Selective laser sintering and multi jet fusion: Process-induced modification of the raw materials and analyses of parts performance

Sillani, Francesco; Kleijnen, Rob G.; Vetterli, Marc; Schmid, Manfred; Wegener, Konrad

doi:10.1016/j.addma.2019.02.004

Cited by 71 publications

(102 citation statements)

References 7 publications

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“…[160] Surprisingly, several studies reported that the specimens that are built in the z-direction exhibited higher tensile modulus and strength than those built in the x-or y-directions, contrary to what is typically observed with SLS. [159,161] It is conjectured here that this phenomenon is attributed to the diffusion of the fusing agent along the z-direction due to gravitational force, which creates a continuous transmission of thermal energy into the previous layer, thus promoting better melting and adhesion across the interlayers (z-direction) than within the layer planes (x-and y-directions). Nevertheless, investigations on the MJF process are limited and further studies on its underlying process mechanisms are required.…”

Section: (26 Of 54)mentioning

confidence: 99%

Recent Progress on Polymer Materials for Additive Manufacturing

Tan

Zhu

Zhou

2020

Adv Funct Materials

443

238

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Additive manufacturing (AM) is the process of printing 3D objects in a layer-by-layer manner. Polymers and their composites are some of the most widely used materials in modern industries and are of great interest in the field of AM due to their vast potential for various applications, especially in the medical, aerospace, and automotive industries. Many studies have been conducted to develop new polymer materials for AM techniques, which include vat photopolymerization, material jetting, powder bed fusion, material extrusion, binder jetting, and sheet lamination. Although several reviews on the development of polymer materials for AM have been published, most of them only focus on a specific application, process, or type of material. Therefore, this article serves to provide a comprehensive review on the progress in polymer material development for AM techniques. It begins with an introduction to different AM techniques, followed by highlighting the progress of their development. Material requirements, notable advances in newly developed materials and their potential applications are discussed in detail and summarized. This review concludes by identifying the major challenges currently encountered in using AM for polymer materials and providing insights into the valuable opportunities it presents, in hopes of spurring further development in this field.

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Section: (26 Of 54)mentioning

confidence: 99%

Recent Progress on Polymer Materials for Additive Manufacturing

Tan

Zhu

Zhou

2020

Adv Funct Materials

443

238

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“…Polyamide 12 (PA12), as a semicrystalline polymer, has low water absorption, good dimensional stability, low melting temperature, and wide laser sintering window. It is one of the most widely used raw materials in SLS 3D‐printing technology currently . However, its own thermal insulation property cannot meet the demand for the higher thermal conductivity in the electrical engineering, heat transfer engineering, and other areas.…”

Section: Introductionmentioning

confidence: 99%

Solid‐state shear milling method to prepare PA12/boron nitride thermal conductive composite powders and their selective laser sintering 3D‐printing

Yang

Wang

Chen

2019

J of Applied Polymer Sci

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The selective laser sintering (SLS) is one of the most important 3D‐printing technologies. However, the challenges in SLS could be in the limited high material cost and single material performance. Development of high‐performance and multifunctional copowders suitable for SLS is of great importance. Here, polyamide 12 (PA12)/boron nitride (BN) thermal conductive copowders suitable for SLS were successfully prepared through solid state shear milling (S3M) technology in combination with cryogenic pulverization technology. The particle size, morphology, grafting reaction between PA12 and BN, rheology behavior, and coalescence behavior of the obtained PA12/BN copowders were carefully investigated. The optimal amount of silica flow additive (0.5 wt %) was determined to achieve the good powder flowability. Under the optimum 3D‐printing conditions, the fabrication of parts with high BN loading could be achieved. When BN content was at 40 wt %, the flexural strength could reach 10.6 MPa and the thermal conductivity could reach 0.55 W/m·k, 77% higher than that of pure PA12. After treated with phenolic epoxy resin, the tensile strength and flexural strength of the printed parts with 40 wt % BN loading could reach 14.2 and 25.6 MPa, which were 130 and 115% higher than those of the untreated 3D‐printed parts, respectively. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48766.

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“…To achieve both high-resolution and high-throughput manufacturing, a multiscale and multi-print speed 3D-printing process is desired to print microscale features with a high-resolution and the rest of the part at a high speed. Powder-based 3D printing is well-suited for industrial scale manufacturing due to its high throughout, high scalability, post-printing processability and wide material selection [ 7 , 24 , 29 , 48 , 63 , 64 , 65 , 66 , 67 ]. However, industrial powder-based 3D-printers are often limited by the lack of transparent material and relatively low printer resolution and accuracy [ 17 , 41 , 44 , 62 , 68 ].…”

Section: Introductionmentioning

confidence: 99%

Powder-Based 3D Printing for the Fabrication of Device with Micro and Mesoscale Features

et al. 2020

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Customized manufacturing of a miniaturized device with micro and mesoscale features is a key requirement of mechanical, electrical, electronic and medical devices. Powder-based 3D-printing processes offer a strong candidate for micromanufacturing due to the wide range of materials, fast production and high accuracy. This study presents a comprehensive review of the powder-based three-dimensional (3D)-printing processes and how these processes impact the creation of devices with micro and mesoscale features. This review also focuses on applications of devices with micro and mesoscale size features that are created by powder-based 3D-printing technology.

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Selective laser sintering and multi jet fusion: Process-induced modification of the raw materials and analyses of parts performance

Cited by 71 publications

References 7 publications

Recent Progress on Polymer Materials for Additive Manufacturing

Recent Progress on Polymer Materials for Additive Manufacturing

Solid‐state shear milling method to prepare PA12/boron nitride thermal conductive composite powders and their selective laser sintering 3D‐printing

Powder-Based 3D Printing for the Fabrication of Device with Micro and Mesoscale Features

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