A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of nano zirconium oxide powder
The invention provides a preparation method of nano zirconium oxide powder, comprising the following steps of: mixing inorganic zirconium salt, inorganic yttrium salt and water to obtain a mixed solution; dropwise adding the mixed solution into an ammonia water solution, and carrying out a precipitation reaction to obtain a precipitation solution; mixing the precipitation solution with an organicsolvent to obtain a precursor precipitation solution; filtering part of the precursor precipitation solution to obtain a precursor; mixing the precursor with the residual precursor precipitation solution, and filtering to obtain powder; and calcining the powder to obtain the nano zirconium oxide powder. By adding the organic solvent, the dielectric constant of the medium is effectively reduced, and the electrostatic repulsion between ions is reduced, so that the monodisperse spherical zirconium oxide powder is obtained; before calcination, the powder and the precursor precipitation solution are mixed, so that the particle surface defects and the surface activity are further reduced, the nano zirconium oxide powder with a low specific surface area is prepared, and the low specific surface area and high sintering activity of the zirconium oxide powder are realized.
本发明提供了一种纳米氧化锆粉体的制备方法，包括以下步骤：将无机锆盐、无机钇盐与水混合，得到混合溶液；将所述混合溶液滴加到氨水溶液中，进行沉淀反应，得到沉淀液；将所述沉淀液与有机溶剂混合，得到前驱体沉淀液；将所述部分前驱体沉淀液进行过滤，得到前驱体；将所述前驱体与所述剩余前驱体沉淀液混合后过滤，得到粉体；将所述粉体进行煅烧，得到纳米氧化锆粉体。本发明通过添加有机溶剂有效降低介质介电常数，降低离子间的静电斥力，从而获得单分散的球形氧化锆粉体；在煅烧前将粉体和前驱体沉淀液混合，进一步降低颗粒表面缺陷与表面活性，进而制备得到了低比表面积的纳米氧化锆粉体，实现了氧化锆粉体的低比表面积，高烧结活性。
Preparation method of nano zirconium oxide powder
The invention provides a preparation method of nano zirconium oxide powder, comprising the following steps of: mixing inorganic zirconium salt, inorganic yttrium salt and water to obtain a mixed solution; dropwise adding the mixed solution into an ammonia water solution, and carrying out a precipitation reaction to obtain a precipitation solution; mixing the precipitation solution with an organicsolvent to obtain a precursor precipitation solution; filtering part of the precursor precipitation solution to obtain a precursor; mixing the precursor with the residual precursor precipitation solution, and filtering to obtain powder; and calcining the powder to obtain the nano zirconium oxide powder. By adding the organic solvent, the dielectric constant of the medium is effectively reduced, and the electrostatic repulsion between ions is reduced, so that the monodisperse spherical zirconium oxide powder is obtained; before calcination, the powder and the precursor precipitation solution are mixed, so that the particle surface defects and the surface activity are further reduced, the nano zirconium oxide powder with a low specific surface area is prepared, and the low specific surface area and high sintering activity of the zirconium oxide powder are realized.
本发明提供了一种纳米氧化锆粉体的制备方法，包括以下步骤：将无机锆盐、无机钇盐与水混合，得到混合溶液；将所述混合溶液滴加到氨水溶液中，进行沉淀反应，得到沉淀液；将所述沉淀液与有机溶剂混合，得到前驱体沉淀液；将所述部分前驱体沉淀液进行过滤，得到前驱体；将所述前驱体与所述剩余前驱体沉淀液混合后过滤，得到粉体；将所述粉体进行煅烧，得到纳米氧化锆粉体。本发明通过添加有机溶剂有效降低介质介电常数，降低离子间的静电斥力，从而获得单分散的球形氧化锆粉体；在煅烧前将粉体和前驱体沉淀液混合，进一步降低颗粒表面缺陷与表面活性，进而制备得到了低比表面积的纳米氧化锆粉体，实现了氧化锆粉体的低比表面积，高烧结活性。
Preparation method of nano zirconium oxide powder
一种纳米氧化锆粉体的制备方法
SHI LIYI (author) / YUAN SHUAI (author) / WANG YI (author)
2020-10-30
Patent
Electronic Resource
Chinese
Nano brown zirconium oxide powder and preparation method thereof
| European Patent Office | 2021
Preparation method of scandium oxide-stabilized zirconium oxide nano-powder
| European Patent Office | 2020
Preparation method of yttrium-stabilized zirconium oxide nano-powder
| European Patent Office | 2023
Preparation method of spherical yttrium zirconium oxide nano powder
| European Patent Office | 2024
Preparation method of antibacterial dental restoration nano zirconium oxide powder
| European Patent Office | 2021