Polyphenylene sulfide (PPS) is a high-performance, low-cost special engineering polymer. The mechanical properties of three-dimensionally (3D) printed PPS samples are affected by the mass of the melt extruded filament and the printing pattern in the inner layer. The present study demonstrates the effects of the melt extrusion and filament alignment parameters on tensile, bending, and impact strengths of 3D printed PPS samples. The results indicate that by increasing the melt extrusion parameters, the tensile and bending strengths of 3D printed PPS samples can be improved and internal voids between adjacent filaments can be eliminated. However, the impact strength was restricted by excess melt extrusion. By measuring the strength of 3D printed PPS samples with different filament alignment, we observed that the tensile and bending strengths increase with decreasing angle between the filament and load direction. Moreover, the local tensile strain between adjacent filaments and slippage of the microstructure cell formed by aligning the filament are thought to absorb the impact energy. This study provides a useful guide for selection of appropriate printing parameters to realize a diverse range of mechanical properties for 3D printed PPS samples.

中文翻译：

---

打印参数对高性能聚苯硫醚三维打印力学性能的影响

聚苯硫醚（PPS）是一种高性能、低成本的特种工程聚合物。三维 (3D) 打印 PPS 样品的机械性能受熔体挤出长丝的质量和内层打印图案的影响。本研究展示了熔体挤出和长丝排列参数对 3D 打印 PPS 样品的拉伸、弯曲和冲击强度的影响。结果表明，通过增加熔体挤出参数，可以提高 3D 打印 PPS 样品的拉伸和弯曲强度，并消除相邻细丝之间的内部空隙。然而，冲击强度受到过度熔体挤出的限制。通过测量具有不同灯丝排列的 3D 打印 PPS 样品的强度，我们观察到拉伸强度和弯曲强度随着灯丝与负载方向之间的角度减小而增加。此外，相邻细丝之间的局部拉伸应变和通过对齐细丝形成的微结构单元的滑移被认为可以吸收冲击能量。本研究为选择合适的打印参数以实现 3D 打印 PPS 样品的各种机械性能提供了有用的指导。