Cheng Haoran, Pan Yamin, Wang Xin, Liu Chuntai, Shen Changyu, Schubert Dirk W, Guo Zhanhu, Liu Xianhu
Key Laboratory of Advanced Material Processing & Mold (Ministry of Education), National Engineering Research Center for Advanced Polymer Processing Technology, College of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450002, People's Republic of China.
Institute of Polymer Materials, Friedrich-Alexander-University Erlangen-Nuremberg, Martensstr. 7, 91058, Erlangen, Germany.
Nanomicro Lett. 2022 Feb 21;14(1):63. doi: 10.1007/s40820-022-00812-w.
The development of multifunctional and efficient electromagnetic wave absorbing materials is a challenging research hotspot. Here, the magnetized Ni flower/MXene hybrids are successfully assembled on the surface of melamine foam (MF) through electrostatic self-assembly and dip-coating adsorption process, realizing the integration of microwave absorption, infrared stealth, and flame retardant. Remarkably, the Ni/MXene-MF achieves a minimum reflection loss (RL) of - 62.7 dB with a corresponding effective absorption bandwidth (EAB) of 6.24 GHz at 2 mm and an EAB of 6.88 GHz at 1.8 mm. Strong electromagnetic wave absorption is attributed to the three-dimensional magnetic/conductive networks, which provided excellent impedance matching, dielectric loss, magnetic loss, interface polarization, and multiple attenuations. In addition, the Ni/MXene-MF endows low density, excellent heat insulation, infrared stealth, and flame-retardant functions. This work provided a new development strategy for the design of multifunctional and efficient electromagnetic wave absorbing materials.
开发多功能高效电磁波吸收材料是一个具有挑战性的研究热点。在此，通过静电自组装和浸涂吸附工艺，成功地将磁化镍花/MXene杂化物组装在三聚氰胺泡沫（MF）表面，实现了微波吸收、红外隐身和阻燃功能的一体化。值得注意的是，Ni/MXene-MF在2 mm处实现了-62.7 dB的最小反射损耗（RL），相应的有效吸收带宽（EAB）为6.24 GHz，在1.8 mm处的EAB为6.88 GHz。强电磁波吸收归因于三维磁/导电网络，其提供了优异的阻抗匹配、介电损耗、磁损耗、界面极化和多重衰减。此外，Ni/MXene-MF具有低密度、优异的隔热、红外隐身和阻燃功能。这项工作为多功能高效电磁波吸收材料的设计提供了一种新的发展策略。
