A low-cost and high-strength basalt/carbon fiber reinforced polymer improved by imitating tree-root micro/nano aramid short fiber  

作　　者：Guangming YANG Yanan LYU Fei CHENG Jiaxin HE Shihao ZUO Wenyi HUANG Yunsen HU Xiaozhi HU Xi CHEN 

机构地区：[1]Shock and Vibration of Engineering Materials and Structures Key Lab of Sichuan Province,Southwest University of Science and Technology,Mianyang 621010,China [2]Engineering Research Center of Biomass Materials,Ministry of Education,Southwest University of Science and Technology,Mianyang 621010,China [3]School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang 621010,China [4]Institute of Automation,Chinese Academy of Sciences,Beijing 100190,China [5]School of Artificial Intelligence,University of Chinese Academy of Sciences,Beijing 100101,China [6]School of Mechanical Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China [7]Department of Mechanical Engineering,University of Western Australia,Perth 6009,Australia

出　　处：《Chinese Journal of Aeronautics》2024年第10期526-538,共13页中国航空学报（英文版）

基　　金：Supported financially by the National Natural Science Foundation of China(No.52102115);the High-end Foreign Expert Recruitment Plan of China(No.G2023036002L);the Natural Science Foundation of Sichuan Province,China(No.2023NSFSC0961);Shock and Vibration of Engineering Materials and Structures Key Lab of Sichuan Province,China(No.23kfgk06);the Postgraduate Innovation Fund Project by Southwest University of Science and Technology,China(No.24ycx2027).

摘　　要：The high-strength Basalt Carbon Fiber Reinforced Polymer(BCFRP)composites had been manufactured by guiding Imitating Tree-root Micro/Nano Aramid Short Fiber(ITMNASF)into the interlayer of Basalt Fiber(BF)and Carbon Fiber(CF)plies to form thin interleaving,and various mass proportions of IT-MNASF were designed to discuss the reinforcing effect on the BCFRP heterogeneous composites.The results of three points bending tests showed that flexural strength and energy absorption of 4wt%IT-MNASF reinforced BCFRP heterogeneous composites had been improved by 32.4%and 134.4%respectively compared with that of unreinforced specimens.The 4wt%IT-MNASF reinforced BCFRP specimens showed both a greater strength and a lower cost(reduced by 31%around)than that of plain CFRP composites.X-ray micro-computed tomography scanning results exhibited that the delamination-dominated failure of plain BCFRP composites was changed into multi-layer BF and CF fabrics damage.The reinforcing mechanism revealed that the introduced IT-MNASF could construct quasi-vertical fiber bridging,and it was used as"mechanical claws"to grasp adjacent fiber layers for creating a stronger mechanical interlocking,and this effectively improved resin-rich region and interfacial transition region at the interlayers.The simple and effective IT-MNASF interleaving technique was very successful in low-cost and high-strength development of BCFRP heterogeneous composites.

关 键 词：Basalt carbon fiber reinforced polymer Micro/nano aramid fiber Fiber bridging Strength improvement Low-cost substitution 

分 类 号：TQ327[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]