研制厚膜敏感陶瓷材料的新方法

重点研究以Ba1-xSrxTiO3和(V1-xCrx)2O3为主要基体的双基体PTC热敏厚膜材料的相关特性。用(V1-xCrx)2O3取代价格昂贵的RuO2和银粉，不仅降低了室温电阻率，消除了非欧姆接触，同时提高了厚膜材料的性能，并显著降低了成本。独立地设计了用化学共沉淀方法制备Ba1-xSrxTiO3微粉的2个化学反应方程式，深入分析了聚乙二醇和无水乙醇在制备纳米粉时所起的防止颗粒发生团聚现象的作用。

A New Method of Preparing Thick-film Sensitive Ceramic Material

The properties of Ba1-xSrxTiO3 and (V1-xCrx)2O3 double base PTC thermosensitive thick film material were studied. As (V1-xCrx)2O3 was used to replaced the expensive RuO2 and silver powders, the room temperature resistance was lowered, and non ohm contact was eliminated, not only the property of the thick film material was improved but also cost was greatly reduced. Two equations have been independently designed, according to which Ba1-xSrxTiO3 micro powders were prepared by using chemical coprecipitation. The results show that polyethylene glycol (PEG) and anhydrous ethanol can prevent granule agglomeration when making nano powders. As polyethylene glycol (PEG) with large formula weight is not poisonous and no harm to people's health, popularizing it is worth.