Ultrathin Multilayer Textile Structure with Enhanced EMI Shielding and Air-Permeable Properties
A textile material’s electromagnetic interference (EMI) shielding effectiveness mainly depends on the material’s electrical conductivity and porosity. Enhancing the conductivity of the material surface can effectively improve the electromagnetic shielding effectiveness. However, the use of highly co...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/13/23/4176 |
| _version_ | 1797507272381825024 |
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| author | Shi Hu Dan Wang Aravin Prince Periyasamy Dana Kremenakova Jiri Militky Maros Tunak |
| author_facet | Shi Hu Dan Wang Aravin Prince Periyasamy Dana Kremenakova Jiri Militky Maros Tunak |
| author_sort | Shi Hu |
| collection | DOAJ |
| description | A textile material’s electromagnetic interference (EMI) shielding effectiveness mainly depends on the material’s electrical conductivity and porosity. Enhancing the conductivity of the material surface can effectively improve the electromagnetic shielding effectiveness. However, the use of highly conductive materials increases production cost, and limits the enhancement of electromagnetic shielding effectiveness. This work aims to improve the EMI shielding effectiveness (EMSE) by using an ultrathin multilayer structure and the air-permeable textile MEFTEX. MEFTEX is a copper-coated non-woven ultrathin fabric. The single-layer MEFTEX SE test results show that the higher its mass per unit area (MEFTEX 30), the better its SE property between 56.14 dB and 62.53 dB in the frequency band 30 MHz–1.5 GHz. Through comparative testing of three groups samples, a higher electromagnetic shielding effect is obtained via multilayer structures due to the increase in thickness and decrease of volume electrical resistivity. Compared to a single layer, the EMI shielding effectiveness of five layers of MEFTEX increases by 44.27–83.8%. Due to its ultrathin and porous structure, and considering the balance from porosity and SE, MEFTEX 10 with three to four layers can still maintain air permeability from 2942 L/m<sup>2</sup>/s–3658 L/m<sup>2</sup>/s. |
| first_indexed | 2024-03-10T04:46:12Z |
| format | Article |
| id | doaj.art-2837dd2c7d094c77b15a35f8b530b299 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T04:46:12Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-2837dd2c7d094c77b15a35f8b530b2992023-11-23T02:54:02ZengMDPI AGPolymers2073-43602021-11-011323417610.3390/polym13234176Ultrathin Multilayer Textile Structure with Enhanced EMI Shielding and Air-Permeable PropertiesShi Hu0Dan Wang1Aravin Prince Periyasamy2Dana Kremenakova3Jiri Militky4Maros Tunak5Department of Material Engineering, Faculty of Textile Engineering, Technical University of Liberec, Studenska, 1402/2, 46117 Liberec, Czech RepublicDepartment of Material Engineering, Faculty of Textile Engineering, Technical University of Liberec, Studenska, 1402/2, 46117 Liberec, Czech RepublicDepartment of Material Engineering, Faculty of Textile Engineering, Technical University of Liberec, Studenska, 1402/2, 46117 Liberec, Czech RepublicDepartment of Material Engineering, Faculty of Textile Engineering, Technical University of Liberec, Studenska, 1402/2, 46117 Liberec, Czech RepublicDepartment of Material Engineering, Faculty of Textile Engineering, Technical University of Liberec, Studenska, 1402/2, 46117 Liberec, Czech RepublicDepartment of Textile Evaluation, Faculty of Textile Engineering, Technical University of Liberec, Studenska, 1402/2, 46117 Liberec, Czech RepublicA textile material’s electromagnetic interference (EMI) shielding effectiveness mainly depends on the material’s electrical conductivity and porosity. Enhancing the conductivity of the material surface can effectively improve the electromagnetic shielding effectiveness. However, the use of highly conductive materials increases production cost, and limits the enhancement of electromagnetic shielding effectiveness. This work aims to improve the EMI shielding effectiveness (EMSE) by using an ultrathin multilayer structure and the air-permeable textile MEFTEX. MEFTEX is a copper-coated non-woven ultrathin fabric. The single-layer MEFTEX SE test results show that the higher its mass per unit area (MEFTEX 30), the better its SE property between 56.14 dB and 62.53 dB in the frequency band 30 MHz–1.5 GHz. Through comparative testing of three groups samples, a higher electromagnetic shielding effect is obtained via multilayer structures due to the increase in thickness and decrease of volume electrical resistivity. Compared to a single layer, the EMI shielding effectiveness of five layers of MEFTEX increases by 44.27–83.8%. Due to its ultrathin and porous structure, and considering the balance from porosity and SE, MEFTEX 10 with three to four layers can still maintain air permeability from 2942 L/m<sup>2</sup>/s–3658 L/m<sup>2</sup>/s.https://www.mdpi.com/2073-4360/13/23/4176electromagnetic shielding effectivenessmultilayer structureporosityair permeability |
| spellingShingle | Shi Hu Dan Wang Aravin Prince Periyasamy Dana Kremenakova Jiri Militky Maros Tunak Ultrathin Multilayer Textile Structure with Enhanced EMI Shielding and Air-Permeable Properties Polymers electromagnetic shielding effectiveness multilayer structure porosity air permeability |
| title | Ultrathin Multilayer Textile Structure with Enhanced EMI Shielding and Air-Permeable Properties |
| title_full | Ultrathin Multilayer Textile Structure with Enhanced EMI Shielding and Air-Permeable Properties |
| title_fullStr | Ultrathin Multilayer Textile Structure with Enhanced EMI Shielding and Air-Permeable Properties |
| title_full_unstemmed | Ultrathin Multilayer Textile Structure with Enhanced EMI Shielding and Air-Permeable Properties |
| title_short | Ultrathin Multilayer Textile Structure with Enhanced EMI Shielding and Air-Permeable Properties |
| title_sort | ultrathin multilayer textile structure with enhanced emi shielding and air permeable properties |
| topic | electromagnetic shielding effectiveness multilayer structure porosity air permeability |
| url | https://www.mdpi.com/2073-4360/13/23/4176 |
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