【作者】 宋刚； 王兢；

【Author】 Song Gang Wang Jing(School of Electron and Information Engineering, Dalian University of Technology, Dalian 116023, China)

【机构】 大连理工大学电信学院；

【摘要】 纳米钛酸钡（nano-BaTiO₃）与高分子季胺盐型丙烯酸树脂（Poly QAR）是两种良好的湿敏材料。将两种材料制备成BaTiO₃/Poly、Ploy/BaTiO₃双层膜湿敏元件。双层膜元件的灵敏度较高,相对湿度从11%RH变化到98%RH的过程中,其电阻变化了4～5个数量级。与单层膜相比,双层膜的湿滞更小。无论是从数据点的测量误差范围方面,还是元件长期稳定性方面,双层膜BaTiO₃/Poly、Ploy/BaTiO₃都要优于单层膜Poly和BaTiO₃元件。由于采用的是双层复合方式,因此双层膜的若干优点得益于上下层材料之间的复合界面。更多还原

【Abstract】 Both nanometer BaTiO₃ and polymer quaternary acrylic resin （QAR） possess good humidity sensing properties. Humidity sensors with two layers of BaTiO₃/polymer and polymer/BaTiO₃ were made, respectively. The resistance of the bilayer humidity sensors changes 4～5 orders during the relative humidity variation from 11%～98%. Some properties of the bilayer sensors, such as the humidity hysteresis and long-term stability, are better than the ones of both one-layer BaTiO₃ or QAR sensors. The interfaces of two kinds of the materials may be an important actor in the bilayer sensors.更多还原