Compressive behavior of 3D printed MWCNT/HDPE nanocomposites

Kumar, Sumodh; R, Ramesh M.; Doddamani, Mrityunjay

doi:10.1016/j.coco.2022.101317

Cited by 12 publications

(5 citation statements)

References 9 publications

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“…Functionalized MWCNTs powder (Figure 1A) developed by carbon vapor deposition technology and acquired from Adnano Technologies in Karnataka, India, is utilized as the filler. In contrast, HDPE (HD50MA180, granules form) (Figure 1B), acquired from Indian Oil Corporation Limited (IOCL) in Mumbai, India, is used as a matrix in the current work 4,57 …”

Section: Methodsmentioning

confidence: 99%

“…The H–H5 lightweight nanocomposite filaments (2.85 mm dia. ), as shown in Figure 1D, are extruded at respective screw and roller speeds of 25.1 and 11.8 rpm 4,57 …”

Section: Methodsmentioning

confidence: 99%

“…), as shown in Figure 1D, are extruded at respective screw and roller speeds of 25.1 and 11.8 rpm. 4,57 2.3 | Three-dimensional printing of plain and functionally graded nanocomposite samples HDPE, NC, and FGNC samples are fabricated using a DE500 FFF 3D printer (nozzle diameter-0.8 mm, supplied by Deltasys E Forming, Belgaum, India), where H-H5 nanocomposite filaments are utilized as input material. The suitable printing process parameters presented in Table 1 4,57 are utilized for additive manufacturing of all the samples.…”

Section: Nanocomposite and Filament Developmentmentioning

confidence: 99%

“…4,57 2.3 | Three-dimensional printing of plain and functionally graded nanocomposite samples HDPE, NC, and FGNC samples are fabricated using a DE500 FFF 3D printer (nozzle diameter-0.8 mm, supplied by Deltasys E Forming, Belgaum, India), where H-H5 nanocomposite filaments are utilized as input material. The suitable printing process parameters presented in Table 1 4,57 are utilized for additive manufacturing of all the samples. For 3D printing of FGNC samples, filaments are fed to N1 and N2 nozzles, and 3D printing for two gradations/compositions is initiated using the printing parameters as listed in Table 1.…”

Section: Nanocomposite and Filament Developmentmentioning

confidence: 99%

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Buckling behavior of non‐uniformly heated 3D printed plain and functionally graded nanocomposites

et al. 2023

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The functionalized multi‐walled carbon nanotubes (MWCNTs) (0.5–5 wt.%) are compounded with high density polyethylene (HDPE), and, subsequently, used for extruding nanocomposite filaments to fabricate nanocomposites (NCs) and functionally graded nanocomposites (FGNCs) through 3D printing. The 3D printed NCs are investigated for coefficient of thermal expansion (CTE), and buckling under different non‐uniform temperature distributions (case‐1: left edge heating, case‐2: centre heating, and case‐3: left and right edge heating). A significant reduction in CTE is observed with MWCNT addition and gradation. The highest reduction in CTE is observed for H5 (5 wt.% of MWCNT in HDPE) NC and H1 ⟶ H3 ⟶ H5 (FGNC‐2) among the NCs and the FGNCs. It is noted that Tcr (critical buckling temperature) is highest for case‐3 and lowest for case‐2. The highest deflection is noticed in case‐2, while no significant difference is observed in case‐1 and case‐3 heating conditions. It is also observed that Tcr increases with gradation and MWCNTs addition. The H5 NC and FGNC‐2 exhibited the highest Tcr among the NCs and FGNCs, respectively. The maximum deflection is noticed for HDPE, whereas the minimum deflection is noticed for FGNC‐2 and H‐5 NC among the tested samples. The results also revealed that Tcr is very sensitive to type of heating.

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Section: Methodsmentioning

confidence: 99%

“…The H–H5 lightweight nanocomposite filaments (2.85 mm dia. ), as shown in Figure 1D, are extruded at respective screw and roller speeds of 25.1 and 11.8 rpm 4,57 …”

Section: Methodsmentioning

confidence: 99%

Section: Nanocomposite and Filament Developmentmentioning

confidence: 99%

Section: Nanocomposite and Filament Developmentmentioning

confidence: 99%

See 2 more Smart Citations

Buckling behavior of non‐uniformly heated 3D printed plain and functionally graded nanocomposites

et al. 2023

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“…The low melting point, easy formability, mechanical property versatility, and the ease with which additives can be incorporated into the host polymer have all contributed significantly to reinforced functional parts. [4][5][6][7] Acrylonitrile butadiene styrene (ABS), [8][9][10] polylactic acid (PLA), 6,[11][12][13][14][15][16][17] thermoplastic polyurethane (TPU), 8,18 polyethylene terephthalate (PET), 8,19 glycol modified polyethylene terephthalate (PETG), 12,15,[19][20][21] high-density polyethylene 22 and many more are among the most frequent polymers generated through AM. 2,[23][24][25] Each of these polymers is useful for a variety of purposes due to its unique combination of mechanical strength, thermal qualities, and other characteristics.…”

