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Self-releasing glaze ceramic and preparation method thereof

A technology of self-releasing glaze and ceramics, which is applied in the production of ceramic materials, clay products, and other household utensils. It can solve the problems of narrow firing temperature range and easy deformation, and achieve easy deformation, improve gloss and strength, and ensure non-distorting effect

Active Publication Date: 2020-10-27
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome defects such as easy deformation and narrow firing temperature range of self-releasing glaze ceramics in the prior art, thereby providing a self-releasing glaze ceramic and its preparation method

Method used

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  • Self-releasing glaze ceramic and preparation method thereof
  • Self-releasing glaze ceramic and preparation method thereof

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Embodiment 1

[0047]The present embodiment provides a kind of self-releasing glaze ceramics, its raw material comprises 9.38kg body base material, 0.45kg glaze accelerator and 0.17kg sodium hydroxide;

[0048] The body base material includes 1.8kg Guangdong washed mud, 2.1kg Yunnan kaolin, 0.6kg porcelain stone, 0.8kg limestone, 0.5kg black talc, 0.12kg refined white bentonite, 2.58kg quartz, 1.3kg orthoclase, 0.12kg alumina micropowder , 0.08kg zirconia micropowder; among them, the fineness of alumina micropowder and zirconia micropowder are both 0.5-6μm, D90≤6μm;

[0049] The glaze accelerator is 0.24kg calcium borosilicate frit and 0.21kg lithium china stone, the fineness is 0.5-3μm, D90≤3μm.

[0050] The preparation method of above-mentioned self-releasing glaze ceramics comprises the following steps:

[0051] After mixing the raw materials of the green body base material, add water to mix to obtain the ingredients, the mass fraction of the ingredients is 70%, and after 16 hours of bal...

Embodiment 2

[0053] This embodiment provides a kind of self-releasing glaze ceramics, its raw material comprises 9.45kg body base material, 0.48kg glaze accelerator, 0.04kg potassium hydroxide and 0.03kg boric acid;

[0054] The green body base material includes 1.6kg Guangdong washed mud, 2.2kg Yunnan kaolin, 0.8kg porcelain stone, 0.85kg limestone, 0.4kg black talc, 0.11kg refined white bentonite, 2.7kg quartz, 1.2kg orthoclase, 0.8kg alumina micropowder , 0.06kg zirconia micropowder; among them, the fineness of alumina micropowder and zirconia micropowder are both 0.5-6μm, D90≤6μm;

[0055] The glaze accelerator is 0.28kg calcium borosilicate frit and 0.2kg lithium china stone, the fineness is 0.5-3μm, D90≤3μm.

[0056] The preparation method of above-mentioned self-releasing glaze ceramics comprises the following steps:

[0057] After mixing the raw materials of the green body base material, add water and mix to obtain the ingredients, the mass fraction of the ingredients is 60%, and ...

Embodiment 3

[0059] The present embodiment provides a kind of self-releasing glaze ceramics, and its raw material comprises 9.6kg body base material, 0.32kg glaze accelerator and 0.08kg sodium hydroxide;

[0060] The green body base material includes 1.65kg Guangdong washed mud, 2.3kg Yunnan kaolin, 0.65kg porcelain stone, 0.8kg limestone, 0.4kg black talc, 0.15kg refined white bentonite, 2.68kg quartz, 1.1kg orthoclase, 0.15kg alumina micropowder , 0.12kg zirconia micropowder; among them, the fineness of alumina micropowder and zirconia micropowder are both 0.5-6μm, D90≤6μm;

[0061] The glaze accelerator is 0.23kg calcium borosilicate frit and 0.09kg lithium china stone, the fineness is 0.5-3μm, D90≤3μm.

[0062] The preparation method of above-mentioned self-releasing glaze ceramics comprises the following steps:

[0063] After mixing the raw materials of the green body base material, add water to mix to obtain the ingredients, the mass fraction of the ingredients is 70%, and after 16 ...

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Abstract

The invention belongs to the technical field of ceramic preparation, and particularly relates to self-releasing glaze ceramic and a preparation method thereof. Raw materials of the self-releasing glaze ceramic comprise 92-97 parts of a green body base material, 2-5 parts of a glaze layer accelerant and 0.5-2.5 parts of a glaze layer activating agent. The glaze layer accelerant comprises at least one of borocalcite, calcium borosilicate frit, lithium feldspar and lithium chinastone, wherein the fineness of the glaze layer accelerant is 0.5-3 [mu]m, and D90 is less than or equal to 3 [mu]m; theglaze layer accelerant comprises at least one of sodium hydroxide, potassium hydroxide and boric acid. The self-releasing glaze ceramic takes at least one of sodium hydroxide, potassium hydroxide andboric acid as a glaze layer activating agent, and is enriched on the surface of a green body by virtue of diffusion of water to the surface in the green body drying process, so that the formation of aglaze layer glass phase is promoted; at least one of the borocalcite, the calcium borosilicate frit, the lithium feldspar and the lithium chinastone serves as a glaze layer accelerant, it can be guaranteed that in the firing process, the alkali-rich liquor migrates to the surface of the green body, and formation of a glaze layer glass phase is promoted.

Description

technical field [0001] The invention belongs to the technical field of ceramic preparation, and in particular relates to a self-releasing glaze ceramic and a preparation method thereof. Background technique [0002] The traditional daily-use ceramic body needs to be glazed, that is, a layer of K is applied on the inner and outer surfaces of the green or biscuit body after molding. 2 O, Na 2 Glazes with high content of basic oxides such as O, CaO, MgO, etc., can be fired at a certain temperature to combine the glazes and melt on the surface of the green body to form a smooth glassy glaze layer, and the production automation is relatively poor. [0003] The self-release glaze ceramic body can achieve the effect of smooth and translucent glazed products without glazing. After the body is formed, the porcelain not only eliminates the glaze making and glazing process, but also releases the glaze from the body itself to cover the surface of the body during the firing process, ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13C04B33/24
CPCC04B33/13C04B33/24C04B2235/3208C04B2235/3418C04B2235/3472C04B2235/3217C04B2235/3244C04B2235/365C04B2235/3201C04B2235/3409Y02P40/60
Inventor 刘昆谭灵常启兵包启富周健儿
Owner JINGDEZHEN CERAMIC INSTITUTE
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