锑掺杂二氧化锡涂覆型导电纤维力电行为研究

Investigation on the electromechanical behavior of nano-antimony-doped-tin oxide coated fibers

导电纤维作为一种功能纤维，具有电阻“正效拉力系数”效应，利用这一特性可将其制成应力传感器，以实现对道路或桥梁等结构的在线监测，具有很好的应用前景。以锑掺杂二氧化锡（ATO）为导电成分，聚己内酰胺（PA6）纤维为基体纤维，制备了ATO/PA6涂覆型导电纤维，讨论了ATO/PA6导电纤维体积比电阻随拉伸应力的变化，并建立了数学模型，为进一步研究其力电行为奠定了基础。

In this paper, substantially transparent nano-antimony-doped Tin oxide （ATO） particles were used instead of carbon black as conductive particles. A novel dissolving-coating method is designed and antimony-doped tin oxide （ATO） coated polycaprolactam （PA6） fibers were prepared. The ATO coated PA6 fibers have lower volume resistance, lower modulus and plasticity, which could sense elastic and imelastic deformation.The tenso-resistive effects of ATO coated PA6 fibers were investigated and tenso-resistive model is derived that correlates the resistance change with applied strain. The experimental data for tensile strain is in good agreement with theoretical equations derived from model and the model provides a theoretical basis for the analysis and design of strain sensor.