scholarly journals The Effects of Build Parameters and Strain Rate on the Mechanical Properties of FDM 3D-Printed Acrylonitrile Butadiene Styrene

2019 ◽  
Vol 09 (01) ◽  
pp. 1-27 ◽  
Author(s):  
Kemar Hibbert ◽  
Grant Warner ◽  
Celeste Brown ◽  
Olusegun Ajide ◽  
Gbadebo Owolabi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Strain Rate ◽  
Acrylonitrile Butadiene Styrene ◽  
3D Printed ◽  
Butadiene Styrene

scholarly journals Print Velocity Effects on Strain-Rate Sensitivity of Acrylonitrile-Butadiene-Styrene Using Material Extrusion Additive Manufacturing

Polymers ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 149
Author(s):  
Wilco M. H. Verbeeten ◽  
Rob J. Arnold-Bik ◽  
Miriam Lorenzo-Bañuelos
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
Strain Rate ◽  
Yield Stress ◽  
Strain Rate Sensitivity ◽  
Molecular Orientation ◽  
Activation Volume ◽  
Rate Sensitivity ◽  
Acrylonitrile Butadiene Styrene ◽  
Butadiene Styrene

The strain-rate sensitivity of the yield stress for Acrylonitrile-Butadiene-Styrene (ABS) tensile samples processed via material extrusion additive manufacturing (ME-AM) was investigated. Such specimens show molecular orientation and interstitial voids that affect the mechanical properties. Apparent densities were measured to compensate for the interstitial voids. Three different printing speeds were used to generate ME-AM tensile test samples with different molecular orientation. Printing velocities influenced molecular orientation and stretch, as determined from thermal shrinkage measurements. Likewise, infill velocity affected the strain-rate dependence of the yield stress. The ABS material manifests thermorheollogically simple behavior that can correctly be described by an Eyring flow rule. The changing activation volume, as a result of a varying print velocity, scales linearly with the molecular orientation, as captured in an estimated processing-induced pre-strain. Therefore, it is suggested that ME-AM processed ABS shows a deformation-dependent activation volume. This paper can be seen as initial work that can help to improve quantitative predictive numerical tools for ME-AM, taking into account the effects that the processing step has on the mechanical properties.

scholarly journals Effects of In-Process Temperatures and Blending Polymers on Acrylonitrile Butadiene Styrene Blends

Inventions ◽  
2021 ◽  
Vol 6 (4) ◽  
pp. 93
Author(s):  
Muhammad Harris ◽  
Johan Potgieter ◽  
Hammad Mohsin ◽  
Karnika De Silva ◽  
Marie-Joo Le Guen
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Large Scale ◽  
Acrylonitrile Butadiene Styrene ◽  
Fused Deposition Modelling ◽  
Fused Deposition ◽  
High Thermal Resistance ◽  
3D Printed ◽  
First Time ◽  
Butadiene Styrene

Acrylonitrile butadiene styrene (ABS) is a renowned commodity polymer for additive manufacturing, particularly fused deposition modelling (FDM). The recent large-scale applications of 3D-printed ABS require stable mechanical properties than ever needed. However, thermochemical scission of butadiene bonds is one of the contemporary challenges affecting the overall ABS stability. In this regard, literature reports melt-blending of ABS with different polymers with high thermal resistance. However, the comparison for the effects of different polymers on tensile strength of 3D-printed ABS blends was not yet reported. Furthermore, the cumulative studies comprising both blended polymers and in-process thermal variables for FDM were not yet presented as well. This research, for the first time, presents the statistical comparison of tensile properties for the added polymers and in-process thermal variables (printing temperature and build surface temperature). The research presents Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA) to explain the thermochemical reasons behind achieved mechanical properties. Overall, ABS blend with PP shows high tensile strength (≈31 MPa) at different combinations of in-process parameters. Furthermore, some commonalities among both blends are noted, i.e., the tensile strength improves with increase of surface (bed) and printing temperature.

scholarly journals Mechanical Properties of 3D-Printed Acrylonitrile–Butadiene–Styrene TiO2 and ATO Nanocomposites

Polymers ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1589 ◽  
Author(s):  
Nectarios Vidakis ◽  
Markos Petousis ◽  
Athena Maniadi ◽  
Emmanuel Koudoumas ◽  
Marco Liebscher ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Performance ◽  
Sno2 Nanoparticles ◽  
Three Dimensional ◽  
Acrylonitrile Butadiene Styrene ◽  
International Standards ◽  
Fused Filament Fabrication ◽  
Melt Mixing ◽  
3D Printed ◽  
Butadiene Styrene

In order to enhance the mechanical performance of three-dimensional (3D) printed structures fabricated via commercially available fused filament fabrication (FFF) 3D printers, novel nanocomposite filaments were produced herein following a melt mixing process, and further 3D printed and characterized. Titanium Dioxide (TiO2) and Antimony (Sb) doped Tin Oxide (SnO2) nanoparticles (NPs), hereafter denoted as ATO, were selected as fillers for a polymeric acrylonitrile butadiene styrene (ABS) thermoplastic matrix at various weight % (wt%) concentrations. Tensile and flexural test specimens were 3D printed, according to international standards. It was proven that TiO2 filler enhanced the overall tensile strength by 7%, the flexure strength by 12%, and the micro-hardness by 6%, while for the ATO filler, the corresponding values were 9%, 13%, and 6% respectively, compared to unfilled ABS. Atomic force microscopy (AFM) revealed the size of TiO2 (40 ± 10 nm) and ATO (52 ± 11 nm) NPs. Raman spectroscopy was performed for the TiO2 and ATO NPs as well as for the 3D printed nanocomposites to verify the polymer structure and the incorporated TiO2 and ATO nanocrystallites in the polymer matrix. The scope of this work was to fabricate novel nanocomposite filaments using commercially available materials with enhanced overall mechanical properties that industry can benefit from.

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