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High-temperature reparation glaze composition and process for preparing same and application thereof

A technology for repairing glaze and composition, applied in the material field of the ceramic field, can solve the problems of no silky luster, rough surface, peeling, etc., achieve smooth glaze without cracks and peeling, and prevent the secondary firing temperature from being too high. The effect of high and low firing temperature

Inactive Publication Date: 2006-12-27
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is to provide a high-temperature repair glaze composition and its preparation method and application, so as to overcome the problem that in the prior art, only organic materials are used for normal temperature repair, which does not have the unique silky luster of ceramic glaze, and does not Acid and alkali resistance, resulting in color difference between the repaired surface and the original surface of ceramic products, which cannot improve the product grade. After long-term use, the aging of the repaired part will cause the surface to become rough, the color difference will become larger, or the shortage of peeling off

Method used

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  • High-temperature reparation glaze composition and process for preparing same and application thereof
  • High-temperature reparation glaze composition and process for preparing same and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Preparation of the repair glaze composition: the repair glaze composition was prepared by wet ball milling.

[0065] The repair glaze is composed of the base glaze of the original ceramic and the transparent frit. According to the components and contents shown in Table 1 and Table 2, the raw material mixtures A1-A5 of the basic glaze and transparent frit were prepared respectively, and water and electrolyte were added: sodium silicate water glass 0.03-0.05% and organic polymer diluent P132 0.35- 0.5%, into a ball mill for ball milling until the specific gravity is 1800-1850, preferably 1830-1840, and the particle weight is less than 1.5% with a fineness of 32 μm or more.

[0066] repair glaze

Raw material%

SiO 2

al 2 o 3

Fe 2 o 3

RO

R 2 o

ZrO 2

BaO

B 2 o 3

Burn out

total

base glaze

52.8

11.0

0.1

8

4.3

7.6

5.4

10.8...

Embodiment 2

[0073] Glazing process and firing process:

[0074] (3) The repair glaze is sprayed with a spray gun (adjustable pressure of 0-10bar). The performance parameters of the glaze slurry are: Brookfield viscosity CP = 1800-1900, and yield value = 35 ± 3, using organic polymer liquid Quick desiccant ZS adjustment;

[0075] (4) glaze spraying method;

[0076] (5) Firing process: for repaired ceramic products, the maximum firing temperature is 1180-1200°C, and after 10-20 hours of firing, the maximum firing temperature is controlled to be lower than the maximum firing temperature of the base glaze by 30-50°C. That is, if the firing temperature of the base glaze is 1210-1230°C, the maximum firing temperature of the repair glaze is 1160-1200°C. For example: if the firing temperature of the base glaze is 1221°C, the firing temperature for repairing is 1180°C.

[0077] temperature

specific gravity

Fineness (32μm)

Brookfield viscosity CP

Yield value

Glazing...

Embodiment 3

[0081] Using the thermal dilatometer method, measure the expansion curves of the high-temperature repair glaze and the basic glaze on a thermal dilatometer (model Dil804L), the results are as follows figure 1 shown. The data analysis results show that the ratio range of the expansion coefficient of the high-temperature repair glaze composition to the base glaze at a firing temperature of 120-830°C=the expansion coefficient of the repair glaze÷the expansion of the base glaze×100%=100%±13%.

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Abstract

The invention discloses a high-temperature mended enamel composition and preparing method and application, which comprises the following parts: 80-89% basic enamel and 11-20% transparent fused block, wherein the high-temperature mended enamel composition and basic enamel possess similar buckling curve under sintering temperature.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials, and more specifically relates to materials applied in the field of ceramics. Background technique [0002] During the production, storage and transportation of architectural porcelain such as ceramic sanitary ware and domestic porcelain such as art decorative porcelain, it is inevitable to cause small defects in the ceramic enamel layer, such as depressions, blisters, scratches, gaps or cracks. In response to these defects, some people have studied the use of other materials, such as: polymer organic materials-epoxy repair materials with ceramic powder or alumina as fillers, which are repaired by various methods and means at room temperature to achieve concealment. purpose of defects. However, because these materials do not have the silky luster unique to ceramic glazes, their colors are relatively limited, and they are not resistant to acids and alkalis and high temperatures (gen...

Claims

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Application Information

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IPC IPC(8): C04B41/86C03C8/02C03C8/14
CPCC03C3/091C03C3/093
Inventor 张荔荔张永明
Owner SHANGHAI NORMAL UNIVERSITY
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