Processing and Characterization of Hollow Glass-Filled Polyamide 12 Composites by Selective Laser Sintering Method

Özbay, Burçin; Serhatlı, İ. Ersin

doi:10.1080/10667857.2020.1824149

Cited by 16 publications

(8 citation statements)

References 19 publications

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“…Compared to the conventional processes, the SLS is a cost-effective and low material waste technique to create complex forms, which are difficult to fabricate with conventional techniques [4]. The as-built SLS components are known for their light-weight [5], high hardness and excellent yield, and tensile strength compared to their conventional equivalents [6]. However, the high micro-irregularities in the form of surface roughness, low ductility, and high sub-surface porosity negatively influence the overall mechanical performance of the SLS parts [7].…”

Section: Introductionmentioning

confidence: 99%

Improving the surface quality and mechanical properties of selective laser sintered PA2200 components by the vibratory surface finishing process

et al. 2021

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This paper attempts to improve the physical and mechanical properties of selective laser sintered polyamide PA2200 components through a vibratory surface finishing process by inducing severe plastic deformation at the outer surface layers. The industrial target of additive manufacturing components is to obtain structures having surface roughness, hardness, and other mechanical properties equivalent to or better than those produced conventionally. Compared to the as-built SLS PA2200 samples, vibratory surface finishing treated specimens exhibited a smooth surface microstructure and more favorable roughness, hardness, and tensile strength. Also, the duration of the vibratory surface finishing process showed a further improvement in the surface roughness and hardness of the SLS samples. Compared to the as-built state, the roughness and hardness of the surface-treated samples improved by almost 90% and 15%, respectively. Consequently, microstructural analysis indicates that lower surface roughness and enhanced surface hardness is a crucial factor in influencing the overall tensile strength of SLS-PA2200 components. We consider that the combination of VSF and SLS processes can successfully handle a wide range of potential applications. This study also highlights the efficiency and applicability of the vibratory surface finishing process to other additive manufacturing processes and materials. Graphic abstract

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Section: Introductionmentioning

confidence: 99%

Improving the surface quality and mechanical properties of selective laser sintered PA2200 components by the vibratory surface finishing process

et al. 2021

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“…This phenomenon must be considered, especially when using injection molding, since the mold must be produced considering the material shrinkage rate. This shrinkage leads to higher process costs, as a mold is needed just to process the PA [41][42][43] .…”

Section: Processingmentioning

confidence: 99%

Recent advances in the use of Polyamide-based materials for the automotive industry

et al. 2022

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Polyamide (PA) is a well-known and researched thermoplastic due to its excellent mechanical and physical properties, making it developed in the automotive sector, suitable for lighter vehicles, and, consequently, lower fuel consumption. This review manuscript presents the applications of PA-based materials in the manufacture of vehicle parts, with a description of their processing, a discussion about their thermal properties and the crystallization of polymer structure, the challenges of machining PA-based composite materials, and the feasibility of recyclability. This work aims to revise literature about the use of polyamide 6 (PA6), polyamide 66 (PA66), and polyamide 12 (PA12) and their composites reinforced with fiberglass (FG) and carbon fiber (CF) focused on the potential that these materials have as alternative materials for the automotive industry.

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“…Nowadays, HGM composites are also an object of study in additive manufacturing, such as 3D printing, to improve flow melting and thermal insulation [21] . Özbay and Serhatlı [22] studied processing and properties of different combinations of HGM filled with polyamide 12 (PA12) matrix, by Selective Laser Sintering (SLS) manufacturing method. As a result, they obtained a 20% of density reduction and a significant rise in the E-modulus with the composition PA12/HGM (80/20).…”

Section: Introductionmentioning

confidence: 99%

Effect of hollow glass microspheres addition on density reduction and mechanical properties of PA6/glass fibers composites

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Lechtman

Dias³

et al. 2022

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The strategy of combining the traditional reinforcement of glass fibers (GF) with lighter hollow glass microspheres (HGM) can afford to fulfill the need for potential light-weight and high-strength modern materials required in various sectors, such as automotive and aerospace industry applications. This work fabricated composites of PA6/GF/HGM by melting blending in a co-rotating twin-screw extruder, and subsequently, injection molded. The effects of HGM content on the density, morphological and mechanical properties were investigated and the PA6/GF/HGM composites properties were compared to the properties of the traditional PA6/GF (70/30) wt% composite, widely used today in automotive industries. With the increase of HGM amount in the formulations, a reduction of between 3 and 12% in density was achieved with a slight reduction in its mechanical properties, showing that this new strategy can be applied to replace the PA6/GF (70/30) wt% composite, providing a considerable weight reduction for these materials.

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Processing and Characterization of Hollow Glass-Filled Polyamide 12 Composites by Selective Laser Sintering Method

Cited by 16 publications

References 19 publications

Improving the surface quality and mechanical properties of selective laser sintered PA2200 components by the vibratory surface finishing process

Improving the surface quality and mechanical properties of selective laser sintered PA2200 components by the vibratory surface finishing process

Recent advances in the use of Polyamide-based materials for the automotive industry

Effect of hollow glass microspheres addition on density reduction and mechanical properties of PA6/glass fibers composites

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