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Configuration of Multifunctional Polyimide/Graphene/Fe(3)O(4) Hybrid Aerogel-Based Phase-Change Composite Films for Electromagnetic and Infrared Bi-Stealth

Electromagnetic (EM) and infrared (IR) stealth play an important role in the development of military technology and the defense industry. This study focused on developing a new type of multifunctional composite film based on polyimide (PI)/graphene/Fe(3)O(4) hybrid aerogel and polyethylene glycol (P...

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Detalles Bibliográficos
Autores principales: Shi, Tao, Zheng, Zhiheng, Liu, Huan, Wu, Dezhen, Wang, Xiaodong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8620502/
https://www.ncbi.nlm.nih.gov/pubmed/34835800
http://dx.doi.org/10.3390/nano11113038
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author Shi, Tao
Zheng, Zhiheng
Liu, Huan
Wu, Dezhen
Wang, Xiaodong
author_facet Shi, Tao
Zheng, Zhiheng
Liu, Huan
Wu, Dezhen
Wang, Xiaodong
author_sort Shi, Tao
collection PubMed
description Electromagnetic (EM) and infrared (IR) stealth play an important role in the development of military technology and the defense industry. This study focused on developing a new type of multifunctional composite film based on polyimide (PI)/graphene/Fe(3)O(4) hybrid aerogel and polyethylene glycol (PEG) as a phase change material (PCM) for EM and IR bi-stealth applications. The composite films were successfully fabricated by constructing a series of PI-based hybrid aerogels containing different contents of graphene nanosheets and Fe(3)O(4) nanoparticles through prepolymerizaton, film casting, freeze-drying, and thermal imidization, followed by loading molten PEG through vacuum impregnation. The construction of PI/graphene/Fe(3)O(4) hybrid aerogel films provides a robust, flexible, and microwave-absorption-functionalized support material for PEG. The resultant multifunctional composite films not only exhibit high microwave absorption effectiveness across a broad frequency range, but also show a good ability to implement thermal management and temperature regulation under a high latent-heat capacity of over 158 J/g. Most of all, the multifunctional composite films present a wideband absorption capability at 7.0–16.5 GHz and a minimum reflection loss of −38.5 dB. This results in excellent EM and IR bi-stealth performance through the effective wideband microwave absorption of graphene/Fe(3)O(4) component and the thermal buffer of PEG. This study offers a new strategy for the design and development of high-performance and lightweight EM–IR bi-stealth materials to meet the requirement of stealth and camouflage applications in military equipment and defense engineering.
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spelling pubmed-86205022021-11-27 Configuration of Multifunctional Polyimide/Graphene/Fe(3)O(4) Hybrid Aerogel-Based Phase-Change Composite Films for Electromagnetic and Infrared Bi-Stealth Shi, Tao Zheng, Zhiheng Liu, Huan Wu, Dezhen Wang, Xiaodong Nanomaterials (Basel) Article Electromagnetic (EM) and infrared (IR) stealth play an important role in the development of military technology and the defense industry. This study focused on developing a new type of multifunctional composite film based on polyimide (PI)/graphene/Fe(3)O(4) hybrid aerogel and polyethylene glycol (PEG) as a phase change material (PCM) for EM and IR bi-stealth applications. The composite films were successfully fabricated by constructing a series of PI-based hybrid aerogels containing different contents of graphene nanosheets and Fe(3)O(4) nanoparticles through prepolymerizaton, film casting, freeze-drying, and thermal imidization, followed by loading molten PEG through vacuum impregnation. The construction of PI/graphene/Fe(3)O(4) hybrid aerogel films provides a robust, flexible, and microwave-absorption-functionalized support material for PEG. The resultant multifunctional composite films not only exhibit high microwave absorption effectiveness across a broad frequency range, but also show a good ability to implement thermal management and temperature regulation under a high latent-heat capacity of over 158 J/g. Most of all, the multifunctional composite films present a wideband absorption capability at 7.0–16.5 GHz and a minimum reflection loss of −38.5 dB. This results in excellent EM and IR bi-stealth performance through the effective wideband microwave absorption of graphene/Fe(3)O(4) component and the thermal buffer of PEG. This study offers a new strategy for the design and development of high-performance and lightweight EM–IR bi-stealth materials to meet the requirement of stealth and camouflage applications in military equipment and defense engineering. MDPI 2021-11-12 /pmc/articles/PMC8620502/ /pubmed/34835800 http://dx.doi.org/10.3390/nano11113038 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Shi, Tao
Zheng, Zhiheng
Liu, Huan
Wu, Dezhen
Wang, Xiaodong
Configuration of Multifunctional Polyimide/Graphene/Fe(3)O(4) Hybrid Aerogel-Based Phase-Change Composite Films for Electromagnetic and Infrared Bi-Stealth
title Configuration of Multifunctional Polyimide/Graphene/Fe(3)O(4) Hybrid Aerogel-Based Phase-Change Composite Films for Electromagnetic and Infrared Bi-Stealth
title_full Configuration of Multifunctional Polyimide/Graphene/Fe(3)O(4) Hybrid Aerogel-Based Phase-Change Composite Films for Electromagnetic and Infrared Bi-Stealth
title_fullStr Configuration of Multifunctional Polyimide/Graphene/Fe(3)O(4) Hybrid Aerogel-Based Phase-Change Composite Films for Electromagnetic and Infrared Bi-Stealth
title_full_unstemmed Configuration of Multifunctional Polyimide/Graphene/Fe(3)O(4) Hybrid Aerogel-Based Phase-Change Composite Films for Electromagnetic and Infrared Bi-Stealth
title_short Configuration of Multifunctional Polyimide/Graphene/Fe(3)O(4) Hybrid Aerogel-Based Phase-Change Composite Films for Electromagnetic and Infrared Bi-Stealth
title_sort configuration of multifunctional polyimide/graphene/fe(3)o(4) hybrid aerogel-based phase-change composite films for electromagnetic and infrared bi-stealth
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8620502/
https://www.ncbi.nlm.nih.gov/pubmed/34835800
http://dx.doi.org/10.3390/nano11113038
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