复合材料科学与工程Issue(11)：76-81,6.DOI:10.19936/j.cnki.2096-8000.20241128.010
超薄UHMWPE纤维插层对碳纤维层合板力学性能的影响
Effect of ultra-thin UHMWPE fiber insertion on the mechanical properties of carbon fiber laminates
摘要
Abstract
In order to improve the ductility of ultra-thin carbon fiber composites unidirectional laminates(UDLs),both CF/UHMWPE hybrid and ultra-thin carbon fiber UDLs with the same thickness were prepared.Their mechanical properties were tested,and the micro-morphology of the specimens was observed after tensile frac-ture in this paper.The results show that the average tensile strength of CF/UHMWPE hybrid UDL reaches 1 695 MPa,and the UDL presents a capacity withstanding 1 560 MPa load for 10 s after tensile damage occurred.Com-pared to ultra-thin carbon fiber laminates,although the average tensile strength of the hybrid UDLs is reduced by 11.6%,their average elongation is increased by 7.1%.The hybrid specimens do not develop brittle fracture damage during tensile testing,and the splitting phenomenon of the UDLs under macroscopic morphology is reduced.The decrease in tensile strength of the hybrid UDL is related to the lower volume fraction of carbon fibers,but the UHMWPE fi-bers,which were used as the inserted phase,increased the elongation of the hybrid UDL because of its good ductili-ty.Microstructurally,the inserted ultra-thin UHMWPE fiber layer inhibits the generation and expansion of the cracks in the UDL and suppresses the brittle fracture of the adjacent carbon fiber layers,which improves the overall duc-tility of the hybrid UDL.The experimental results provide the basis for designing highly ductile hybrid composites further.关键词
超薄UHMWPE纤维插层/碳纤维层合板/层间混杂/拉伸性能/断裂形貌/复合材料Key words
ultra-thin UHMWPE fiber intercalation/carbon fiber laminates/interlayer mixing/tensile proper-ties/fracture morphology/composites分类
通用工业技术引用本文复制引用
宗文波,张竹青,吴怡晓,张峻滔,梁霞,吴海宏..超薄UHMWPE纤维插层对碳纤维层合板力学性能的影响[J].复合材料科学与工程,2024,(11):76-81,6.基金项目
全军装备发展部(62602010237) （62602010237）
国家重点研发计划"新能源汽车"重点专项(2016YFB0101602) （2016YFB0101602）
