Ceramic glaze and preparation method thereof

A ceramic glaze and glaze technology, applied in the field of high-performance ceramic glaze and its preparation, can solve the problems of lowering the initial melting temperature of the glaze, pinholes in the glaze surface, and lower product quality, so as to achieve lower melting temperature and smooth surface , the effect of increasing liquidity

Active Publication Date: 2017-12-01
DONGGUAN CITY WONDERFUL CERAMICS IND PARK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The low gloss of the matte glaze surface is generally achieved by adjusting the content of alumina. To achieve ultra-low gloss (3-10°) of the glaze, it is necessary to introduce a large amount of alumina, but the content of alumina is too high. When it is high, it will often lead to rough glaze surface and poor hand feeling. It is difficult to ensure good glaze smoothness while achieving ultra-low gloss with the current glaze preparation technology
[0004] For one-time fast-fired bright glaze stoneware tiles, in order to obtain a super

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1: A high-performance matte glaze and its preparation method

[0032] The mineral raw material composition of the ceramic glaze of this embodiment is (weight content): zinc oxide 4%, barium carbonate 10%, feldspar 40%, alumina 10%, talc 5%, calcite 8%, kaolin 8%, silicon Zirconium acid 15%.

[0033] The corresponding chemical composition of the glaze is: SiO 2 49.4%, Al 2 O 3 14.6%, CaO 5.4%, MgO 1.8%, BaO8.3%, ZnO 4.3%, K 2 O 4%, Na 2 O 1.7%, ZrO 2 10.3%, Fe 2 O 3 0.1%, TiO 2 0.1%.

[0034] The specific preparation steps are:

[0035] (1) Weigh the mineral raw materials according to the above formula, add water ball mill (the weight ratio of material: water is 100:45) for 8 hours to obtain a glaze slurry with a 325 mesh sieve remaining 0.3%. After removing iron from the glaze slurry and sieving, spray drying is used to obtain a powder with a moisture content of about 7%, and the powder is conveyed to a press and pressed into shape;

[0036] (2) The compressed raw ...

Example Embodiment

[0042] Example 2: A high-performance matte glaze and its preparation method

[0043] The mineral raw material composition of the ceramic glaze of this embodiment is (weight content): zinc oxide 3%, barium carbonate 8%, feldspar 40%, alumina 6%, talc 5%, calcite 8%, quartz 10%, kaolin 6%, zirconium silicate 14%.

[0044] The corresponding chemical composition of the glaze is: SiO 2 55.8%, Al 2 O 3 11.9%, CaO 5.4%, MgO 1.8%, BaO6.6%, ZnO 3.2%, K 2 O 3.8%, Na 2 O 1.9%, ZrO 2 9.4%, Fe 2 O 3 0.1%, TiO 2 0.1%.

[0045] The specific preparation steps are:

[0046] (1) Weigh the mineral raw materials according to the above formula, add water ball mill (material: water = 100:60) for 8 hours to obtain a glaze slurry with a 325 mesh sieve remaining 0.3%. After removing iron from the glaze slurry, spray drying is used to obtain a powder with a moisture content of about 7%;

[0047] (2) The powder is conveyed to the press and pressed into shape;

[0048] (3) The compressed raw materials are fi...

Example Embodiment

[0052] Example 3: A high-performance bright glaze and its preparation method

[0053] The mineral composition of the glaze (weight content): zinc oxide 3%, barium carbonate 6%, feldspar 30%, talc 8%, calcite 10%, quartz 18%, kaolin 6%, zirconium silicate 15%, low temperature melting Block 4%.

[0054] The corresponding chemical composition of the glaze is: SiO 2 57.7%, Al 2 O 3 8.4%, B 2 O 3 1.5%, CaO 6.2%, MgO2.5%, BaO 5.0%, ZnO 3.7%, K 2 O 3.6%, Na 2 O 1.0%, ZrO 2 10.2%, Fe 2 O 3 0.1%, TiO 2 0.1%.

[0055] The chemical composition of the low temperature frit is: SiO 2 49.8%, Al 2 O 3 10.6%, B 2 O 3 3.4%, CaO 7.5%, MgO 3.4%, BaO 9.6%, ZnO 9.0%, K 2 O 4.4%, Na 2 O 2.3%.

[0056] The specific preparation steps are:

[0057] (1) Weigh the other raw materials except the low-temperature frit in the above formula, and add water ball mill (material: water = 100:45) for 8 hours to obtain a glaze slurry with a 325 mesh sieve remaining 0.3%. After removing iron from the glaze slurry, s...

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Abstract

The invention discloses ceramic glaze prepared from the following components in weight percentages: 40 to 80% of SiO2, 8 to 20% of Al2O3, 0 to 5% of B2O3, 3 to 13% of CaO, 1 to 6% of MgO, 1 to 10% of BaO, 0 to 5% of ZnO, 1 to 4% of K2O, 1 to 4% of Na2O, 5 to 13% of ZrO2, 0 to 0.5% of Fe2O3, and 0 to 0.5% of TiO2. The invention also discloses a preparation method of the ceramic glaze. In the preparation method of the invention, some raw materials in the glaze formula are calcined at high temperature in advance, which helps to reduce defects such as bubbles and pinholes on the glaze and improves the quality of a product, meanwhile, the melting temperature of the glaze is properly reduced, the fluidity of a glaze melt at the high temperature is increased, and a flat, fine and smooth surface can be easily obtained. By adoption of the preparation method of the invention, the matte glaze with good hand feel and low glossiness can be obtained, and the high gloss glaze with a smooth surface and without pinholes or bubbles can also be obtained, so as to obtain the ceramic product with more excellent performance.

Description

technical field [0001] The invention relates to the field of ceramic preparation, in particular to a high-performance ceramic glaze and a preparation method thereof. Background technique [0002] The glaze layer on the ceramic surface can not only have a good decorative effect, but also improve the surface properties of the body and the performance of the product. Therefore, high-performance glazes can greatly increase the added value of the product. [0003] There are many types of ceramic glazes, which can be divided into matte glazes and bright glazes according to the glossiness. In order to reflect the vicissitudes of the years and the heaviness of history, a layer of matte glaze is usually applied to the surface of the antique brick. The low gloss of the matte glaze surface is generally achieved by adjusting the content of alumina. To achieve ultra-low gloss (3-10°) of the glaze, it is necessary to introduce a large amount of alumina, but the content of alumina is too ...

Claims

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Application Information

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IPC IPC(8): C03C8/20C03C8/00
CPCC03C8/00C03C8/20
Inventor 王少华沈荣伟肖惠银李小女刘学斌
Owner DONGGUAN CITY WONDERFUL CERAMICS IND PARK
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