Conductive and sensing properties of polypyrrole composite cotton/spandex core yarn
In order to improve the conductivity and sensing performance of yarn sensors,yarns with different fineness are polymerized under different pre-extension to study the effects of the structure and preparation process of the yarn,and the fineness,resistance,SEM photos and sensing sensitivity,stability and repeatability of the yarn before and after polymerization are tested.The results show that polymerization on spandex filament with a pre elongation of 50％can form polypyrrole with a wrinkled structure,which is beneficial for reducing resistance,but the sensitivity is highest when the pre elongation is 10％;The change of resistance during stretching mainly comes from the increase in resistance of spandex filament;The sensitivity of 70 s/40 D cotton/spandex yarn with a pre elongation of 10％is the highest,at 0.225;After 100 repeated stretches,the resistance remains relatively stable;Yarn has good sensitivity,responsiveness and sensing stability for finger bending motion.It is expected to be applied to intelligent clothing for human sports health monitoring.
万方数据
维普
