Abstract
Compared to the common selective laser sintering (SLS) manufacturing method, fused deposition modeling (FDM) seems to be an economical and efficient three-dimensional (3D) printing method for high temperature polymer materials in medical applications. In this work, a customized FDM system was developed for polyether-ether-ketone (PEEK) materials printing. The effects of printing speed, layer thickness, printing temperature and filling ratio on tensile properties were analyzed by the orthogonal test of four factors and three levels. Optimal tensile properties of the PEEK specimens were observed at a printing speed of 60 mm/s, layer thickness of 0.2 mm, temperature of 370 °C and filling ratio of 40%. Furthermore, the impact and bending tests were conducted under optimized conditions and the results demonstrated that the printed PEEK specimens have appropriate mechanical properties.
Highlights
Poly-ether-ether-ketone (PEEK) has received widespread attention due to the good mechanical properties, biocompatibility and elastic modulus closing to human bones, and is considered one of the most promising bone repair materials [1,2]
PEEK The materials first processing systematically investigated in mechanical this study, properties including the tensile, bending effect was of fused deposition modeling (FDM)
PEEK materials was first systematically investigated in this study, including the tensile,printing bending
Summary
Poly-ether-ether-ketone (PEEK) has received widespread attention due to the good mechanical properties, biocompatibility and elastic modulus closing to human bones, and is considered one of the most promising bone repair materials [1,2]. As demands of PEEK increase, additive manufacturing (AM) is starting to be used in the forming process of PEEK components. Selective laser sintering (SLS) is the most popular additive manufacturing technology for PEEK [3,4]. The high cost, poor penetrability and concentrated beam of laser restrict it from sintering large areas or laminates. Fused deposition modeling (FDM) is one of the most mature, popular and fastest growing three-dimensional (3D) printing methods, which are employed to produce large size medical implants. Valentan et al [5] reported that FDM has been an alternative method to process PEEK parts
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