经编导电针织物的应变-电阻传感性能

摘要

为探讨经编导电织物的应变-电阻传感性能,将镀银锦纶与氨纶或涤纶在特里科经编机上采用两梳交织,制备了具有不同组织结构的4种经编导电织物,测试了4种织物在拉伸条件下的电阻变化,得到经编导电织物的电阻随应变的变化规律,分析了组织结构以及氨纶弹性对经编针织柔性导电织物的应变-电阻传感性能的影响.结果表明:所选镀银锦纶导电纤维具有良好的可编织性;非弹性经编导电织物的电阻随应变的增加呈现先减小,再趋于平稳,最后略有上升的趋势;非弹性经编导电织物随着镀银纱线延展线长度的增加,造成小应变下的灵敏度增加;弹性经编导电织物呈现出电阻随应变的增加先增加再减少最终趋于平稳的趋势.%In order to investigate the strain-resistance sensing performance of warp-knitted conductive fabrics silver-plated nylon and spandex or polyester were used to knit four different fabric structure samples on the tricot warp knitting machine. These four samples were characterized by varied knit structures and elasticity. The change in resistance in the four of fabric samples under tensile condition had been recorded. Analyses of the influence of the microstructure and elasticity proffered by spandex content on the strain-resistance sensing properties had been analyzed. The results show that the silver-plated nylon conductive yarns employed possess good knittability. The resistance of the inelastic warp-knitted fabric decreases with the application of strain. The piezoresistive response shows an initial declining in resistance,following by a smooth momentum and then accompaning by an upward transition. The sensitivity increases under small strain. Conversely, the resistance of the elastic warp-knitted conductive fabric increases with the increase of strain at the beginning and then tends to stabilize midway and then reduce in the final phase.