Electromagnetic Shielding Effectiveness and Conductivity of PTFE/Ag/MWCNT Conductive Fabrics Using the Screen Printing Method

Hung-Chuan Cheng, Chong-Rong Chen, Shan-hui Hsu and Kuo-Bing Cheng
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Hung-Chuan Cheng: Institute of Polymer Science and Engineering, National Taiwan University, Taipei 106, Taiwan
Chong-Rong Chen: Department of Fiber and Composite Material, Feng Chia University, Taichung 407, Taiwan
Shan-hui Hsu: Institute of Polymer Science and Engineering, National Taiwan University, Taipei 106, Taiwan
Kuo-Bing Cheng: Department of Fiber and Composite Material, Feng Chia University, Taichung 407, Taiwan

Sustainability, 2020, vol. 12, issue 15, 1-12

Abstract: The management of the electromagnetic interference (EMI) of thin, light, and inexpensive materials is important for consumer electronics and human health. This paper describes the development of conductive films that contain a silver (Ag) flake powder and multiwall carbon nanotube (MWCNT) hybrid grid on a polytetrafluoroethylene (PTFE) film for applications that require electromagnetic shielding (EMS) and a conductive film. The Ag and MWCNT hybrid grid was constructed with a wire diameter and spacing of 0.5 mm. The results indicated that the proposed conductive films with 0.4 wt% MWCNTs had higher electromagnetic shielding effectiveness (EMSE) and electrical conductivity than those with other MWCNT loading amounts. The results also showed that the film with 0.4 wt% MWCNT loading had a high 62.4 dB EMSE in the 1800 MHz frequency and 1.81 × 10 4 S/cm electrical conductivity. This combination improved stretchability, with 10% elongation at a 29% resistivity change rate. Conductive films with Ag/MWCNT electronic printing or lamination technologies could be used for EMI shielding and electrically conductive applications.

Keywords: Ag/MWCNT; EMSE; laminated woven fabric; PTFE film; screen printing (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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