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confidence: 99%

Reinforcement‐material effects on the compression behavior of polymer composites

Jain

Upadhyay

Sahai

et al. 2023

J of Applied Polymer Sci

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Additive manufacturing technique fused filament fabrication (FFF) has found widespread usage in a variety of sectors, because of its ability to produce parts with arbitrary geometries and intricate internal structures. This study focuses on the characterization of polylactic acid (PLA) and polyethylene terephthalate glycol (PETG) composites under compressive force to learn more about how various nozzle diameter (ND) and infill pattern (IP) affect the fabricated specimens. The specimens are created with various combination of IPs (triangular, honeycomb, and rectilinear) and NDs (0.2, 0.4, and 0.6 mm) utilizing three polymer composites namely carbon fiber filled PLA (CF-PLA), carbon fiber filled PETG (CF-PETG), and multi walled carbon nano tubes filled PLA (MWCNTs-PLA). According to the findings, the higher ND improves the compressive properties of the polymer composites. The IP also has significant impact on the compressive properties of the fabricated specimens. The overall minimum compressive strength of 14.612 MPa at ND 0.2 mm and honeycomb IP for CF-PLA specimen. The overall maximum compressive strength achieved is 45.269 MPa at ND 0.6 mm and rectilinear IP for MWCNTs-PLA specimen.Therefore, the compressive strength is enhanced by 209.81% by modifying the process parameters and filament material. Based on statistical analysis using Taguchi method, the ND contributes highest, 79.61% to compressive strength of MWCNTs-PLA specimens, but for CF-PLA and CF-PETG specimens, IP contributes highest, 52.65% and 57.91%, respectively. The aforementioned findings will be extremely useful to scientists attempting to achieve sustainability through the use of polymer composites and FFF process.compressive behavior, fused filament fabrication, infill pattern, nozzle diameter, polymer composites | INTRODUCTIONAdditive manufacturing (AM) has evolved from a prototyping technique to one employed in the manufacture of finished, consumer-ready goods. Additively manufactured components are increasingly used as structural components in today's technical practise. [1][2][3] The time required to obtain a working component or assembly is drastically reduced using this method. Therefore, it is important to think about how different mechanical loads and the effects of the environment over time will affect the final part's qualities and behavior. The AM of

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4D printing of heat‐stimulated shape memory polymer composite for high‐temperature smart structures/actuators applications

Kumar,

Ojha,

Ramesh

et al. 2024

Polymer Composites

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High temperature shape memory polymers (HT‐SMPs) have great utilization in self‐deployable hinges/morphing structures for space/aerospace, and high‐temperature sensors/actuators for electronics. However, HT‐SMPs have many drawbacks, such as low stiffness, strength, thermal stability, and dynamic mechanical properties. This work aims at improving these properties of highly utilized space grade HT‐SMP, PEKK (polyether ketone ketone), by reinforcing it with low‐cost carbon fibers (CFs), and developing its composite via additive manufacturing. The additively manufactured CF/PEKK composites are annealed at 200 °C (CF/PEKK‐A200) and 250 °C (CF/PEKK‐A250), and for the first time, investigated for shape memory effect (SME). The shape fixity and the shape recovery of the CF/PEKK‐UNA (un‐annealed), CF/PEKK‐A200, and CF/PEKK‐A250 are noted to be 95.97%, 88.95%, and 86.40%, and 88.70%, 92.70%, and 95.19%, respectively with a significant weight saving potential of ⁓21%. Dispersion of CFs in PEKK and suitability of processing parameters (blending, extrusion, and 3D printing) are confirmed through scanning electron microscopy (SEM). Thermal degradation temperature () of the printed CF/PEKK composite (⁓568 °C) is found to be ⁓3.5% higher than PEKK (⁓549 °C). CF/PEKK‐A250 exhibited the highest storage modulus (4438.23 MPa), ~158% higher than PEKK (1722.3 MPa), while CF/PEKK‐A200 demonstrated the highest tensile modulus (10.9 GPa), which is 138.5% higher than PEKK (4.57 GPa) and 312.88% higher than CF/PEKK‐UNA (2.64 GPa). Moreover, CF/PEKK‐A200 exhibited 237.46%, 138.51%, 127.08%, 61.48%, 32.93%, and 50.35% higher tensile modulus than PEEK, PEKK, PEK, CF/PEK, CF/PEEK, and CF/PEKK composites, respectively, showing great potential to replace them.Highlights Printed CF/PEKK composites are investigated for shape memory behavior. The printed composites exhibited outstanding shape memory properties. Printed‐A200 exhibited 138.51% enhanced tensile modulus than pure PEKK. Also, the printed‐A200 showed 313% enhanced modulus than printed‐UNA. (568 °C) of the printed composites is found ⁓4% greater than pure PEKK.

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Compressive behavior of 3D printed MWCNT/HDPE nanocomposites

Cited by 12 publications

References 9 publications

Buckling behavior of non‐uniformly heated 3D printed plain and functionally graded nanocomposites

Buckling behavior of non‐uniformly heated 3D printed plain and functionally graded nanocomposites

Reinforcement‐material effects on the compression behavior of polymer composites

4D printing of heat‐stimulated shape memory polymer composite for high‐temperature smart structures/actuators applications

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