工艺与制造英文2021被引 42
熔融沉积成型3D打印机正确打印PLA/连续玻纤复合材料的打印速度计算
Calculating printing speed in order to correctly print PLA/continuous glass fiber composites via fused filament fabrication 3D printer
Behnam Akhoundi, Mojtaba Nabipour, Omid Kordi, Faramarz Hajami · Tarbiat Modares University
摘要整理
本研究针对连续纤维复合材料的打印速度优化进行了创新性探索。连续纤维增强是熔融沉积成型(FFF)技术制造样品的新型增强方法。打印速度在连续纤维复合材料的打印过程中至关重要，因其对样品的几何形状，特别是拐角处的形状有显著影响。实验中采用连续玻纤(CGF)和聚乳酸(PLA)长丝分别作为增强相和基体，通过挤出型聚合物3D打印机同步进料，制备PLA/CGF复合材料。优化过程首先计算了有纤维和无纤维条件下沉积栅栏的温度变化，随后确定了打印速度与栅栏温度变化之间的特殊关系。最后基于一项假设计算出最优打印速度，该假设通过打印不同几何形状的高质量复合材料样品的结果得到验证。研究表明，打印速度的精确控制对于获得几何精度高、拐角质量好的连续纤维增强复合材料至关重要。通过建立打印速度与沉积温度的关联模型，可以指导FFF工艺参数的优化，为连续纤维复合材料的3D打印提供理论依据。
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