A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Barium titanate powder as well as preparation method and application thereof
The invention discloses barium titanate powder as well as a preparation method and application thereof. The barium titanate powder is prepared from the following raw materials: a titanium source, a barium source, a precipitator, an additive and a template agent, wherein the precipitator comprises at least one of acetic acid, lactic acid and citric acid; the additive comprises polycarboxylic acid ammonium salt; the template agent comprises at least one of polyvinylpyrrolidone, polyethylene glycol and span. The barium titanate powder prepared by taking a specific type of titanium source, barium source, precipitator, additive and template agent as raw materials is small in average particle size, high in dispersity and good in crystallinity; wherein the additive ammonium polycarboxylate has coordination and steric hindrance effects, aiming at a coprecipitation precursor formed by the titanium source, the barium source, the precipitant, the additive and the template agent, the coordination and steric hindrance effects can improve the dispersity of the coprecipitation precursor and prevent the coprecipitation precursor from being agglomerated; therefore, the barium titanate powder with small average particle size, high dispersity and good crystallinity can be obtained.
本发明公开了一种钛酸钡粉体及其制备方法与应用，该钛酸钡粉体的原料包括钛源、钡源、沉淀剂、添加剂和模板剂；其中，所述沉淀剂包括乙酸、乳酸、柠檬酸中的至少一种；所述添加剂包括聚羧酸铵盐；所述模板剂包括聚乙烯吡咯烷酮、聚乙二醇、司盘中的至少一种。本发明以特定种类的钛源、钡源、沉淀剂、添加剂和模板剂为原料制备的钛酸钡粉平均粒径小、分散性高、结晶度好；其中，添加剂聚羧酸铵盐具有配位和空间位阻的作用，针对钛源、钡源、沉淀剂、添加剂和模板剂形成的共沉淀前驱体，其配位和空间位阻作用能够提高共沉淀前驱体的分散性，阻止共沉淀前驱体团聚，从而有利于获得平均粒径小、分散性高、结晶度好的钛酸钡粉体。
Barium titanate powder as well as preparation method and application thereof
The invention discloses barium titanate powder as well as a preparation method and application thereof. The barium titanate powder is prepared from the following raw materials: a titanium source, a barium source, a precipitator, an additive and a template agent, wherein the precipitator comprises at least one of acetic acid, lactic acid and citric acid; the additive comprises polycarboxylic acid ammonium salt; the template agent comprises at least one of polyvinylpyrrolidone, polyethylene glycol and span. The barium titanate powder prepared by taking a specific type of titanium source, barium source, precipitator, additive and template agent as raw materials is small in average particle size, high in dispersity and good in crystallinity; wherein the additive ammonium polycarboxylate has coordination and steric hindrance effects, aiming at a coprecipitation precursor formed by the titanium source, the barium source, the precipitant, the additive and the template agent, the coordination and steric hindrance effects can improve the dispersity of the coprecipitation precursor and prevent the coprecipitation precursor from being agglomerated; therefore, the barium titanate powder with small average particle size, high dispersity and good crystallinity can be obtained.
本发明公开了一种钛酸钡粉体及其制备方法与应用，该钛酸钡粉体的原料包括钛源、钡源、沉淀剂、添加剂和模板剂；其中，所述沉淀剂包括乙酸、乳酸、柠檬酸中的至少一种；所述添加剂包括聚羧酸铵盐；所述模板剂包括聚乙烯吡咯烷酮、聚乙二醇、司盘中的至少一种。本发明以特定种类的钛源、钡源、沉淀剂、添加剂和模板剂为原料制备的钛酸钡粉平均粒径小、分散性高、结晶度好；其中，添加剂聚羧酸铵盐具有配位和空间位阻的作用，针对钛源、钡源、沉淀剂、添加剂和模板剂形成的共沉淀前驱体，其配位和空间位阻作用能够提高共沉淀前驱体的分散性，阻止共沉淀前驱体团聚，从而有利于获得平均粒径小、分散性高、结晶度好的钛酸钡粉体。
Barium titanate powder as well as preparation method and application thereof
一种钛酸钡粉体及其制备方法与应用
QIU JIHUA (author) / MA YANHONG (author)
2024-10-25
Patent
Electronic Resource
Chinese
Barium titanate powder as well as preparation method and application thereof
| European Patent Office | 2024
Barium titanate ceramic powder as well as preparation method and application thereof
| European Patent Office | 2024
Barium calcium titanate powder as well as preparation method and application thereof
| European Patent Office | 2024
Calcium-doped barium titanate powder as well as preparation method and application thereof
| European Patent Office | 2024
Barium calcium titanate ceramic powder as well as preparation method and application thereof
| European Patent Office | 2023