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Shao Q, Wang H, Zhang L, Wang X, Zhang H, Bai R, Fu H. Fabrication of highly conductive, flexible, and hydrophobic Kevlar®@Ni-P-B@Cu@CS fabric with excellent self-cleaning performance for electromagnetic interference shielding. Dalton Trans 2024; 53:4432-4443. [PMID: 38349221 DOI: 10.1039/d3dt04291j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
In this work, a simple and cost-effective method was proposed and developed to prepare a novel multilayer-structured Kevlar®@nickel-phosphorus-boron@copper@copper stearate (Kevlar®@Ni-P-B@Cu@CS) composite fabric with high conductivity, high flexibility, high hydrophobicity, and high durability to effectively shield electromagnetic interference (EMI). In this method, an amorphous Ni-P-B alloy nanolayer was initially deposited onto a Kevlar® fabric via electroless plating. Afterward, a crystalline Cu nanolayer was deposited as the second layer via electroplating. Finally, a monolayer of copper stearate was innovatively self-assembled as the outermost protective layer. The Cu deposition was effectively adjusted and designed by controlling the plating current and plating time. The electrical resistance and contact angle of the optimized Kevlar®@Ni-P-B@Cu@CS composite fabric were as low as 3.2 mΩ sq-1 and as high as 115.39°, respectively, indicating that the fabric could withstand bending, tape-off, corrosion, and accelerated environmental tests. The average EMI-shielding efficiency of the durable composite fabric was 93.9 dB in the frequency range of 8.2-12.4 GHz, which was mainly attributed to the absorption loss. Thus, the proposed material configuration has promise for applications in aviation, aerospace, telecommunication, wearable devices, and military industries.
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Affiliation(s)
- Qinsi Shao
- Institute for Sustainable Energy, School of Sciences, Shanghai University, Shanghai, 200444, P.R. China.
| | - Hao Wang
- Institute for Sustainable Energy, School of Sciences, Shanghai University, Shanghai, 200444, P.R. China.
| | - Leilei Zhang
- Institute for Sustainable Energy, School of Sciences, Shanghai University, Shanghai, 200444, P.R. China.
| | - Xihai Wang
- Institute for Sustainable Energy, School of Sciences, Shanghai University, Shanghai, 200444, P.R. China.
| | - Hengxin Zhang
- Research Center for Composite Materials, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, P. R. China.
| | - Ruicheng Bai
- Research Center for Composite Materials, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, P. R. China.
| | - Hongshan Fu
- Shanghai Institute of Space Power-Sources, Shanghai, 200245, P. R. China.
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Dai Y, Xu Y, Jiang D, Bai L, Li Z, Huo P, Liu C, Liu Y. Electromagnetic interference shielding of flexible carboxymethyl cellulose/MWCNT@Fe 3O 4 composite film with ultralow reflection loss. Int J Biol Macromol 2024; 257:128604. [PMID: 38056729 DOI: 10.1016/j.ijbiomac.2023.128604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 11/25/2023] [Accepted: 12/02/2023] [Indexed: 12/08/2023]
Abstract
Nowadays, various high-performance electromagnetic interference (EMI) shielding materials have enormous application potential in electronic field. However, traditional EMI shielding materials often have high conductivity, resulting in the serious mismatch between the impedance of the material surface and the free space, which will cause a large amount of reflection of electromagnetic (EM) waves, leading to secondary reflection pollution. In this paper, we report a novel flexible EMI shielding composite film with extremely low reflection loss and efficient EM wave absorption, which was prepared by assisted self-assembly based on simple vacuum filtration using carboxymethyl cellulose as the matrix and MWCNT@Fe3O4 synthesized by chemical coprecipitation as the composite functional filler. By adjusting the Fe3O4 coating degree of MWCNTs in the filler, the composite film achieved the construction of a conductive network with high Fe3O4 content. Benefit by the good adaptability of conductivity and magnetic permeability, the composite film has good impedance matching ability and microwave absorption performance. The reflection loss of the composite film with the thickness of 28 μm in the X-band was only 0.23 dB, accounting for 1.7 % of the total loss. This work provides new insights for the development of EMI materials and effective mitigation secondary EM wave reflection pollution.
