复合材料科学与工程Issue(8)：15-23,9.DOI:10.19936/j.cnki.2096-8000.20250828.003
不同面密度PVDF电纺纳米纤维膜对CF/EP复合材料层压板层间断裂韧性的影响研究
Study on the influence of PVDF electrospun nanofiber membranes with different areal densities on the interlaminar fracture toughness of CF/EP composite laminates
摘要
Abstract
This study examines the reinforcing impact of polyvinylidene fluoride(PVDF)nanofibrous mem-branes when used as an additive material on the interlaminar fracture toughness of carbon fiber/epoxy(CF/EP)composite laminates with different areal densities.Here,PVDF electrospun nanofibrous membranes with three differ-ent areal densities(9 g/m2,15 g/m2,28 g/m2)were prepared and inserted into the interlaminar layers of the lam-inates for experimental analysis.The results show that the PVDF nanofibrous membrane with a 15 g/m2 areal density provided the most significant enhancement of the interlaminar fracture toughness of the laminate,with 67%and 13%enhancement of the modeⅠand modeⅡfracture toughness,respectively,with respect to that of the laminate with-out the introduction of the PVDF nanofibrous membrane.SEM analysis reveals that the toughening mechanism of PVDF nanofibrous membranes mainly included the processes of fibre bridging,pull-out and fracture.Furthermore,based on the numerical simulation of modeⅠand modeⅡinterlaminar fracture behaviours using the finite element simulation method with cohesion model,it is found that the incorporation of PVDF nanofibrous membranes did not significantly change the interface strength of the interlaminar region,but effectively prevented the propagation of the interlaminar cracks through the action of the fibrous skeleton.The numerical simulation results were in good agree-ment with the experimental results,which verifies the feasibility of cohesion model in simulating the interlaminar cracks in PVDF nanofibrous membranes.关键词
复合材料/层间断裂韧性/静电纺丝/内聚力单元Key words
composite materials/interlaminar fracture toughness/electrospinning/cohesive zone model分类
通用工业技术引用本文复制引用
彭焱,韦廖贤,曾塘玉,马传国..不同面密度PVDF电纺纳米纤维膜对CF/EP复合材料层压板层间断裂韧性的影响研究[J].复合材料科学与工程,2025,(8):15-23,9.基金项目
国家自然科学基金(12262007) （12262007）
广西电子信息材料构效关系重点实验室开放研究基金(201018-K) （201018-K）
