Design and Preparation of Flexible Graphene/Nonwoven Composites with Simultaneous Broadband Absorption and Stable Properties
As the world moves into the 21st century, the complex electromagnetic wave environment is receiving widespread attention due to its impact on human health, suggesting the critical importance of wearable absorbing materials. In this paper, graphene nonwoven (RGO/NW) composites were prepared by diffus...
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MDPI AG
2023-02-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/4/634 |
| _version_ | 1797618976387235840 |
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| author | Song Bi Yongzhi Song Genliang Hou Hao Li Nengjun Yang Zhaohui Liu |
| author_facet | Song Bi Yongzhi Song Genliang Hou Hao Li Nengjun Yang Zhaohui Liu |
| author_sort | Song Bi |
| collection | DOAJ |
| description | As the world moves into the 21st century, the complex electromagnetic wave environment is receiving widespread attention due to its impact on human health, suggesting the critical importance of wearable absorbing materials. In this paper, graphene nonwoven (RGO/NW) composites were prepared by diffusely distributing graphene sheets in a polypropylene three-dimensional framework through Hummers’ method. Moreover, based on the Jaumann structural material design concept, the RGO/NW composite was designed as a multilayer microwave absorber, with self-recovery capability. It achieves effective absorption (reflection loss of −10 dB) in the 2~18 GHz electromagnetic wave frequency domain, exhibiting a larger bandwidth than that reported in the literature for absorbers of equivalent thickness. In addition, the rationally designed three-layer sample has an electromagnetic wave absorption of over 97% (reflection loss of −15 dB) of the bandwidth over 14 GHz. In addition, due to the physical and chemical stability of graphene and the deformation recovery ability of nonwoven fabric, the absorber also shows good deformation recovery ability and stable absorption performance. This broadband absorption and extreme environmental adaptability make this flexible absorber promising for various applications, especially for personnel wearable devices. |
| first_indexed | 2024-03-11T08:20:15Z |
| format | Article |
| id | doaj.art-d3ed7df93a7244bf80a44fe911720d9d |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T08:20:15Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-d3ed7df93a7244bf80a44fe911720d9d2023-11-16T22:26:51ZengMDPI AGNanomaterials2079-49912023-02-0113463410.3390/nano13040634Design and Preparation of Flexible Graphene/Nonwoven Composites with Simultaneous Broadband Absorption and Stable PropertiesSong Bi0Yongzhi Song1Genliang Hou2Hao Li3Nengjun Yang4Zhaohui Liu5304 Department, Xi’an Research Institute of High-Tech, Xi’an 710025, China304 Department, Xi’an Research Institute of High-Tech, Xi’an 710025, China304 Department, Xi’an Research Institute of High-Tech, Xi’an 710025, China304 Department, Xi’an Research Institute of High-Tech, Xi’an 710025, China304 Department, Xi’an Research Institute of High-Tech, Xi’an 710025, ChinaCollege of Weapon Science and Technology, Xi’an Technological University, Xi’an 710025, ChinaAs the world moves into the 21st century, the complex electromagnetic wave environment is receiving widespread attention due to its impact on human health, suggesting the critical importance of wearable absorbing materials. In this paper, graphene nonwoven (RGO/NW) composites were prepared by diffusely distributing graphene sheets in a polypropylene three-dimensional framework through Hummers’ method. Moreover, based on the Jaumann structural material design concept, the RGO/NW composite was designed as a multilayer microwave absorber, with self-recovery capability. It achieves effective absorption (reflection loss of −10 dB) in the 2~18 GHz electromagnetic wave frequency domain, exhibiting a larger bandwidth than that reported in the literature for absorbers of equivalent thickness. In addition, the rationally designed three-layer sample has an electromagnetic wave absorption of over 97% (reflection loss of −15 dB) of the bandwidth over 14 GHz. In addition, due to the physical and chemical stability of graphene and the deformation recovery ability of nonwoven fabric, the absorber also shows good deformation recovery ability and stable absorption performance. This broadband absorption and extreme environmental adaptability make this flexible absorber promising for various applications, especially for personnel wearable devices.https://www.mdpi.com/2079-4991/13/4/634RGO/NWJaumann absorberperformance stabilitymicrowave absorptionreflection loss |
| spellingShingle | Song Bi Yongzhi Song Genliang Hou Hao Li Nengjun Yang Zhaohui Liu Design and Preparation of Flexible Graphene/Nonwoven Composites with Simultaneous Broadband Absorption and Stable Properties Nanomaterials RGO/NW Jaumann absorber performance stability microwave absorption reflection loss |
| title | Design and Preparation of Flexible Graphene/Nonwoven Composites with Simultaneous Broadband Absorption and Stable Properties |
| title_full | Design and Preparation of Flexible Graphene/Nonwoven Composites with Simultaneous Broadband Absorption and Stable Properties |
| title_fullStr | Design and Preparation of Flexible Graphene/Nonwoven Composites with Simultaneous Broadband Absorption and Stable Properties |
| title_full_unstemmed | Design and Preparation of Flexible Graphene/Nonwoven Composites with Simultaneous Broadband Absorption and Stable Properties |
| title_short | Design and Preparation of Flexible Graphene/Nonwoven Composites with Simultaneous Broadband Absorption and Stable Properties |
| title_sort | design and preparation of flexible graphene nonwoven composites with simultaneous broadband absorption and stable properties |
| topic | RGO/NW Jaumann absorber performance stability microwave absorption reflection loss |
| url | https://www.mdpi.com/2079-4991/13/4/634 |
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