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Anti-bubble defect lead-free glaze

An anti-bubble and lead-free glaze technology, applied in the field of lead-free glaze, can solve problems such as bubble defects and reduce the quality of ceramic preparation, and achieve the effects of reducing bubble defects, inhibiting polymerization and growth, and improving quality

Inactive Publication Date: 2018-11-06
界首市伟盛古窑彩陶制作发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, bubble defects often appear in lead-free glazes, and the lead-free glazes used in the prior art are more prone to bubble defects than lead-containing glazes, thereby reducing the quality of ceramic preparation

Method used

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  • Anti-bubble defect lead-free glaze

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A lead-free glaze for preventing bubble defects, said lead-free glaze for preventing bubble defects contains 5.8% active sericite by mass.

[0021] Further, the preparation method of the active sericite is:

[0022] (1) Grinding the sericite and passing through a 1800 mesh sieve to obtain sericite powder;

[0023] (2) Heat 200g of the above-obtained sericite powder: 300mL of weak base solution with a mass fraction of 2.5% in a water bath to 95°C, then add thiourea with a mass fraction of 1.8% of the sericite powder, and stir at a speed of 500r / min 2 hours, then filter and dry to constant weight;

[0024] (3) Dissolve potassium phosphate in deionized water to prepare a potassium phosphate solution with a mass concentration of 25.8%. Heat the potassium phosphate solution to 58°C and keep it warm for 15 minutes. Sodium 3-chloro-2-hydroxypropanesulfonate, continue to heat to 72°C, stir at 500r / min for 2 hours, then ultrasonically treat for 2min, then cool to 12°C for crys...

Embodiment 2

[0031] A lead-free glaze for preventing bubble defects, the said lead-free glaze for preventing bubble defects contains 10.5% active sericite by mass.

[0032] Further, the preparation method of the active sericite is:

[0033] (1) Grinding the sericite and passing through a 1800 mesh sieve to obtain sericite powder;

[0034] (2) Heat the sericite powder obtained above to 230g: 300mL of weak base solution with a mass fraction of 2.5% in a water bath to 95°C, then add thiourea with 1.8% mass of sericite powder, and stir at a speed of 500r / min 2 hours, then filter and dry to constant weight;

[0035] (3) Dissolve potassium phosphate in deionized water to prepare a potassium phosphate solution with a mass concentration of 25.8%. Heat the potassium phosphate solution to 58°C and keep it warm for 15 minutes. Sodium 3-chloro-2-hydroxypropanesulfonate, continue to heat to 72°C, stir at 500r / min for 2 hours, then ultrasonically treat for 2min, then cool to 12°C for crystallization, ...

Embodiment 3

[0042] A lead-free glaze for preventing bubble defects, the said lead-free glaze for preventing bubble defects contains 8.5% active sericite by mass.

[0043] Further, the preparation method of the active sericite is:

[0044] (1) Grinding the sericite and passing through a 1800 mesh sieve to obtain sericite powder;

[0045] (2) Put 210g of the sericite powder obtained above: 300mL of a weak base solution with a mass fraction of 2.5%, heat it in a water bath to 95°C, then add thiourea with a mass fraction of 1.8% of the sericite powder, and stir at a speed of 500r / min 2 hours, then filter and dry to constant weight;

[0046](3) Dissolve potassium phosphate in deionized water to prepare a potassium phosphate solution with a mass concentration of 25.8%. Heat the potassium phosphate solution to 58°C and keep it warm for 15 minutes. Sodium 3-chloro-2-hydroxypropanesulfonate, continue to heat to 72°C, stir at 500r / min for 2 hours, then ultrasonically treat for 2min, then cool to ...

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Abstract

The invention discloses anti-bubble defect lead-free glaze, and relates to the technical field of inorganic non-metallic materials (ceramic). The anti-bubble defect lead-free glaze contains 5.8-10.5%of active sericite by mass. After firing of the prepared lead-free glaze, bubble defects in a glaze surface are greatly reduced, so that the quality of the glaze surface is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of inorganic non-metallic materials (ceramics), and in particular relates to a lead-free glaze for preventing bubble defects. Background technique [0002] Colored glaze decoration of ceramic products has a long history, and the production technology is also very mature. High-temperature ceramic color glaze products are mostly stoneware, using raw material glaze and one-time firing process, and the firing temperature is mostly 1180-1250°C; low-temperature ceramic color glaze products are mostly fine pottery (including Baiyun porcelain), using fritted glaze, The two-firing process of "high-temperature biscuit firing and low-temperature glaze firing" is adopted, and the glaze firing temperature is generally in the range of 1000-1080°C; medium-temperature ceramic color glaze products are mostly high-grade porcelain, using fritted glaze, and adopting two-firing process, Glaze firing temperature is generally 112...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/00
CPCC03C8/00
Inventor 邢淑芹
Owner 界首市伟盛古窑彩陶制作发展有限公司
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