PVDF-PPY-based quaternary flexible composite film for electromagnetic interference shielding characteristics

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-09-14 DOI:10.1016/j.mseb.2025.118790

Amar Dev , Piyali Biswas , Tupan Das , Ankita Chakraborty , Priyanka Verma , Deepa Seetharaman , P. Kour , S.K. Pradhan , Pawan Kumar , Manoranjan Kar

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Abstract

The growing use of electronic communication systems has intensified electromagnetic pollution, driving the development of advanced EMI shielding materials. In this work, a novel quaternary polymer–ceramic nanocomposite was synthesized via a simple solvent casting method to create a thin, lightweight, and flexible EMI shielding film. Rietveld refinement confirmed the formation of single-phase nanomaterials. Mechanical tests showed high strength and flexibility. The dielectric constant increased with PPy (polypyrrole) content, enhancing electromagnetic radiation absorption. The composite with 16 wt% PPy achieved a maximum shielding effectiveness of 21.87 dB, with 16.73 dB from absorption and 5.13 dB from reflection. A high specific shielding effectiveness of 2858 dB·g⁻¹·cm² was also recorded, surpassing many previously reported systems. These properties make the material highly suitable for use in flexible electronics, EMI shielding components, and advanced engineering fields like aerospace and automotive, where lightweight and effective shielding is crucial.

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pvdf - pp基四元柔性复合薄膜具有屏蔽电磁干扰的特性

电子通信系统的日益普及加剧了电磁污染，推动了先进电磁干扰屏蔽材料的发展。在这项工作中，通过简单的溶剂铸造方法合成了一种新型的四元聚合物-陶瓷纳米复合材料，以制备薄、轻、柔性的电磁干扰屏蔽膜。Rietveld细化证实了单相纳米材料的形成。力学试验表明其具有较高的强度和柔韧性。介电常数随PPy（聚吡咯）含量的增加而增加，增强了电磁辐射的吸收。该复合材料的最大屏蔽效率为21.87 dB，其中吸收屏蔽效率为16.73 dB，反射屏蔽效率为5.13 dB。还记录了2858 dB·g−1·cm2的高比屏蔽效能，超过了许多先前报道的系统。这些特性使该材料非常适合用于柔性电子产品、EMI屏蔽元件以及航空航天和汽车等先进工程领域，在这些领域，轻质和有效的屏蔽至关重要。

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.