 A layered segregated shielding network was organized in porous PBAT-slash-Fe304 at MWCNT-slash-AG composite by SECO2 foaming and scraping techniques, achieving an electromagnetic interference, EMI, shielding effectiveness of up to 68.0 backslash-XA0DB and a reflectivity of as low as 23% due to the absorption-reflection-reabsorption shielding mechanism. The solid and foamed PBAT-slash-Fe304 at MWCNT-slash-AG composites displayed superior retention, backslash-U200992% of EMISE even after peeling experiment of 500 times under 100 backslash-XA0G weight pressure. This article was authored by Jamming Young, Huang, Yali Zhang, and others.