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 

作者机构：Zhongyuan University of TechnologyZhengzhou 450000China State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsDonghua UniversityShanghai 201620China Shanghai University of Engineering ScienceShanghai 201620China Henan University of EngineeringZhengzhou 450000China 

出 版 物：《Advanced Fiber Materials》 (先进纤维材料（英文）)

年 卷 期：2022年第4卷第5期

页      面：1081-1093页

核心收录：

学科分类：0821[工学-纺织科学与工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

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) 

主　　题：Carbon fiber/epoxy resin Polyethersulfone Polyaryletherketone cardo Interlaminar fracture toughness Nanofiber 

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 *** cast was then manufactured into hybrid nanofiber as interleaves for interlaminar toughening of carbon fiber/epoxy resin(CF/EP)composites using a co-solvent *** 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 *** used PES/PEK-C hybrid nanofibers with an areal density of 19.2 g per square meter(gsm)as composite toughening *** 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 *** 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.