印刷参数和三周期极小表面对聚偏氟乙烯石墨烯纳米复合材料电磁屏蔽效率的影响

IF 10.3 1区工程技术 Q1 ENGINEERING, MANUFACTURING

Additive manufacturing Pub Date : 2024-09-05 DOI:10.1016/j.addma.2024.104544

Pooja Srinivas , Liya Jacob , C. Muhammed Shebeeb , Haider Butt , Imad Barsoum , Rashid K. Abu Al-Rub , Wael Zaki

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引用次数: 0

摘要

电磁干扰（EMI）屏蔽对于保护电子设备免受外部电磁信号的有害影响至关重要，是确保这些系统可靠性和功能性的关键因素。电磁干扰的来源多种多样，既可能造成暂时性中断，也可能导致灾难性的系统故障和潜在的有害后果。本研究深入探讨了使用材料挤压（ME）工艺制造的三维打印聚偏二氟乙烯（PVDF）-石墨烯三周期最小表面（TPMS）结构的电磁干扰屏蔽能力。对 TPMS 结构的关注源于其独特的几何配置，在增强 EMI 屏蔽效果方面具有广阔的潜力。研究人员探索了四种不同的 TPMS 拓扑结构--gyroid、Neovius、diamond 和 I-WP，每种拓扑结构都显示出不同程度的屏蔽效果。三维打印实体样品的平均特定屏蔽效能（SSE）为 13 dB cm3/g，Neovius 三周期最小表面（TPMS）结构的平均 SSE 为 94 dB cm3/g。固体样品和 Neovius TPMS 结构的绝对屏蔽效能（SSE/t）分别约为 66 dB cm2/g 和 62.5 dB cm2/g。在测试的样品中，采用 Neovius 拓扑结构的样品尤其具有发展前景，其 EMI 屏蔽效果很高，适合商业应用。此外，该研究还调查了几个设计和印刷参数对总屏蔽效能（SET）的影响，包括相对密度/填充百分比、印刷方向和单元尺寸。结果显示，SET 的变化范围在 25 dB 到 75 dB 之间，这表明通过调整这些参数来调整这些样品的 SET 是可行的。这项研究的发现强调了 SET 与频率之间受独特几何特性和频率依赖性相互作用影响的密切联系，凸显了结构化 PVDF 石墨烯 TPMS 结构在 EMI 屏蔽应用中的潜力。这为该领域的研究和开发开辟了新途径，为更先进、更有效的 EMI 屏蔽解决方案铺平了道路。

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Effect of printing parameters and triply periodic minimal surfaces on electromagnetic shielding efficiency of polyvinylidene fluoride graphene nanocomposites

Electromagnetic interference (EMI) shielding is vital in safeguarding electronic devices from the harmful effects of external electromagnetic signals, a critical factor in ensuring the reliability and functionality of these systems. EMI, originating from a myriad of sources, can range from causing temporary disruptions to catastrophic system failures and potentially harmful consequences. This study delves into the EMI shielding capabilities of 3D printed Polyvinylidene Fluoride (PVDF)-graphene Triply Periodic Minimal Surface (TPMS) structures, fabricated using Material Extrusion (ME) process. The focus on TPMS structures stems from their unique geometrical configurations, offering promising potentials in enhancing EMI shielding effectiveness. Four distinct TPMS topologies—gyroid, Neovius, diamond, and I-WP were explored, with each demonstrating varying degrees of shielding effectiveness. 3D printed solid samples showed an average specific shielding effectiveness (SSE) of 13 dB cm³/g, and Neovius triply periodic minimal surface (TPMS) structure exhibited an average SSE of 94 dB cm³/g. Absolute shielding effectiveness (SSE/t) for solid samples and Neovius TPMS structure is around 66 dB cm²/g and 62.5 dB cm²/g respectively. Among the tested samples, those with a Neovius topology emerged as particularly promising, exhibiting high EMI shielding effectiveness suitable for commercial applications. Furthermore, the study investigates the impact of several design and printing parameters, including relative density/infill percentage, print orientation, and the size of unit cells, on total shielding effectiveness (SE_T). Results revealed SE_T variations ranging between 25 dB and 75 dB, suggesting that tuning the SE_T of these samples is feasible by adjusting these parameters. The study's findings, highlighting a strong correlation between SE_T and frequency influenced by unique geometrical characteristics and frequency-dependent interactions, underscore the potential of architected PVDF-graphene TPMS structures in EMI shielding applications. This opens new avenues for research and development in this field, paving the way for more advanced and effective EMI shielding solutions.

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来源期刊

Additive manufacturing Materials Science-General Materials Science

CiteScore

19.80

自引率

12.70%

发文量

648

审稿时长

35 days

期刊介绍： Additive Manufacturing stands as a peer-reviewed journal dedicated to delivering high-quality research papers and reviews in the field of additive manufacturing, serving both academia and industry leaders. The journal's objective is to recognize the innovative essence of additive manufacturing and its diverse applications, providing a comprehensive overview of current developments and future prospects. The transformative potential of additive manufacturing technologies in product design and manufacturing is poised to disrupt traditional approaches. In response to this paradigm shift, a distinctive and comprehensive publication outlet was essential. Additive Manufacturing fulfills this need, offering a platform for engineers, materials scientists, and practitioners across academia and various industries to document and share innovations in these evolving technologies.