High-voltage ceramic capacitor dielectric and preparation method thereof

• Main Authors: LI JIE, LI XIN, LI YAN, LING JIANGU, LUO ZHONGYOU
• Format: Patent
• Language: Chinese; English
• Published: 29.09.2023
• Subjects: ARTIFICIAL STONE; BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; ELECTRICITY; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention relates to a high-voltage ceramic capacitor medium, which is characterized by being prepared from the following raw materials in percentage by weight: 56 to 89 percent of BaTiO3, 1 to 26 percent of SrTiO3, 1 to 14 percent of NaAgMoO4, 0.03 to 9 percent of Na2WO4, 0.02 to 1.4 percent of V2O5, 0.1 to 1.7 percent of ZnO and 0.01 to 0.95 percent of MnO2. The invention also provides a preparation method of the high-voltage ceramic capacitor medium. The high-voltage ceramic capacitor dielectric has the advantages of high dielectric constant, small dielectric loss and high voltage resistance, does not pollute the environment in the preparation and use processes, and can be sintered at a lower temperature. 一种高压陶瓷电容器介质，其特征在于由下述重量配比的原料制成：BaTiO3 56-89%，SrTiO3 1-26%，NaAgMoO4 1-14%，Na2WO4 0.03-9%，V2O5 0.02-1.4%，ZnO 0.1-1.7%，MnO2 0.01-0.95%。本发明还提供上述高压陶瓷电容器介质的一种制备方法。这种高压陶瓷电容器介质介电常数高，介质损耗小，且耐电压高，在制备和使用过程中不污染环境，并且能够在较低温度下烧结。