Extrusion Temperature and Flow Rate Effects on Tensile Properties of Additively Processed Poly(Ethylene-co-Trimethylene Terephthalate)

Robert Bail

doi:10.4028/www.scientific.net/DDF.382.104

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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vol. 382Extrusion Temperature and Flow Rate Effects on...

Extrusion Temperature and Flow Rate Effects on Tensile Properties of Additively Processed Poly(Ethylene-co-Trimethylene Terephthalate)

Abstract:

This study investigated the effects of the extrusion temperature and volumetric flow rate settings in a fused filament fabrication (FFF) process on the tensile properties of specimens made of poly(ethylene-co-trimethylene terephthalate). The tensile strength almost doubled from 13.5 MPa at 230°C to 26.7 MPa at 260°C extrusion temperature, while the elongation at break improved to 5.4% and the tensile modulus rose to 641.8 MPa at the highest temperature. Similar observations were made when the extrusion flow rate was augmented to 115% of the initial value, with part strength greatly improving to 795.9 MPa and part elasticity increasing by 22%. These results illustrate two effective strategies to enhance the mechanical properties of components made in an engineering material that is increasingly being utilized in filament-based 3D printing.

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Periodical:

Defect and Diffusion Forum (Volume 382)

Pages:

104-108

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.382.104

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Online since:

January 2018

Authors:

Robert Bail*

Keywords:

ASTM D 638, FFF, Hot Melt Extrusion, Modulus, PETT, Tensile Strength

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