Sandwich-Structured Free-Standing Films with Excellent Flame Retardant Performance and Effective Electromagnetic Interference (EMI) Shielding Capability

IF 2.2 4区工程技术 Q1 MATERIALS SCIENCE, TEXTILES

Fibers and Polymers Pub Date : 2024-12-21 DOI:10.1007/s12221-024-00818-8

Jiangxiao Song, Zongchun Gao, Ziqing Jiang, Yan Zhang, Guangyong Zheng, Yihao Yu, Dongming Qi, Jianming Wang, Shimin Zhai

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引用次数: 0

Abstract

EMI shielding films are increasingly in demand for wireless networks, wearable electronics, and navigation control systems. Given the flammability of polymers and their prolonged high power operation, it is imperative to consider the environmental and human health impact arising from fire incidents during usage. Consequently, there is a strong need to develop easily manageable and highly scalable flame-retardant EMI shielding films. Herein, we present a viable approach for fabricating a series of flexible and flame-retardant films with a sandwich structure that offers adjustable EMI shielding performance. This approach involves coating plating silver nanowires (AgNWs) assisted by polydopamine (PDA) on a commercially available nylon mesh (PA6 mesh), followed by applying a flame-retardant polyvinyl alcohol/guanidine phosphate (PVA/GP) coating. When sprayed coating 0.6 mg/cm² AgNWs, the films exhibit an EMI shielding effectiveness (SE_T) up to 55.11 dB, capable of blocking 99.999% of EM waves. Besides, such film possesses remarkable self-extinguishing property and a high thermal diffusion coefficient of 3.54 mm²/s. Therefore, the highly lightweight sandwich film holds great promise for multifunctional applications in EMI shielding on a large scale.

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来源期刊

Fibers and Polymers 工程技术-材料科学：纺织

CiteScore

3.90

自引率

8.00%

发文量

267

审稿时长

3.9 months

期刊介绍： -Chemistry of Fiber Materials, Polymer Reactions and Synthesis- Physical Properties of Fibers, Polymer Blends and Composites- Fiber Spinning and Textile Processing, Polymer Physics, Morphology- Colorants and Dyeing, Polymer Analysis and Characterization- Chemical Aftertreatment of Textiles, Polymer Processing and Rheology- Textile and Apparel Science, Functional Polymers