工艺与制造英文2020被引 73
连续碳纤维增强复合材料3D打印工艺窗口的确定
Determining process-window for manufacturing of continuous carbon fiber-reinforced composite Using 3D-printing
Nastaran Mosleh, Amir Masoud Rezadoust, Soheil Dariushi · Iran Polymer and Petrochemical Institute
摘要整理
采用基于熔融沉积成型(FDM)的方法制造了连续碳纤维增强丙烯腈-丁二烯-苯乙烯(ABS)复合材料。3D打印前，碳纤维通过ABS-丙酮浴进行处理，制备溶液浸渍纤维(预浸料)。通过特殊单孔喷嘴同时输送碳纤维预浸料和ABS长丝，实现了连续纤维增强热塑性复合材料(CFRTCs)的打印。通过改变喷嘴直径、层高和打印速度等工艺参数，制备了不同质量的复合材料试样。利用打印复合材料的视觉评估方法确定了CFRTC稳定或不稳定打印的工艺窗口。在获得的工艺窗口内观察到四个区域：纤维毛羽或撕裂失稳、纤维扭转失稳、低质量稳定打印和高质量稳定打印。确定了CFRTCs的最优打印条件，并在该条件下制备试样进行力学性能研究。对无纤维毛羽、撕裂或扭转的视觉优化3D打印复合材料的力学和形貌性能进行了表征。结果表明，与纯ABS 3D打印样品相比，3D打印ABS-碳纤维CFRTCs的拉伸强度、弯曲强度和层间剪切强度分别提高了313%、121%和54%。
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