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Elhassan A, Lv X, Abdalla I, Yu J, Li Z, Ding B. Efficient Synthesis of Fe 3O 4/PPy Double-Carbonized Core-Shell-like Composites for Broadband Electromagnetic Wave Absorption. Polymers (Basel) 2024; 16:1160. [PMID: 38675079 PMCID: PMC11053598 DOI: 10.3390/polym16081160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/15/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024] Open
Abstract
Ever-increasing electromagnetic pollution largely affects human health, sensitive electronic equipment, and even military security, but current strategies used for developing functional attenuation materials cannot be achieved in a facile and cost-effective way. Here, a unique core-shell-like composite was successfully synthesized by a simple chemical approach and a rapid microwave-assisted carbonization process. The obtained composites show exceptional electromagnetic wave absorption (EMWA) properties, including a wide effective absorption band (EAB) of 4.64 GHz and a minimum reflection loss (RLmin) of -26 dB at 1.6 mm. The excellent performance can be attributed to the synergistic effects of conductive loss, dielectric loss, magnetic loss, and multiple reflection loss within the graphene-based core-shell-like composite. This work demonstrates a convenient, rapid, eco-friendly, and cost-effective method for synthesizing high-performance microwave absorption materials (MAMs).
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Affiliation(s)
- Ahmed Elhassan
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China;
| | - Xiaoshuang Lv
- Shanghai Frontiers Science Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai 201620, China
| | - Ibrahim Abdalla
- Shanghai Key Laboratory for Development and Application of Metal Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai 201804, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| | - Zhaoling Li
- Shanghai Frontiers Science Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai 201620, China
- National Innovation Center of Advanced Dyeing & Finishing Technology, Tai’an 271000, China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
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Du Y, Liu Y, Wang A, Kong J. Research progress and future perspectives on electromagnetic wave absorption of fibrous materials. iScience 2023; 26:107873. [PMID: 37817934 PMCID: PMC10561061 DOI: 10.1016/j.isci.2023.107873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/12/2023] Open
Abstract
Electromagnetic waves have caused great harm to military safety, high-frequency electronic components, and precision instruments, and so forth, which urgently requires the development of lightweight, high-efficiency, broadband electromagnetic waves (EMW) absorbing materials for protection. As the basic fibrous materials, carbon fibers (CFs) and SiC fibers (SiCf) have been widely applied in EMW absorption due to their intrinsic characteristics of low density, high mechanical properties, high conductivity, and dielectric loss mechanism. Nevertheless, it has remained a great challenge to develop lightweight EMW-absorbing fibrous materials with strong absorption capability and broad frequency range. In this review, the fundamental electromagnetic attenuation mechanisms are firstly introduced. Furthermore, the preparation, structure, morphology, and absorbing performance of CFs and SiCf-based EMW absorbing composites are summarized. In addition, prospective research opportunities are highlighted toward the development of fibrous absorbing materials with the excellent absorption performance.
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Affiliation(s)
- Yuzhang Du
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
| | - Yichen Liu
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
| | - Aoao Wang
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
| | - Jie Kong
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
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In-situ preparation of CoFe 2O 4 nanoparticles on eggshell membrane-activated carbon for microwave absorption. Heliyon 2023; 9:e13256. [PMID: 36851968 PMCID: PMC9958450 DOI: 10.1016/j.heliyon.2023.e13256] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 01/21/2023] [Accepted: 01/23/2023] [Indexed: 02/17/2023] Open
Abstract
This study explores the potential of using cobalt ferrite (CF) nanoparticles grown in situ on eggshell membranes (ESM) to mitigate the increasing problem of electromagnetic interference (EMI). A simple carbonization process was adopted to synthesize CF nanoparticles on ESM. The study further examines the composites' surface morphology and chemical composition and evaluates their microwave absorption performance (MAP) at X-band frequency. Results showed that the composite of CF and ESM - CESM@CF, exhibited a strong RL peak value of -39.03 mm with an optimal thickness of 1.5 mm. The combination of CF and ESM demonstrates excellent impedance matching and EM wave attenuation. The presence of numerous interfaces, conduction loss from the morphology, interfacial polarisation, and dual influence from both CF and ESM contribute to the high MAP of the composite. CESM@CF composite is projected as an excellent biomass-based nano-composite for EM wave absorption applications.
