Towards sustainability in 3D printing of thermoplastic composites: Evaluation of recycled carbon fibers as reinforcing agent for FDM filament production and 3D printing

Giani, Niccolò; Mazzocchetti, Laura; Benelli, Tiziana; Picchioni, Francesco; Giorgini, Loris

doi:10.1016/j.compositesa.2022.107002

Cited by 48 publications

(17 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 6 shows the DSC heating curves of the printed PLA and NFRC specimens, while the corresponding thermal parameters are summarized in Table 3 . The first peak at ~120 °C ( Figure 6 ) corresponds to a broad exothermic transition of low intensity associated with the cold crystallization of a semicrystalline polymer [ 57 ]. In addition, this peak shows that during PLA and NFRC heating, a reorganization of the amorphous domains could occur, promoting crystalline structure formation.…”

Section: Resultsmentioning

confidence: 99%

Tensile Behavior of 3D Printed Polylactic Acid (PLA) Based Composites Reinforced with Natural Fiber

et al. 2022

View full text Add to dashboard Cite

Natural fiber-reinforced composite (NFRC) filaments for 3D printing were fabricated using polylactic acid (PLA) reinforced with 1–5 wt% henequen flour comprising particles with sizes between 90–250 μm. The flour was obtained from natural henequen fibers. NFRCs and pristine PLA specimens were printed with a 0° raster angle for tension tests. The results showed that the NFRCs’ measured density, porosity, and degree of crystallinity increased with flour content. The tensile tests showed that the NFRC Young’s modulus was lower than that of the printed pristine PLA. For 1 wt% flour content, the NFRCs’ maximum stress and strain to failure were higher than those of the printed PLA, which was attributed to the henequen fibers acting as reinforcement and delaying crack growth. However, for 2 wt% and higher flour contents, the NFRCs’ maximum stress was lower than that of the printed PLA. Microscopic characterization after testing showed an increase in voids and defects, with the increase in flour content attributed to particle agglomeration. For 1 wt% flour content, the NFRCs were also printed with raster angles of ±45° and 90° for comparison; the highest tensile properties were obtained with a 0° raster angle. Finally, adding 3 wt% content of maleic anhydride to the NFRC with 1 wt% flour content slightly increased the maximum stress. The results presented herein warrant further research to fully understand the mechanical properties of printed NFRCs made of PLA reinforced with natural henequen fibers.

show abstract

Section: Resultsmentioning

confidence: 99%

Tensile Behavior of 3D Printed Polylactic Acid (PLA) Based Composites Reinforced with Natural Fiber

et al. 2022

View full text Add to dashboard Cite

show abstract

“…SEM images also show that CF are alignment in the direction of extrusion flow, creating an almost unidirectional enhancement inside the filament. 33,34 In Figure 4F, it is clearly that the CF is embedded in PEI matrix, the surface of CF is smooth and pores still exist between the fiber and the matrix, which indicates that the interfacial bonding between CF and the matrix is weak.…”

Section: Effect Of Cf On the Thermal And Mechanical Properties Of Pei...mentioning

confidence: 99%

Enhancement on the mechanical properties of 3D printing PEI composites via high thermal processing and fiber reinforcing

Zhang

Wang

Jia

et al. 2023

Polymers for Advanced Techs

View full text Add to dashboard Cite

Polyetherimide (PEI) is a high‐performance material that maintains good properties at high temperature. Combining PEI with 3D printing is helpful to broaden the application of PEI, but the printed PEI parts have poor mechanical properties due to its interlayer porous structure. Herein, high thermal processing (cavity and platform temperature) is utilized to improve the bonding of PEI filaments during 3D printing. After optimizing, the mechanical properties of printed PEI parts can reach to the performance of injected PEI. Moreover, carbon fiber (CF) is used to further enhance the thermal and mechanical properties of PEI. The results show that the mechanical enhancement of short length CF (0.15 mm) is less effective than the longer CF (3 mm‐CF). After the CF oxidation treatment, the tensile strength of printed PEI is increased by nearly 6.07% compared to the untreated CF/PEI. The work provides a novel approach for developing 3D printed CF/PEI composites for the further application.

show abstract

“…The aim of this paper is to develop low-cost raw feedstock and products out of waste composite material, while retaining as much as possible of the mechanical advantage that composites provide. In contrast to thermoset resins, which are difficult to recycle and dispose of, thermoplastic matrix resins are easy to recycle since they are typically remeltable [4]. To explore recycling technologies and protocols, sample off-cut fabrics of glass fibre-reinforced polypropylene (GFRPP) were obtained from a composite manufacturer.…”

Section: Extended Abstractmentioning

confidence: 99%

Recovery of Particle Reinforced Composite 3D Printing Filament from Recycled Industrial Polypropylene and Glass Fibre Waste

Sam-Daliri¹,

Flanagan²,

Ghabezi³

et al. 2022

World Congress on Mechanical, Chemical, and Material Engineering

View full text Add to dashboard Cite

Towards sustainability in 3D printing of thermoplastic composites: Evaluation of recycled carbon fibers as reinforcing agent for FDM filament production and 3D printing

Cited by 48 publications

References 46 publications

Tensile Behavior of 3D Printed Polylactic Acid (PLA) Based Composites Reinforced with Natural Fiber

Tensile Behavior of 3D Printed Polylactic Acid (PLA) Based Composites Reinforced with Natural Fiber

Enhancement on the mechanical properties of 3D printing PEI composites via high thermal processing and fiber reinforcing

Recovery of Particle Reinforced Composite 3D Printing Filament from Recycled Industrial Polypropylene and Glass Fibre Waste

Contact Info

Product

Resources

About