FDM快速成型工艺对成型件力学性能的影响

摘要

Taking ABS-M30,PPSF and Ultem 9085 3D printing materials as three typical cases,the plastic parts were formed through a fused deposition modeling (FDM) method,and the effect of raw materials,setting angles and printer nozzles on the mechanical properties of the parts were investigated.The results indicated that the tensile and impact strength increased at first and tended to decrease afterwards when the setting angels of printer varied from 0 ° to 90 °,and they achieved maximum values at the setting angel of 45 °.The flexural strength increased with an increase of setting angel.Moreover,the plastic parts formed by T16-type printer nozzle gained better mechanical properties than that formed by T12-type nozzle at the same position angle.%基于熔融沉积成型(FDM)技术,研究了不同材料、成型件放置角度和喷嘴型号对成型件力学性能的影响,得到具有最佳力学性能的打印工艺.分别以美国Stratasys公司生产的ABS-M30、PPSF和Ultem 9085打印材料为研究对象,采用常规填充方式,以xy平面为基准面,0°～90°范围内分别设置不同放置角度打印并测试其力学性能.结果表明,45°角放置样件的拉伸和冲击强度最佳;随着放置角度的增加,样件弯曲强度也随之增大;采用相同放置方式成型测试样件,T16喷嘴打印成型件较T12喷嘴打印成型件的力学性能更佳.