Study the Electrical Properties of Surface Mount Device Integrated Silver Coated Vectran Yarn

Area of Science:

• Materials Science
• Electrical Engineering
• Textile Engineering

Background:

• Smart textiles integrate electronic components into fabrics for enhanced functionality.
• Current methods for integrating Surface Mounted Electronic Devices (SMD) into conductive yarns face challenges like short-circuit vulnerability.
• Limited research exists on the electro-mechanical characterization of SMD-integrated smart yarns.

Purpose of the Study:

• To investigate the effects of external factors on the electrical resistance of SMD-integrated silver-coated Vectran (SCV) E-yarn.
• To determine optimal construction methods for robust smart textile yarns.
• To evaluate the potential of SCV E-yarns for wearable conductive tracks and sensors.

Main Methods:

• Fabrication of a Vectran E-yarn by integrating an SMD resistor into a silver-coated Vectran yarn using vapor phase reflow soldering.
• Systematic testing of the E-yarn's electrical resistance under varying conditions: strain, solder pad size, temperature, abrasion, and washing.
• Characterization of the electro-mechanical properties of the developed E-yarn.

Main Results:

• Electrical resistance of the SCV E-yarn is significantly influenced by conductive gauge length, strain, solder pad size, temperature, abrasion, and washing.
• An E-yarn constructed with SCV conductive thread and a 68 Ω SMD resistor exhibited maximum electrical resistance (72.16 Ω) and power (0.29 W) per 0.31 m length.
• The study identified key factors affecting the reliability and performance of integrated electronic yarns.

Conclusions:

• The developed SCV E-yarn demonstrates a significant relationship between its electrical properties and various external environmental and mechanical stresses.
• The fabrication method and characterization provide valuable insights for designing durable and functional smart textiles.
• This research offers a promising foundation for the manufacturing of advanced wearable conductive tracks and sensors.