| XIAO Dongmei,CHENG Zhenyu,LIU Yijie,DUAN Lvtong,ZHOU Jintang.Marine Corrosion-resistant Bilayer Rare Earth-doped Ferrite/Polyurethane Wave-absorbing Composites[J],53(22):161-170 |
| Marine Corrosion-resistant Bilayer Rare Earth-doped Ferrite/Polyurethane Wave-absorbing Composites |
| Received:November 17, 2023 Revised:June 05, 2024 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2024.22.014 |
| KeyWord:microwave absorption corrosion resistance multilayer structure rare earth-doped ferrite composite |
| Author | Institution |
| XIAO Dongmei |
College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing , China |
| CHENG Zhenyu |
College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing , China |
| LIU Yijie |
College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing , China |
| DUAN Lvtong |
College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing , China |
| ZHOU Jintang |
College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing , China |
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| Abstract: |
| Microwave absorbers are susceptible to strong corrosion in the marine environment, leading to significant limitations in their application. Therefore, the development of composites with stronger corrosion resistance and wave-absorbing properties is imminent. The work aims to prepare new double-layer wave-absorbing composites by Ce-ferrite/TPU composites with a 30% mass fraction of rare-earth ferrite powder as the matching layer and Ce-ferrite/TPU composites with a 70% mass fraction of rare-earth ferrite powder as the wave-absorbing layer. Among them, the preparation process of the single-layer composites is to keep the total mass of the rare-earth-doped ferrite powder and polyurethane unchanged at 12 g. The rare earth-doped ferrite powder with mass fractions of 30% and 70% was weighed, respectively, and a three-necked flask was erected. Firstly, the DMF solution was poured in and the stirring paddles were opened to raise the temperature to 80 ℃, and then the DMF solution was poured in the polyurethane (TPU), so that the DMF solution and the polyurethane (TPU), which had been previously heated to 80 ℃, were mixed in the stirring paddles. The DMF solution was fully dissolved under the stirring of the paddles for about two hours, after which the weighed rare earth-doped ferrite powder was poured in to fully react with TPU, and then the above reaction system was placed in a vacuum drying oven for the removal of bubbles and then put into the oven to dry the DMF solution, and a single-layer Ce-ferrite/TPU composite material could be obtained after the above operation. |
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