Check patentability & draft patents in minutes with Patsnap Eureka AI!

Organic additive for controlling particle size of nano zirconium oxide powder

An organic additive and nano-zirconia technology, which is applied in the direction of zirconia, nanotechnology, nanotechnology, etc., can solve the problems of cumbersome steps, uncontrollable, large particle size of zirconia, and achieve simple preparation steps and small particle size of powder , low cost effect

Inactive Publication Date: 2019-08-16
南京赛诺特斯材料科技有限公司
View PDF1 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the steps of the preparation method of using formic acid to dissolve a zirconium compound provided by this patent are cumbersome, and the particle size of the zirconia prepared by this patent is relatively large and cannot be controlled

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Zirconium oxychloride (ZrOCl) with a concentration of 0.8 mol / L was 2 ·8H 2 O) the pH value of the solution is adjusted to about 4.5, then add 1.5% polyethylene glycol as surfactant;

[0021] Prepare an oxalic acid solution with a concentration of 0.5mol / L and a formic acid solution with a concentration of 0.5mol / L, and then mix the two at a volume ratio of 2:1 to obtain an organic additive;

[0022] Slowly drop the organic additive into the zirconium oxychloride solution during constant stirring to obtain a transparent sol, wherein the sum of the amounts of oxalic acid and formic acid is the same as that of zirconium oxychloride;

[0023] Stir the transparent sol for 40 minutes, and continue to add excessive organic additives dropwise. Preferably, the sum of the molar weights of oxalic acid and formic acid in the organic additives is 4% to 5% of the molar weight of the above-mentioned mother liquid zirconium oxychloride, so that sol-gel occurs Transformation and coag...

Embodiment 2

[0030] Zirconium oxychloride (ZrOCl) with a concentration of 0.8 mol / L was 2 ·8H 2 O) the pH value is adjusted to about 4.5, then add 1.5% polyethylene glycol as surfactant;

[0031] Prepare an oxalic acid solution with a concentration of 0.5mol / L and a formic acid solution with a concentration of 0.5mol / L, and then mix the two at a volume ratio of 3:2 to obtain an organic additive;

[0032] Slowly drop the organic additive into the zirconium oxychloride solution during constant stirring to obtain a transparent sol, wherein the sum of the amounts of oxalic acid and formic acid is the same as that of zirconium oxychloride;

[0033] Stir the transparent sol for 40 minutes, and continue to add excessive organic additives dropwise. Preferably, the sum of the molar weights of oxalic acid and formic acid in the organic additives is 4% to 5% of the molar weight of the above-mentioned mother liquid zirconium oxychloride, so that sol-gel occurs Transformation and coagulation of collo...

Embodiment 3

[0040] Zirconium oxychloride (ZrOCl) with a concentration of 0.8 mol / L was 2 ·8H 2 O) the pH value of the solution is adjusted to about 4.5, then add 1.5% polyethylene glycol as surfactant;

[0041] Prepare an oxalic acid solution with a concentration of 0.5mol / L and a formic acid solution with a concentration of 0.5mol / L, and then mix the two at a volume ratio of 1:1 to obtain an organic additive;

[0042] Slowly drop the organic additive into the zirconium oxychloride solution during constant stirring to obtain a transparent sol, wherein the sum of the amounts of oxalic acid and formic acid is the same as that of zirconium oxychloride;

[0043] Stir the transparent sol for 40 minutes, and continue to add excessive organic additives dropwise. Preferably, the sum of the molar weights of oxalic acid and formic acid in the organic additives is 4% to 5% of the molar weight of the above-mentioned mother liquid zirconium oxychloride, so that sol-gel occurs Transformation and coag...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to an organic additive for controlling a particle size of nano zirconium oxide powder. The main components of the organic additive are oxalic acid and formic acid. The zirconiumoxide powder is prepared by the following steps: adjusting a pH of a zirconium oxychloride solution to 4.5, adding 1.5% polyethylene glycol as a surfactant, mixing the organic additive and the zirconium oxychloride solution, performing centrifugation, drying a precipitate, and performing calcination to obtain the zirconium oxide powder.

Description

technical field [0001] The invention relates to the field of nano material preparation, in particular to an organic additive for controlling the particle size of nano zirconia powder. Background technique [0002] Nano zirconia has the characteristics of strong thermal shock resistance, high temperature resistance, good chemical stability, and outstanding material composite. Nano-zirconia is not only used in the field of structural ceramics and functional ceramics, but also used to improve the surface properties of metal materials. The preparation methods of nano-zirconia usually include precipitation method, hydrothermal synthesis method, sol-gel method and cracking method of organic compounds. [0003] The Chinese invention with the publication number CN1084712C dissolves a zirconium compound with formic acid, removes the volatile components and calcines the residue, wherein a chloride-free zirconium compound is dissolved in a formic acid / water mixture and in a method kno...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C01G25/02C04B35/48B82Y40/00B82Y30/00
CPCC01G25/02C04B35/48B82Y40/00B82Y30/00C01P2004/64
Inventor 张天舒孔令兵
Owner 南京赛诺特斯材料科技有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com