Investigations of the Mechanical Properties of DLP 3D Printed Graphene/Resin Composites

Hanon, Muammel M.; Ghaly, Arsany; Zsidai, László; Szakál, Zoltán; Szabó, I.A.; Kátai, László

doi:10.12700/aph.18.8.2021.8.8

Cited by 24 publications

(11 citation statements)

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“…The analysis of the obtained values led to an average value of 46 MPa for the maximum tensile test: higher than the value provided by the Markforged datasheet (37 MPa). This datasheet’s underestimation has been also noticed in other papers [ 31 , 36 ]. The composite laboratory of Aarhus University provided an extended datasheet of ONYX, based on their research [ 37 ].…”

Section: Resultssupporting

confidence: 83%

“…HTP and HTS 3D-printed materials showed reasonable performances in both tensile and three-point bending static regimes, higher than previously reported values for similar photopolymer resins [ 36 ]. Photocentric’s HTS 3D-printed material confirms the tensile elongation at break of 4.8% from the datasheet, although the ultimate tensile strength is 20% lower than reported values, possibly due to different printing parameters and testing methods.…”

Section: Resultscontrasting

confidence: 52%

“…HTS 3D-printed material displays high tensile strength and elongation comparable to acrylics and polyimides, providing minimal shrinkage and high-accuracy printed parts. HTP 3D-printed material is a temperature-resistant resin, with experimentally determined transition temperature around 175 °C and a deflection temperature around 230 °C, assuring both high strength and stiffness compared to other photopolymers [ 36 , 39 ]. Likewise, compared with ONYX material, both printing directions for HTP and HTS 3D-printed materials were stronger and stiffer under static mechanical solicitations.…”

Section: Resultsmentioning

confidence: 99%

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Investigation into Thermomechanical Response of Polymer Composite Materials Produced through Additive Manufacturing Technologies

et al. 2022

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This paper presents the static mechanical behavior and the dynamic thermomechanical properties of four market-available reinforced and non-reinforced thermoplastics and photopolymer materials used as precursors in different additive manufacturing technologies. This article proposes a characterization approach to further address development of aeronautic secondary structures via 3D-printed composite materials replacing conventional manufactured carbon fiber reinforced polymer (CFRP) composites. Different 3D printing materials, technologies, printing directions, and parameters were investigated. Experimental results showed that carbon-reinforced ONYX_R material exhibits a transition point at 114 °C, a 600 MPa tensile strength, and an average tensile strain of 2.5%, comparable with conventional CFRP composites manufactured via autoclave, making it a suitable candidate for replacing CFRP composites, in the aim of taking advantage of 3D printing technologies. ONYX material exhibits higher stiffness than Acrylonitrile-Butadiene-Styrene Copolymer (ABS), or conventional Nylon 6/6 polyamide, the flexural modulus being 2.5 GPa; nevertheless, the 27 °C determined transition temperature limits its stability at higher temperature. Daylight High Tensile (further called HTS) resin exhibits a tensile strength and strain increase when shifting the printing direction from transversal to longitudinal, while no effect was observed in HighTemp DL400 resin (further called HTP).

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Section: Resultssupporting

confidence: 83%

Section: Resultscontrasting

confidence: 52%

Section: Resultsmentioning

confidence: 99%

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Investigation into Thermomechanical Response of Polymer Composite Materials Produced through Additive Manufacturing Technologies

et al. 2022

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“…Zhang et al [ 85 ] reported an optimum layer thickness of 50 μm for both DLP and SLA, with the printing accuracy increasing as layer thickness decreases. This value of layer thickness was also recommended by Ibrahim et al [ 86 ] and Hanon et al [ 87 ] for 3D‐printed parts by DLP technique. In addition, small layer thickness results enhance the mechanical strengths of 3D‐printed parts.…”

Section: Common Factors Influencing Printability and Properties Of 3d...mentioning

confidence: 59%

Vat Photopolymerization Additive Manufacturing Technology for Bone Tissue Engineering Applications

2022

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Additive manufacturing has transformed the perspective of producing three dimensions (3D) objects toward achieving high quality in terms of accuracy, resolution, and high mechanical integrity with excellent surface finishing in little time compared to subtractive (traditional) production. Vat photopolymerization (VPP) additive manufacturing is among the most common 3D printing technology used in the medical field, academic research, and industrial production of 3D parts. Four main 3D printing techniques fall under VPP, namely continuous liquid interface production (CLIP), daylight polymer printing (DPP), stereolithography (SLA), and digital light processing (DLP). The last two are the focus of the present article. The high accuracy, precision, the unique ability to produce highly complex porous structural geometries, the low printing cost, and the production time of 3D structures compared to subtractive 3D manufacturing make DLP and SLA suitable for medical applications, specifically in regenerative medicine. This review presents the recent trend of DLP and SLA as used in medical research related to bone tissue engineering highlighting the mechanical and biological properties of the resulting 3D bone structures. In addition, photopolymerization mechanisms, photocurable materials, and the working principles of DLP and SLA are introduced.

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“…However, the use of graphene nanostructures does not always lead to the expected increase in the properties of the final composites. In [ 14 ], the authors showed that the introduction of 0.5 and 1 wt. % GNP only resulted in a deterioration in Young’s modulus, tensile strength, and other strength characteristics compared to pure rubber.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Few-Layer Graphene on the Complex of Hardness, Strength, and Thermo Physical Properties of Polymer Composite Materials Produced by Digital Light Processing (DLP) 3D Printing

et al. 2023

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The results of studying the effect of particles of few-layer graphene (FLG) synthesized by self-propagating high-temperature synthesis (SHS) on the complex of strength and thermo physical properties of polymer composite products obtained by digital light processing (DLP) 3D printing are presented. It was discovered to achieve an increase in thermophysical and strength parameters of polymers modified by FLG compared with samples made on the unmodified base resin. This result was achieved due to low defectiveness, namely the absence of Stone–Wales defects in the structure of FLG due to the homogeneous distribution of FLG over the volume of the polymer in the form of highly dispersed aggregates. It was possible to increase hardness by 120%, bending strength by 102%, Charpy impact strength by 205%, and thermal conductivity at 25 °C by 572% at concentrations of few-layer graphene of no more than 2 wt. %.

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Investigations of the Mechanical Properties of DLP 3D Printed Graphene/Resin Composites

Cited by 24 publications

References 0 publications

Investigation into Thermomechanical Response of Polymer Composite Materials Produced through Additive Manufacturing Technologies

Investigation into Thermomechanical Response of Polymer Composite Materials Produced through Additive Manufacturing Technologies

Vat Photopolymerization Additive Manufacturing Technology for Bone Tissue Engineering Applications

The Effect of Few-Layer Graphene on the Complex of Hardness, Strength, and Thermo Physical Properties of Polymer Composite Materials Produced by Digital Light Processing (DLP) 3D Printing

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