Development of Electromagnetic-Wave-Shielding Polyvinylidene Fluoride–Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene–Carbon Nanotube Composites by Improving Impedance Matching and Conductivity
Absorption-dominated electromagnetic interference (EMI) shielding is attained by improving impedance matching and conductivity through structural design. Polyvinylidene fluoride (PVDF)–Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene–single-walled carbon nanotubes (...
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| Format: | Article |
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MDPI AG
2023-01-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/3/417 |
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| author | Qimei Zhang Jian Cui Shuai Zhao Guangfa Zhang Ailin Gao Yehai Yan |
| author_facet | Qimei Zhang Jian Cui Shuai Zhao Guangfa Zhang Ailin Gao Yehai Yan |
| author_sort | Qimei Zhang |
| collection | DOAJ |
| description | Absorption-dominated electromagnetic interference (EMI) shielding is attained by improving impedance matching and conductivity through structural design. Polyvinylidene fluoride (PVDF)–Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene–single-walled carbon nanotubes (SWCNTs) composites with layered heterogeneous conductive fillers and segregated structures were prepared through electrostatic flocculation and hot pressing of the PVDF composite microsphere-coated MXene and SWCNTs in a layer-by-layer fashion. Results suggest that the heterogeneous fillers improve impedance matching and layered coating, and hot compression allows the MXene and SWCNTs to form a continuous conducting network at the PVDF interface, thereby conferring excellent conductivity to the composite. The PVDF-MXene-SWCNTs composite showed a conductivity of 2.75 S cm<sup>−1</sup> at 2.5% MXene and 1% SWCNTs. The EMI shielding efficiency (SE) and contribution from absorption loss to the total EMI SE of PVDF-MXene-SWCNTs were 46.1 dB and 85.7%, respectively. Furthermore, the PVDF-MXene-SWCNTs composite exhibited excellent dielectric losses and impedance matching. Therefore, the layered heteroconductive fillers in a segregated structure optimize impedance matching, provide excellent conductivity, and improve absorption-dominated electromagnetic shielding. |
| first_indexed | 2024-03-11T09:32:46Z |
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| id | doaj.art-cf85bc85218e4ae9a31e1cbf5f12befb |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T09:32:46Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-cf85bc85218e4ae9a31e1cbf5f12befb2023-11-16T17:34:24ZengMDPI AGNanomaterials2079-49912023-01-0113341710.3390/nano13030417Development of Electromagnetic-Wave-Shielding Polyvinylidene Fluoride–Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene–Carbon Nanotube Composites by Improving Impedance Matching and ConductivityQimei Zhang0Jian Cui1Shuai Zhao2Guangfa Zhang3Ailin Gao4Yehai Yan5Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, ChinaKey Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, ChinaKey Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, ChinaKey Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, ChinaKey Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, ChinaKey Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, ChinaAbsorption-dominated electromagnetic interference (EMI) shielding is attained by improving impedance matching and conductivity through structural design. Polyvinylidene fluoride (PVDF)–Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene–single-walled carbon nanotubes (SWCNTs) composites with layered heterogeneous conductive fillers and segregated structures were prepared through electrostatic flocculation and hot pressing of the PVDF composite microsphere-coated MXene and SWCNTs in a layer-by-layer fashion. Results suggest that the heterogeneous fillers improve impedance matching and layered coating, and hot compression allows the MXene and SWCNTs to form a continuous conducting network at the PVDF interface, thereby conferring excellent conductivity to the composite. The PVDF-MXene-SWCNTs composite showed a conductivity of 2.75 S cm<sup>−1</sup> at 2.5% MXene and 1% SWCNTs. The EMI shielding efficiency (SE) and contribution from absorption loss to the total EMI SE of PVDF-MXene-SWCNTs were 46.1 dB and 85.7%, respectively. Furthermore, the PVDF-MXene-SWCNTs composite exhibited excellent dielectric losses and impedance matching. Therefore, the layered heteroconductive fillers in a segregated structure optimize impedance matching, provide excellent conductivity, and improve absorption-dominated electromagnetic shielding.https://www.mdpi.com/2079-4991/13/3/417electromagnetic interference shieldingsegregated structurepolyvinylidene fluorideMXenesingle-walled carbon nanotubes |
| spellingShingle | Qimei Zhang Jian Cui Shuai Zhao Guangfa Zhang Ailin Gao Yehai Yan Development of Electromagnetic-Wave-Shielding Polyvinylidene Fluoride–Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene–Carbon Nanotube Composites by Improving Impedance Matching and Conductivity Nanomaterials electromagnetic interference shielding segregated structure polyvinylidene fluoride MXene single-walled carbon nanotubes |
| title | Development of Electromagnetic-Wave-Shielding Polyvinylidene Fluoride–Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene–Carbon Nanotube Composites by Improving Impedance Matching and Conductivity |
| title_full | Development of Electromagnetic-Wave-Shielding Polyvinylidene Fluoride–Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene–Carbon Nanotube Composites by Improving Impedance Matching and Conductivity |
| title_fullStr | Development of Electromagnetic-Wave-Shielding Polyvinylidene Fluoride–Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene–Carbon Nanotube Composites by Improving Impedance Matching and Conductivity |
| title_full_unstemmed | Development of Electromagnetic-Wave-Shielding Polyvinylidene Fluoride–Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene–Carbon Nanotube Composites by Improving Impedance Matching and Conductivity |
| title_short | Development of Electromagnetic-Wave-Shielding Polyvinylidene Fluoride–Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene–Carbon Nanotube Composites by Improving Impedance Matching and Conductivity |
| title_sort | development of electromagnetic wave shielding polyvinylidene fluoride ti sub 3 sub c sub 2 sub t sub x sub mxene carbon nanotube composites by improving impedance matching and conductivity |
| topic | electromagnetic interference shielding segregated structure polyvinylidene fluoride MXene single-walled carbon nanotubes |
| url | https://www.mdpi.com/2079-4991/13/3/417 |
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