Process Simulation and Experiments for PEEK 3D Printing Technology
SHI Changchun1 HU Bin1 CHEN Dingfang2 CHEN Rong3 SHAN Bin1
1.School of Materials Science and Engineering，Huazhong University of Science and Technology，
2.Intelligent Manufacture and Control Institute，Wuhan Institute of Technology，Wuhan，430063
3.HUST⁃Wuxi Research Institute，Wuxi，Jiangsu，214174
Abstract： The medical PEEK components with high performance were difficult to process because they displayed intricate structure. To deal with the problems，the research of PEEK RP was conducted based on the fused deposition modeling（FDM）3D printing technology. In particular，the design of high temperature chamber，analog simulation and process experiments were carried out accordingly. The sim⁃ ulation results show that the warping deformation phenomenon of PEEK sample may be greatly sup⁃ pressed obviously through the applications of the prototyping chamber with the temperature close to the glass transition temperature of PEEK . Moreover，PEEK filament may melt uniformly through the appli⁃ cations of the nozzles with smaller diameters，which makes sure that the PEEK filament span steadily. The experimental data show that the highest average tensile strength of PEEK sample achieves about 74.74 MPa when using the nozzle diameter of 4 mm and the layer thickness of 0.1 mm during the PEEK 3D printing processes. The values are close to the tensile strength of the PEEK sample processed through the traditional injection molding.
Key words： polyethoretheretherketone（PEEK）；rapid prototyping（RP）；analog simulation；pro⁃ cess experiment