Method for preparing super high temperature zirconia ceramic fiber

A zirconia ceramic and ultra-high temperature technology, applied in the field of heat preservation and refractory materials, can solve the problems of multi-process, complex and high fiber cost of raw materials, and achieve the effect of simple synthesis process, stable high-temperature performance and single composition

Active Publication Date: 2014-04-30
宜兴市恒祥耐火材料有限公司
View PDF7 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The raw materials used in this patent are multi-process and complicated, resulting in high cost of fibers

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing super high temperature zirconia ceramic fiber
  • Method for preparing super high temperature zirconia ceramic fiber
  • Method for preparing super high temperature zirconia ceramic fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation method of the fully stable cubic phase zirconia crystal fiber of the present invention adopts the following steps:

[0030] (1) Weighing 40.85g of yttrium nitrate and 100g of zirconium carbonate according to the ratio of yttrium oxide: zirconia molar ratio=10%: 90% and dissolving them in deionized water. 2 times 329.2g; according to the molar ratio of zirconium carbonate: nitric acid = 1:4, measure 183ml of nitric acid (content 65%-68%), and add nitric acid to the mixture of zirconium carbonate and yttrium nitrate at room temperature 30°C under stirring conditions In the solution, continue to stir for 2 hours after the addition to obtain a colorless and transparent reaction solution, which is a composite polymerization solution containing yttrium and zirconium ions.

[0031] (2) The viscosity of the yttrium-zirconium composite sol spinning solution obtained by concentrating under reduced pressure is within the scope of 2~10Pa s;

[0032] (3) Spinning by...

Embodiment 2

[0036] As described in Example 1, the difference is that in the step (1), the consumption of deionized water is changed to 4 times by 2 times of the total mass of yttrium nitrate and zirconium carbonate, that is, changed from 329.2g to 658.4g; zirconium carbonate; The molar ratio of nitric acid is changed from 1:4 to 1:4.5, the amount of nitric acid is changed from 183ml to 206ml, and the concentration of the spinning solution concentrated under reduced pressure in step (2) is changed from 2-10 Pa·s to 10-15Pa·s.

Embodiment 3

[0038] As described in Example 1, the difference is that the consumption of deionized water in step (1) should be 5 times by 2 times of the total mass of yttrium nitrate and zirconium carbonate, that is, change 823g from 329.2g; zirconium carbonate: nitric acid The molar ratio is changed from 1:4 to 1:5, the amount of nitric acid is changed from 183ml to 229ml, and the concentration of the spinning solution concentrated under reduced pressure in step (2) is changed from 2-10 Pa·s to 20-25Pa·s.

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
lengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a method for preparing a super high temperature zirconia ceramic fiber. The method mainly comprises the following steps: stirring zirconium carbonate, yttrium nitrate and nitric acid as main raw materials and deionized water as a diluting solvent at the room temperate so as to directly generate a composite polymerization solution with yttrium zirconium ions, depressurizing, distilling and concentrating the solution to finally obtain a yttrium zirconium ion composite sol spinning liquid, performing high speed eccentric wire throwing to obtain a yttrium zirconium containing inorganic hydrate fiber, and performing thermal treatment and super high temperature treatment on the yttrium zirconium containing inorganic hydrate fiber under special atmosphere so as to obtain the yttrium zirconium composite oxide ceramic fiber. The preparation process is simple, and the prepared fiber is simple in preparation process, high in purity, stable in high temperature property and can be used within the temperature range less than 2,250 DEG C for a long time.

Description

technical field [0001] The invention relates to a preparation method of zirconia ceramic fiber, in particular to a preparation method of ultra-high temperature zirconia ceramic fiber, which belongs to the technical field of heat preservation and refractory materials. Background technique [0002] Zirconia has excellent physical and chemical properties such as high melting point (2715°C), low high-temperature vapor pressure, corrosion resistance, and oxidation resistance. It is widely used as thermal insulation and refractory materials in high-temperature fields above 1700°C. At present, it is generally used in the form of hollow spherical bricks. use. Compared with crystal fibers, hollow ball bricks have larger thermal conductivity, higher heat capacity, and poor thermal insulation effect. However, the maximum service temperature of traditional mullite crystal fiber and alumina crystal fiber is only 1400°C and 1600°C, which cannot be used in a high temperature environment ...

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): D01F9/08C04B35/48C04B35/622
Inventor 王伟
Owner 宜兴市恒祥耐火材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap