以Nafion膜为基体的聚合物人工肌肉的制备及性能研究

发布时间：2018-06-20 17:59

本文选题：离子聚合物金属复合材料 + 末端位移　；参考：《天津大学》2012年硕士论文

【摘要】：离子聚合物--金属复合材料(Ionic polymer—metal composites)是近年来被广泛研究的一种新型的智能材料,它在外加交变电场的作用下可以产生摆动响应。由于它具有驱动电压低、形变大、密度小,易于加工成人们需要的形状的诸多优势,因而被人们用来制造微型的人工机器人驱动器、传感器,以及具有哺乳动物肌肉相似性能的人工肌肉。本文以Nafion117膜和金属银为原料,用化学还原的方法制备了IPMC。在化学还原的过程中分别使用了葡萄糖、硼氢化钠和维生素C作为还原剂,对制得的IPMC进行形貌表征考察还原剂对IPMC电极的影响。针对电极层存在的缺陷使用了多种方法对表面的电极进行加工和修饰,以期望获得更好的电致动性能:在制备金属银电极的过程中引入聚乙烯吡咯烷酮(PVP)作为分散剂来抑制金属颗粒团聚制得致密的导电性较好的表层电极、增加电极的化学镀次数以增加电极厚度、在电极表层用离子溅射镀膜仪喷镀金电极薄层减少电极层中的缺陷以及对IPMC样品进行真空硅脂包覆处理减少水分子逸出。利用扫描电子显微镜和能谱仪对使用不同制备工艺制备的IPMC表层电极进行结构表征和元素分析,使用四探针法测定不同IPMC样品的表面电阻来考察电极导电性能。通过研究IPMC样品在直流和交流电压下的末端位移、输出力和工作寿命的变化规律,考察电极厚度、阳离子种类以及外加电场等因素对IPMC电致动性能的影响。对IPMC人工肌肉的电极材料进行初步探索,选用常见的铜金属和导电高分子聚苯胺作为电极材料制备了IPMC。
[Abstract]:Ionic polymer-metal composites (Ionic polymer-metal composites) have been widely studied in recent years, which can generate oscillating responses under the action of an alternating electric field. Because of its advantages of low driving voltage, large deformation, low density and easy to be machined into the shape people need, it is used to manufacture micro actuators and sensors for artificial robots. And artificial muscles with similar properties to mammalian muscles. IPMC was prepared by chemical reduction from Nafion 117 film and silver metal. In the process of chemical reduction, glucose, sodium borohydride and vitamin C were used as reducing agents, respectively. The morphology of the prepared IPMC was characterized and the effect of reducing agent on the IPMC electrode was investigated. In view of the defects in the electrode layer, various methods are used to process and modify the electrode on the surface. In order to obtain better electrokinetic performance, polyvinylpyrrolidone (PVP) was introduced as dispersant in the preparation of silver metal electrode to inhibit the agglomeration of metal particles to produce a dense surface electrode with good electrical conductivity. The electrode thickness was increased by increasing the number of electroless plating times, the defects in the electrode layer were reduced by spraying gold electrode thin layer with ion sputtering coating instrument on the electrode surface, and the water molecule escape was reduced by vacuum silicon resin coating on the IPMC sample. The structure and elemental analysis of IPMC surface electrode prepared by different preparation processes were studied by scanning electron microscope and energy spectrometer. The surface resistance of different IPMC samples was measured by four-probe method to investigate the conductivity of the electrode. The effects of electrode thickness, cationic species and applied electric field on the electrokinetic properties of IPMC were investigated by studying the variation of terminal displacement, output force and working life of IPMC samples under DC and AC voltages. The electrode materials of IPMC artificial muscle were preliminarily explored. Common copper metal and conductive polymer Polyaniline were used as electrode materials to prepare IPMC.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：R318.1;TB381

【参考文献】