A TEXTILE FABRIC OF METAL-COATED FIBERS FOR ELECTROMAGNETIC SHIELDING AND A METHOD FOR PREPARING THE SAME

摘要

Textile fabric of metal-coated fibers having a far field shielding effectiveness SE for electromagnetic radiation at 10 GHz of at least 50 db, wherein the fabric has a thickness D and apertures characterized in that the dimensions of the largest visible aperture in the plane of the surface of the fabric has a maximum dimension L and a minimum dimension S and a surface resistivity ςs, the metal coating comprises from 1 to n layers of metal species and has a volume resistivity ςv determined as Σxiςi, where xi is the volume fraction of layer i in the metal coating and ςi is the volume resistivity of the metal species in layer i; and D, L, S, ςs and ςv are selected from the algorithm SE=e-12.9L [68.15 + 20(log¿10?(1-0.99961 e?-3.303a¿) + 13.160 a] + [(1-e-12.9L) (20 + 20 (log¿10?((1+1n(L/S))/L) + 30 D/L)], where a=ςv/ςs; D, L and S are in units of millimeters, ςs is in units of ohms/square and ςv is in units of ohms-mm.