A kind of preparation method of zirconia ceramic fiberboard

A technology for zirconia ceramics and fiberboard, which is applied in the field of inorganic refractory materials, can solve the problems of difficult preparation method of zirconia fiberboard and difficult preparation technology of zirconia fiber, and achieves the effects of low preparation cost, small linear shrinkage and uniform structure

Active Publication Date: 2016-08-31
宜兴市恒祥耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difficulty in the preparation technology of zirconia fiber itself, there are great difficulties in the preparation method of zirconia fiberboard

Method used

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  • A kind of preparation method of zirconia ceramic fiberboard
  • A kind of preparation method of zirconia ceramic fiberboard
  • A kind of preparation method of zirconia ceramic fiberboard

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation method of the zirconia ceramic fiberboard of the present invention is to adopt the following steps:

[0030] (1) Preparation of fully stable cubic zirconia fibers:

[0031] A Weigh yttrium nitrate and zirconium carbonate according to the molar ratio of yttrium oxide: zirconium oxide = 10%: 90% and dissolve them in deionized water. The amount of water is 2-5 times the total mass of yttrium nitrate and zirconium carbonate; : Nitric acid molar ratio = 1:4-5 Measure nitric acid, and add nitric acid to the mixed solution of zirconium carbonate and yttrium nitrate at room temperature (15°C-45°C) under stirring conditions, and continue to stir for 1~ After 2 hours, a colorless and transparent reaction solution was obtained, which was a composite polymerization solution containing yttrium and zirconium ions.

[0032] The viscosity of the yttrium-zirconium composite sol spinning solution obtained by concentration under reduced pressure is in the range of 2 to 25...

Embodiment 2

[0038] As described in Example 1, the difference is that 100 grams of fully stable cubic-phase zirconia fibers are chopped to 1 mm with a shredder, and then placed in a slurry tank, and 20 grams of finely crushed zirconia ceramic fibers are added. ZrO 2 The performance of fiberboard is as follows: bulk density 350 kg / m 3 , the thermal conductivity is 0.21W / mK, the shrinkage rate is 0.03% under the condition of 1650℃×24h, and 0.15% under the condition of 2100℃×10h.

Embodiment 3

[0040] The same as described in Example 1, except that 100 grams of fully stable cubic zirconia fibers were chopped to 2 mm with a shredder, then placed in the slurry tank, and 50 grams of finely divided zirconia ceramic fibers were added. Made with ZrO 2Fiberboard properties are as follows: bulk density 400 kg / m 3 , the thermal conductivity is 0.28W / mK, the shrinkage rate is 0.02% under the condition of 1650℃×24h, and 0.14% under the condition of 2100℃×10h.

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Abstract

The invention belongs to the field of inorganic refractory materials and relates to a method for preparing a refractory thermal insulation fiber board based on superhigh temperature zirconia ceramic fibers. The method comprises the following steps: by taking the superhigh temperature zirconia ceramic fibers as a base phase, by taking fine zirconia ceramic fibers as a filler, adding an organic binding agent and an inorganic binding agent for preparing slurry, and performing suction filtration molding and drying to prepare the zirconia ceramic fiber board. The preparation process is simple, and the prepared fiber board is uniform and single in component and high-temperature-resistant and can be used in an environment at the temperature below 2250 DEG C for a long time.

Description

technical field [0001] The invention relates to a method for preparing a fire-resistant and heat-preserving fiberboard based on ultra-high-temperature zirconia fibers, and belongs to the field of inorganic refractory materials. Background technique [0002] Energy is an important material basis for the survival and development of human society. Throughout the history of the development of human society, every major progress of human civilization is accompanied by the improvement and replacement of energy. The development and utilization of energy has greatly promoted the development of the world economy and human society. Over the past 100 years, developed countries have completed industrialization successively, consuming a large amount of natural resources on the earth, especially energy resources. At present, some developing countries are entering the stage of industrialization, and the increase in energy consumption is an objective necessity of economic and social devel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/04C04B14/38
Inventor 王伟
Owner 宜兴市恒祥耐火材料有限公司
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