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Soltani S, Khanian N, Roodbar Shojaei T, Shean Yaw Choong T, Asim N. Fundamental and recent progress on the strengthening strategies for fabrication of polyacrylonitrile (PAN)-derived electrospun CNFs: Precursors, spinning and collection, and post-treatments. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.03.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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5
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Lyu L, Zheng S, Wang F, Liu Y, Liu J. High-performance microwave absorption of MOF-derived Co 3O 4@N-doped carbon anchored on carbon foam. J Colloid Interface Sci 2021; 602:197-206. [PMID: 34126501 DOI: 10.1016/j.jcis.2021.05.184] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 05/31/2021] [Indexed: 10/21/2022]
Abstract
Absorbing materials can convert electromagnetic wave (EMW) energy into heat and other energy and dissipate it. Carbon materials can attenuate EMW by generating large conduction losses due to their high conductivity. The introduction of low dielectric materials can improve impedance matching caused by high conductivity. However, the density of materials compounded with carbon materials is too large, which affects the overall density of composite materials. Therefore, this problem is solved by matching melamine foam with ZIF-67. As an ultra-light material, the melamine foam-based carbon material can significantly reduce the density of composite materials, and its developed three-dimensional structure can cause multiple scattering of EMW. The large specific surface area and evenly distributed metal oxides obtained after annealing of ZIF-67 can provide ultra-low-density carbon materials and abundant interfacial polarization to further attenuate EMW. So far, the methods of self-growing materials on the surface of melamine foam have not been reported. We prepared a 500 nm Co3O4 nanosheet/carbon foam (CF) composite material coated on the surface by a two-step method. The sample had a maximum reflection loss of -46.58 dB at 10.72 GHz, and an effective absorption bandwidth (EAB) of 5.4 GHz. This research provides a new idea for the growth of porous materials on the surface of melamine foam-based carbon materials.
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Affiliation(s)
- Longfei Lyu
- School of Materials Science and Engineering, Shandong University, Jinan 250061, PR China
| | - Sinan Zheng
- School of Materials Science and Engineering, Shandong University, Jinan 250061, PR China
| | - Fenglong Wang
- School of Materials Science and Engineering, Shandong University, Jinan 250061, PR China
| | - Yue Liu
- School of Materials Science and Engineering, Shandong University, Jinan 250061, PR China
| | - Jiurong Liu
- School of Materials Science and Engineering, Shandong University, Jinan 250061, PR China.
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6
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Liao Z, Ma M, Tong Z, Bi Y, Chung KL, Qiao M, Ma Y, Ma A, Wu G, Li Z, Zhang Y. Fabrication of one-dimensional ZnFe 2O 4@carbon@MoS 2/FeS 2 composites as electromagnetic wave absorber. J Colloid Interface Sci 2021; 600:90-98. [PMID: 34004433 DOI: 10.1016/j.jcis.2021.04.142] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/28/2021] [Accepted: 04/29/2021] [Indexed: 01/17/2023]
Abstract
In this work, one-dimensional (1D) ZnFe2O4@carbon@MoS2/FeS2 composites were synthesized by hydrothermal method, magnetic-field-induced distillation-precipitation polymerization and high-temperature carbonization. The structure, morphology, composition, magnetic performance and electromagnetic (EM) wave absorbing properties of the composites were systematically studied. The composites show strong microwave absorption (MA) capacity with a minimum reflection loss (RLmin) value of -52.5 dB at 13.2 GHz, and have an effective absorption frequency range of 10.10-15.08 GHz with a bandwidth of 4.98 GHz when the thickness is 2.23 mm. It is expected that as-synthesized 1D ZnFe2O4@carbon@MoS2/FeS2 composites can be a promising EM wave absorption material.
