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Barium titanate-based thermistor and preparation method thereof
The invention provides a barium titanate-based thermistor and a preparation method thereof, and the preparation method comprises the following steps: 1) mixing ceramic powder and a sintering aid to obtain mixed powder, and dispersing the mixed powder, a dispersant, a binder and a release agent in a dispersion medium to obtain mixed slurry; the ceramic powder comprises a main material and an additive, and the main material comprises BaCO3 and TiO2; 2) performing spray granulation on the mixed slurry to obtain granules; and 3) carrying out dry-pressing molding, sintering and electrode plating on the granules to obtain the barium titanate-based thermistor. According to the preparation method, the ceramic powder is combined with other auxiliaries, and spray granulation and dry pressing processes are adopted, so that the sintering temperature of the ceramic is reduced to 800-1200 DEG C from 1300 DEG C which is generally identified in the industry, the barium titanate-based thermistor is prepared through low-temperature sintering, the sintering cost is greatly reduced, the process is simple, the energy consumption is low, and the preparation method is suitable for large-scale industrial production.
本发明提供一种钛酸钡基热敏电阻及其制备方法，所述制备方法包括以下步骤：1)将陶瓷粉料和烧结助剂混合得混合粉料，将混合粉料、分散剂、粘结剂和脱模剂分散于分散介质中，得混合料浆；所述陶瓷粉料包括主料和添加剂，所述主料包括BaCO3和TiO2；2)将所述混合料浆喷雾造粒，得颗粒料；3)将所述颗粒料干压成型，烧结，镀电极，即制得钛酸钡基热敏电阻。本发明通过将陶瓷粉料与其它助剂相结合，并采用喷雾造粒及干压成型工艺，将陶瓷的烧结温度由行业内普遍认定的1300℃降至800～1200℃，实现低温烧结制备钛酸钡基热敏电阻，大大降低了烧结成本，工艺简单，能耗低，适合大规模工业化生产。
Barium titanate-based thermistor and preparation method thereof
The invention provides a barium titanate-based thermistor and a preparation method thereof, and the preparation method comprises the following steps: 1) mixing ceramic powder and a sintering aid to obtain mixed powder, and dispersing the mixed powder, a dispersant, a binder and a release agent in a dispersion medium to obtain mixed slurry; the ceramic powder comprises a main material and an additive, and the main material comprises BaCO3 and TiO2; 2) performing spray granulation on the mixed slurry to obtain granules; and 3) carrying out dry-pressing molding, sintering and electrode plating on the granules to obtain the barium titanate-based thermistor. According to the preparation method, the ceramic powder is combined with other auxiliaries, and spray granulation and dry pressing processes are adopted, so that the sintering temperature of the ceramic is reduced to 800-1200 DEG C from 1300 DEG C which is generally identified in the industry, the barium titanate-based thermistor is prepared through low-temperature sintering, the sintering cost is greatly reduced, the process is simple, the energy consumption is low, and the preparation method is suitable for large-scale industrial production.
本发明提供一种钛酸钡基热敏电阻及其制备方法，所述制备方法包括以下步骤：1)将陶瓷粉料和烧结助剂混合得混合粉料，将混合粉料、分散剂、粘结剂和脱模剂分散于分散介质中，得混合料浆；所述陶瓷粉料包括主料和添加剂，所述主料包括BaCO3和TiO2；2)将所述混合料浆喷雾造粒，得颗粒料；3)将所述颗粒料干压成型，烧结，镀电极，即制得钛酸钡基热敏电阻。本发明通过将陶瓷粉料与其它助剂相结合，并采用喷雾造粒及干压成型工艺，将陶瓷的烧结温度由行业内普遍认定的1300℃降至800～1200℃，实现低温烧结制备钛酸钡基热敏电阻，大大降低了烧结成本，工艺简单，能耗低，适合大规模工业化生产。
Barium titanate-based thermistor and preparation method thereof
一种钛酸钡基热敏电阻及其制备方法
LIN CONGYI (author) / LIU QIANG (author) / ZHAO LILI (author) / XU LI (author)
2023-11-28
Patent
Electronic Resource
Chinese
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