低室温电阻率正温度系数热敏电阻器  

PTC Thermistors with Low Resistivity at Room Temperature

作　　者：吴柏源[1] 邹向[1] 江美玉[1] 

机构地区：[1]华南理工大学

出　　处：《电子元件与材料》1994年第5期15-18,共4页Electronic Components And Materials

摘　　要：Ｖ２Ｏ３与聚合物复合可制备室温电阻率０．４Ω·ｃｍ，ＰＴＣ效应高达１０个数量级的热敏电阻材料。讨论了Ｖ２Ｏ３含量、聚合物种类和含量对室温电阻率和ＰＴＣ效应的影响规律，并对复合材料的微观结构进行分析，用隧道效应解释了ＰＴＣ效应。V2O3 filler is added to polymer matrix to produce composite having low resistivity to 0.4 ohm. cm at room temperature and large PTC to the extent of 10 orders of magnitude. Dependence of V2O3 content,polymer kinds and content on thermistor resistivity at room temperature and PTC is discussed. Microstructure of the composite is analysised and PTC effect is explained in term of tunneling.

关 键 词：PTC 电阻率 热敏电阻 三氧化二钒 

分 类 号：TN373[电子电信—物理电子学]