INVESTIGATION OF ELECTROMAGNETIC SHIELDING AND COMFORT PROPERTIES OF SINGLE JERSEY FABRICS KNITTED FROM HYBRID YARNS CONTAINING METAL WIRE

The aim of this study is to investigate electromagnetic shielding and comfort properties of single jersey fabrics produced from hybrid yarns containing metal wire. For this purpose, nine different hybrid yarns were produced from the combination of cotton yarns (Ne 50, Ne 60, and Ne 70) and stainless steel (SS) wires (18 micron, 35 micron, and 50 micron) by means of hollow spindle covering system. Hybrid yarns and 100 % cotton yarns used in the production of hybrid yarns were used to produce knitted fabric on the sample circular knitting machine. When the shielding effectiveness (SE) values of the sample fabrics were examined, it was found that the SE value of knitted fabrics containing SS wire were higher than that of without SS wires. It was also found that as the SS wire thickness of knitted fabric increases, thermal conductivity and thermal absorptivity values increase, but air permeability and vertical wicking values decrease.

___

  • 1. Lai, K., Sun, R.-J., Chen, M.-Y., Wu, H., Zha, A.-X., 2007, Electromagnetic Shielding Effectiveness of Fabrics with Metallized Polyester Filaments, Textile Research Journal, 77 (4), 242-246.
  • 2. Kılıç, B., 2010, “Elektromanyetik Test Altyapıları ve Montaj Yöntemleri”, UAKAE Dergisi, Mayıs-Ağustos, pp: 49-58.
  • 3. Türkoğlu, Y., 2010, Investigation of Electromagnetic Shielding Effectivenes and Comfort Properties of Single Jersey Fabrics Knitted from Composite Yarns Containing Metal Wire (Unpublished master’s thesis), Erciyes University, Kayseri, Turkey.
  • 4. Cheng, K. B., Cheng, T. W., Lee, K. C., Ueng, T. H., Hsing, W. H., 2003, “ Effects of Yarn Constitutions and Fabric Specifications on Electrical Properties of Hybrid Woven Fabrics ”, Composites Part A: Applied Science and Manufacturing, Vol: 34, pp: 971-978.
  • 5. Chen, H. C., Lee, K. C., Lin, J. H., 2004, “Electromagnetic and Electrostatic Shielding Properties of Co-Weaving-Knitting Fabrics Reinforced Composites”, Composites Part A: applied science and manufacturing, vol: 35, pp: 1249-1256.
  • 6. Ueng, T. H., Cheng, K. B., 2001, “Friction Core-Spun Yarns for Electrical Properties of Woven Fabrics”, Composites Part A: Applied Science and Manufacturing, Vol: 32, pp: 1491-1496.
  • 7. Ortlek, H.G., Kilic, G., Yolacan, G., Tutak, M., 2010, Color and Whiteness Properties of Fabrics Knitted from Different Hybrid Core-Spun Yarns Containing Metal Wire, Fibers and Polymers, vol.11, No.7, 1067-1074.
  • 8. ASTM D4935-99, Standard Test Method for Measuring the Electromagnetic Shielding Effectiveness of Planar Materials, ASTM, June 1999.
  • 9. ASTM D1777–96 (2007) Standard Test Method for Thickness of Textile Materials.
  • 10. ASTM D3776/D3776M - 09a Standard Test Methods for Mass Per Unit Area (Weight) of Fabric.
  • 11. ASTM D737–04 (2008) e1 Standard Test Method for Air Permeability of Textile Fabrics.
  • 12. DIN 53924 (1978) Determination of the rate of absorption of water by textile materials (height of rise method). 13. Wong, K.K., Tao, X. M., Yuen, C. W. M., Yeung, K. W., 2001, “Wicking Properties of Linen Treated with Low Temperature Plasma”, Textile Research Journal, vol: 71(1), pp: 49-56.