工艺与制造英文2024被引 2
连续碳纤维增强酚醛树脂复合材料原位固化3D打印工艺参数设计
Parameter design of continuous carbon fiber-reinforced phenolic resin composites via in situ-curing 3D printing technology
Wencai Dong, Chonggao Bao, Rongzhen Liu, Shijia Li · Xi'an Jiaotong University
摘要整理
为改善打印质量和力学性能，基于原位固化3D打印技术，系统研究了连续碳纤维增强酚醛树脂（CF/PF）复合材料的工艺参数。打印间距和打印厚度影响纤维束之间的粘结性能。在优化工艺参数下，CF/PF复合材料表面光滑平整，相邻预浸料层和打印层之间无明显间隙。重点优化了树脂浸渍温度（Ti），分析了其对力学性能的影响机制。随着浸渍温度升高，树脂含量和施加于纤维束的挤压力降低，而纤维与树脂间的润湿性提高。树脂含量和挤压力对CF/PF复合材料力学性能的影响更为显著。在上述因素的综合作用下，当浸渍温度为30°C、打印间距为0.80 mm、打印厚度为0.10 mm时，CF/PF复合材料的弯曲强度达到最大值471.1 MPa，缺陷体积最小，纤维与树脂分布均匀，纤维/树脂相互作用适宜。
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