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Affiliation(s)
- Yaohui Dai
- College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, PR China; Key Laboratory of Bio-based Materials Science & Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Ying Xu
- College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, PR China
| | - Dexing Jiang
- College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, PR China; Key Laboratory of Bio-based Materials Science & Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Long Bai
- College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, PR China; Key Laboratory of Bio-based Materials Science & Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Zhiguo Li
- College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, PR China; Key Laboratory of Bio-based Materials Science & Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Pengfei Huo
- College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, PR China; Key Laboratory of Bio-based Materials Science & Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Changwei Liu
- Institute of Petro chemistry, Heilongjiang Academy of Science, Harbin 150040, PR China.
| | - Yang Liu
- College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, PR China; Key Laboratory of Bio-based Materials Science & Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China.
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Ma H, Fashandi M, Rejeb ZB, Ming X, Liu Y, Gong P, Li G, Park CB. Efficient Electromagnetic Wave Absorption and Thermal Infrared Stealth in PVTMS@MWCNT Nano-Aerogel via Abundant Nano-Sized Cavities and Attenuation Interfaces. NANO-MICRO LETTERS 2023; 16:20. [PMID: 37975901 PMCID: PMC10656378 DOI: 10.1007/s40820-023-01218-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 09/28/2023] [Indexed: 11/19/2023]
Abstract
Pre-polymerized vinyl trimethoxy silane (PVTMS)@MWCNT nano-aerogel system was constructed via radical polymerization, sol-gel transition and supercritical CO2 drying. The fabricated organic-inorganic hybrid PVTMS@MWCNT aerogel structure shows nano-pore size (30-40 nm), high specific surface area (559 m2 g-1), high void fraction (91.7%) and enhanced mechanical property: (1) the nano-pore size is beneficial for efficiently blocking thermal conduction and thermal convection via Knudsen effect (beneficial for infrared (IR) stealth); (2) the heterogeneous interface was beneficial for IR reflection (beneficial for IR stealth) and MWCNT polarization loss (beneficial for electromagnetic wave (EMW) attenuation); (3) the high void fraction was beneficial for enhancing thermal insulation (beneficial for IR stealth) and EMW impedance match (beneficial for EMW attenuation). Guided by the above theoretical design strategy, PVTMS@MWCNT nano-aerogel shows superior EMW absorption property (cover all Ku-band) and thermal IR stealth property (ΔT reached 60.7 °C). Followed by a facial combination of the above nano-aerogel with graphene film of high electrical conductivity, an extremely high electromagnetic interference shielding material (66.5 dB, 2.06 mm thickness) with superior absorption performance of an average absorption-to-reflection (A/R) coefficient ratio of 25.4 and a low reflection bandwidth of 4.1 GHz (A/R ratio more than 10) was experimentally obtained in this work.
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Affiliation(s)
- Haoyu Ma
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, 24 Yihuan Road, Nanyiduan, Chengdu, 610065, Sichuan, People's Republic of China
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, ON, M5S 3G8, Canada
- Jiangsu JITRI Advanced Polymer Materials Research Institute, Tengfei Building, 88 Jiangmiao Road, Jiangbei New District, Nanjing, 211800, Jiangsu, People's Republic of China
| | - Maryam Fashandi
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, ON, M5S 3G8, Canada
| | - Zeineb Ben Rejeb
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, ON, M5S 3G8, Canada
| | - Xin Ming
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, International Research Center for X Polymers, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People's Republic of China
| | - Yingjun Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, International Research Center for X Polymers, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People's Republic of China
| | - Pengjian Gong
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, 24 Yihuan Road, Nanyiduan, Chengdu, 610065, Sichuan, People's Republic of China.
| | - Guangxian Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, 24 Yihuan Road, Nanyiduan, Chengdu, 610065, Sichuan, People's Republic of China
| | - Chul B Park
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, 24 Yihuan Road, Nanyiduan, Chengdu, 610065, Sichuan, People's Republic of China.
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, ON, M5S 3G8, Canada.
