Configuration of Multifunctional Polyimide/Graphene/Fe<sub>3</sub>O<sub>4</sub> 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<sub>3</sub>O<sub>4</sub>...
Guardado en:
| Autores principales: | , , , , |
|---|---|
| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
|
| Materias: | |
| Acceso en línea: | https://doaj.org/article/eceba9acf1554d71b6c5c6b7ade8dcef |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| id |
oai:doaj.org-article:eceba9acf1554d71b6c5c6b7ade8dcef |
|---|---|
| record_format |
dspace |
| spelling |
oai:doaj.org-article:eceba9acf1554d71b6c5c6b7ade8dcef2021-11-25T18:31:54ZConfiguration of Multifunctional Polyimide/Graphene/Fe<sub>3</sub>O<sub>4</sub> Hybrid Aerogel-Based Phase-Change Composite Films for Electromagnetic and Infrared Bi-Stealth10.3390/nano111130382079-4991https://doaj.org/article/eceba9acf1554d71b6c5c6b7ade8dcef2021-11-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/3038https://doaj.org/toc/2079-4991Electromagnetic (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<sub>3</sub>O<sub>4</sub> 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<sub>3</sub>O<sub>4</sub> nanoparticles through prepolymerizaton, film casting, freeze-drying, and thermal imidization, followed by loading molten PEG through vacuum impregnation. The construction of PI/graphene/Fe<sub>3</sub>O<sub>4</sub> 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<sub>3</sub>O<sub>4</sub> 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.Tao ShiZhiheng ZhengHuan LiuDezhen WuXiaodong WangMDPI AGarticleelectromagnetic and infrared bi-stealthphase change materialpolyimide-based aerogelsgraphene/Fe<sub>3</sub>O<sub>4</sub> hybridthermal regulationmicrowave absorptionChemistryQD1-999ENNanomaterials, Vol 11, Iss 3038, p 3038 (2021) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
electromagnetic and infrared bi-stealth phase change material polyimide-based aerogels graphene/Fe<sub>3</sub>O<sub>4</sub> hybrid thermal regulation microwave absorption Chemistry QD1-999 |
| spellingShingle |
electromagnetic and infrared bi-stealth phase change material polyimide-based aerogels graphene/Fe<sub>3</sub>O<sub>4</sub> hybrid thermal regulation microwave absorption Chemistry QD1-999 Tao Shi Zhiheng Zheng Huan Liu Dezhen Wu Xiaodong Wang Configuration of Multifunctional Polyimide/Graphene/Fe<sub>3</sub>O<sub>4</sub> Hybrid Aerogel-Based Phase-Change Composite Films for Electromagnetic and Infrared Bi-Stealth |
| 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<sub>3</sub>O<sub>4</sub> 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<sub>3</sub>O<sub>4</sub> nanoparticles through prepolymerizaton, film casting, freeze-drying, and thermal imidization, followed by loading molten PEG through vacuum impregnation. The construction of PI/graphene/Fe<sub>3</sub>O<sub>4</sub> 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<sub>3</sub>O<sub>4</sub> 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. |
| format |
article |
| author |
Tao Shi Zhiheng Zheng Huan Liu Dezhen Wu Xiaodong Wang |
| author_facet |
Tao Shi Zhiheng Zheng Huan Liu Dezhen Wu Xiaodong Wang |
| author_sort |
Tao Shi |
| title |
Configuration of Multifunctional Polyimide/Graphene/Fe<sub>3</sub>O<sub>4</sub> Hybrid Aerogel-Based Phase-Change Composite Films for Electromagnetic and Infrared Bi-Stealth |
| title_short |
Configuration of Multifunctional Polyimide/Graphene/Fe<sub>3</sub>O<sub>4</sub> Hybrid Aerogel-Based Phase-Change Composite Films for Electromagnetic and Infrared Bi-Stealth |
| title_full |
Configuration of Multifunctional Polyimide/Graphene/Fe<sub>3</sub>O<sub>4</sub> Hybrid Aerogel-Based Phase-Change Composite Films for Electromagnetic and Infrared Bi-Stealth |
| title_fullStr |
Configuration of Multifunctional Polyimide/Graphene/Fe<sub>3</sub>O<sub>4</sub> Hybrid Aerogel-Based Phase-Change Composite Films for Electromagnetic and Infrared Bi-Stealth |
| title_full_unstemmed |
Configuration of Multifunctional Polyimide/Graphene/Fe<sub>3</sub>O<sub>4</sub> Hybrid Aerogel-Based Phase-Change Composite Films for Electromagnetic and Infrared Bi-Stealth |
| title_sort |
configuration of multifunctional polyimide/graphene/fe<sub>3</sub>o<sub>4</sub> hybrid aerogel-based phase-change composite films for electromagnetic and infrared bi-stealth |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/eceba9acf1554d71b6c5c6b7ade8dcef |
| work_keys_str_mv |
AT taoshi configurationofmultifunctionalpolyimidegraphenefesub3subosub4subhybridaerogelbasedphasechangecompositefilmsforelectromagneticandinfraredbistealth AT zhihengzheng configurationofmultifunctionalpolyimidegraphenefesub3subosub4subhybridaerogelbasedphasechangecompositefilmsforelectromagneticandinfraredbistealth AT huanliu configurationofmultifunctionalpolyimidegraphenefesub3subosub4subhybridaerogelbasedphasechangecompositefilmsforelectromagneticandinfraredbistealth AT dezhenwu configurationofmultifunctionalpolyimidegraphenefesub3subosub4subhybridaerogelbasedphasechangecompositefilmsforelectromagneticandinfraredbistealth AT xiaodongwang configurationofmultifunctionalpolyimidegraphenefesub3subosub4subhybridaerogelbasedphasechangecompositefilmsforelectromagneticandinfraredbistealth |
| _version_ |
1718411052213862400 |