Please use this identifier to cite or link to this item:
https://hdl.handle.net/10356/162048
Title: | Improvement in the mechanical performance of Multi Jet Fusion–printed aramid fiber/polyamide 12 composites by fiber surface modification | Authors: | Chen, Jiayao Zhao, Lihua Zhou, Kun |
Keywords: | Engineering::Materials | Issue Date: | 2022 | Source: | Chen, J., Zhao, L. & Zhou, K. (2022). Improvement in the mechanical performance of Multi Jet Fusion–printed aramid fiber/polyamide 12 composites by fiber surface modification. Additive Manufacturing, 51, 102576-. https://dx.doi.org/10.1016/j.addma.2021.102576 | Journal: | Additive Manufacturing | Abstract: | Surface modification of reinforcement fibers is a potent strategy for enhancing the mechanical performance of fiber-reinfored composites. However, the strategy has rarely been applied to powder bed fusion because of the limited modification effectiveness. Here, a new surface modification method for aramid fibers (AFs) using amino-terminated hyperbranched polyamide (HBP) was proposed to improve the mechanical performance of the AF-reinforced polyamide 12 (PA12) composites printed by Multi Jet Fusion (MJF). The effect of the surface modification on the AFs was systematically examined by studying their surface morphology, chemical composition, and interfacial shear strength. The modified fibers were applied to fabricating PA12-based composite powders, which were then printed with an MJF printing testbed to reveal the effects of the fiber fraction, build orientation, and surface modification on their mechanical properties. The results showed that the surface modification of the AFs induced higher surface roughness by HBP coating and realized surface functionalization by amino groups. With the enhanced interfacial properties, the optimized AF-HBP/PA12 composite showed substantial improvement in its ultimate tensile strength and Young's modulus by 55% (73.4 MPa) and 110% (4.2 GPa), respectively, compared with the neat PA12 part. This simple and effective surface modification method can be further applied to other manufacturing technologies. | URI: | https://hdl.handle.net/10356/162048 | ISSN: | 2214-7810 | DOI: | 10.1016/j.addma.2021.102576 | Schools: | School of Mechanical and Aerospace Engineering | Research Centres: | HP-NTU Digital Manufacturing Corporate Lab | Rights: | © 2021 Elsevier B.V. All rights reserved. | Fulltext Permission: | none | Fulltext Availability: | No Fulltext |
Appears in Collections: | MAE Journal Articles |
SCOPUSTM
Citations
20
16
Updated on Mar 24, 2024
Web of ScienceTM
Citations
20
9
Updated on Oct 28, 2023
Page view(s)
91
Updated on Mar 28, 2024
Google ScholarTM
Check
Altmetric
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.