Multifunctional Polysulfonamide/AgNWs aerogel for electromagnetic interference shielding

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2025-03-19 DOI:10.1016/j.coco.2025.102346

Junyi Wang , Qian Zhang , Shuo Zhang , Runzheng Liu , Yin Zhang , Yinming Wang , Jinfa Ming

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引用次数: 0

Abstract

Electromagnetic interference (EMI) shielding materials are crucial for high-end electronic products, requiring lightweight, low density, and excellent shielding performance, especially in extreme conditions. In our work, polysulfonamide/silver nanowires (PSA/AgNWs) aerogels with different AgNWs contents and thickness are fabricated. The resultant aerogels show AgNWs with 50–90 nm length are distributed evenly inside the aerogel, and it does not destroy the original 3D network structure of aerogel, maintaining excellent compressive properties (11.2912 kPa), chemical corrosion resistance, heat insulation property (36.47 mW/m·K), and self-cleaning property. PSA/AgNWs-0.5 aerogel with 0.0123 g/cm³ density and 15 mm thickness owns excellent EMI shielding, and its SET value reaches 44.04 dB. When the thickness of PSA/AgNWs-0.5 aerogel is compressed to 5 mm, the SET and SSE values reach 90.78 dB and 7380.49 dB cm³/g. Even if PSA/AgNWs-0.5 aerogel is exposed to acid and alkali conditions, the fluctuation of SET value is little. The superior EMI shielding performance and stability in extreme environments of the resultant PSA/AgNWs aerogel suggests a promising application potential in advanced electronics products.

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电磁干扰（EMI）屏蔽材料对高端电子产品至关重要，要求轻质、低密度和优异的屏蔽性能，尤其是在极端条件下。在我们的研究中，制备出了不同AgNWs含量和厚度的聚磺酰胺/银纳米线（PSA/AgNWs）气凝胶。结果表明，长度为 50-90 nm 的 AgNWs 均匀地分布在气凝胶内部，并没有破坏气凝胶原有的三维网络结构，保持了良好的抗压性（11.2912 kPa）、耐化学腐蚀性、隔热性（36.47 mW/m-K）和自洁性。PSA/AgNWs-0.5 气凝胶的密度为 0.0123 g/cm3，厚度为 15 mm，具有优异的电磁干扰屏蔽性能，其 SET 值达到 44.04 dB。当 PSA/AgNWs-0.5 气凝胶的厚度压缩到 5 mm 时，其 SET 值和 SSE 值分别达到 90.78 dB 和 7380.49 dB cm3/g。即使 PSA/AgNWs-0.5 气凝胶暴露在酸碱条件下，SET 值的波动也很小。PSA/AgNWs 气凝胶优异的电磁干扰屏蔽性能和在极端环境中的稳定性表明，它在先进电子产品中具有广阔的应用前景。

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.