Enhancing impact resistance of CFRP by incorporating dynamic non-covalent bonds into epoxy resin networks
文献类型：期刊论文
| 作者 | Yang HW(杨昊玮)2,3; Miao ZW(苗振威)3; Yang YX(杨豫新)2,3; Yan WJ(闫维佳)2,3; Ren L(任磊)3; Yang, Zhe1; Guo YC(郭雅悰)3; Yang, Yilin3; Wei YP(魏延鹏)3; Tu H(涂欢)3 |
| 刊名 | COMPOSITES PART B-ENGINEERING
 |
| 出版日期 | 2025-11-15 |
| 卷号 | 307页码:17 |
| 关键词 | Dynamic covalent bond Carbon fiber reinforced polymer Impact damage resistance Epoxy resin |
| ISSN号 | 1359-8368 |
| DOI | 10.1016/j.compositesb.2025.112875 |
| 通讯作者 | Wei, Yanpeng(weiyanpeng@imech.ac.cn) ; Tu, Huan(tuhuan@imech.ac.cn) |
| 英文摘要 | Carbon fiber reinforced epoxy composites have gained widespread application in aerospace and automotive industries due to their exceptional mechanical properties and chemical stability. However, the inherent brittleness of epoxy matrices and the relatively weak interfacial adhesion to carbon fibers significantly constrain the further utilization in extreme conditions. To overcome these obstacles, this study introduced an innovative approach to modify epoxy-based resin by employing polyethylene glycol 200/nano-silica suspensions as dispersion media to incorporate boric acid into the epoxy molecular system. This methodology successfully constructed boron-contained side-chain structures during epoxy curing, where dynamic boron-oxygen (B-O) and boron-nitrogen (B-N) crosslinked networks were established in the epoxy molecular chains and at the resin-fiber interface simultaneously. The dynamic crosslinked network-induced performance enhancement is attributed to three synergistic mechanisms: (1) dynamic bonds participate in the epoxy curing process moderately and thus reduce crosslinking density, which contributed to the improvement of material toughness; (2) the reversible breakage-reformation behavior of dynamic B-O/B-N bonds effectively dissipates impact energy; (3) dynamic covalent bonds at resin-fiber interfaces significantly strengthen adhesive performance and optimize stress transfer efficiency. Experimental results demonstrated that the impact fracture strength of modified epoxy resin was promoted by over 30 %. Furthermore, the novel composite system exhibited outstanding impact damage resistance, where the post-impact residual compressive strength and the fracture strength were improved by 37.2 % and 60.7 %, respectively. This study proposes new design principles to develop high-performance fiberreinforced composites with substantial engineering application potential in aerospace and transportation fields. |
| 分类号 | 一类 |
| WOS关键词 | MECHANICAL-PROPERTIES ; FRACTURE-TOUGHNESS ; FAILURE-MECHANISM ; CARBON-FIBERS ; ADHESION ; DAMAGE |
| 资助项目 | National Natural Science Foundation of China[12302496] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB0620302] |
| WOS研究方向 | Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001555366700005 |
| 资助机构 | National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences |
| 其他责任者 | 魏延鹏 ; 涂欢 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/103810]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.Beijing CAS Mech Confidence Sci & Technol Co Ltd, Beijing 100088, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Yang HW,Miao ZW,Yang YX,et al. Enhancing impact resistance of CFRP by incorporating dynamic non-covalent bonds into epoxy resin networks[J]. COMPOSITES PART B-ENGINEERING,2025,307:17. |
| APA | 杨昊玮.,苗振威.,杨豫新.,闫维佳.,任磊.,...&涂欢.(2025).Enhancing impact resistance of CFRP by incorporating dynamic non-covalent bonds into epoxy resin networks.COMPOSITES PART B-ENGINEERING,307,17. |
| MLA | 杨昊玮,et al."Enhancing impact resistance of CFRP by incorporating dynamic non-covalent bonds into epoxy resin networks".COMPOSITES PART B-ENGINEERING 307(2025):17. |
入库方式： OAI收割
来源：力学研究所
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