| POLYMERS AND POLYMER MATRIX COMPOSITES |
|
|
|
|
|
| Preparation and Electromagnetic Wave Absorbing Mechanism of Helical Amorphous Carbon Nanotube/Bismaleimide (HACNT/BMI) Resin Composites |
| ZHU Ruoxing1,2, ZHAO Tingkai2, SHE Shengfei3, LI Tiehu2
|
1 Library of Northwestern Polytechnical University, Xi'an 710072, China
2 School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China
3 State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an 710119, China |
|
|
|
|
Abstract New electromagnetic wave absorbing materials are the hotspot and focus of research in national defense science and technology. Carbonmaterials, as light absorbing materials, have been widely valued by researchers. In this study, we prepared helical amorphous carbon nanotube/bismaleimide (HACNT/BMI) resin composites and investigated their electromagnetic wave absorbing properties. We used helical amorphous carbon nanotubes as adsorbing agents, bismaleimide as matrix to prepare HACNT/BMI resin composites. Helical amorphous carbon nanotubes were prepared by floating catalytic chemical vapor deposition method. Scanning electron microscope (SEM), transmission electron microscope(TEM), X-ray diffractometer (XRD) and Raman spectroscopy were used to characterize the morphology and structure of samples. The electromagnetic parameters of HACNT/BMI composites were measured by vector network analyzer. The results showed that the increasing in the content of absorbing agent enhanced the electromagnetic wave absorbing properties of HACNT/BMI composites. The maximum absorption peak reached -18.35 dB, the widest absorbing bandwidth reached 2.56 GHz(9.52~12.08 GHz) when the RL belows -10 dB, and the reflection loss exceeded 97%. Moreover, the absorption peak of HACNT/BMI composites with higher content of HACNTs shifted towards lower frequency compared to that of the sample with lower content of HACNTs. Our results indicate that the helical structures of HACNTs plays an important role in enhancing the electromagnetic wave absorbing performance of HACNT/BMI composites. The HACNTs could increase the possibility of multiple reflection of electromagnetic wave and the path length of scattered waves. As a result, the energy loss of incident electromagnetic wave was increased.
|
|
Published: 04 June 2021
|
|
|
About author:: Ruoxing Zhu received her master degree in materials science and engineering from Northwestern Polytechnical University (NWPU) in Apr. 2016 and conducted research under the guidance of Professor Zhao Tingkai. She works at Northwestern Polytechnical University Library as a material librarian now. Her main research area focus on the preparation of carbon materials such as carbon nanotubes and graphene, and the application of composite materials in electromagnetic shielding and wave absorption of magnetic particles doped carbon-based materials.
Tingkai Zhao served in Northwestern Polytechnical University as a professor and graduate supervisor. He is the is the director of the International Joint Research Center for NPU-NCP New Nanomaterial Defect Engineering, and the deputy director of the Shaanxi Graphene New Carbon Materials and Application Enginee-ring Laboratory. He worked in Xi'an Jiaotong University's postdoctoral workstation from 2005 to 2007. Since joining the School of Materials, Northwestern Polytechnical University in 2007, he has once studied in the Department of Materials, Northwestern University, and the Department of Materials, Oxford University. He has published more than 130 journal papers, applied 10 national invention patents and 5 of them were authorized and responsible for completing 20 scientific research projects. His team's research interests are basic research on the application of nanomaterials and new energy materials, especially graphene, carbon nanotubes, graphite-carbon and its composite materials, preparation technology, structure and performance research, and applied research in the fields of lithium-ion batteries, solar cells, biological devices, electrochemical sensors, electromagnetic absorption and shielding. |
|
|
1 Zhao X N, Nie X Y, Li Y, et al.Journal of Materials Chemistry C, 2019, 7(39), 12270.
2 Qin F, Brosseau C. Journal of Applied Physics, 2012, 111(6), 61301.
3 Luo C, Jiao T, Gu J, et al. ACS Applied Materials & Interfaces, 2018,10(45), 39307.
4 Dai L N, Xie S K, Yu M J, et al. Journal of Magnetism and Magnetic Materials, 2018, 466, 22.
5 Wang C Z, Li J, Guo S Y. RSC Advances, 2019, 9(41), 23843.
6 Tang J, Bi S, Wang X, et al. Journal of Materials Science, 2019, 54(22), 13990.
7 Meng R, Zhang T, Jiao P Z, et al. Journal of Alloys and Compounds, 2019, 798, 386.
8 Song Z M, Liu X F, Sun X, et al. Carbon, 2019, 151, 36.
9 Meng F B, Wang H G, Huang F, et al. Composites Part B: Engineering, 2018, 137,260.
10 Gupta T K, Singh B P, Mathur R B, et al. Nanoscale, 2014, 6(2), 842.
11 Xiao Z, Feng Y, Shen Z, et al. ACS Applied Materials & Interfaces, 2018, 10(29), 24920.
12 Wang B M, Guo Z Q, Han Y, et al. Construction & Building Materials, 2013, 46(46), 98.
13 Li B, Ji Z J, Xie S, et al. Journal of Materials Science Materials in Electronics, 2019, 30(7), 1.
14 Park K Y, Han J H, Kim J B, et al. Journal of Composite Materials, 2011, 45(26), 2773.
15 Li Y H, Deng L W, Luo H, et al. Acta Physica Sinica, 2019, 68(9), 189 (in Chinese).
李宇涵,邓联文,罗衡, 等.物理学报, 2019, 68(9), 189.
16 Zhao T K, Ji X L, Jin W B, et al. Journal of Alloys and Compounds, 2017, 703, 424.
17 Zhao T K, Ji X L, Jin W B, et al. Rsc Advances, 2017, 7(26), 15903.
18 Hu J T, Zhao T K, Peng X R, et al. Composites Part B: Engineering, 2018, 134, 91.
19 Hou C L, Li T H, Zhao T K, et al. Materials & Design, 2012, 33, 413.
20 Hou C, Song S, Wei J, et al. Journal of Superconductivity and Novel Magnetism, 2015, 28(7), 2077.
21 Yin P, Zhang L, Sun P, et al. Ceramics International, 2020, 46(9), 13641. |
|
|
|
渝公网安备50019002502923号 © Editorial Office of Materials Reports.
2021, Vol. 35 
