Design and Characterization of Electrical Connections for Conductive Yarns

• Published in: 东华大学学报（英文版） Vol. 38; no. 4; pp. 304 - 309
• Main Authors: SI Mengzhen, WANG Xi, LI Qiao
• Format: Journal Article
• Language: English
• Published: College of Information Science and Technology,Donghua University,Shanghai 201620,China 31.08.2021; College of Textiles,Donghua University,Shanghai 201620,China%Engineering Research Center of Digitized Textile&Apparel Technology,Ministry of Education,Donghua University,Shanghai 201620,China; Key Laboratory of Textile Science&Technology,Ministry of Education,Donghua University,Shanghai 201620,China
• Subjects: encapsulation; electrical connection; conductive silver adhesive; conductive yarn; stretchability
• ISSN: 1672-5220
• DOI: 10.19884/j.1672-5220.202103006

TS101; The development of flexible and stretchable electronics has attracted much attention.As an important part of wearable electronic systems,the connection between conductive yarns and electronic components affects the stability and accuracy of their electrical reliability.In this paper,three different connections were attempted to electrically and mechanically link two conductive yarns,including soldering followed by waterborne polyurethane(WPU)encapsulation,coating of conductive silver adhesive with WPU encapsulation,as well as coating of conductive silver adhesive with polydimethylsiloxane(PDMS)encapsulation.The surface morphologies and electro-mechanical behaviors of the three created connected conductive yarns were characterized.Compared with their electro-mechanical behaviors of the established three connections,the connection with soldering remained electrically conductive to around 200％,which mainly came from the stress concentration between the stiff soldering and soft conductive yarns.However,the coating of conductive silver adhesive and encapsulated protection of PDMS can make the connected conductive yarns stretchable up to 300％with almost constant electrical resistance.