Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of nano barium titanate powder
The invention discloses a preparation method of nano barium titanate powder, which comprises the following steps: S1, mixing a barium source solution with a poly (diallyldimethylammonium chloride) solution, and then mixing with a titanium source solution to obtain a mixed solution; s2, carrying out first-stage reaction on raw materials comprising an alkali solution, a poly (diallyldimethylammonium chloride) solution and the mixed solution in the step S1 in supergravity reaction equipment at a first rotating speed, and then carrying out second-stage reaction at a second rotating speed to obtain a solid product; the first rotating speed is lower than the second rotating speed; and S3, calcining the solid product to prepare the nano barium titanate powder. According to the preparation method disclosed by the invention, a two-step supergravity process is combined with a two-step adding method of the poly (diallyldimethylammonium chloride), and the nano barium titanate powder with high dispersion, narrow particle size distribution, good uniformity and small particle size is prepared through cooperation of centrifugal force shearing of supergravity and the dispersion effect of the poly (diallyldimethylammonium chloride).
本发明公开了一种纳米钛酸钡粉体的制备方法，包括以下步骤：S1：将钡源溶液与聚二烯丙基二甲基氯化铵溶液混合，然后与钛源溶液混合，得到混合液；S2：使包括碱溶液、聚二烯丙基二甲基氯化铵溶液、步骤S1中的混合液的原料在超重力反应设备中以第一转速进行第一阶段反应，然后以第二转速进行第二阶段反应，得到固体产物；所述第一转速低于所述第二转速；S3：将所述固体产物煅烧，制得所述纳米钛酸钡粉体。本发明的制备方法采用两步超重力工艺与聚二烯丙基二甲基氯化铵两步添加法相结合，通过超重力的离心力剪切以及聚二烯丙基二甲基氯化铵的分散作用的配合，制备出高分散、粒径分布窄、均匀性好、粒径小的纳米钛酸钡粉体。
Preparation method of nano barium titanate powder
The invention discloses a preparation method of nano barium titanate powder, which comprises the following steps: S1, mixing a barium source solution with a poly (diallyldimethylammonium chloride) solution, and then mixing with a titanium source solution to obtain a mixed solution; s2, carrying out first-stage reaction on raw materials comprising an alkali solution, a poly (diallyldimethylammonium chloride) solution and the mixed solution in the step S1 in supergravity reaction equipment at a first rotating speed, and then carrying out second-stage reaction at a second rotating speed to obtain a solid product; the first rotating speed is lower than the second rotating speed; and S3, calcining the solid product to prepare the nano barium titanate powder. According to the preparation method disclosed by the invention, a two-step supergravity process is combined with a two-step adding method of the poly (diallyldimethylammonium chloride), and the nano barium titanate powder with high dispersion, narrow particle size distribution, good uniformity and small particle size is prepared through cooperation of centrifugal force shearing of supergravity and the dispersion effect of the poly (diallyldimethylammonium chloride).
本发明公开了一种纳米钛酸钡粉体的制备方法，包括以下步骤：S1：将钡源溶液与聚二烯丙基二甲基氯化铵溶液混合，然后与钛源溶液混合，得到混合液；S2：使包括碱溶液、聚二烯丙基二甲基氯化铵溶液、步骤S1中的混合液的原料在超重力反应设备中以第一转速进行第一阶段反应，然后以第二转速进行第二阶段反应，得到固体产物；所述第一转速低于所述第二转速；S3：将所述固体产物煅烧，制得所述纳米钛酸钡粉体。本发明的制备方法采用两步超重力工艺与聚二烯丙基二甲基氯化铵两步添加法相结合，通过超重力的离心力剪切以及聚二烯丙基二甲基氯化铵的分散作用的配合，制备出高分散、粒径分布窄、均匀性好、粒径小的纳米钛酸钡粉体。
Preparation method of nano barium titanate powder
一种纳米钛酸钡粉体的制备方法
QIU JIHUA (Autor:in) / MA YANHONG (Autor:in)
27.09.2024
Patent
Elektronische Ressource
Chinesisch
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