复合材料科学与工程Issue(2)：104-110,129,8.DOI:10.19936/j.cnki.2096-8000.20260228.015
热处理工艺对3D打印连续纤维增强复合材料层间性能的影响
The effects of heat treatment process on the interface properties of 3D-printed continuous fiber reinforced composites
摘要
Abstract
3D-printed continuous carbon fiber reinforced composites(CCFRCs),with their exceptional proper-ties such as high strength,high modulus,and lightweight,have extensive application potential in the aerospace and aviation sectors.However,the weak interfacial bonding between fibers and resin,especially the inadequate inter-laminar performance,has become a critical factor limiting their further development.The effects of heat treatment on the interface properties and microstructure of 3D-printed CCFRCs were investigated.Through double cantilever beam(DCB)tests,the influences of process parameters such as ply angle,heat treatment temperature and heat treatment time on the interlaminar fracture toughness of CCFRCs were systematically investigated.Combined with scanning electron microscopy(SEM)analysis of fracture surface morphology,the mechanisms by which heat treat-ment affects the interlaminar performance of composites were revealed.The results show that the interlaminar fracture toughness of[0/45]3 and[0/90]3 specimens is higher than that of[0/0]3 specimens.After heat treatment,the fi-ber bundles of[0/90]3 specimens exhibit more matrix adhesion and rougher surfaces,leading to significantly im-proved interfacial bonding property.Among them,the interlaminar fracture toughness of[0/0]3 specimens treated at 60℃for 2 h reaches 1.570 kJ/m2,representing a 50.67％increase compared to untreated specimens.In addi-tion,longer heat treatment time results in more pronounced improvements in fracture toughness.Heat treatment en-hances the interfacial bonding performance of CCFRCs and modifies their interlaminar failure mode by increasing resin fluidity,filling voids between deposition lines,and optimizing fiber alignment.关键词
碳纤维复合材料/3D打印/层间断裂韧性/界面性能Key words
carbon fiber composite/3D printing/interlaminar fracture toughness/interface property分类
通用工业技术引用本文复制引用
孙士勇,马鑫,汤文杰,杨睿,韦磊..热处理工艺对3D打印连续纤维增强复合材料层间性能的影响[J].复合材料科学与工程,2026,(2):104-110,129,8.基金项目
国家重点研发计划(2020YFB1506704) （2020YFB1506704）
