Experimental Researches Regarding the Manufacturing of New Thermoplastic Materials Used in Additive Technologies

Besnea, Daniel; Dinu, Elena; Moraru, Edgar; Spanu, Alina; Rizescu, Ciprian Ion; Constantin, Victor

doi:10.37358/mp.19.1.5144

Cited by 6 publications

(5 citation statements)

References 3 publications

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“…-Thermoplastic extrusion technology -FDM with Prusa i3 MK3 (Figure 3a The FDM technique is the most accessible technological variant that uses the additive approach and is based on the materialization of threedimensional structures starting from a thermoplastic filament that heats, melts and deposits layer by layer through an extrusion device on a work platform [9][10][11]. In this paper, both FDM 3D printers used to make the structures of interest used a PLA filament with a diameter of 1.75 mm and the same printing parameters.…”

Section: Methodsmentioning

confidence: 99%

“…If the molding technology [4] has been known for a long time in the respective field, the additive technologies [5] have a significant development and progress in the last period in various applications, being actively involved in the medical field [6], aerospace [7] or in applications [8] where complex and customized shapes are especially required. Currently, there are several additive manufacturing techniques that use raw materials such as thermoplastic filaments [9][10][11], photosensitive resins [11,12], plastic or metallic fine powders [13,14]. The most accessible and used especially for modeling and prototyping are thermoplastic extrusion (FDM) technology [15] and vat photopolymerization technology [16].…”

Section: Introductionmentioning

confidence: 99%

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Considerations Regarding the Applications of Additive Manufacturing for the Realization of Sealing Gaskets Used in Precision Mechanics

2023

IJOMAM

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The paper aims to analyze the possibility of obtaining the sealing gaskets for precision mechanics using additive manufacturing technologies, knowing that these technologies are viable and accessible methods for the realization of some complex shapes in a relatively short time. For this purpose, three additive methods were used: the thermoplastic extrusion technology -FDM (Fused Deposition Modeling) and the vat photopolymerization technology -the DLP (Digital Light Processing) method and the LCD (Liquid Crystal Display) method together with the post-processing station for cleaning and additional photopolymerization of the obtained structures. To achieve the sealing elements by molding, both the molds made by additive technologies and the master models to obtain the negative of the shape in molds from modellable materials that subsequently harden were considered. After making the sealing gaskets, the results for all investigated variants obtained by different methods were compared and important conclusions were drawn.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Considerations Regarding the Applications of Additive Manufacturing for the Realization of Sealing Gaskets Used in Precision Mechanics

2023

IJOMAM

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“…Over the years, the properties of PLA materials have been the subject of extensive researches [9][10][11][18][19][20][21]. The properties of PLA depend on its isomers, processing temperature and cooling time [10,11].…”

mentioning

confidence: 99%

Tensile Behavior of PLA and PLA Composite Materials Under Different Printing Parameters

Dobrescu¹,

Pascu²,

Jiga³

et al. 2019

Mat.Plast.

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Polylactic acid (PLA) is one of the most extensively used biodegradable aliphatic polyester produced from renewable resources, such as corn starch. Due to its qualities, PLA is a leading biomaterial for numerous applications in medicine as well as in industry, replacing conventional petrochemical - based polymers. The purpose of this paper is to highlight the mechanical properties, such as tensile stress, of pure PLA specimens in comparison with PLA based-composites, with three different added materials in PLA mass: Copper, Aluminum and Graphene, as well as the influence of filament angle deposition on these properties. In order to check if the the filling density of the specimen influences the ultimate tensile stress (UTS), three different filling percentages (60%, 80% and 100%) have been chosen in the experimental tests. In this context, the mechanical characteristics of four different filament types based on PLA material, starting from pure PLA to PLA with Aluminum, Copper or Graphene filler are compared. Understanding and controlling these parameters is essential for the successful use of PLA and PLA-based composites in different areas such as medical applications, sport equipments and light industry.These tests have been performed due to the fact there is a lack of information concerning the mechanical properties. In the scientific literature, such information is only available for expensive printing systems; for open source printers (as those used in these tests), the information is poor and for some new materials, even inexistant. According to the technical specifications, for an expensive printer the cost may exceed 3000 Euros, with a minimum layer resolution of 100 m, this type of printer can reliably reproduce many 3D objects accurately, in quiter conditions.

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“…The current research deals with the design and use of plastic material for the knee prosthesis. The research is also based on the use of Rapid Prototyping technique [1][2][3][4][5][6][7][8][9].…”

mentioning

confidence: 99%

Additive Manufactured Bioplastics for Conceptual Models of Knee Customized Prostheses

Prisecaru¹,

Besnea²,

Moraru³

et al. 2019

Mat.Plast.

Self Cite

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The article presents a promising technology for medical applications - additive technology by thermoplastic extrusion. Some conceptual models for knee prostheses of different constructional forms have been made using FDM technology. Different materials, including biocompatible, were considered and different 3D printing equipment was used to choose the variant with the most optimal characteristics. These conceptual models can have various beneficial applications in medicine, improving the quality and functionality of personalized prostheses.

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Experimental Researches Regarding the Manufacturing of New Thermoplastic Materials Used in Additive Technologies

Cited by 6 publications

References 3 publications

Considerations Regarding the Applications of Additive Manufacturing for the Realization of Sealing Gaskets Used in Precision Mechanics

Considerations Regarding the Applications of Additive Manufacturing for the Realization of Sealing Gaskets Used in Precision Mechanics

Tensile Behavior of PLA and PLA Composite Materials Under Different Printing Parameters

Additive Manufactured Bioplastics for Conceptual Models of Knee Customized Prostheses

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