The application of material extrusion-based additive manufacturing methods has recently become increasingly popular in the medical sector. Thereby, thermoplastic materials are likely to be used. However, thermoplastics are highly dependent on the temperature and loading rate in comparison to other material classes. Therefore, it is crucial to characterise these influences on the mechanical properties. On this account, dynamic mechanical analyses to investigate the application temperature range, and tensile tests at different crosshead speeds (10³, 10¹, 10^-1 and 10^-3 mms^-1) were performed on various 3D-printable polymers, namely polyetheretherketone (PEEK), polylactide (PLA), poly(methyl methacrylate) (PMMA), glycol-modified poly(ethylene terephthalate) (PETG), poly(vinylidene fluoride) (PVDF) and polypropylene (PP). It was found that the mechanical properties of PEEK, PLA, PMMA and PETG hardly depend on temperature changes inside the human body. PVDF and PP show a significant decrease in stiffness with increasing body temperatures. Additionally, the dependency of the stiffness on the strain-rate is increasing between PLA, PP, PEEK, PETG, PMMA and PVDF. Besides the mechanical integrity of these materials (strength, stiffness and its strain-rate and temperature dependency inside the body), the materials were further ranked considering their filling density as a measure of their processability. Hence, useful information for the selection of possible medical applications for each material and the design process of 3D-printed implants are provided.

基于材料挤压的增材制造方法的应用近来在医学领域变得越来越流行。因此，可能使用热塑性材料。但是，与其他材料类别相比，热塑性塑料高度依赖于温度和加载速率。因此，表征这些对机械性能的影响至关重要。由于这个原因，动态力学分析，调查应用温度范围，并在不同的十字头速度拉伸试验（10 ³，10 ¹，10 ^-1和10个^-3  MMS ^-1）在各种3D可打印聚合物上进行，即聚醚醚酮（PEEK），聚丙交酯（PLA），聚（甲基丙烯酸甲酯）（PMMA），乙二醇改性的聚对苯二甲酸乙二醇酯（PETG），聚偏二氟乙烯（PVDF）和聚丙烯（PP）。发现PEEK，PLA，PMMA和PETG的机械性能几乎不依赖于人体内部的温度变化。PVDF和PP的刚度随体温的升高而显着降低。另外，在PLA，PP，PEEK，PETG，PMMA和PVDF之间，刚度对应变率的依赖性增加。除了这些材料的机械完整性（强度，刚度及其在体内的应变率和温度依赖性）外，还考虑到其填充密度作为可加工性的衡量标准，对该材料进行了进一步排名。因此，