期刊
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
卷 161, 期 -, 页码 150-160出版社
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/j.jmst.2023.01.019
关键词
Electromagnetic interference shielding; effectiveness; Thermal management; Thin films; Metal-matrix composites
In this study, an ultra-thin, flexible, and porous Cu/PLLA fibrous membrane was developed with excellent breathability and high electrical conductivity. The membrane showed fast electrical heating characteristics and effective thermal conductivity for thermal management, as well as enhanced electromagnetic interference shielding effectiveness. It has great potential for future portable electronic devices and wearable integrated garments.
Electromagnetic interference shielding and thermal management by wearable devices show great poten-tial in emerging digital healthcare. Conventional metal films implementing the functions must sacrifice either flexibility or permeability, which is far from optimal in practical applications. In this work, an ultra-thin (15 mu m), flexible, and porous Cu/PLLA fibrous membrane is developed by depositing copper particles on the polymer substrate. With novel acetone & heat treatment procedure, the membrane is considerably stronger while maintaining the porous fibre structure. Its fantastic breathability and super high electrical conductivity (9471.8130 S/cm) enable the composites to have fast electrical heating char-acteristics and excellent thermal conductivity for effective thermal management. Meanwhile, the porous polymer substrate structure greatly enhances the diffusion of conductive substances and increases the electromagnetic interference shielding effectiveness of the membranes (7797.98 dB cm2/g at the H band and 8072.73 dB cm2/g at the Ku band respectively). The composites present high flexibility, breathability, and strength with the functions of thermal management and electromagnetic shielding, showing great potential for future portable electronic devices and wearable integrated garments. (c) 2023 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据