We studied the detailed electrochemical and electromechanical properties of a polyvinyl chloride (PVC) gel with dibutyladipate (DBA) as a plasticizer and developed an electromechanical model based on the electrochemical data. We evaluated the electric deformation of the PVC gel by the bending displacement response of the PVC gel strip when a square-wave voltage is applied. For every electrode, the bending responses were to the anode side and increased with the applied voltage. The bending response of the PVC gel is considered to be due to the electric creep movement on the anode surface. We checked this result by optical microscopy. We studied the electrochemical impedance measurements of the PVC gel under bias voltages and the voltage–current and voltage–displacement measurements in response to a triangle-wave voltage. Based on the above electromechanical and electrochemical experimental results, we developed a deformation model of the PVC gel where the electric bending response is basically due to the electrochemical formation of the solvent-rich layer and its deformation from the Maxwell stress. We estimated the displacements with applied voltages of 200 and 1000 V, and the model results were in good agreement with the experimental results despite the rough estimation.

我们研究了以己二酸二丁酯（DBA）为增塑剂的聚氯乙烯（PVC）凝胶的详细电化学和机电性能，并基于电化学数据建立了机电模型。我们通过施加方波电压时PVC胶条的弯曲位移响应来评估PVC胶的电变形。对于每个电极，弯曲响应都在阳极侧，并随施加的电压而增加。PVC凝胶的弯曲响应被认为是由于阳极表面上的电蠕变运动引起的。我们通过光学显微镜检查了该结果。我们研究了在偏置电压下PVC凝胶的电化学阻抗测量，以及响应三角波电压的电压-电流和电压-位移测量。基于以上的机电和电化学实验结果，我们建立了PVC凝胶的变形模型，其中的电弯曲响应主要是由于富溶剂层的电化学形成及其因麦克斯韦应力引起的变形。我们估算了施加电压为200和1000 V时的位移，尽管进行了粗略估算，但模型结果与实验结果非常吻合。