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Affiliation(s)
- Zijian Liao
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
| | - Mingliang Ma
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China.
| | - Zhouyu Tong
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
| | - Yuxin Bi
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
| | - Kwok L Chung
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
| | - Mingtao Qiao
- Shaanxi Key Lab Nanomat & Technol, Xi'an University of Architecture & Technology, Xi'an 710021, People's Republic of China
| | - Yong Ma
- School of Material Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, People's Republic of China
| | - Aijie Ma
- School of Materials Science and Chemical Engineering, Xi'an Technological University, Xi'an 710021, People's Republic of China
| | - Guanglei Wu
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, People's Republic of China
| | - Zongxuan Li
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
| | - Yu Zhang
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
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7
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Huo Y, Tan Y, Zhao K, Lu Z, Zhong L, Tang Y. Enhanced electromagnetic wave absorption properties of Ni magnetic coating-functionalized SiC/C nanofibers synthesized by electrospinning and magnetron sputtering technology. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2020.138230] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Abstract
Polymer derived ceramics (PDCs) are promising candidates for usages as the functionalization of inorganic Si-based materials. Compared with traditional ceramics preparation methods, it is easier to prepare and functionalize ceramics with complex shapes by using the PDCs technique, thereby broadening the application fields of inorganic Si-based ceramics. In this article, we summarized the research progress and the trends of PDCs in recent years, especially most recent three years. Fabrication techniques (traditional preparation, 3D printing, template method, freezing casting techniques, etc.), microstructural tailoring mainly via additive doping, and properties (mechanical, thermal, electrical, as well as dielectric and electromagnetic wave absorption properties) of Si-based PDCs were explicated. Meanwhile, challenges and perspectives for PDCs techniques were proposed as well, with the purpose to enlighten multiple functionalized applications of polymer-derived Si-based ceramics.
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9
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Bao W, Chen C, Si Z. Development of sulfide, nitrogen co-doping hollow carbon with wideband electromagnetic absorption capability. RSC Adv 2020; 10:22570-22577. [PMID: 35514566 PMCID: PMC9054573 DOI: 10.1039/d0ra03921g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 05/30/2020] [Indexed: 11/21/2022] Open
Abstract
Exploration of an economic, easy-producing method to develop high-performance electromagnetic absorber has been a global research interest, owing to the increasingly electromagnetic pollution and interference. In this work, sulfide, nitrogen co-doping carbon (NS-HCS) has been successfully prepared by an in situ copolymer and subsequent calcination reaction. The morphologies and phase compositions of these as-prepared samples are analyzed via the transmission electron microscopy (TEM), element mappings, X-ray diffraction (XRD) and X-ray photoelectron spectrum (XPS). The result confirms the hollow shaped structure of amorphous carbon is constructed with various types of N, S based covalent bonds. The dotted N and S elements are contribution for the conductive loss and dipole polarization relaxation behavior. The minimum reflection loss value of -34 dB, and effective bandwidth reaches 6.8 GHz with only 1.6 mm. The as-prepared wideband electromagnetic absorber will pave a simple and effective method to obtain lightweight, broadband and thin thickness electromagnetic absorption materials.
