Mechanical, Chemical, and Processing Properties of Specimens Manufactured from Poly-Ether-Ether-Ketone (PEEK) Using 3D Printing

Abstract

As part of the experiments herein, the mechanical properties of specimens made of poly-ether-ether-ketone (PEEK) material using 3D printing technology were determined. Two populations of specimens were investigated, the first of which contained an amorphous structure, while the other held a crystal structure. The studies also investigated the influence of the print directionality on the mechanical properties obtained. Static tensile, three-point bending, and impact tests were carried out. The results for the effect of the structure type on the tensile properties showed that the modulus of elasticity was approximately 20% higher for the crystal than for the amorphous PEEK form. The Poisson’s ratios were similar, but the ratio was slightly higher for the amorphous samples than the crystalline ones. Furthermore, the studies included a chemical PEEK modification to increase the hydrophilicity. For this purpose, nitrite and hydroxyl groups were introduced into the chain by chemical reactions. The results demonstrate that the modified PEEK specimens had worse thermoplastic properties than the unmodified specimens.

Influence of the Halloysite Nanotube (HNT) Addition on Selected Mechanical and Biological Properties of Thermoplastic Polyurethane

“…Injected samples were then tested using the static tensile test, hardness test, pin-on-disc, and cytotoxicity test MTT while printed samples were subjected to tensile strength tests. The 3D printing of these materials provides many advantages, including unique tailoring to a patient's needs, which is in line with the current trend of personalized medicine [27,28]. The conducted preliminary tests, including plate-tubular halloysite, proved that twin-screw extrusion provides nanocomposites with improved mechanical properties compared with the original matrix with no toxicity to normal cells [29].…”

Digital Image Correlation for stereoscopic measurement of water surface dynamics in a partially filled pipe

“…The DIC system used in this study is a Dantec Q400 (Dantec Dynamics) and the associated software Instra 4D. This system has been implemented in many studies for solid material deformation measurement (Mrówka et al 2021;Gschwandl et al 2019;Techens et al 2020;Yan et al 2019). As is shown in Fig.…”

Effect of Acid-Etching Duration on the Adhesive Performance of Printed Polyetheretherketone to Veneering Resin

“…Currently, the most widespread 3D printing technologies include selective laser sintering (SLS), fused deposition modelling (FDM), stereolithography (SLA), digital light processing (DLP), laminated object manufacturing (LOM), and so forth. Fused deposition modeling (FDM) is one representative technique of 3D printing, by squeezing the filamentous fused thermoplastic material through a digitally controlled nozzle [10,11]. The thermoplastic materials (mostly polymers) were stacked layer by layer, ending up as the ultimate shapes.…”

“…The thermoplastic materials (mostly polymers) were stacked layer by layer, ending up as the ultimate shapes. Alteration of printing direction or processing parameters would affect the mechanical properties of the final products [11].…”