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Perovskite-like thermistor material and preparation method thereof
The invention relates to a perovskite-like thermistor material which is prepared by adopting a Pechini method. A Y2/3Cu3Ti<4-x>MnO12 (x is more than or equal to 0.1 and less than or equal to 1) thermal sensitive ceramic material with a perovskite-like structure can be obtained by taking yttrium nitrate hexahydrate, copper nitrate trihydrate, tetrabutyl titanate and manganous nitrate tetrahydrate as raw materials, ethylene glycol as polymerizing agent and citric acid as chelating agent, carrying out complex coordination reaction, mixing, stirring, heating, drying, grinding, calcining, regrinding, cold isostatic pressing, high-temperature sintering and electrode coating. The material constant B<-50/250> is 3579K to 4302K, and the resistivity at the temperature of 25 DEG C is 1.70*10<4> Ohm.cm to 2.20*10<7>Ohm.cm. The perovskite-like thermistor material prepared by the method is stable in performance and high in sensitivity, the thermistor material has an obvious negative temperature coefficient characteristic within the temperature range of -50 DEG C to 250 DEG C, and the material system is stable in electrical performance, high in sensitivity and suitable for manufacturing thermistors.
本发明涉及一种类钙钛矿型热敏电阻材料，该材料采用Pechini法进行制备，以六水硝酸钇，三水硝酸铜，钛酸四丁酯，四水硝酸锰为原料，以乙二醇为聚合剂，以柠檬酸为螯合剂，进行络合配位反应，经混合搅拌、加热、干燥、研磨、煅烧、再研磨，冷等静压成型、高温烧结、涂烧电极，即可得到类钙钛矿结构的Y2/3Cu3Ti4‑xMnxO12（0.1≤x≤1）热敏陶瓷材料，材料常数为材料常数为B‑50/250=3579K‑4302 K，温度25℃电阻率为1.70×104Ω•cm‑2.20×107Ω•cm。采用本发明制备的类钙钛矿型热敏电阻材料性能稳定，灵敏度高，该热敏电阻材料在温度‑50℃~250℃范围具有明显的负温度系数特性，材料体系电性能稳定，灵敏度高，适合制造热敏电阻器。
Perovskite-like thermistor material and preparation method thereof
The invention relates to a perovskite-like thermistor material which is prepared by adopting a Pechini method. A Y2/3Cu3Ti<4-x>MnO12 (x is more than or equal to 0.1 and less than or equal to 1) thermal sensitive ceramic material with a perovskite-like structure can be obtained by taking yttrium nitrate hexahydrate, copper nitrate trihydrate, tetrabutyl titanate and manganous nitrate tetrahydrate as raw materials, ethylene glycol as polymerizing agent and citric acid as chelating agent, carrying out complex coordination reaction, mixing, stirring, heating, drying, grinding, calcining, regrinding, cold isostatic pressing, high-temperature sintering and electrode coating. The material constant B<-50/250> is 3579K to 4302K, and the resistivity at the temperature of 25 DEG C is 1.70*10<4> Ohm.cm to 2.20*10<7>Ohm.cm. The perovskite-like thermistor material prepared by the method is stable in performance and high in sensitivity, the thermistor material has an obvious negative temperature coefficient characteristic within the temperature range of -50 DEG C to 250 DEG C, and the material system is stable in electrical performance, high in sensitivity and suitable for manufacturing thermistors.
本发明涉及一种类钙钛矿型热敏电阻材料，该材料采用Pechini法进行制备，以六水硝酸钇，三水硝酸铜，钛酸四丁酯，四水硝酸锰为原料，以乙二醇为聚合剂，以柠檬酸为螯合剂，进行络合配位反应，经混合搅拌、加热、干燥、研磨、煅烧、再研磨，冷等静压成型、高温烧结、涂烧电极，即可得到类钙钛矿结构的Y2/3Cu3Ti4‑xMnxO12（0.1≤x≤1）热敏陶瓷材料，材料常数为材料常数为B‑50/250=3579K‑4302 K，温度25℃电阻率为1.70×104Ω•cm‑2.20×107Ω•cm。采用本发明制备的类钙钛矿型热敏电阻材料性能稳定，灵敏度高，该热敏电阻材料在温度‑50℃~250℃范围具有明显的负温度系数特性，材料体系电性能稳定，灵敏度高，适合制造热敏电阻器。
Perovskite-like thermistor material and preparation method thereof
一种类钙钛矿型热敏电阻材料及其制备方法
ZHANG BO (author) / WEI YAXIN (author) / FU ZHILONG (author) / CHANG AIMIN (author)
2021-02-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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