Screw Extrusion Additive Manufacturing of Carbon Fiber Reinforced PA6 Tools
نویسندگان
چکیده
Abstract The creation of tools by additive manufacturing is becoming increasingly convenient for CFRP one-off and small batch production. Screw extrusion thermoplastic polymers has boosted the development large format solutions. Interlayer adhesion anisotropic properties a 3D printed part are indisputably key aspects tool process. In this study, thermal mechanical 40% carbon fiber reinforced polyamide 6 were determined. Moreover, influence on performance two main printing parameters, deposition temperature extruding pressure, was analyzed with respect to polymer melt rheology. material revealed highly behavior associated alignment high content. optimal process window identified in terms substrate temperature. Along print direction, no major impact tensile flexural detected, while injection molding values exceeded approximately 10%. layer estimated measuring stress at break transversely Z -oriented specimens. Higher temperatures pressures, combined lower viscosity, promote wetting bond formation between layers, ultimately leading more consistent performances. best results transverse direction achieved 140 160 °C, reaching roughly fifth longitudinal values. A significant drop detected below 120 which as minimum post-process annealing heat treatment also investigated, beneficial outcomes reported.
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ژورنال
عنوان ژورنال: Journal of Materials Engineering and Performance
سال: 2023
ISSN: ['1544-1024', '1059-9495']
DOI: https://doi.org/10.1007/s11665-023-08238-0