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Carvalho R, Brito-Pereira R, Pereira N, Lima AC, Ribeiro C, Correia V, Lanceros-Mendez S, Martins P. Improving the Performance of Paper-Based Dipole Antennas by Electromagnetic Flux Concentration. ACS APPLIED MATERIALS & INTERFACES 2023; 15:11234-11243. [PMID: 36802478 PMCID: PMC9982821 DOI: 10.1021/acsami.2c19889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 01/24/2023] [Indexed: 06/18/2023]
Abstract
One of the essential issues in modern advanced materials science is to design and manufacture flexible devices, in particular in the framework of the Internet of Things (IoT), to improve integration into applications. An antenna is an essential component of wireless communication modules and, in addition to flexibility, compact dimensions, printability, low cost, and environmentally friendlier production strategies, also represent relevant functional challenges. Concerning the antenna's performance, the optimization of the reflection coefficient and maximum range remain the key goals. In this context, this work reports on screen-printed paper@Ag-based antennas and optimizes their functional properties, with improvements in the reflection coefficient (S11) from -8 to -56 dB and maximum transmission range from 208 to 256 m, with the introduction of a PVA-Fe3O4@Ag magnetoactive layer into the antenna's structure. The incorporated magnetic nanostructures allow the optimization of the functional features of antennas with possible applications ranging from broadband arrays to portable wireless devices. In parallel, the use of printing technologies and sustainable materials represents a step toward more sustainable electronics.
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Affiliation(s)
- R. Carvalho
- Physics
Centre of Minho and Porto Universities (CF-UM-UP), Universidade do Minho, 4710-057 Braga, Portugal
- LaPMET—Laboratory
of Physics for Materials and Emergent Technologies, Universidade do Minho, 4710-057 Braga, Portugal
| | - R. Brito-Pereira
- Physics
Centre of Minho and Porto Universities (CF-UM-UP), Universidade do Minho, 4710-057 Braga, Portugal
- LaPMET—Laboratory
of Physics for Materials and Emergent Technologies, Universidade do Minho, 4710-057 Braga, Portugal
- Centre
for MicroElectroMechanics Systems (CMEMS), University of Minho, 4710-057 Braga, Portugal
| | - N. Pereira
- Physics
Centre of Minho and Porto Universities (CF-UM-UP), Universidade do Minho, 4710-057 Braga, Portugal
- LaPMET—Laboratory
of Physics for Materials and Emergent Technologies, Universidade do Minho, 4710-057 Braga, Portugal
| | - A. C. Lima
- Physics
Centre of Minho and Porto Universities (CF-UM-UP), Universidade do Minho, 4710-057 Braga, Portugal
- LaPMET—Laboratory
of Physics for Materials and Emergent Technologies, Universidade do Minho, 4710-057 Braga, Portugal
| | - C. Ribeiro
- Physics
Centre of Minho and Porto Universities (CF-UM-UP), Universidade do Minho, 4710-057 Braga, Portugal
- LaPMET—Laboratory
of Physics for Materials and Emergent Technologies, Universidade do Minho, 4710-057 Braga, Portugal
| | - V. Correia
- Centre
for MicroElectroMechanics Systems (CMEMS), University of Minho, 4710-057 Braga, Portugal
| | - S. Lanceros-Mendez
- Physics
Centre of Minho and Porto Universities (CF-UM-UP), Universidade do Minho, 4710-057 Braga, Portugal
- LaPMET—Laboratory
of Physics for Materials and Emergent Technologies, Universidade do Minho, 4710-057 Braga, Portugal
- BCMaterials,
Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
- IKERBASQUE,
Basque Foundation for Science, 48009 Bilbao, Spain
| | - P. Martins
- Physics
Centre of Minho and Porto Universities (CF-UM-UP), Universidade do Minho, 4710-057 Braga, Portugal
- LaPMET—Laboratory
of Physics for Materials and Emergent Technologies, Universidade do Minho, 4710-057 Braga, Portugal
- IB-S
Institute
of Science and Innovation for Sustainability, University of Minho, 4710-057 Braga, Portugal
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