Electromagnetic interference (EMI) is a new kind of environmental pollution that recently, with the rapid growth of using electrical and electronic devices have been increased. EMI consists of any unwanted emitted electromagnetic wave, which can cause harmful disturbance of system performance. There are three main mechanisms for control this EM pollution, which is consisting of surface reflection, absorption, and multiple reflections of the EM wave. Among them, absorption is the best mechanism for shielding the EM wave, and using microwave absorption curtains is a great technique to prevent EMI. In this research, the fabrication procedure for a high-performance EMI shielding curtain is proposed. Therefore, modified woven polyester (PET) fabric with good electrical conductivity and appropriate EMI shielding properties was introduced using three methods. First uses copper (Cu) wires as the core and PET fibers as the wrap material to form the Cu/PET wrapped yarns and then made into different woven fabrics. Second woven PET fabrics produced by a knife coating method and using carbon black (CB) with different thicknesses. Third, the aluminum-coated woven PET fabrics produced by thermal vacuum evaporation procedure with two different thicknesses. The surface morphology, elemental analysis, chemical structure, microstructural properties, and EMI shielding of the manufactured fabrics were characterized by FESEM, EDX, Raman, XRD, and vector network analyzer in the range of 8–12 GHz, respectively. The results showed that in the first method, denser textures with a higher presence of Cu wire in the warp and weft could increase the shielding of curtain fabric. The average protection value of 30 dB was obtained by reflecting the waves. In the second method, a uniform and porous carbon layer were formed by knife coating the carbon black on the curtain fabric. In this method, without damaging the structure of the carbon plates and by reducing the crystallinity in the thickness of 1.5 mm, the carbon layer can be obtained by absorbing 13 dB. The third method showed that the high thicknesses of aluminum-coated woven PET fabric partially degraded the fabric surface structure and could not create aluminum metal crystals on the fabric surface. However, this method can be achieved 11 dB of protection by reflecting the waves. The fabrics developed in this study have benefits in being textile properties and having effective EMI shielding performance and can be the appropriate candidates for a broad range of EMI shielding curtains.
