Flexural Properties and Fracture Behavior of CF/PEEK in Orthogonal Building Orientation by FDM: Microstructure and Mechanism

Li, Qiushi; Zhao, Wei; Li, Yongxiang; Yang, Weiwei; Gong, Wei

doi:10.3390/polym11040656

Cited by 101 publications

(60 citation statements)

References 27 publications

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“…This is because the initial printed layer, which was closer to the print bed, experienced higher temperatures, which increased the flow of the extruded melt and reduced the gaps between adjacent filaments and layers. The crossed inter-connective porous structure and inhomogeneous pore distribution was also consistent with our previous work on 3D printed PEEK and CF/PEEK parts [ 9 ].…”

Section: Resultssupporting

confidence: 90%

“…In recent years, due to advances in 3D printing, it has become possible to fabricate multifunctioning parts with complex shapes during Moon exploration missions [7][8][9][10]. Two kinds of materials can be fabricated by 3D printing on the Moon.…”

Section: Introductionmentioning

confidence: 99%

“…Schematic diagram of the fabrication and recycling of the component, lunar regolith ball milling (1), PLA recycling (2), raw material regolith and PLA melt blending, extrusion (3), 3D printing (4), final 3D printed tools (5), recycling process (6), tetrahydrofuran (THF) vapor collection (7), recycled PLA (8), recycled regolith(9).…”

mentioning

confidence: 99%

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3D Printing and Solvent Dissolution Recycling of Polylactide–Lunar Regolith Composites by Material Extrusion Approach

Han

Zhao

et al. 2020

Polymers

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The in situ resource utilization of lunar regolith is of great significance for the development of planetary materials science and space manufacturing. The material extrusion deposition approach provides an advanced method for fabricating polylactide/lunar regolith simulant (PLA/CLRS-1) components. This work aims to fabricate 3D printed PLA–lunar regolith simulant (5 and 10 wt.%) components using the material extrusion 3D printing approach, and realize their solvent dissolution recycling process. The influence of the lunar regolith simulant on the mechanical and thermal properties of the 3D printed PLA/CLRS-1 composites is systematically studied. The microstructure of 3D printed PLA/CLRS-1 parts was investigated by scanning electron microscopy (SEM) and X-ray computed tomography (XCT) analysis. The results showed that the lunar regolith simulant can be fabricated and combined with a PLA matrix utilizing a 3D printing process, only slightly influencing the mechanical performance of printed specimens. Moreover, the crystallization process of PLA is obviously accelerated by the addition of CLRS-1 because of heterogeneous nucleation. Additionally, by using gel permeation chromatography (GPC) and attenuated total reflectance Fourier transform infrared (ATR-FTIR) characterization, it is found that the 3D printing and recycling processes have a negligible influence on the chemical structure and molecular weight of the PLA/CLRS-1 composites. As a breakthrough, we successfully utilize the lunar regolith simulant to print components with satisfactory mechanical properties and confirm the feasibility of recycling and reusing 3D printed PLA/CLRS-1 components via the solvent dissolution recycling approach.

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Section: Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

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3D Printing and Solvent Dissolution Recycling of Polylactide–Lunar Regolith Composites by Material Extrusion Approach

Han

Zhao

et al. 2020

Polymers

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“…The maximal tensile, bending, and compression strength of 3D printed pure PEEK specimens are similar or even better than the reference as seen in Table 2. Carbon-fiber-reinforced PEEK performs as a substitute for traditionally processed PEEK [19,23,26].…”

Section: Resultsmentioning

confidence: 99%

Parameters Influencing the Outcome of Additive Manufacturing of Tiny Medical Devices Based on PEEK

Wang

Müller

Rumjahn³

et al. 2020

Materials

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In this review, we discuss the parameters of fused deposition modeling (FDM) technology used in finished parts made from polyether ether ketone (PEEK) and also the possibility of printing small PEEK parts. The published articles reporting on 3D printed PEEK implants were obtained using PubMed and search engines such as Google Scholar including references cited therein. The results indicate that although many have been experiments conducted on PEEK 3D printing, the consensus on a suitable printing parameter combination has not been reached and optimized parameters for printing worth pursuing. The printing of reproducible tiny-sized PEEK parts with high accuracy has proved to be possible in our experiments. Understanding the relationships among material properties, design parameters, and the ultimate performance of finished objects will be the basis for further improvement of the quality of 3D printed medical devices based on PEEK and to expand the polymers applications.

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“…Hence, it is extremely important to identify the optimum levels of fibre percentage and the size of the fibre to improve the mechanical properties of the printed parts. To study the effect of adding short fibres to the pure polymer, Li et al [ 151 ] performed an investigation by incorporating short CF in to the PEEK polymer matrix. Two specimens were printed, one in the horizontal direction and the other in the vertical direction.…”

Section: Fibre-reinforced Composite Printingmentioning

confidence: 99%

FDM-Based 3D Printing of Polymer and Associated Composite: A Review on Mechanical Properties, Defects and Treatments

2020

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Fused deposition modelling (FDM) is one of the fastest-growing additive manufacturing methods used in printing fibre-reinforced composites (FRC). The performances of the resulting printed parts are limited compared to those by other manufacturing methods due to their inherent defects. Hence, the effort to develop treatment methods to overcome these drawbacks has accelerated during the past few years. The main focus of this study is to review the impact of those defects on the mechanical performance of FRC and therefore to discuss the available treatment methods to eliminate or minimize them in order to enhance the functional properties of the printed parts. As FRC is a combination of polymer matrix material and continuous or short reinforcing fibres, this review will thoroughly discuss both thermoplastic polymers and FRCs printed via FDM technology, including the effect of printing parameters such as layer thickness, infill pattern, raster angle and fibre orientation. The most common defects on printed parts, in particular, the void formation, surface roughness and poor bonding between fibre and matrix, are explored. An inclusive discussion on the effectiveness of chemical, laser, heat and ultrasound treatments to minimize these drawbacks is provided by this review.

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Flexural Properties and Fracture Behavior of CF/PEEK in Orthogonal Building Orientation by FDM: Microstructure and Mechanism

Cited by 101 publications

References 27 publications

3D Printing and Solvent Dissolution Recycling of Polylactide–Lunar Regolith Composites by Material Extrusion Approach

3D Printing and Solvent Dissolution Recycling of Polylactide–Lunar Regolith Composites by Material Extrusion Approach

Parameters Influencing the Outcome of Additive Manufacturing of Tiny Medical Devices Based on PEEK

FDM-Based 3D Printing of Polymer and Associated Composite: A Review on Mechanical Properties, Defects and Treatments

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