Robust, transparent, and conductive AgNW/MXene composite polyurethane self-healing film for electromagnetic interference shielding. Issue 45 (7th November 2022)

• Record Type: Journal Article
• Authors: Wang, Zhuochao; Wang, Peng; Cao, Wenxin; Sun, Chunqiang; Song, Zicheng; Ji, Dongchao; Yang, Lei; Han, Jiecai; Zhu, Jiaqi
• Is Part Of: Journal of materials chemistry. Volume 10:Issue 45(2022)
• Page Start: 17066
• Page End: 17074
• Publication Date: 2022-11-07
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d2tc03822f
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : This work reported a robust, transparent, and conductive AgNW/MXene composite polyurethane self-healing film, which exhibited ultra-low sheet resistance, high transmittance and good EMI shielding effectiveness. Abstract : Electromagnetic interference (EMI) pollution poses risks to electronic devices and human health and has emerged as a major source of pollution. In addition to being low in weight and exhibiting high transparency, flexibility, and easy processability, the polymer-based transparent conductive films (TCFs) increasingly used for EMI shielding exhibit fragility, and scratches in TCFs during service usually cause severe electromagnetic wave leakage and waste. To address this issue, we designed a DMBA-modified oxime-carbamate polyurethane film with remarkable mechanical strength, high transmittance, and self-healing efficiency and prepared TCFs by uniformly depositing AgNWs and Ti3 C2 T x MXene on the material surface. The TCFs show an ultra-low sheet resistance (18 Ω sq −1 ), high transmittance (82.8%), good EMI shielding effectiveness (SE, 27.1 dB), and excellent retention of properties after 1000 flexures and rapid recovery after three cutoff/self-repair cycles, demonstrating resistance against damage. The novel TCFs exhibit great potential for application in consumer electronics, radio communications, and radar stealth.