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利用室温下栅控恒压电晕充电、热脉冲技术、开路热刺激放电电流谱以及对在充电过程中通过样品电流的监测等方法 ,系统地研究了充电栅压对具有开放性孔洞结构的聚四氟乙烯 (PTFE)多孔膜储电能力的影响 ,并讨论了导致这类影响的电荷动力学特性和材料的微结构根源 .结果显示 ,过高的充电栅压会导致沉积电荷密度下降和电荷衰减加剧 ,不利于这类新结构功能材料压电活性的提高及其热稳定性的改善 .合理的优化充电条件能使负极性充电PTFE多孔膜驻极体在有机聚合物材料中显示优异的储电能力及电荷稳定性 ,并改善其作为双极性空间电荷型压电传感膜的压电活性 .
The effect of charge gate voltage on the poly (vinylene oxide) block copolymer with open pore structure has been systematically investigated by means of grid-controlled constant voltage corona charging, thermal pulse technique, open-circuit thermal stimulation discharge current spectrum and monitoring of sample current during charging. (PTFE) porous membrane, and discusses the charge-induced kinetics and the micro-structure of the materials that lead to such effects.The results show that the overcharged gate voltage will lead to the decrease of the charge density and the charge Exacerbated attenuation is not conducive to the improvement of the piezoelectric activity and thermal stability of the new structural functional materials Reasonable optimization of the charging conditions can make the negative charge PTFE porous membrane electret in the organic polymer material shows excellent storage Electric power and charge stability, and to improve its piezoelectricity as a bipolar space charge type piezoelectric sensing film.