Table 2.
EMI shielding properties of different composite materials.
| Matrix | Type of Filler Material | Filler wt% | Thickness of Sample | Frequency Range | Shielding Effectiveness (dB) | Ref. |
|---|---|---|---|---|---|---|
| Polyaniline (PANI) | Graphene and MWCNTs | 5–10 | 2.5 mm | 12.4–18 GHz | 98 | [39] |
| Wax | PANI/Fe3O4 and MWCNTs | 20 | 4 mm | 2–18 GHz | 16 | [40] |
| Mesocarbon microbead | MWCNTs | 10–25 | 0.15–0.6 | 8.2–12.4 GHz | 31–56 | [41] |
| Epoxy resin | MWNCTs | 4.2–20.4 | 0.35–1.75 mm | 19–60 | [42] | |
| PANI:DBSA (dodecylbenzenesulfonic acid) mixed with divinyl benzene (DVB) | - | 1.8 | 8.2–12.4 GHz | 13 | [43] | |
| Polyvinyl butyral | Graphite/graphitized carbon black/Fe2O3 | 50/17/17 | 0.06 mm | 0.3–4 GHz | 9.1–17.8 | [44] |
| PANI doped with poly (styrene sulfonic acid) (PSS) or HCl or HBr and Poly(3,4-ethylenedioxythiophene) (PEDOT) doped with PSS | Graphene | 6–18 | 0.5 mm | 3.4–6 GHz | 60 | [45] |
| Epoxy resin | Fe3O4 and functionalized Graphenes | 2.5–10 | 0.1 mm | 10.5–12.5 GhZ | 4.5 | This work |