Constructing flexible fiber bridging claws of micro/nano short aramid fiber at interlayer of basalt fiber reinforced polymer for improving compressive strength with and without impact  

作　　者：Jiaxin HE Yanan LYU Guangming YANG Fei CHENG Yongjun DENG Shihao ZUO Sidra ASHFAQ Yunsen HU Xiaozhi HU 

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]School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang 621010,China [3]Sichuan Sizhong Basalt Fiber Technology Research Co.,Ltd.,Dazhou 635756,China [4]Basalt Fiber and Composite Key Laboratory of Sichuan Province,Dazhou 635756,China [5]Institute of Automation,Chinese Academy of Sciences,Beijing 100190,China [6]School of Mechanical Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China [7]School of Mechanical Engineering,University of Western Australia,Perth 6009,Australia

出　　处：《Chinese Journal of Aeronautics》2024年第12期484-497,共14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 Basalt Fiber and Composite Key Laboratory of Sichuan Province,China(No.XXKFJJ202308);Shock and Vibration of Engineering Materials and Structures Key Lab of Sichuan Province,China(No.23kfgk06).

摘　　要：The high-performance Basalt Fiber Reinforced Polymer(BFRP)composites have been prepared by guiding Micro/Nano Short Aramid Fiber(MNSAF)into the interlayer to improve the resin-rich region and the interfacial transition region,and the flexible fiber bridging claws of MNSAF were constructed to grasp the adjacent layers for stronger interlaminar bond.The lowvelocity impact results show that the MNSAF could improve the impact resistance of BFRP composites.The compression test results demonstrate that the compressive strength and the residual compressive strength after impact of MNSAF-reinforced BFRP composites were greater than those of unreinforced one,exhibiting the greatest 56.2% and 73.3% increments respectively for BFRP composites improved by 4wt%MNSAF.X-ray micro-computed tomography scanning results indicate that the“fiber bridging claws”contributed to better mechanical interlocking to inhibit the crack generation and propagation under impact and compression load,and the original delamination-dominated failure of unreinforced BFRP composites was altered into sheardominated failure of MNSAF-reinforced BFRP composites.Overall,the MNSAF interleaving might be an effective method in manufacturing high-performance laminated fiber in industrial production.

关 键 词：Basalt fiber reinforced polymer Micro/nano short aramid fiber Flexible fiber bridging claws Compressive strength after impact Mechanical interlocking 

分 类 号：TQ327[化学工程—合成树脂塑料工业] TB33[一般工业技术—材料科学与工程]