A Study on Highly Effective Electromagnetic Wave Shield Textile Shell Fabrics Made of Point Polyester/Metallic...

Area of Science:

• Materials Science
• Textile Engineering
• Nanotechnology

Background:

• Development of advanced functional textiles is crucial for innovative applications.
• Core-spun yarns offer unique properties by combining different fiber types.
• Investigating the relationship between yarn structure and fabric performance is essential.

Purpose of the Study:

• To develop novel functional woven fabrics using germanium (Ge) and stainless steel (SS) core-spun yarns.
• To analyze the mechanical properties, negative ion release, electromagnetic interference shielding effectiveness (EMI SE), and air permeability of these fabrics.
• To determine the optimal yarn twist per inch (TPI) for enhanced fabric functionality.

Main Methods:

• Core-spun yarns were fabricated by wrapping Ge fibers around SS filaments.
• Yarns were twisted at varying TPIs (8-12) and tested for tensile strength and elongation.
• Functional woven fabrics were produced using Ge/SS core-spun yarns (weft) and polyester (PET) yarns (warp).
• Fabric properties including tensile strength, elongation, negative ion release, EMI SE, and air permeability were evaluated.

Main Results:

• Yarn mechanical properties improved with increasing TPI, with maximum strength at 12 TPI (5.26 N).
• Fabrics woven with 12 TPI yarns showed maximum tensile strength (153.6 N) and optimal elongation (10.08%).
• Fabrics using 8 or 9 TPI yarns achieved optimal EMI SE (41 dB), air permeability (212 cm³/cm²/s), and negative ion release (550-600 ions/cc).

Conclusions:

• The TPI significantly influences the mechanical and functional properties of Ge/SS core-spun yarns and their resulting woven fabrics.
• Optimal fabric performance, balancing mechanical strength with shielding and breathability, can be achieved by selecting appropriate TPI.
• These functional woven fabrics demonstrate potential for applications in smart garments and advanced bedding.