双螺旋结构羊毛纱线人工肌肉构建及湿响应智能纺织品应用

Design of wool yarn artificial muscles of double-helix structure and application of moisture-sensing smart textiles

为解决纤维基人工肌肉在智能纺织品实际应用中的障碍,针对目前纤维基人工肌肉存在刺激条件苛刻、化学毒性、材料和制备成本高等问题,探讨具有良好亲肤性的羊毛纱线人工肌肉的纺制、性能及应用。通过对天然羊毛纤维加捻,将加捻后的纤维对折形成自平衡的双螺旋结构,然后采用氧等离子体进一步清洁和激活双螺旋结构表面,并进一步制备机织物人工肌肉驱动器。通过扫描电镜、拉伸强力测试仪、高速摄像机等表征分析手段,探讨羊毛纱线人工肌肉的致动性能与影响因素。结果显示:氧等离子体刻蚀后的羊毛纱线人工肌肉具有对干湿状态的快速响应和可逆的扭转变形,其扭转角度可达373(°)/cm;且展现出优异的循环驱动性能,织物驱动器在水雾刺激下具有良好的二维卷曲致动性能,为湿响应智能纺织品的开发提供了新的策略。

At present,there are some problems with fiber-based artifical mucles,such as harsh stimulation conditions,chemical toxicity,and high cost,To remove the barriers of their application in intelligent textiles,was investigated the fabrication,performance and application of a kind of skin-friendly woolen yarn artificial muscles.The natural wools are twisted and folded a to form a self-balanced double-helical structure.Oxygen plasma was used to clean and activate the wool surface.The as-prepared woolen yarn artificial muscles were further fabricated into woven fabric muscle actuators.By using the scan electric microscope,tensile tester and high-speed camera,the actuation performance and affecting factors were discussed.The results show that the rapid response to dry and wet state and reversible torsion deformation are realized,and the rotation degree of the woolen yarn artificial muscles can reach 373(°)/cm with good cyclic performance.Fabric actuators show good curling performance under the stimulation of water fog,providing a new strategy for the application of moisture-sensing smart textiles.