3D printing is a layer-by-layer forming additive manufacturing technology. Fiber reinforced polymer composites are advanced structural materials with excellent mechanical performance. Combining 3D printing technology and fiber reinforced polymer composites, this paper proposes a novel composite preparation process which will certainly promote their development and applications. This paper reviews and analyzes the current research progress and difficulties of 3D printing for fiber reinforced polymer composites, and meanwhile, presents a new 3D printing process for continuous fiber reinforced thermosetting polymer composites. This process separated the whole preparation into three independent modules, including fiber impregnating, 3D printing and pre-formed sample curing. Relevant experimental equipments were designed and built independently, and the 3D printed samples were successfully fabricated. The mechanical test results showed that the tensile strength and tensile modulus of these (52％ fiber content) specimens were 1325.14 MPa and100.28 GPa, respectively. The flexural strength and flexural modulus were 1078.03 MPa and 80.01 GPa, respectively. The interlaminar shear strength was 58.89 MPa. The mechanical performance had been greatly improved.%3D打印技术是一种逐层成形的增材制造技术, 而纤维增强树脂基复合材料是一种力学性能优异的先进结构材料, 结合3D打印的工艺先进性和纤维的材料性能优势, 提出新型的纤维增强树脂基复合材料3D打印工艺, 为进一步促进两者共同发展与应用提供了可能.综述并分析了纤维增强树脂基复合材料3D打印技术的研究现状与瓶颈, 提出了一种连续纤维增强热固性树脂基复合材料3D打印工艺, 将3D打印丝材制备、3D打印预成型体、3D打印预成型体固化分隔成3个独立的模块, 并根据不同模块设计搭建了不同的试验平台及设备, 成功制备得到了连续纤维增强热固性树脂基复合材料3D打印构件, 还测试得出其 (纤维含量为52％) 拉伸强度及拉伸模量分别达到1325.14MPa和100.28GPa;弯曲强度及弯曲模量分别为1078.03MPa和80.01GPa;层间剪切强度为58.89MPa.大幅提高了纤维增强树脂基复合材料3D打印成型构件的力学性能.
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