Millimeter-scale permeable polyethylene/graphene composite for 5G electromagnetic shielding

However, current shielding materials generally focus on reflection. To address this breakthrough in EMI shielding materials, researchers published a paper titled “Millimeter-Scale Percolated Polyethylene/Graphene Composites for 5G Electromagnetic Shielding” in the journal ACS Appl. Nano Mater. High-density polyethylene (HDPE)/multilayer graphene composite millimeter (mm)-scale permeable structure for K-band electromagnetic shielding applications.

The HDPE/multilayer graphene (MLG) composites with millimeter-scale percolation structure exhibited excellent electrical and thermal conductivity and exhibited an absorption-dominated electromagnetic shielding effect. In particular, the best-optimized EMI shielding efficiency of the composite at 26GHz is 71.25dB, and it exhibits an excellent absorption-dominated shielding mechanism with an absorption coefficient of 0.78. The millimeter-scale percolation structure shows that by optimizing the multiple reflection phases of the millimeter-scale HDPE particles, it works efficiently in the K-band rather than the X-band.