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Affiliation(s)
- Wenli Bao
- School of Materials Science and Engineering, Changchun University of Science and Technology No. 7989, Weixing Road Changchun 130022 PR China .,Criminal Investigation Department, Jilin Police College Changchun 130117 PR China
| | - Cong Chen
- School of Materials Science and Engineering, Changchun University of Science and Technology No. 7989, Weixing Road Changchun 130022 PR China .,School of Physics and Electronic Information Engineering, Qinghai Nationalities University Xining 810007 PR China
| | - Zhenjun Si
- School of Materials Science and Engineering, Changchun University of Science and Technology No. 7989, Weixing Road Changchun 130022 PR China
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10
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Xie X, Ni C, Yu H, Du W, Sun X, Sun D. Facile fabrication of Co@C nanoparticles with different carbon-shell thicknesses: high-performance microwave absorber and efficient catalyst for the reduction of 4-nitrophenol. CrystEngComm 2020. [DOI: 10.1039/d0ce00250j] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Co@C nanoparticles with different carbon-shell thicknesses can be used as a multifunctional material for a high-performance microwave absorber and as an efficient catalyst for the reduction of 4-nitrophenol.
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Affiliation(s)
- XiuBo Xie
- School of Environmental and Material Engineering
- Yantai University
- Yantai
- China
| | - Cui Ni
- School of Environmental and Material Engineering
- Yantai University
- Yantai
- China
| | - Hongying Yu
- School of Materials
- Sun Yat-Sen University
- China
| | - Wei Du
- School of Environmental and Material Engineering
- Yantai University
- Yantai
- China
| | - Xueqin Sun
- School of Environmental and Material Engineering
- Yantai University
- Yantai
- China
| | - Dongbai Sun
- School of Materials
- Sun Yat-Sen University
- China
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11
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Xin W, Xi GQ, Cao WT, Ma C, Liu T, Ma MG, Bian J. Lightweight and flexible MXene/CNF/silver composite membranes with a brick-like structure and high-performance electromagnetic-interference shielding. RSC Adv 2019; 9:29636-29644. [PMID: 35531538 PMCID: PMC9071901 DOI: 10.1039/c9ra06399d] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 09/14/2019] [Indexed: 11/21/2022] Open
Abstract
With the increasing global electromagnetic pollution, it is more and more important to develop lightweight, flexible, and high electromagnetic shielding materials. Two-dimensional (2D) transition metal material MXenes have good conductivity and excellent electromagnetic shielding performance. Herein, a facile and effective method is reported to synthesize lightweight and flexible MXene/CNF/silver (MCS) composite membranes with a brick-like structure and high-performance electromagnetic interference shielding. MCS composite membranes have an electromagnetic shielding performance of ≈50.7 dB due to MXene self-reduction of silver nanoparticles and the brick-like structure, compared with that of MXene/CNF (MC) membranes (≈14.98 dB). In addition, the MCS composite membranes exhibit super-thin thickness (46 μm) and good tensile strength (up to 32.1 MPa), and their good mechanical properties are attributed to the addition of CNFs. Moreover, the MCS composite membranes show good electrical conductivity (588.2 S m−1). Therefore, MCS composite membranes that are lightweight and flexible and have high electromagnetic shielding performance can replace other electromagnetic shielding materials and be used in aerospace, weapon equipment, and wearable smart materials. Flexible and lightweight MXene/CNF/silver composite membranes are vacuum filtered to form a high electromagnetic shielding material with a brick-like structure. The membranes have an excellent electromagnetic shielding performance of 50.7 dB.![]()
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Affiliation(s)
- Wei Xin
- Engineering Research Center of Forestry Biomass Materials and Bioenergy
- Beijing Key Laboratory of Lignocellulosic Chemistry
- College of Materials Science and Technology
- Beijing Forestry University
- Beijing 100083
| | - Guo-Qiang Xi
- Engineering Research Center of Forestry Biomass Materials and Bioenergy
- Beijing Key Laboratory of Lignocellulosic Chemistry
- College of Materials Science and Technology
