Layered Structural PBAT Composite Foams for Efficient Electromagnetic Interference Shielding  

作　　者：Jianming Yang Hu Wang Yali Zhang Hexin Zhang Junwei Gu 

机构地区：[1]School of Chemistry and Chemical Engineering,Anhui University of Technology,Ma’anshan,Anhui 243032,People’s Republic of China [2]Shaanxi Key Laboratory of Macromolecular Science and Technology,School of Chemistry and Chemical Engineering,Northwestern Polytechnical University,Xi’an 710072,Shaanxi,People’s Republic of China [3]School of Materials Science and Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,Jiangsu,People’s Republic of China

出　　处：《Nano-Micro Letters》2024年第2期273-286,共14页纳微快报（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(No.U21A2093);the Anhui Provincial Natural Science Foundation(No.2308085QE146);the National Natural Science Foundation of Jiangsu Province(No.BK20210894).

摘　　要：The utilization of eco-friendly,lightweight,high-efficiency and high-absorbing electromagnetic interference(EMI)shielding composites is imperative in light of the worldwide promotion of sustainable manufacturing.In this work,magnetic poly(butyleneadipate-coterephthalate)(PBAT)microspheres were firstly synthesized via phase separation method,then PBAT composite foams with layered structure was constructed through the supercritical carbon dioxide foaming and scraping techniques.The merits of integrating ferroferric oxideloaded multi-walled carbon nanotubes(Fe3O4@MWCNTs)nanoparticles,a microcellular framework,and a highly conductive silver layer have been judiciously orchestrated within this distinctive layered configuration.Microwaves are consumed throughout the process of“absorption-reflection-reabsorption”as much as possible,which greatly declines the secondary radiation pollution.The biodegradable PBAT composite foams achieved an EMI shielding effectiveness of up to 68 dB and an absorptivity of 77%,and authenticated favorable stabilization after the tape adhesion experiment.

关 键 词：Electromagnetic interference shielding Layered structure Supercritical carbon dioxide foaming Poly(butyleneadipateco-terephthalate) MICROCELLULAR 

分 类 号：TB332[一般工业技术—材料科学与工程]