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Large-capacitance high-temperature-resistant zinc oxide voltage-sensitive ceramic material and preparation method thereof
The invention provides a preparation method of a large-capacitance high-temperature-resistant zinc oxide voltage-sensitive ceramic material. The preparation method comprises the following steps: S1, performing dry powder ball milling on nano ZnO and B2O3, and uniformly mixing to obtain mixed powder; s2, synthesizing a composite oxide dopant Zn4B6O13 from mixed powder obtained after ball milling and mixing in the step 1 through a segmented heating method; s3, ZnO, Bi2O3, Sb2O3, MnO2, Co2O3 and the composite oxide doping agent Zn4B6O13 are subjected to homogeneous liquid phase ball milling, and mixed voltage-sensitive ceramic powder is obtained; and S4, adding a binder PVA into the mixed ceramic powder, carrying out drying treatment, pressing the mixed ceramic powder to form a ceramic blank sheet, and carrying out high-temperature sintering to obtain the zinc oxide voltage-sensitive ceramic material. According to the invention, nano ZnO and B2O3 are pre-synthesized into Zn4B6O13 at 700-900 DEG C, and the zinc oxide varistor material is further doped and modified, so that not only is the capacitive performance of the zinc oxide varistor material greatly improved, but also the sintering temperature of the ceramic material is reduced, and the high-temperature-resistant stability of the material is improved.
本发明提供了一种大电容耐高温的氧化锌压敏陶瓷材料的制备方法，包括以下步骤：S1：将纳米ZnO和B2O3进行干粉球磨混合均匀得到混合粉体；S2：步骤1球磨混合后的混合粉体通过分段加热方法合成复合氧化物掺杂剂Zn4B6O13；S3：将ZnO、Bi2O3、Sb2O3、MnO2、Co2O3和复合氧化物掺杂剂Zn4B6O13进行均质液相球磨得到混合压敏陶瓷粉体；S4：将粘结剂PVA加入到混合陶瓷粉体中后进行干燥处理，并将混合陶瓷粉体压制成型陶瓷坯片后进行高温烧结，即得到氧化锌压敏陶瓷材料。本发明将纳米ZnO和B2O3在700‑900℃下预合成Zn4B6O13，进一步掺杂改性氧化锌压敏电阻材料，不仅大大提高了氧化锌压敏电阻材料的电容性能，同时也降低了陶瓷材料的烧结温度及改善材料的耐高温稳定性。
Large-capacitance high-temperature-resistant zinc oxide voltage-sensitive ceramic material and preparation method thereof
The invention provides a preparation method of a large-capacitance high-temperature-resistant zinc oxide voltage-sensitive ceramic material. The preparation method comprises the following steps: S1, performing dry powder ball milling on nano ZnO and B2O3, and uniformly mixing to obtain mixed powder; s2, synthesizing a composite oxide dopant Zn4B6O13 from mixed powder obtained after ball milling and mixing in the step 1 through a segmented heating method; s3, ZnO, Bi2O3, Sb2O3, MnO2, Co2O3 and the composite oxide doping agent Zn4B6O13 are subjected to homogeneous liquid phase ball milling, and mixed voltage-sensitive ceramic powder is obtained; and S4, adding a binder PVA into the mixed ceramic powder, carrying out drying treatment, pressing the mixed ceramic powder to form a ceramic blank sheet, and carrying out high-temperature sintering to obtain the zinc oxide voltage-sensitive ceramic material. According to the invention, nano ZnO and B2O3 are pre-synthesized into Zn4B6O13 at 700-900 DEG C, and the zinc oxide varistor material is further doped and modified, so that not only is the capacitive performance of the zinc oxide varistor material greatly improved, but also the sintering temperature of the ceramic material is reduced, and the high-temperature-resistant stability of the material is improved.
本发明提供了一种大电容耐高温的氧化锌压敏陶瓷材料的制备方法，包括以下步骤：S1：将纳米ZnO和B2O3进行干粉球磨混合均匀得到混合粉体；S2：步骤1球磨混合后的混合粉体通过分段加热方法合成复合氧化物掺杂剂Zn4B6O13；S3：将ZnO、Bi2O3、Sb2O3、MnO2、Co2O3和复合氧化物掺杂剂Zn4B6O13进行均质液相球磨得到混合压敏陶瓷粉体；S4：将粘结剂PVA加入到混合陶瓷粉体中后进行干燥处理，并将混合陶瓷粉体压制成型陶瓷坯片后进行高温烧结，即得到氧化锌压敏陶瓷材料。本发明将纳米ZnO和B2O3在700‑900℃下预合成Zn4B6O13，进一步掺杂改性氧化锌压敏电阻材料，不仅大大提高了氧化锌压敏电阻材料的电容性能，同时也降低了陶瓷材料的烧结温度及改善材料的耐高温稳定性。
Large-capacitance high-temperature-resistant zinc oxide voltage-sensitive ceramic material and preparation method thereof
一种大电容耐高温的氧化锌压敏陶瓷材料及其制备方法
SHU JING (Autor:in) / WANG MAOHUA (Autor:in)
10.01.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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