- Beijing Forestry University
- Beijing 100083
| | - Wen-Tao Cao
- Engineering Research Center of Forestry Biomass Materials and Bioenergy
- Beijing Key Laboratory of Lignocellulosic Chemistry
- College of Materials Science and Technology
- Beijing Forestry University
- Beijing 100083
| | - Chang Ma
- Engineering Research Center of Forestry Biomass Materials and Bioenergy
- Beijing Key Laboratory of Lignocellulosic Chemistry
- College of Materials Science and Technology
- Beijing Forestry University
- Beijing 100083
| | - Tong Liu
- Engineering Research Center of Forestry Biomass Materials and Bioenergy
- Beijing Key Laboratory of Lignocellulosic Chemistry
- College of Materials Science and Technology
- Beijing Forestry University
- Beijing 100083
| | - Ming-Guo Ma
- Engineering Research Center of Forestry Biomass Materials and Bioenergy
- Beijing Key Laboratory of Lignocellulosic Chemistry
- College of Materials Science and Technology
- Beijing Forestry University
- Beijing 100083
| | - Jing Bian
- Engineering Research Center of Forestry Biomass Materials and Bioenergy
- Beijing Key Laboratory of Lignocellulosic Chemistry
- College of Materials Science and Technology
- Beijing Forestry University
- Beijing 100083
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Feng A, Ma M, Jia Z, Zhang M, Wu G. Fabrication of NiFe2O4@carbon fiber coated with phytic acid-doped polyaniline composite and its application as an electromagnetic wave absorber. RSC Adv 2019; 9:25932-25941. [PMID: 35530055 PMCID: PMC9070089 DOI: 10.1039/c9ra04219a] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 07/30/2019] [Indexed: 11/24/2022] Open
Abstract
In this work, a novel CF@NiFe2O4 composite coated with phytic acid-doped polyaniline (CF@NiFe2O4@p-PANI) was facilely synthesized. First, a typical solvothermal reaction was applied to obtain the CF@NiFe2O4 composite, and then the phytic acid-doped polyaniline was grown in situ on the surface of the CF@NiFe2O4 composite. The morphological structure, chemical composition, and surface functional group distribution of this hybrid were systematically evaluated. The magnetic saturation (Ms) value of the hybrid is 29.9 emu g−1, which represents an improvement in the magnetic loss. According to its reflection loss curve, the hybrid exhibits a superior EM wave absorption capacity, with a minimum reflection loss value and effective absorbing bandwidth of −46 dB when the sample thickness is 2.9 mm, and an effective absorption bandwidth of 5 GHz when the sample thickness is 1.5 mm. The excellent performance of this hybrid can mainly be attributed to its ideal matching of magnetic loss and dielectric loss, interfacial polarizations, eddy current loss and interface relaxation. This new material has the potential to be a superior electromagnetic wave absorber or applied as a functional filler to modify resin matrices. A novel CF@NiFe2O4@p-PANI hybrid was designed. Phytic acid-doped polyaniline was applied in the synthesis of an EM wave absorber. The hybrid exhibits excellent EM wave-absorbing performance.![]()
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Affiliation(s)
- Ailing Feng
- Institute of Physics & Optoelectronics Technology
- Baoji University of Arts and Sciences
- Baoji 721016
- P. R. China
| | - Mingliang Ma
- Research Institute of Functional Materials
- School of Civil Engineering
- Qingdao University of Technology
- Qingdao 266033
- P. R. China
| | - Zirui Jia
- Institute of Materials for Energy and Environment
- State Key Laboratory of Bio-fibers and Eco-textiles
- College of Materials Science and Engineering
- Qingdao University
- Qingdao 266071
| | - Meng Zhang
- College of Electromechanical Engineering
- Key Laboratory of Polymer Material Advanced Manufacturing's Technology of Shandong Province
- Qingdao University of Science and Technology
- Qingdao
- China
| | - Guanglei Wu
- Institute of Materials for Energy and Environment
- State Key Laboratory of Bio-fibers and Eco-textiles
- College of Materials Science and Engineering
- Qingdao University
- Qingdao 266071
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Abdalla I, Salim A, Zhu M, Yu J, Li Z, Ding B. Light and Flexible Composite Nanofibrous Membranes for High-Efficiency Electromagnetic Absorption in a Broad Frequency. ACS APPLIED MATERIALS & INTERFACES 2018; 10:44561-44569. [PMID: 30484305 DOI: 10.1021/acsami.8b17514] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
