On the use of high viscosity polymers in the fused filament fabrication process. Issue 4 (20th June 2017)

• Record Type: Journal Article
• Authors: Khaliq, Muhammad Hussam; Gomes, Rui; Fernandes, Célio; Nóbrega, João; Carneiro, Olga Sousa; Ferrás, Luis Lima
• Is Part Of: Rapid prototyping journal. Volume 23:Issue 4(2017)
• Page Start: 727
• Page End: 735
• Publication Date: 2017-06-20
• Subjects: Printing -- Fused deposition modelling -- 3D; Engineering design -- Periodicals; 620.004205
• DOI: 10.1108/RPJ-02-2016-0027
• Languages: English
• ISSNs: 1355-2546

Abstract

Abstract : Purpose: This work aims to provide additional insights regarding the practicability of using conventional materials in the fused filament fabrication (FFF) process. Design/methodology/approach: Two different acrylonitryle butadiene styrene (ABS) grades are studied and compared, aiming to check to what extent the regular ABS developed for conventional polymer processing, with a different rheology than the one provided for the FFF process, can also be used in this process (FFF). Findings: The rheological results show that a general-purpose ABS (ABS-GP) melt is much more viscous and elastic than ABS-FFF. It is clear that using ABS-GP as feedstock material in the FFF process results in poor coalescence and adhesion between the extruded filaments, which has a detrimental effect on the mechanical properties of the printed specimens. Despite its lower performance, ABS-GP can be a good choice if the objective is to produce an aesthetical prototype. If the objective is to produce a functional prototype or a final part, its mechanical performance requirements will dictate the choice. Originality/value: This work provides insightful information regarding the use of high viscosity materials on the 3D printing process.