Simultaneous enhancement of impedance matching and the absorption behavior of BN/RGO nanocomposites for efficiency microwave absorption
| Autor: | Xin Chen, Jingwei Zhang, Lei Zhang, Huimin Liu, Zhiyang Jiang, Haoxu Si, Yahong Zhang, Chunhong Gong |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Polymers and Plastics 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention chemistry.chemical_compound law Nano Materials Chemistry Absorption (electromagnetic radiation) Dielectric absorption Nanocomposite business.industry Graphene Reflection loss 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Mechanics of Materials Boron nitride Ceramics and Composites Optoelectronics 0210 nano-technology business Microwave |
| Zdroj: | Composites Communications. 22:100503 |
| ISSN: | 2452-2139 |
| DOI: | 10.1016/j.coco.2020.100503 |
| Popis: | In this work, to meet the comprehensive demands for efficiency and lightweight electromagnetic wave absorption (EWA) material, boron nitride/reduced graphene oxide (BN/RGO) nanocomposites were prepared via a one-step thermal nitridation process. The insulative BN component in the obtained nano BN/RGO hybrids realized the regulation of conductivity and thus impedance matching, and the large interface area of the hybrids facilitated the high-frequency polarization effect and contributed to the enhanced EWA performance. Remarkably, the EWA performance of optimized BN/RGO hybrids reached a strong reflection loss (RL) of −48.9 dB in a broad effective absorption bandwidth of 4.2 GHz with a low filler content of 3.0 wt. % and at a thin thickness of 2.6 mm, which well outperforms that of most other reported dielectric absorption materials. Our results may light a new way on introducing light element component to produce high-efficiency RGO-based EWA materials with facile and low-cost production process. |
| Databáze: | OpenAIRE |
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