Estudo comparativo entre PETG e PLA para Impressão 3D através de caracterização térmica, química e mecânica

Santana, Leonardo; Alves, Jorge Lino; Netto, Aurélio da Costa Sabino; Merlini, Claudia

doi:10.1590/s1517-707620180004.0601

Cited by 48 publications

(54 citation statements)

References 61 publications

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“…On comparing 3D printed PETG with its injectionmolded counterparts and PLA, it is evident that the injection-molded specimens exhibited better properties due to better adhesion and uniform properties. [19] The 3D printed PETG parts showed about a 10% decrease in the overall tensile strength when compared to the injection-molded part even when printed unidirectionally at 0 . Though 3D printed PLA showed an improved tensile strength of about 6-8% as compared to their PETG counterparts in the 0 direction, their low thermal properties often limit their applicability in practical scenarios.…”

Section: Introductionmentioning

confidence: 93%

Investigation on the mechanical properties of additively manufactured PETG composites reinforced with OMMT nanoclay and carbon fibers

et al. 2021

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Polymers and their composites have undergone massive development over the years through intensive research studies. The plethora of opportunities offered by these materials is greatly complimented by the advent of additive manufacturing. The present work analyses the mechanical properties of glycol-modified polyethylene glycol (PETG) reinforced with organically modified montmorillonite (OMMT) nanoclay and short carbon fibers (SCF). This work is the first of its kind to offer a complete overview of the mechanical properties of the composites prepared by these materials through 3D printing without the application of any post-processing techniques. These materials are initially compounded and followed by extrusion using a single-screw extruder to obtain fine filaments of 1.75 mm diameter. The specimens of PETG composite filaments were 3D printed as per the ASTM standards, using fused deposition modeling technique without any post-processing. The fabricated PETG/OMMT/ SCF specimens are tested to study its tensile, compression, flexural, impact, and hardness properties. The fractured specimens from the tensile tests are analyzed using a scanning electron microscope. It is seen that the addition of OMMT nanoclay improves the properties of the composites by a significant extent for most of the tests. However, the addition of SCF has a negligible effect on the properties of the composites due to the presence of interstitial voids and poor matrix-fiber bonding. This calls for additional process parameter variations and post-processing techniques like pre-stressing, annealing, and others. These composites can be used in a wide variety of applications ranging from secondary structures in aerospace, automotive applications to minor orthotic and prosthetic applications.

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Section: Introductionmentioning

confidence: 93%

Investigation on the mechanical properties of additively manufactured PETG composites reinforced with OMMT nanoclay and carbon fibers

et al. 2021

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“…The PETG characteristics according to [7,33,42], present values for the maximum load related to the elasticity area, taking into account the variation: wall thickness, printing speed, extrusion cooling conditions and printing bed temperature. From what is presented, it is concluded that the chassis elements of ROUV are better to be made, through 3D Printing technology, from PETG.…”

Section: Considerations For Tensile Testing In Order To Choose the Mamentioning

confidence: 99%

Using PET-G to Design an Underwater Rover Through 3D PrintingTtechnology

Grigore¹,

Stefan²,

Orban³

2020

Mater. Plast.

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The development of 3D printing technologies has gained considerable momentum. Almost every technical-scientific field uses this technology. The technology of 3D printing thermoplastic materials (or fusible filaments - FFF), is based on the realization of the parts by depositing successive layers of extruded filament at temperatures corresponding to the viscous aggregation state. One of the research activities of the CERAS research center is the realization of collaborative drone systems, drones capable of moving in each of the three unstructured environments: aerial, terrestrial aquatic / underwater. This paper presents a study on the choice of the type of thermoplastic material, for making the structural elements (chassis) of an underwater Rover. The need for this study arose from the fact that the design and construction of underwater vehicles is generally demanding. The materials must be characterized by resistance to compression / stretching / shearing, as in underwater environments the existence of currents, pressures (with increasing depth of immersion). Also, the materials must be chemically neutral, because in aquatic environments we can find various chemicals spilled in water (intentional or not) and finally salinity.

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“…The construction plan used for the PB manufacturing was the XYZ plan, represented in Figure 3 below. Regarding the references of XYZ and YXZ print directions, better mechanical resistance and, at the end of the print, good dimensional precision in the printed body were achieved with FDM technology [23][24][25]. For the manufacture of PB and execution of the tensile test of this work, it was considered as a controlled parameter the density of infill in Tri-Hexagonal format, obtained by Cura Ultimaker software version 3.6.0.…”

Section: Printing Parametersmentioning

confidence: 99%

“…Parts made using three-dimensional printing have variable dimensions, as a result of the printing plane and the geometric elements. On the other hand, the components printed in the horizontal plane [22], gives better dimensional accuracy to the printed body [23,24]. That is, when printing on the XYZ plane [22], it was allowed to have the reliable dimensionally sized prosthesis parts with low R_a roughness values not exceeding 25 µm.…”

Section: Device Printingmentioning

confidence: 99%

“…For the development of the simulation finite element model to evaluate the stress concentration on the surface [31,[37][38][39][40], forces of 7.5 N were used in the distal region of the phalanges individually, according to the bibliographic orientation [19,20,23,25,35,36]. Responses to the proposed loads showed maximum stress of 13.45 MPa on the braided line near the proximal phalanges, as shown in Figure 20.…”

Section: Mechanical Feasibility Studymentioning

confidence: 99%

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Development of a Passive Prosthetic Hand That Restores Finger Movements Made by Additive Manufacturing

et al. 2020

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This work aims to develop a low-cost human hand prosthesis manufactured through additive manufacturing. The methodology used for the development of the prosthesis used affordable and low-cost materials in the market. Tensile testing was performed to estimate the mechanical properties in order to verify the resistance of the printing material used. Afterwards, the mechanical feasibility study executed on the device was performed using finite element method. In conclusion, we can observe fundamental factors that influence the 3D printing process, especially in relation to its printing parameters and mechanical properties. Maximum stress, yield stress, modulus of elasticity, elongation, and hardness are the prominent properties that should be considered when choosing the polymeric material. The numerical simulation showed that the structure of the prosthesis did not present plastic deformations to the applied loads, proving its mechanical viability.

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Estudo comparativo entre PETG e PLA para Impressão 3D através de caracterização térmica, química e mecânica

Cited by 48 publications

References 61 publications

Investigation on the mechanical properties of additively manufactured PETG composites reinforced with OMMT nanoclay and carbon fibers

Investigation on the mechanical properties of additively manufactured PETG composites reinforced with OMMT nanoclay and carbon fibers

Using PET-G to Design an Underwater Rover Through 3D PrintingTtechnology

Development of a Passive Prosthetic Hand That Restores Finger Movements Made by Additive Manufacturing

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