In this study, stainless steel, copper, and silver wires were intermingled with two polyamide 6.6 filaments through the
commingling technique to produce three-component hybrid yarns.
The produced hybrid yarns were used as weft in
the structure of plain woven fabric samples.
The electromagnetic shielding effectiveness parameters of samples were
measured in the frequency range of 0.8–5.2 GHz by the free space technique.
The effects of metal hybrid yarn placement,
number of fabric layers, metal types, and wave polarization on the electromagnetic shielding effectiveness and absorption
and reflection properties of the woven fabrics were analyzed statistically at low and high frequencies separately.
As a
result, the samples have no shielding property in the warp direction. Metal types show no statistically significant effect
on electromagnetic shielding effectiveness.
However, fabrics containing stainless steel have a higher absorption power
ratio than copper and silver samples.
Double-layer samples have higher electromagnetic shielding effectiveness values
than single-layer fabrics in both frequency ranges.
However, the number of layers does not have a significant effect on the
absorbed and reflected power in the range of 0.8–2.6 GHz.
There was a significant difference above 2.6 GHz frequency
for absorbed power ratio.
An increase in the density of hybrid yarns in the fabric structure leads to an increase in the
electromagnetic shielding effectiveness values.
Two-metal placement has a higher absorbed power than the full and onemetal
placements, respectively.
The samples which have double layers and including metal wire were in their all wefts
reached the maximum electromagnetic shielding effectiveness values for stainless steel (78.70 dB), copper (72.69 dB), and
silver composite (57.50 dB) fabrics.
