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<p>An increasing trend in textile and electronic waste generation, and the growing demand for waste recycling are being observed nowadays. Cost-effective methods, regarding to need for effective electromagnetic interference (EMI) shielding materials, solutions with that in mind are substantial. This study investigated the EMI shielding effectiveness of non-woven polypropylene (PP) matrix containing cut silver-coated nylon waste yarn. Two fabrication methods were employed: scattering the waste within the non-woven layers and scattering it only on top surface. Seven samples per method were produced, with waste yarn feeding percentages ranging from 10% to 20% of total PP fed fibers. Absorption shielding effectiveness (<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\hbox {SE}_\text {A}\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mtext>SE</mtext> <mtext>A</mtext> </msub> </math></EquationSource> </InlineEquation>) reached a maximum of 14.35 dB for OS and 14.13 dB for IS samples. Total shielding effectiveness (<InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(\hbox {SE}_\text {T}\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mtext>SE</mtext> <mtext>T</mtext> </msub> </math></EquationSource> </InlineEquation>) reached approximately 15 dB for both methods. The results confirmed the potential of repurposing electronic and conductive textile waste for a cost-effective EMI shielding.</p>

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A cost-effective and environmentally friendly non-woven structure for X-band EMI shielding using silver-coated waste yarn

  • 期刊论文

  • 发表日期：

    2025年12月20日

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  • Hamed Rezaei Adaryani,
  • Zahra Shahbaz,
  • Elaheh Fathi,
  • Keivan Naderi,
  • Gholamreza Askari,
  • Mohsen Shanbeh

摘要

An increasing trend in textile and electronic waste generation, and the growing demand for waste recycling are being observed nowadays. Cost-effective methods, regarding to need for effective electromagnetic interference (EMI) shielding materials, solutions with that in mind are substantial. This study investigated the EMI shielding effectiveness of non-woven polypropylene (PP) matrix containing cut silver-coated nylon waste yarn. Two fabrication methods were employed: scattering the waste within the non-woven layers and scattering it only on top surface. Seven samples per method were produced, with waste yarn feeding percentages ranging from 10% to 20% of total PP fed fibers. Absorption shielding effectiveness ( \(\hbox {SE}_\text {A}\) SE A ) reached a maximum of 14.35 dB for OS and 14.13 dB for IS samples. Total shielding effectiveness ( \(\hbox {SE}_\text {T}\) SE T ) reached approximately 15 dB for both methods. The results confirmed the potential of repurposing electronic and conductive textile waste for a cost-effective EMI shielding.