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Microcrystal-reinforced transparent leadless fritted glaze and preparation method thereof

A lead-free frit and transparent technology is applied in the field of ceramic glaze processing, which can solve the problems of inability to meet the hardness performance of the glaze surface of western tableware, insufficient thermal stability and high glaze firing temperature, and achieve good glaze quality and glaze surface. The effect of good gloss and high transparency

Inactive Publication Date: 2013-03-27
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, some enterprises have been conducting research on lead-free frits and achieved some results, but there are common problems such as high glaze firing temperature, low glaze hardness or poor gloss.
In particular, high-end daily-use ceramics represented by bone china generally have problems such as low glaze hardness and insufficient thermal stability in the secondary firing (low-temperature glaze firing) products, which cannot meet the requirements of western tableware for glaze hardness performance.

Method used

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  • Microcrystal-reinforced transparent leadless fritted glaze and preparation method thereof
  • Microcrystal-reinforced transparent leadless fritted glaze and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation method of microcrystalline reinforced transparent lead-free frit glaze comprises the following steps:

[0030] Microcrystalline reinforced transparent lead-free frit glaze, the following raw materials are weighed according to mass percentage: potassium feldspar 18.06%, borax 6.83%, talc 3.17%, boric acid 3.23%, lithium carbonate 2%, strontium carbonate 3.03%, calcium carbonate 15.92%, 7% zinc oxide, 4.53% barium carbonate, 4.18% aluminum hydroxide, 0.5% lanthanum oxide, 4.57% zirconium silicate, 28.42% quartz;

[0031] Mix the raw materials of each component evenly, melt in a frit furnace at a melting temperature of 1400°C for 180 minutes, and make a lead-free frit glaze after water quenching;

[0032] Using water as the medium, add 0.15% polyacrylamide of the quality of lead-free frit glaze, and ball-mill the lead-free frit glaze in a ball mill to make glaze slurry. )0.02~0.05%;

[0033] The glaze slurry is applied to the high-temperature biscuit-fire...

Embodiment 2

[0035] The preparation method of microcrystalline reinforced transparent lead-free frit glaze comprises the following steps:

[0036] Weigh the following raw materials according to mass percentage: potassium feldspar 20.06%, borax 5%, talc 3.17%, boric acid 8.97%, lithium carbonate 2%, strontium carbonate 3.03%, calcium carbonate 15.92%, zinc oxide 7%, barium carbonate 4.53%, aluminum hydroxide 1%, lanthanum oxide 0.5%, zirconium silicate 4.57%, quartz 24.25%;

[0037] Mix the raw materials of each component evenly, melt in a frit furnace at a melting temperature of 1450°C for 250 minutes, and obtain a frit after water quenching;

[0038] Using water as the medium, add 0.20% polyacrylamide of the quality of the lead-free frit glaze, and ball-mill the frit in a ball mill to make a glaze slurry.

[0039] The glaze slurry is applied to the high-temperature biscuit-fired bone china biscuit, and then fired to obtain the product. The glaze firing temperature is 1160°C. The glaze s...

Embodiment 3

[0041] The preparation method of microcrystalline reinforced transparent lead-free frit glaze comprises the following steps:

[0042] Weigh the following raw materials according to mass percentage: potassium feldspar 25.06%, borax 1%, talc 3.17%, boric acid 14.65%, lithium carbonate 6%, strontium carbonate 3.03%, calcium carbonate 3.86%, zinc oxide 7%, barium carbonate 4.53%, aluminum hydroxide 1%, lanthanum oxide 0.5%, zirconium silicate 6.84%, quartz 26.15%;

[0043] Mix the raw materials of each component evenly, melt them in a frit furnace at a melting temperature of 1450°C, and make a frit after water quenching;

[0044] Using water as the medium, add 0.25% polyacrylamide of lead-free frit glaze quality, and ball-mill the frit in a ball mill to make glaze slurry.

[0045]The glaze slurry is applied to the bone china biscuit that has been fired at high temperature, and then fired to obtain the product. The glaze firing temperature is 1180°C. The glaze surface of the obta...

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Abstract

The invention discloses a microcrystal-reinforced transparent leadless fritted glaze and a preparation method thereof, belonging to the field of ceramic glaze processing. The microcrystal-reinforced transparent leadless fritted glaze, prepared by the invention, comprises the chemical components in percentage by weight: 45.0-55.0% of SiO2, 5.0-7.0% of Al2O3, 0.1-0.2% of Fe2O3, 2.0-11.0% of CaO, 1.0-1.5% of MgO, 2.0-4.0% of K2O, 0.5-2.0% of Na2O, 0-3.0% of Li2O, 7.0-9.0% of ZnO, 3.0-5.0% of BaO, 2.0-2.6% of SrO, 5.0-10.0% of B2O3, 3.0-6.0% of ZrO2, and 0-1.0% of La2O3. The lead element in the fritted glaze is replaced with a composite solvent of alkali metal, alkaline-earth metal and a small amount of rare earth elements, the lead release is zero, thus the damage of the lead element in high-grade household porcelains represented by fine-bone china to a human body is thoroughly eliminated; and the prepared product is good in glaze glossiness and thermal stability, and high in transparency.

Description

technical field [0001] The invention belongs to the technical field of ceramic glaze processing, and relates to a microcrystal-reinforced transparent lead-free frit glaze and a preparation method thereof. Background technique [0002] High-grade daily-use fine porcelain represented by bone china, steatite porcelain, high-quartz porcelain, etc. are deeply loved by people for their beautiful appearance and good internal performance. These ceramics generally adopt the secondary firing process, that is, high-temperature biscuit firing and low-temperature glaze firing. [0003] As glazes for these materials, lead-containing frit glaze was mostly used in the past. Lead-containing frit glaze has the advantages of high gloss, low melting temperature, wide firing range, high refractive index, and low cost. Lead-containing low-temperature frit Glazes are widely used. However, lead-containing frit glazes have a certain amount of lead leaching. With the continuous improvement of peopl...

Claims

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Application Information

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IPC IPC(8): C04B41/86
Inventor 任强武秀兰陈娟妮杨元东孙志雄
Owner SHAANXI UNIV OF SCI & TECH
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