Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of barium titanate powder
The invention relates to a preparation method of barium titanate powder, the preparation method specifically comprises the following steps: 1) respectively carrying out sanding pretreatment on a titanium source and a barium source as reaction raw materials until the average particle size of the titanium source and the barium source is below 200nm and the molar ratio of titanium to barium in the titanium source and the barium source is 1: (0.95-1.05); then carrying out mixing and sanding; obtaining a mixed raw material; 2) mixing the titanium source and the barium source treated in the step 1), and adding a solvent, a dispersing agent and a combustion improver into the mixed raw material; uniformly mixing to obtain mixed slurry; carrying out sanding and spray drying on the mixed slurry to obtain mixed powder; and 3) carrying out high-temperature calcination on the mixed powder obtained in the step 2) to obtain the barium titanate powder. Based on the solid-phase reaction principle and high-molecular polymer decomposition coating, the particle size of the barium titanate powder product is smaller and more uniform, and the tetragonal phase proportion is higher.
本发明涉及一种钛酸钡粉体制备方法，具体地，其包括以下步骤：1)采用钛源与钡源作为反应原料，将其分别进行砂磨预处理，直至钛源与钡源的平均粒径均达到200nm以下，且钛源与钡源中钛与钡的摩尔比在1:0.95‑1.05之间；然后进行混合砂磨；获得混合原料；2)将步骤1)中处理好的钛源与钡源混合，向混合原料中添加溶剂、分散剂以及助燃剂；混合均匀获得混合浆料；对上述混合浆料进行砂磨与喷雾干燥，获得混合粉体；3)对步骤2)获得的混合粉体进行高温煅烧，获得钛酸钡粉体。本发明基于固相反应原理和高分子聚合物分解包覆，使得钛酸钡粉体产物的粒径更小更均匀，且四方相比例更高。
Preparation method of barium titanate powder
The invention relates to a preparation method of barium titanate powder, the preparation method specifically comprises the following steps: 1) respectively carrying out sanding pretreatment on a titanium source and a barium source as reaction raw materials until the average particle size of the titanium source and the barium source is below 200nm and the molar ratio of titanium to barium in the titanium source and the barium source is 1: (0.95-1.05); then carrying out mixing and sanding; obtaining a mixed raw material; 2) mixing the titanium source and the barium source treated in the step 1), and adding a solvent, a dispersing agent and a combustion improver into the mixed raw material; uniformly mixing to obtain mixed slurry; carrying out sanding and spray drying on the mixed slurry to obtain mixed powder; and 3) carrying out high-temperature calcination on the mixed powder obtained in the step 2) to obtain the barium titanate powder. Based on the solid-phase reaction principle and high-molecular polymer decomposition coating, the particle size of the barium titanate powder product is smaller and more uniform, and the tetragonal phase proportion is higher.
本发明涉及一种钛酸钡粉体制备方法，具体地，其包括以下步骤：1)采用钛源与钡源作为反应原料，将其分别进行砂磨预处理，直至钛源与钡源的平均粒径均达到200nm以下，且钛源与钡源中钛与钡的摩尔比在1:0.95‑1.05之间；然后进行混合砂磨；获得混合原料；2)将步骤1)中处理好的钛源与钡源混合，向混合原料中添加溶剂、分散剂以及助燃剂；混合均匀获得混合浆料；对上述混合浆料进行砂磨与喷雾干燥，获得混合粉体；3)对步骤2)获得的混合粉体进行高温煅烧，获得钛酸钡粉体。本发明基于固相反应原理和高分子聚合物分解包覆，使得钛酸钡粉体产物的粒径更小更均匀，且四方相比例更高。
Preparation method of barium titanate powder
一种钛酸钡粉体制备方法
PAN PENGFEI (Autor:in) / ZHANG LEI (Autor:in) / YU SHUHUI (Autor:in) / SUN RONG (Autor:in)
16.07.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Preparation method of barium zirconate titanate powder
| Europäisches Patentamt | 2015