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核心技术专利：CN118964589B侵权必究
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优化钴铁氧体纳米颗粒和石墨填料以赋予热塑性聚氨酯纳米复合材料优异的电磁干扰屏蔽性能。

Optimization of CoFeO nanoparticles and graphite fillers to endow thermoplastic polyurethane nanocomposites with superior electromagnetic interference shielding performance.

作者信息

Masař Milan, Machovský Michal, Urbánek Michal, Šuly Pavol, Hanulíková Barbora, Vilčáková Jarmila, Kuřitka Ivo, Yadav Raghvendra Singh

机构信息

Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín Trida Tomase Bati 5678 760 01 Zlín Czech Republic

Department of Chemistry, Faculty of Technology, Tomas Bata University in Zlín Vavrečkova 5669 760 01 Zlín Czech Republic.

出版信息

Nanoscale Adv. 2024 Mar 5;6(8):2149-2165. doi: 10.1039/d3na01053h. eCollection 2024 Apr 16.

DOI:10.1039/d3na01053h
PMID:38633039
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11019480/
Abstract

The rapid growth, integration, and miniaturization of electronics have raised significant concerns about how to handle issues with electromagnetic interference (EMI), which has increased demand for the creation of EMI shielding materials. In order to effectively shield against electromagnetic interference (EMI), this study developed a variety of thermoplastic polyurethane (TPU)-based nanocomposites in conjunction with CoFeO nanoparticles and graphite. The filler percentage and nanocomposite thickness were tuned and optimized. The designed GF15-TPU nanocomposite, which has a 5 mm thickness, 15 weight percent cobalt ferrite nanoparticles, and 35 weight percent graphite, showed the highest total EMI shielding effectiveness value of 41.5 dB in the 8.2-12.4 GHz frequency range, or 99.993% shielding efficiency, out of all the prepared polymer nanocomposites. According to experimental findings, the nanocomposite's dipole polarization, interfacial polarization, conduction loss, eddy current loss, natural resonance, exchange resonance, multiple scattering, and high attenuation significantly contribute to improving its electromagnetic interference shielding properties. The created TPU-based nanocomposites containing graphite and CoFeO nanoparticles have the potential to be used in communication systems, defense, spacecraft, and aircraft as EMI shielding materials.

摘要

电子设备的快速增长、集成化和小型化引发了人们对如何处理电磁干扰（EMI）问题的重大担忧，这增加了对电磁干扰屏蔽材料的需求。为了有效屏蔽电磁干扰（EMI），本研究开发了多种基于热塑性聚氨酯（TPU）的纳米复合材料，并结合了钴铁氧体纳米颗粒和石墨。对填料百分比和纳米复合材料厚度进行了调整和优化。所设计的GF15-TPU纳米复合材料厚度为5毫米，含有15重量百分比的钴铁氧体纳米颗粒和35重量百分比的石墨，在所有制备的聚合物纳米复合材料中，在8.2-12.4吉赫兹频率范围内显示出最高的总电磁干扰屏蔽效能值41.5分贝，屏蔽效率达99.993%。根据实验结果，纳米复合材料的偶极极化、界面极化、传导损耗、涡流损耗、自然共振、交换共振、多重散射和高衰减对改善其电磁干扰屏蔽性能有显著贡献。所制备的含有石墨和钴铁氧体纳米颗粒的基于TPU的纳米复合材料有潜力作为电磁干扰屏蔽材料用于通信系统、国防、航天器和飞机。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bd6/11019480/76ee5e80951d/d3na01053h-f12.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bd6/11019480/655d4026de8a/d3na01053h-f1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bd6/11019480/15250df1d82d/d3na01053h-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bd6/11019480/bab3d5c192d6/d3na01053h-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bd6/11019480/ac1d01451fae/d3na01053h-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bd6/11019480/8840242d3623/d3na01053h-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bd6/11019480/dfbfb66b7bff/d3na01053h-f11.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bd6/11019480/76ee5e80951d/d3na01053h-f12.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bd6/11019480/655d4026de8a/d3na01053h-f1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bd6/11019480/1bec31da8798/d3na01053h-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bd6/11019480/7b69a46fa542/d3na01053h-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bd6/11019480/3c033db47bea/d3na01053h-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bd6/11019480/15250df1d82d/d3na01053h-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bd6/11019480/bab3d5c192d6/d3na01053h-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bd6/11019480/ac1d01451fae/d3na01053h-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bd6/11019480/8840242d3623/d3na01053h-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bd6/11019480/dfbfb66b7bff/d3na01053h-f11.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bd6/11019480/76ee5e80951d/d3na01053h-f12.jpg

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引用本文的文献

[1]
Structure and Functional Characteristics of Novel Polyurethane/Ferrite Nanocomposites with Antioxidant Properties and Improved Biocompatibility for Vascular Graft Development.

Polymers (Basel). 2025-1-9

本文引用的文献

[1]
Realizing balanced flame retardancy and electromagnetic interference shielding in hierarchical elastomer nanocomposites.

J Colloid Interface Sci. 2024-1

[2]
Spongy ternary nano-composites with optimized impedance matching and synergistic effect for broadband and strong microwave absorption.

J Colloid Interface Sci. 2023-12-15

[3]
Lightweight polyurethane composite foam for electromagnetic interference shielding with high absorption characteristic.

J Colloid Interface Sci. 2023-11

[4]
Architecting fire safe hierarchical polymer nanocomposite films with excellent electromagnetic interference shielding via interface engineering.

J Colloid Interface Sci. 2023-6-15

[5]
Poly(Butylene Succinate) Hybrid Multi-Walled Carbon Nanotube/Iron Oxide Nanocomposites: Electromagnetic Shielding and Thermal Properties.

Polymers (Basel). 2023-1-18

[6]
The orientation and inhomogeneous distribution of carbon nanofibers and distinctive internal structure in polymer composites induced by 3D-printing enabling electromagnetic shielding regulation.

J Colloid Interface Sci. 2023-5-15

[7]
Rational design of heterointerface between MoO and N-doped carbon with tunable electromagnetic interference shielding capacity.

J Colloid Interface Sci. 2023-4-15

[8]
Synthesis of CoFeO magnetic nanoparticles for application in photocatalytic removal of azithromycin from wastewater.

Sci Rep. 2022-11-10

[9]
Highly Flexible Fabrics/Epoxy Composites with Hybrid Carbon Nanofillers for Absorption-Dominated Electromagnetic Interference Shielding.

Nanomicro Lett. 2022-9-17

[10]
Macroscopic Electromagnetic Cooperative Network-Enhanced MXene/Ni Chains Aerogel-Based Microwave Absorber with Ultra-Low Matching Thickness.

Nanomicro Lett. 2022-7-5

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