复合材料科学与工程Issue(5)：104-115,12.DOI:10.19936/j.cnki.2096-8000.20260528.014
3D打印连续碳纤维增强尼龙复合预浸丝材制备工艺研究
Fabrication process research of 3D-printed continuous carbon fiber reinforced nylon composite prepreg filaments
摘要
Abstract
To enhance the resin impregnation efficiency and reduce porosity in continuous fiber-reinforced ther-moplastic composites for additive manufacturing,thereby improving the mechanical properties of printed parts,this study employed a thermo-mechanical coupled process to fabricate continuous carbon fiber/nylon(CCF/PA6)prepreg filaments.Orthogonal experimental design was adopted to evaluate different parameter combinations,followed by range analysis of tensile properties,crystallinity,micromorphology,and porosity to determine the optimal forming parameters for different performance levels.Results demonstrated that fully impregnated filaments achieved a tensile strength of 691.37 MPa,a maximum crystallinity of 31.91%,and a minimum porosity of 1.28%.Furthermore,FDM printing validation using the optimized filaments revealed that lower layer thickness,reduced road spacing,and higher printing temperature significantly improved the mechanical performance of printed specimens,as confirmed by mechanical tes-ting and fracture surface analysis.关键词
碳纤维/尼龙6/复合材料/预浸丝材/拉伸性能/结晶度/孔隙率Key words
carbon fiber/nylon/composite materials/pre-impregnated filaments/tensile properties/crystal-linity/porosity分类
通用工业技术引用本文复制引用
王宇轩,连利仙,杨东,何泰君,范聪泽,宋文哲,陈芳..3D打印连续碳纤维增强尼龙复合预浸丝材制备工艺研究[J].复合材料科学与工程,2026,(5):104-115,12.基金项目
航空国创基金(010601012501) （010601012501）
