工艺与制造英文2024被引 7
临界ZX打印方向下3D打印碳/玻纤增强尼龙复合材料冲击强度生产参数优化
Optimization of Production Parameters for Impact Strength of 3D-Printed Carbon/Glass Fiber-Reinforced Nylon Composite in Critical ZX Printing Orientation
Selim Hartomacioğlu · Department of Mechanical Engineering, Marmara University, 34722 Istanbul, Turkey
摘要整理
增材制造(AM)方法正逐步成为大规模生产的替代方案，其中熔融沉积成型(FDM)技术处于领先地位。然而，FDM技术制造产品的层间粘合是关键问题，特别是对于平行于层面的载荷和冲击强度而言。工业应用中的大多数产品具有复杂几何形状和薄壁结构，通常需要实心填充，且必须采用ZX方向打印。本研究以工业中广泛应用的PA6为研究对象，优化其在ZX方向(平行于层面载荷)的冲击强度。该方向对力学性能至关重要，其机械特性明显低于其他方向。研究采用含15%短碳纤维和30%玻璃纤维的PA6长丝，以打印温度、层厚和热处理时间为独立变量。采用L9正交表进行实验设计，每组实验重复3次进行冲击强度测试。通过特征表征、田口优化和因素分析，结合扫描电镜(SEM)断口形貌观察，获得以下结果：纯PA6冲击强度最高，达8.9 kJ/m²；PA6 GF30为8.1 kJ/m²；PA6 CF15最低，为6.258 kJ/m²。与文献和制造商数据表对比，所获冲击强度值显著提升，表明所选实验因素及其水平，特别是喷嘴温度，具有显著影响效果。
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