Synergetic Improvement of Interlaminar Fracture Toughness in Carbon Fiber/Epoxy Composites Interleaved with PES/PEK‑C Hybrid Nanofiber Veils  

作　　者：Jinli Zhou Chenyu Zhang Chao Cheng Ming Wang Zhihui Yang Yanfei Yang Hongying Yang Muhuo Yu 

机构地区：[1]Zhongyuan University of Technology,Zhengzhou 450000,China [2]State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University,Shanghai 201620,China [3]Shanghai University of Engineering Science,Shanghai 201620,China [4]Henan University of Engineering,Zhengzhou 450000,China

出　　处：《Advanced Fiber Materials》2022年第5期1081-1093,共13页先进纤维材料（英文）

基　　金：The project was funded by State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University(no.KF2121);Science and Technology Tackle Key Project of Henan Province(no.212102210036);Science and Technology Tackle Key Project of Henan Province(no.212102210550);the Science and Technology Guidance Project of China National Textile and Apparel Council(no.2020061).

摘　　要：In this study,two types of soluble thermoplastic resins were added to epoxy resin at a fixed weight ratio to prepare a three-phase cast body.The cast was then manufactured into hybrid nanofiber as interleaves for interlaminar toughening of carbon fiber/epoxy resin(CF/EP)composites using a co-solvent method.The results revealed that when the hybrid components reached 15 wt%,Polyethersulfone(PES)and polyaryletherketone cardo(PEK-C)exhibited the best synergistic toughening effect,and the fracture toughness increased by 99.8%and 39.8%,respectively,compared with the reference or the same proportion of the single PES toughened sample.We used PES/PEK-C hybrid nanofibers with an areal density of 19.2 g per square meter(gsm)as composite toughening layers.Apart from the lack of significant influence of PES nanofiber on CF/EP composites,the interlaminar fracture toughness of mode I and mode II layers increased by 88.3%and 46.9%,respectively,compared to the reference sample.Scanning Electron Microscopy of the fracture surface and cross-section micromorphology of the laminate displayed that the thermoplastic microspheres of different sizes contribute differently to crack resistance:PEK-C consumes more energy due to the debonding and extraction of microspheres and resin,whereas the presence of the PES phase can induce more plastic deformation and crack deflection.

关 键 词：Carbon fiber/epoxy resin POLYETHERSULFONE Polyaryletherketone cardo Interlaminar fracture toughness NANOFIBER 

分 类 号：TB383[一般工业技术—材料科学与工程]