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 |
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| Affiliation: | 1.Shock and Vibration of Engineering Materials and Structures Key Lab of Sichuan Province,Southwest University of Science and Technology,Mianyang 621010,China;School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang 621010,China;Sichuan Sizhong Basalt Fiber Technology Research Co.,Ltd.,Dazhou 635756,China;Basalt Fiber and Composite Key Laboratory of Sichuan Province,Dazhou 635756,China;2.Institute of Automation,Chinese Academy of Sciences,Beijing 100190,China;3.Shock and Vibration of Engineering Materials and Structures Key Lab of Sichuan Province,Southwest University of Science and Technology,Mianyang 621010,China;4.Shock and Vibration of Engineering Materials and Structures Key Lab of Sichuan Province,Southwest University of Science and Technology,Mianyang 621010,China;School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang 621010,China;5.School of Mechanical Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China;6.School of Mechanical Engineering,University of Western Australia,Perth 6009,Australia |
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| Abstract: | 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 low-velocity impact results show that the MNSAF could improve the impact resistance of BFRP com-posites.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 shear-dominated failure of MNSAF-reinforced BFRP composites.Overall,the MNSAF interleaving might be an effective method in manufacturing high-performance laminated fiber in industrial pro-duction. |
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| Keywords: | Basalt fiber reinforced poly-mer Micro/nano short aramid fiber Flexible fiber bridging claws Compressive strength after impact Mechanical interlocking |
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