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Low-temperature bright red ceramic glaze and preparation method thereof

A ceramic glaze and red technology, which is applied in the field of low-temperature bright red ceramic glaze and its preparation, can solve the problems of unstable coloring effect, easy to be oxidized, poor temperature resistance, etc., and achieve simple glaze method, low cost, and improved glaze The effect of surface strength

Active Publication Date: 2015-10-07
LUOYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned problems such as poor temperature resistance, easy oxidation and unstable coloring effect of the existing bright red ceramic glaze, the present invention provides a low-temperature bright red ceramic glaze and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method for low-temperature bright red ceramic glaze, comprising the following steps:

[0024] 1) Take sodium silicate, dissolve it in water, and stir to obtain a saturated sodium silicate solution;

[0025] 2) Take concentrated hydrochloric acid, add water, and make it 5mol . L -1 hydrochloric acid solution;

[0026] 3) Add 1~2 drops of phenolphthalein solution to the saturated sodium silicate solution obtained in step 1), and then add the solution prepared in step 2) dropwise, stirring while dripping, stop dripping when the red color disappears. Add and continue to stir to obtain a uniform and transparent colloidal solution;

[0027] 4) Continue to slowly add the solution prepared in step 2) to step 3), stirring while dripping, until a white transparent gel is completely formed;

[0028] 5) Suction-filter the silicic acid gel obtained in step 4), wash the filter cake with water for 3 to 4 times, suction-filter, and dry at 50°C to obtain silicic acid x...

Embodiment 2

[0035] A preparation method for low-temperature bright red ceramic glaze, comprising the following steps:

[0036] 1) Take sodium silicate, dissolve it in water, and stir to obtain a saturated sodium silicate solution;

[0037] 2) Take concentrated sulfuric acid, add water, and make it 5mol . L -1 sulfuric acid solution;

[0038] 3) Add 1~2 drops of phenolphthalein solution to the saturated sodium silicate solution obtained in step 1), and then add the solution prepared in step 2) dropwise, stirring while dripping, stop dripping when the red color disappears. Add and continue to stir to obtain a uniform and transparent colloidal solution;

[0039] 4) Continue to slowly add the solution prepared in step 2) to step 3), stirring while dripping, until a white transparent gel is completely formed;

[0040] 5) Suction-filter the silicic acid gel obtained in step 4), wash the filter cake with water for 3 to 4 times, suction-filter, and dry at 60°C to obtain silicic acid xerogel; ...

Embodiment 3

[0047] A preparation method for low-temperature bright red ceramic glaze, comprising the following steps:

[0048] 1) Take sodium silicate, dissolve it in water, and stir to obtain a saturated sodium silicate solution;

[0049] 2) Take ammonium chloride, add water, and make it 5mol . L -1 ammonium chloride solution;

[0050] 3) Add 1~2 drops of phenolphthalein solution to the saturated sodium silicate solution obtained in step 1), and then add the solution prepared in step 2) dropwise, stirring while dripping, stop dripping when the red color disappears. Add and continue to stir to obtain a uniform and transparent colloidal solution;

[0051] 4) Continue to slowly add the solution prepared in step 2) to step 3), stirring while dripping, until a white transparent gel is completely formed;

[0052] 5) Suction-filter the silicic acid gel obtained in step 4), wash the filter cake with water for 3 to 4 times, suction-filter, and dry at 70°C to obtain silicic acid xerogel;

[0...

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Abstract

The invention relates to low-temperature bright red ceramic glaze and a preparation method thereof. The glaze comprises the main components of, by weight, 50-60 parts of PbO, 15-30 parts of SiO2, 10-20 parts of B2O3, 1-5 parts of Na2O, 1-5 parts of ZnO, 0.5-1.5 parts of CaO and 5-6 parts of inclusion red; the binder comprises red lead powder, quartz powder, sodium borate, boracic acid, calcium carbonate, zinc oxide and sodium silicate, the inclusion red is taken as a coloring agent, and the non-frit low-temperature bright red ceramic glaze is prepared. The glaze overcomes the defects that the preparation technology of frit glaze is complex, the melting temperature is high, the appearance and the performance of the glaze are unstable, and the glaze have to be fired in a reducing atmosphere. The low-temperature bright red ceramic glaze has the advantages that the color tone is pure, the glaze face is smooth and level, the glossiness is high, the glazing method is simple, and the sintering temperature range is wide. The glaze is ideal glaze for firing high-quality ceramic products.

Description

technical field [0001] The invention relates to the technical field of preparation of ceramic glazes, in particular to a low-temperature bright red ceramic glaze and a preparation method thereof. Background technique [0002] In recent years, scholars at home and abroad have done a lot of research work on bright red ceramic pigments. The results show that among all kinds of pigments that can produce red tones, only cadmium sulfur selenide can present pure bright red. The preparation of a bright red glaze with high temperature resistance and good coloring effect is one of the hot topics in the research of ceramic decoration. Chinese and foreign ceramic experts have invested a lot of manpower, material resources, and financial resources in an attempt to burn out the coveted bright red ceramic utensils, but they have not been particularly successful. The reason is that the bright red ceramic glaze prepared by cadmium sulfur selenide as a colorant has poor temperature resistan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/10
Inventor 李俊霞屈文俊杜慧龙杨晓萌刘献明杜仲祥
Owner LUOYANG NORMAL UNIV
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