铁酸镧与高分子复合材料湿敏元件特性分析  

Properties analysis of humidity sensor of composite material of LaFeO_3 and polymer

作　　者：石凯贺[1] 王兢[1] 王晓华[1] 

机构地区：[1]大连理工大学电信学院,辽宁大连116023

出　　处：《传感器技术》2004年第10期16-17,21,共3页Journal of Transducer Technology

基　　金：国家自然科学基金资助项目(60074031)

摘　　要：采用纳米铁酸镧与高分子复合材料制成湿敏元件。研究了复合材料和湿敏元件的制作,测试讨论了灵敏度、湿滞、电容特性、阻抗特性、响应 恢复时间等湿度敏感特性。结果表明:元件的灵敏度较高、湿滞较小,元件的电容值和阻抗值随频率与相对湿度而变化。A humidity sensor is fabricated with the composite material of nanometer lanthanum ferrite and the polymer.The preparation of the composite material and the humidity sensor is reported.The humidity sensing properties are tested and discussed such as the sensitivity,the hysteresis,the capacitance and impedance characteristics and the response-recovery time.The results show that the sensor has high sensitivity,small hysteresis.The capacitance and impedance of the sensor vary with the relative humidity and the frequencies.

关 键 词：湿敏元件 铁酸镧 高分子 复合材料 

分 类 号：TP212.2[自动化与计算机技术—检测技术与自动化装置]