Study on Electromagnetic Properties of Graphite/Graphene/Silver-Coated Copper Powder Monolayer Coated Composites

IF 0.7 4区 工程技术 Q3 MATERIALS SCIENCE, TEXTILES
Yuanjun Liu, X. Han, Wenli Bao, X. Ding, Xiaoming Zhao
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引用次数: 1

Abstract

Abstract With the rapid development of electronic technology and military techniques, electromagnetic protection materials are becoming more and more significant to people. Harmful electromagnetic radiation not only affects the normal operation of electronic equipments and military security, but also has a serious impact on human health. At present, using absorbing and shielding materials are effective means to reduce the harm of electromagnetic waves. In this project, graphite, graphene and silver-coated copper powder coated composites were prepared using PU-2540 polyurethane and adopting a coating process for the substrate on plain polyester/cotton fabric. The controlled variable method was used to prepare and study the electromagnetic properties of single-layer coating composites with different functional particle contents. The result showed that within the frequency range of 0.01GHz~1.0GHz, when the total mass of functional particles was 48% relative to that of the polyurethane, the value of the real part of the dielectric constant of the sample remained the largest and its polarization ability was the strongest. Within the frequency range of 0.08GHz~1.0GHz, when the content of functional particles was 24% relative to that of the polyurethane, the value of the imaginary part of the dielectric constant and the loss of the tangent value of the sample kept the maximum, and the loss and attenuation ability with respect to electromagnetic waves were both the strongest. Within the frequency range of 1.3GHz~2.0GHz, when the content of functional particles was 36% relative to that of the polyurethane, the value of the reflection loss of the sample was -26.93dB, and the minimum value of the reflection loss was obtained at a frequency of 1.6GHz, at the moment of which, the absorbing property of the sample was the best.
石墨/石墨烯/镀银铜粉单层复合材料电磁性能研究
摘要随着电子技术和军事技术的飞速发展,电磁防护材料越来越受到人们的重视。有害电磁辐射不仅影响电子设备的正常运行和军事安全,而且严重影响人体健康。目前,使用吸收和屏蔽材料是减少电磁波危害的有效手段。本项目以PU-2540聚氨酯为原料,采用普通聚酯/棉织物为基材,制备了石墨、石墨烯和银包铜粉涂层复合材料。采用控制变量法制备并研究了不同功能颗粒含量的单层涂层复合材料的电磁性能。结果表明,在0.01GHz~1.0GHz的频率范围内,当功能颗粒的总质量相对于聚氨酯的总质量为48%时,样品的介电常数实部值保持最大,极化能力最强。在0.08GHz~1.0GHz的频率范围内,当功能颗粒的含量相对于聚氨酯的含量为24%时,样品的介电常数虚部值和正切值损失保持最大,并且对电磁波的损失和衰减能力最强。在1.3GHz~2.0GHz的频率范围内,当功能颗粒的含量相对于聚氨酯的含量为36%时,样品的反射损耗值为-26.93dB,在1.6GHz的频率下获得了反射损耗的最小值,此时样品的吸收性能最好。
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来源期刊
Fibres & Textiles in Eastern Europe
Fibres & Textiles in Eastern Europe 工程技术-材料科学:纺织
CiteScore
1.60
自引率
11.10%
发文量
12
审稿时长
13.5 months
期刊介绍: FIBRES & TEXTILES in Eastern Europe is a peer reviewed bimonthly scientific journal devoted to current problems of fibre, textile and fibrous products’ science as well as general economic problems of textile industry worldwide. The content of the journal is available online as free open access. FIBRES & TEXTILES in Eastern Europe constitutes a forum for the exchange of information and the establishment of mutual contact for cooperation between scientific centres, as well as between science and industry.
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