A method of firing photochromic Jun porcelain under oxidative atmosphere conditions

An oxidizing atmosphere and photochromic technology, applied in chemical instruments and methods, inorganic chemistry, silicon compounds, etc., can solve the problem that the color and shape changes of Jun porcelain cannot satisfy Jun porcelain lovers, and avoid pollution and energy. the wasteful effect of

Active Publication Date: 2019-11-19
XUCHANG UNIV
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  • Description
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AI Technical Summary

Problems solved by technology

[0006] In recent years, with the improvement of people's material living standards and the rapid development of science and technology, the changes in the color and shape of traditional Jun porcelain are far from meeting the requirements of Jun porcelain lovers.

Method used

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  • A method of firing photochromic Jun porcelain under oxidative atmosphere conditions
  • A method of firing photochromic Jun porcelain under oxidative atmosphere conditions
  • A method of firing photochromic Jun porcelain under oxidative atmosphere conditions

Examples

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Effect test

Embodiment 1

[0037] 1. Preparation of color-changing powder: The chemical formula is Ca2Nd8(SiO4)6O2 calcium neodymium silicon neodymium powder prepared by in-situ solid-state reaction method. Weigh calcium carbonate, neodymium oxide and silicon dioxide according to the stoichiometric ratio, put the weighed raw materials into an agate mortar, add a small amount of absolute ethanol, and grind clockwise and counterclockwise for 30 minutes to make them fully mixed Put it into a blast drying oven, set the temperature at 120°C, and dry for 3 hours; take out the dried powder, grind it again by the above method, and dry it for later use. Put the mixed raw materials into a corundum crucible and put them into a muffle furnace. The heating rate is 5°C / min, the sintering temperature is 1350°C, and the temperature is kept for 30 minutes. Then, the required color-changing silicon neodymium salt powder is prepared. The discoloration effect diagram of the discoloration calcium neodymium silicon neodymate...

Embodiment 2

[0041] 1. Preparation of color-changing powder: with embodiment 1.

[0042]2. Preparation steps of color-changing Jun porcelain: Add calcium neodymium silicon neodymium powder into the base glaze of Jun porcelain according to the mass ratio of 15% of the glaze, use a constant temperature heating magnetic stirrer, set the speed at 500r / min, and stir for 60 minutes. It is evenly distributed in the glaze; the uniformly mixed glaze is coated on the biscuit by dipping glaze; after the glaze is completed, it is dried naturally overnight to fully evaporate the water in the glaze layer; put it into the muffle furnace, set Set the heating rate at 3°C / min, glaze the firing temperature at 1280°C, keep it warm for 20 minutes, and then cool down with the furnace to obtain the color-changing Jun porcelain product. The discoloration effect of the color-changing Jun porcelain test piece prepared under this condition is shown in diagram 2-1 .

[0043] 3. Summary of this example: from diag...

Embodiment 3

[0045] 1. Preparation of color-changing powder: with embodiment 1.

[0046] 2. Preparation steps of color-changing Jun porcelain: add silicon neodymium salt powder into Jun porcelain base glaze according to the mass ratio of 25% of the glaze, use a constant temperature heating magnetic stirrer, set the speed at 500r / min, and stir for 60 minutes. It is evenly distributed in the glaze; the uniformly mixed glaze is coated on the biscuit by dipping glaze; after the glaze is completed, it is dried naturally overnight to fully evaporate the water in the glaze layer; put it into the muffle furnace, set Set the heating rate at 3°C / min, glaze the firing temperature at 1280°C, keep it warm for 20 minutes, and then cool down with the furnace to obtain the color-changing Jun porcelain product. The discoloration effect of the color-changing Jun porcelain prepared under this condition is shown in Figure 3-1 .

[0047] 3. Summary of this example: from Figure 3-1 It can be seen that the ...

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Abstract

The invention provides a method for firing photochromic jun porcelain under an oxidizing atmosphere condition. The method is characterized in that micro-nano materials are added to serve as additives, and the jun porcelain with the photochromic effect is fired in the oxidizing atmosphere at the condition of 1,260 DEG C to 1,300 DEG C. The micro-nano material additives are micro-nano silicate, and the mass of the micro-nano silicate is 5% to 30% of the mass of an enamel layer. The color-change micro-nano silicate is prepared with an in-situ solid-phase reaction method, the preparing temperature ranges from 1,300 DEG C to 1,400 DEG C, and the particle size of the micro-nano silicate ranges from 0.5 micrometer to 5 micrometers. The micro-nano silicate is neodymium silicate, and the chemical formula is M2Nd8(SiO4)6O2, wherein M is calcium elements or strontium elements or barium elements.

Description

[0001] field of invention [0002] The invention belongs to the field of silicate ceramics, and relates to a method for firing photochromic Jun porcelain under the condition of an oxidizing atmosphere. [0003] technical background [0004] As the first of the five famous porcelains in the Song Dynasty, Jun porcelain has excellent ornamental value and collection value. Its unique profound artistic expression forms such as "kiln change", "open piece" and "opalescence" were deeply loved by the court of the Song Dynasty. There is an old saying that "a family with a lot of money is not as good as a piece of Jun porcelain". However, since the demise of the Song Dynasty, the development of Jun porcelain has almost stagnated, and it was not until the Qing Dynasty that Jun porcelain was restored and re-entered people's vision. After the founding of new China, the Jun porcelain industry has developed vigorously; in recent years, Jun porcelain has been given out as a national gift as a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/86C01B33/20
Inventor 朱聪旭郑直陈志峰冯铭华李应洲王邓刘鹏徐辉
Owner XUCHANG UNIV
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