工艺与制造英文2023被引 14
连续纤维增强热固性聚合物复合材料的低温三维打印与固化工艺
Low‐temperature <scp>3D</scp> printing and curing process of continuous fiber‐reinforced thermosetting polymer composites
Hong Xiao, Qian He, Yugang Duan, Jie Wang, Qi Yao, Yueke Ming, Chenping Zhang, Yansong Zhu · Xi'an Jiaotong University
摘要整理
本研究开发了一套连续纤维增强热固性聚合物复合材料（CFRTPCs）在低温条件下打印与固化的方法学，以获得优异的力学性能。首先，为实现低温打印与固化，提出了由酚基环氧树脂和固化剂（F-44/2E4MZ）组成的热固性聚合物体系，并通过流变性能分析确定合理的打印温度。其次，采用非线性Vyazovkin积分法建立了树脂体系的无模型动力学（MFK）模型，该模型可通过外推法预测特征温度下的固化度曲线，据此确定合理的低温固化工艺参数。随后，利用低温三维打印工艺和低温固化工艺制备了CFRTPCs样品，纤维含量达53 wt.%。最后，力学性能测试表明拉伸强度和弯曲强度分别为1012 MPa和929 MPa。该研究进一步拓展了三维打印CFRTPCs在航空航天和国防工业中的应用潜力，这些领域同时要求高力学性能和温度安全性。
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