With the fast advancement of up-to-date communication technologies, electromagnetic wave (EMW) absorption materials are widely required for various applications. However, it is still a big challenge to produce lightweight, flexible, and high-efficiency EMW absorption materials in a broad-ranging frequency. Herein, we designed to fabricate the magnetic and dielectric nanofibrous membranes which can be effectively used as EMW absorption materials by facile electrospinning process. The as-fabricated composite carbon nanofibers (CNFs), which combined the components of nickel, cobalt antioxidant nanoparticles, and carbon nanotubes, exhibited outstanding magnetic and dielectric properties and strong absorption ability in a wide frequency range. These nanoparticles encapsulated in CNFs are extremely beneficial to the electrical conductivity of the composites through decreasing the contact loss within the CNFs by formation of the metal-metal interfaces. Correspondingly, the RL value of -46.60 dB was reached at 4.88 GHz frequency range with a layer thickness of 5.5 mm for these mechanically light and flexible membranes. The enhanced absorption performance (<-10 dB) in the wide frequency band (4.16-18 GHz) can be achieved by selecting a suitable thickness of the material. Results demonstrate that the permittivity and permeability of developed samples have been largely improved because of the integrated interaction of all introduced components in the structure. The composite membranes are a promising candidate for scalable, lightweight, and high-performance EMW absorption materials in the frequency range from C band to Ku band (4-18 GHz).
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Affiliation(s)
| | | | | | - Jianyong Yu
- Innovation Center for Textile Science and Technology , Donghua University , Shanghai 200051 , China
| | - Zhaoling Li
- Innovation Center for Textile Science and Technology , Donghua University , Shanghai 200051 , China
| | - Bin Ding
- Innovation Center for Textile Science and Technology , Donghua University , Shanghai 200051 , China
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14
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Mg0.5Zn0.5Fe2O4-polyurethane thin nanocomposite coating as broadband microwave absorber. SN APPLIED SCIENCES 2018. [DOI: 10.1007/s42452-018-0041-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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15
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Jin S, Yu J, Zheng Y, Wang WY, Xin B, Kan CW. Preparation and Characterization of Electrospun PAN/PSA Carbonized Nanofibers: Experiment and Simulation Study. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E821. [PMID: 30314395 PMCID: PMC6215235 DOI: 10.3390/nano8100821] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 09/25/2018] [Accepted: 10/10/2018] [Indexed: 11/24/2022]
Abstract
In this study, we simulated the electric field distribution of side-by-side electrospinning by using the finite element method (FEM), and studied the effects of spinneret wall thickness, spinning voltage and receiving distance on the distribution of the electrostatic field. The receiving distance was selected as a variable in the experimental, a series of PAN/PSA composite nanofiber membranes were prepared by using a self-made side by side electrospinning device. The membranes were tested by Fourier-transform infrared (FTIR), thermogravimetric analysis (TG), and scanning electron microscope (SEM). The prepared membranes were also treated by high-temperature treatment, and the change of fiber diameter and conductivity of the membrane before and after high-temperature treatment were studied. It was found that the PAN/PSA carbonized nanofibers could achieve a better performance in heat resistance and conductivity at 200 mm receiving distance.
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Affiliation(s)
- Shixin Jin
- School of Fashion Engineering, Shanghai University of Engineering Science, Shanghai 201620, China.
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Jiali Yu
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Yuansheng Zheng
- School of Fashion Engineering, Shanghai University of Engineering Science, Shanghai 201620, China.
| | - Wen-Yi Wang
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Binjie Xin
- School of Fashion Engineering, Shanghai University of Engineering Science, Shanghai 201620, China.
| | - Chi-Wai Kan
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
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