In this article, the silver-plated polyamide fabrics (SPPAFs) with high electroconductibility and shielding effectiveness were fabricated by using
in situ reduction of polydopamine and chemical silvering. The effects of SPPAFs dopamine (C
8H
11O
2N) and silver nitrate (AgNO
3) concentration on surface resistivity and electromagnetic interference shielding effectiveness were studied. The results showed that the surface resistivity of SPPAFs can reach a minimum value of 0.06 ± 0.014 Ω cm
−1, when C
8H
11O
2N concentration is 4 g L
−1 and the AgNO
3 concentration is 120 g L
−1. The shielding effectiveness of SPPAFs in the wide frequency range of 10–3000 MHz increases with the increase in the concentration of AgNO
3, and increases first and stabilizes afterward with increasing C
8H
11O
2N concentration. When the concentration of C
8H
11O
2N and AgNO
3 is 3 and 120 g L
−1, respectively, mean shielding effectiveness values in the low-, medium-, and high-frequency bands are 71.3, 73.8, and 76.1 dB, respectively. Moreover, the mean shielding effectiveness values is 83.79 dB in the frequency range of 1.2–2.3 GHz. The dominant shielding mechanism of SPPAFs is the reflected electromagnetic waves and the absorption shielding effectiveness is less than 2 dB. The average electromagnetic shielding values of SPPAFs are above 67 dB after 16 weeks of storage, when C
8H
11O
2N concentration is 4 g L
−1 and the AgNO
3 concentration is 80 and 100 g L
−1. The prepared SPPAFs show promising applications in military textiles and smart wearable clothing. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 ,
136, 48227.
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