Sandwich‐Structured Fluorinated Polyimide Aerogel/Paraffin Phase‐Change Composites Simultaneously Enables Gradient Thermal Protection and Electromagnetic Wave Transmission
Abstract There is an emerging requirement of advanced functional materials for simultaneous thermal protection and electromagnetic wave‐transparent transmission applications. A novel polyimide (PI) aerogel‐based sandwich‐structural composite is developed to meet such a requirement in this study. Thi...
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| Format: | Article |
| Language: | English |
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Wiley
2025-02-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202411758 |
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| author | Tao Shi Jianwei Jing Zhiqiang Qian Gaojie Wu Guofeng Tian Huan Liu Xiaodong Wang |
| author_facet | Tao Shi Jianwei Jing Zhiqiang Qian Gaojie Wu Guofeng Tian Huan Liu Xiaodong Wang |
| author_sort | Tao Shi |
| collection | DOAJ |
| description | Abstract There is an emerging requirement of advanced functional materials for simultaneous thermal protection and electromagnetic wave‐transparent transmission applications. A novel polyimide (PI) aerogel‐based sandwich‐structural composite is developed to meet such a requirement in this study. This composite is based on a unidirectional fluorinated PI (FPI) aerogel as a lower layer, a nondirectional conventional PI aerogel as a middle layer, and a nondirectional FPI aerogel/paraffin phase‐change composite as an upper layer. The lower layer exhibits a unique unidirectional porous microstructure and an ultralow dielectric constant of 1.04. The upper layer possesses a dynamical temperature regulation capability thanks to its loaded paraffin having a high latent heat capacity of 242.7 J g−1. The presence of the nondirectional PI aerogel middle layer can effectively prevent against the leakage of paraffin from the upper layer to the surface of the composite. Through a rational integration of three functional layers, the developed sandwich‐structured composite not only can provide gradient thermal protection for hot objects over a long period but also exhibits an excellent wave‐transparent capability to establish communication between two electromagnetically shielded electronic devices. With such prominent thermal insulation and wave‐transparent functions, the sandwich‐structured composite exhibits great potential for specific applications in aircraft, spacecraft, radar systems, and satellite communication. |
| format | Article |
| id | doaj-art-fc96d92efbda4e0baa17b9351da59c0d |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-fc96d92efbda4e0baa17b9351da59c0d2025-02-04T13:14:54ZengWileyAdvanced Science2198-38442025-02-01125n/an/a10.1002/advs.202411758Sandwich‐Structured Fluorinated Polyimide Aerogel/Paraffin Phase‐Change Composites Simultaneously Enables Gradient Thermal Protection and Electromagnetic Wave TransmissionTao Shi0Jianwei Jing1Zhiqiang Qian2Gaojie Wu3Guofeng Tian4Huan Liu5Xiaodong Wang6State Key Laboratory of Organic–Inorganic Composites Beijing University of Chemical Technology Beijing 100029 ChinaState Key Laboratory of Polymer Materials Engineering College of Polymer Science and Engineering Sichuan University Chengdu Sichuan 610065 ChinaKey Laboratory of Green and High‐End Utilization of Salt Lake Resources Qinghai Institute of Salt Lakes Chinese Academy of Sciences Qinghai Provincial Key Laboratory of Resources and Chemistry of Salt Lakes Xining Qinghai 810008 ChinaKey Laboratory of Carbon Fiber and Functional Polymers (The Ministry of Education) Beijing University of Chemical Technology Beijing 100029 ChinaKey Laboratory of Carbon Fiber and Functional Polymers (The Ministry of Education) Beijing University of Chemical Technology Beijing 100029 ChinaState Key Laboratory of Organic–Inorganic Composites Beijing University of Chemical Technology Beijing 100029 ChinaState Key Laboratory of Organic–Inorganic Composites Beijing University of Chemical Technology Beijing 100029 ChinaAbstract There is an emerging requirement of advanced functional materials for simultaneous thermal protection and electromagnetic wave‐transparent transmission applications. A novel polyimide (PI) aerogel‐based sandwich‐structural composite is developed to meet such a requirement in this study. This composite is based on a unidirectional fluorinated PI (FPI) aerogel as a lower layer, a nondirectional conventional PI aerogel as a middle layer, and a nondirectional FPI aerogel/paraffin phase‐change composite as an upper layer. The lower layer exhibits a unique unidirectional porous microstructure and an ultralow dielectric constant of 1.04. The upper layer possesses a dynamical temperature regulation capability thanks to its loaded paraffin having a high latent heat capacity of 242.7 J g−1. The presence of the nondirectional PI aerogel middle layer can effectively prevent against the leakage of paraffin from the upper layer to the surface of the composite. Through a rational integration of three functional layers, the developed sandwich‐structured composite not only can provide gradient thermal protection for hot objects over a long period but also exhibits an excellent wave‐transparent capability to establish communication between two electromagnetically shielded electronic devices. With such prominent thermal insulation and wave‐transparent functions, the sandwich‐structured composite exhibits great potential for specific applications in aircraft, spacecraft, radar systems, and satellite communication.https://doi.org/10.1002/advs.202411758fluorinated polyimide aerogelheat insulationlow dielectric constantphase change materialssandwich‐structured composites |
| spellingShingle | Tao Shi Jianwei Jing Zhiqiang Qian Gaojie Wu Guofeng Tian Huan Liu Xiaodong Wang Sandwich‐Structured Fluorinated Polyimide Aerogel/Paraffin Phase‐Change Composites Simultaneously Enables Gradient Thermal Protection and Electromagnetic Wave Transmission Advanced Science fluorinated polyimide aerogel heat insulation low dielectric constant phase change materials sandwich‐structured composites |
| title | Sandwich‐Structured Fluorinated Polyimide Aerogel/Paraffin Phase‐Change Composites Simultaneously Enables Gradient Thermal Protection and Electromagnetic Wave Transmission |
| title_full | Sandwich‐Structured Fluorinated Polyimide Aerogel/Paraffin Phase‐Change Composites Simultaneously Enables Gradient Thermal Protection and Electromagnetic Wave Transmission |
| title_fullStr | Sandwich‐Structured Fluorinated Polyimide Aerogel/Paraffin Phase‐Change Composites Simultaneously Enables Gradient Thermal Protection and Electromagnetic Wave Transmission |
| title_full_unstemmed | Sandwich‐Structured Fluorinated Polyimide Aerogel/Paraffin Phase‐Change Composites Simultaneously Enables Gradient Thermal Protection and Electromagnetic Wave Transmission |
| title_short | Sandwich‐Structured Fluorinated Polyimide Aerogel/Paraffin Phase‐Change Composites Simultaneously Enables Gradient Thermal Protection and Electromagnetic Wave Transmission |
| title_sort | sandwich structured fluorinated polyimide aerogel paraffin phase change composites simultaneously enables gradient thermal protection and electromagnetic wave transmission |
| topic | fluorinated polyimide aerogel heat insulation low dielectric constant phase change materials sandwich‐structured composites |
| url | https://doi.org/10.1002/advs.202411758 |
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