工艺与制造英文2021被引 5
基于聚酰亚胺粘结剂和连续碳纤维的3D打印复合材料的开发
Development of new composite materials for 3D-printing based on polyimide binders and continuous carbon fiber
Darya S. Alexandrova, Marina Bogdanovskaya, Anton Yegorov, Yakov S. Vygodsky · Kurchatov Institute
摘要整理
连续纤维增强复合材料的三维打印需要与耐热基体相适配的预浸料。本研究系统调查了碳纤维与聚合物粘结剂之间粘接强度的影响因素。通过开发偶联剂化合物，促进纤维与聚合物的浸渍并改善纤维-粘结剂界面粘接。采用多种聚酰亚胺基体合成热塑性粘结剂，通过热重分析（TGA）、差示扫描量热法（DSC）和接触角测量等方法表征聚合物性能。随后对材料进行溶液浸渍处理以制备适用于3D打印的预浸料样品，并利用扫描电子显微镜（SEM）评估浸渍质量。将性能最优的预浸料用于3D打印试验件。相比传统环氧树脂基预浸料仅适用于低温应用，聚酰亚胺基预浸料具有优异的耐高温性能和耐腐蚀介质能力。聚酰亚胺作为一类高分子材料，在高温下保持良好的热稳定性。基于聚酰亚胺的预浸料及与熔融沉积成型（FDM）3D打印工艺相适配的热塑性聚酰亚胺基体，可实现高温耐受性与强度的有机结合，满足航空航天等高端应用领域对高性能复合材料的需求。
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