Preparation evaluation of copper wire/spandex coated yarn for temperature sensing electronic yarn signal transmission line and its application performances
Firstly,a high elasticity copper wire/spandex coated yarn is developed using a hollow spindle spinning,and the optimum coating process is discussed to achieve excellent tensile recovery performance;Then,the temperature sensing electronic yarn is prepared by using copper wire/spandex coated signal transmission line,and the application performance of stretchable temperature sensing electronic yarn is comprehensively evaluated through washing tests and sensing performance tests.The study shows that the copper/spandex coated signal transmission line with a draft ratio of 2.6 and a coverage of 24 twists/cm has excellent tensile properties;the stretchable temperature sensing electronic yarn prepared with 24 twists/cm signal transmission line has excellent sensing performance with a resistance temperature coefficient of(-3.357±0.048)％/℃,sensitivity of(-268.709±3.654)Ω/℃,hysteresis error of(1.827±0.319)％,response time of less than 6 s,and can withstand 30 standard machine washes.
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