摘要
The 3D printing technique combined with electrostatic interaction fabrication approach effectively prevented the agglomeration of magnetic particles. • The MMN architectures can be printed on various substrates. • The MMN architectures show the layer tunable EMI shielding effectiveness. With the proliferation of diverse electronic devices, achieving effective electromagnetic interference shielding for equipment with complex geometries has become increasingly challenging. Conventional manufacturing processes for EMI shielding materials are often constrained by mold-dependent fabrication, which limits structural flexibility. In contrast, 3D printing offers a mold-free approach that enables the fabrication of customized architectures. However, the feasibility of 3D printing technology depends on the rheological properties of ink, which makes it difficult for magnetic particles that are easy to agglomerate to be directly used to prepare printable ink. Herein, the FeCoNi-LDH/MXene/nanocellulose architectures with customizable structures were fabricated using the 3D printing combined with electrostatic interaction strategy. MMN architectures can be printed on various substrates, and simple or complex shapes can be readily achieved through computer-aided design. The electrostatic interaction post-treatment prevented agglomeration of magnetic particles in the ink. By adjusting the number of printed layers, the average EMI shielding effectiveness of the MMN architectures can be tailored from 56.9 dB (1.8 mm) to 64.7 dB (4.1 mm) in the X band. Additionally, the absorption effectiveness (SE A /SE T ) ratio can be improved from 85.6% to 89.7%. The features position the 3D-printed MMN architectures as promising candidates for next-generation, customizable, and high-performance EMI shielding applications. Download: Download high-res image (187KB) Download: Download full-size image
危险品化学品经营许可证（带存储）