Comparative analysis on the electrothermal properties of several electro conductive yarns
o compare the electrothermal properties of electro conductive yarns,6 different yarns are selected,the resistance at room temperature,resistance in energized,maximum load current,heating performance are tested and analyzed.The results suggest that the electric resistance of 6 different yarns varies greatly,and the resistance has a significant linear relationship with the length,but the correlation coefficient is different.The resistance increases and the resistance change rate of the conductive yarn increases rapidly when energized;With the increase of the voltage,the resistance change rate of the yarn shows a different change trend.The maximum load current and the heating power of carbon fiber,cotton/copper magnesium alloy and cotton/copper sirofil composite yarn are relatively high.At a voltage of 3 V,the six types of conductive yarns generate uniform heat,but there is a significant difference in surface temperature.