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Low-temperature ceramic-firing high-density alumina ceramic granulation powder and preparation method thereof

An alumina ceramic and high-density technology, which is applied in the field of alumina ceramics, can solve the problems such as the detailed technical scheme of low-temperature porcelain-forming and high-density, the reduction of the ceramic-forming temperature, and the increase of the ceramic-forming temperature, so as to achieve easy crushing and high The density of ceramics and the effect of low temperature sintering

Active Publication Date: 2013-01-02
JIYUAN GENGXIN PORCELAIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the field of alumina ceramics, there are many studies on reducing the firing temperature and increasing the density of porcelain; The influence of factors such as granulation process control often makes the temperature of porcelain formation increase and the density of ceramics decreases
There is no public report on how to prepare alumina ceramic granulation powder so that the temperature of porcelain formation can be reduced and the density can be increased.
[0003] There is a patent on the preparation of alumina ceramic granulation powder, publication number CN101407410A, which relates to a preparation method of alumina ceramic granulation powder for sealing rings. In the preparation process, there is no patent for low-temperature porcelain formation and high density. Detailed technical plan

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A low-temperature porcelain-forming high-density alumina ceramic granulation powder, (1) is based on 84.0kg of α-Al 2 o 3 , 11.0kg of kaolin, 1.32kg of CaCO 3 , 2.56kg of MgCO 3 , 0.92kg of ZnO, 0.2kg of Li 2 CO 3 (2) use 0.85kg of ammonium polyacrylate as dispersant; (3) use 0.6kg of polyvinyl alcohol, 0.3kg of dextrin as solute and a concentration of 10wt% aqueous solution mixture as Composite adhesive; (4) use 0.5kg emulsified paraffin as the release agent; (5) use 55kg of water as the dispersion medium, and make the above-mentioned components into low-temperature porcelain-forming high-density alumina ceramics after ball milling grain powder.

[0022] The α-Al 2 o 3 The weight content of aluminum oxide in it is ≥99.7%, the primary grain size is <1.0 μm, and the α-phase conversion rate is ≥96%.

[0023] A method for preparing low-temperature porcelain-forming high-density alumina ceramic granulated powder, the preparation method of which is as follows:

[00...

Embodiment 2

[0029] A low-temperature porcelain-forming high-density alumina ceramic granulation powder, (1) is based on 98.22kg of α-Al 2 o 3 , 0.8kg of La 2 o 3 , 0.5kg of Y 2 o 3 , 0.24kg of ZrO 2 , 0.24kg of SrCO 3 (2) use 0.9kg ammonium polyacrylate as dispersant; (3) use 0.7kg polyvinyl alcohol, 0.4kg sodium carboxymethyl cellulose, 0.2kg dextrin as solute and Concentration is 10wt% aqueous solution mixture as composite adhesive; (4) is to use 0.3kg emulsified paraffin as release agent; (5) is to use 55kg of water as dispersion medium, make the above-mentioned components through ball milling Porcelain-forming high-density alumina ceramic granulation powder.

[0030] The α-Al 2 o3 The weight content of aluminum oxide in it is ≥99.7%, the primary grain size is <1.0 μm, and the α-phase conversion rate is ≥96%.

[0031] A method for preparing low-temperature porcelain-forming high-density alumina ceramic granulated powder, the preparation method of which is as follows:

[0032]...

Embodiment 3

[0037] A low-temperature porcelain-forming high-density alumina ceramic granulation powder, (1) is based on 99kg of α-Al 2 o 3 , 0.5kg of kaolin, 0.1kg of La 2 o 3 , 0.2kg of Y 2 o 3 , 0.2kg Nb 2 o 5 (2) use 0.7kg ammonium polyacrylate as dispersant; (3) use 0.8kg polyvinyl alcohol, 0.5kg sodium carboxymethyl cellulose as solute and concentration of 10wt% The aqueous solution mixture is used as a composite adhesive; (4) 0.7kg of emulsified paraffin is used as a release agent; (5) 50kg of water is used as a dispersion medium, and the above-mentioned components are ball-milled to make low-temperature porcelain Density alumina ceramic granulation powder.

[0038] The α-Al 2 o 3 The weight content of aluminum oxide in it is ≥99.7%, the primary grain size is <1.0 μm, and the α-phase conversion rate is ≥96%.

[0039] A method for preparing low-temperature porcelain-forming high-density alumina ceramic granulated powder, the preparation method of which is as follows:

[00...

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Abstract

The invention belongs to the field of alumina ceramics, and in particular relates to a low-temperature ceramic-firing high-density alumina ceramic granulation powder and a preparation method thereof. The preparation method comprises the following steps of: (1) using the mixture of alpha-Al2O3, talcum, kaolin, BaCO3, CaCO3, MgCO3, bentonite, SiO2, Y2O3, La2O3, ZrO2, SrCO3, ZnO, LiCO3 and Nb2O5 as a ceramic material; (2) using ammonium polyacrylate as a dispersant; (3) using an aqueous solution mixture using two or three of PVA (Polyvinyl Alcohol), CMC (Carboxymethyl Cellulose) and dextrin as solutes as a composite binding agent; (4) using emulsified paraffin as a mould releasing agent; and (5) using water as a solvent, and carrying out ball milling on all components to prepare the low-temperature ceramic-firing high-density alumina ceramic granulation powder. The invention has the advantages of simple process, easy operation and high preparation efficiency.

Description

technical field [0001] The invention belongs to the technical field of alumina ceramics, and in particular relates to a low-temperature porcelain-forming high-density alumina ceramic granulation powder and a preparation method thereof. Background technique [0002] In the field of alumina ceramics, there are many studies on reducing the firing temperature and increasing the density of porcelain; The influence of factors such as granulation process control often makes the temperature of porcelain formation increase and the density of ceramics decreases. There is no public report on how to prepare alumina ceramic granulated powder so that the temperature of porcelain formation can be reduced and the density can be increased. [0003] There is a patent on the preparation of alumina ceramic granulation powder, publication number CN101407410A, which relates to a preparation method of alumina ceramic granulation powder for sealing rings. In the preparation process, there is no pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/10
Inventor 张光明张本清
Owner JIYUAN GENGXIN PORCELAIN
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