Comparison of Ultem 9085 Used in Fused Deposition Modelling (FDM) with Polytherimide Blends
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Comparison of Ultem 9085 Used in Fused Deposition Modelling (FDM) with Polytherimide Blends

Cicala, Gianluca;Ognibene, Giulia;Portuesi, Salvatore;Blanco, Ignazio;Rapisarda, Mario;Pergolizzi, Eugenio;Recca, Giuseppe;
materials 2018 Vol. 11 pp. 285-
50
cicala2018comparisonmaterials

Abstract

Polyetherimide (PEI) blends modified by either polycarbonate (PC) or polyethylene terephthalate glycol-modified (PETG) were prepared. The latter modifier (PETG) was an industrial grade widely used for fused deposition modelling (FDM) printing. PEI blends were compared to Ultem 9085, which is the standard PEI grade for FDM printing in advanced applications. All the blends were thoroughly characterized in terms of their rheological, morphological, thermomechanical and tensile properties. Ultem 9085 showed improved rheology for processing over standard PEI. PEI/PC blends with 10 wt % of modifier developed here closely matched the viscosity behavior of Ultem 9085. On the other hand, the blends with low PC content (i.e., less than 20 wt %) outperformed Ultem 9085 in terms of thermal and tensile properties. When PETG was added, similar tensile properties to Ultem 9085 were found. The immiscibility for PC contents higher than 20 wt % deteriorated the tensile properties, making it less attractive for applications, although melt viscosity decreased further for increasing PC contents.

Keywords

chemistry microscopy Organic Chemistry Biology (General) Materials of engineering and construction. Mechanics of materials Engineering (General). Civil engineering (General) Technology Electrical engineering. Electronics. Nuclear engineering Descriptive and experimental mechanics Mechanical engineering and machinery Science physics

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