Electromagnetic shielding material based on silver fibers and stainless steel fibers and preparation method thereof

The invention discloses an electromagnetic shielding material based on silver fibers and stainless steel fibers. The electromagnetic shielding material is woven from yarn, and with a unit yarn cross-sectional area as one part, the yarn is prepared from 25-65 parts of the stainless steel fibers, 5-10 parts of the silver fibers and 30-70 parts of auxiliary fibers. A preparation method of the electromagnetic shielding material comprises the steps that (1) the stainless steel fibers, the silver fibers and the auxiliary fibers are spun into the 16-40<s>/2 yarn through a siro spinning process; (2) the yarn is adopted as warp and weft and woven by utilizing a rapier or air-jet weaving method and adopting double-layer plain change weaves as a weave mechanism, wherein weaving is conducted in the manner that the inner weaves adopt one-up one-down right twill weaves and the surface weaves adopt one-up two-down right twill weaves. The electromagnetic shielding material can effectively shield electromagnetic waves, the electromagnetic shielding range is 150 MHz-200 GHz, and the warp and weft shielding effectiveness can be greater than or equal to 45 dB.