尺寸稳定性,表明它们适合进行退火处理。这些结果有望扩大rCF的应用领域,并大大增加FDM打印部件的潜在用途。

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