CN113105267B - Ceramic stained paper additive, ceramic stained paper, selenium-rich ceramic and preparation method - Google Patents
Ceramic stained paper additive, ceramic stained paper, selenium-rich ceramic and preparation method Download PDFInfo
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- CN113105267B CN113105267B CN202110397365.2A CN202110397365A CN113105267B CN 113105267 B CN113105267 B CN 113105267B CN 202110397365 A CN202110397365 A CN 202110397365A CN 113105267 B CN113105267 B CN 113105267B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5022—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with vitreous materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
- B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
- B44C1/17—Dry transfer
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
- C04B41/86—Glazes; Cold glazes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention provides a ceramic stained paper additive, ceramic stained paper, selenium-enriched ceramic and a preparation method thereof, wherein the ceramic stained paper additive comprises 25-30 parts by weight of selenium powder, 15-21 parts by weight of glass white, 27-35 parts by weight of snow white and 1-4 parts by weight of boric acid, the ceramic stained paper prepared by using the ceramic stained paper additive not only has high selenium content, but also obviously improves the stability of selenium, so that the selenium can be continuously and stably released, the effective period of the selenium-enriched ceramic is greatly prolonged and can be as long as 5 years, and the prepared ceramic appliance can gradually release selenium ions to be dissolved into water or food in contact with the selenium-enriched ceramic and then enter a human body, thereby achieving the purpose of supplementing selenium. And the produced ceramic has fine and smooth surface and beautiful patterns.
Description
Technical Field
The invention relates to the technical field of ceramic stained paper, and particularly relates to a ceramic stained paper additive, ceramic stained paper, selenium-rich ceramic and a preparation method thereof.
Background
Selenium is an indispensable trace element for maintaining the life activities of human bodies, and can maintain the normal functions of cells, improve the cardiovascular circulation and the renal function; can effectively prevent liver cancer; can regulate the absorption and consumption of vitamin A, C, E and K, and protect cell membrane in combination with vitamin E; can also regulate the blood sugar balance in the body, improve the diabetes symptom and inhibit the occurrence of diabetes, is very important for the health of the human body, and the continuous and proper selenium supplement is not only required for the physiological function of the human body, but also beneficial to the requirements of disease prevention and health care. The development and utilization of selenium-rich products become a technical problem to be solved urgently at present.
The selenium-rich (nutritious) ceramic is produced through special technological process and high temperature sintering into various kinds of ceramic utensil, such as tableware, wine set, coffee set, beverage packing utensil, etc. the ceramic utensil is contacted with food to release proper zero-valent organic selenium element continuously.
For example, chinese patent document CN105753453A discloses a selenium-rich ceramic patch and a method for preparing a selenium-rich ceramic, in which selenium powder and kaolin are mixed to prepare selenium soil, the selenium soil is poured into a vacuum pug mill to prepare ceramic mud, glaze water is added to prepare the selenium-rich ceramic patch, and the selenium-rich ceramic patch is fired to prepare a finished product after 4 temperature gradient control processes are performed for 8 hours. Moreover, the ceramic prepared by the method has rough surface and low aesthetic degree.
Disclosure of Invention
Therefore, the invention aims to overcome the defects of low selenium content, rough surface and low aesthetic degree of the selenium-rich ceramic utensil in the prior art, and provides a ceramic stained paper additive, ceramic stained paper, selenium-rich ceramic and a preparation method thereof.
Therefore, the invention provides the following technical scheme:
the invention provides a ceramic stained paper additive which comprises, by weight, 25-30 parts of selenium powder, 15-21 parts of glass white, 27-35 parts of snow white and 1-4 parts of boric acid.
Further, 18-25 parts by weight of negative ion powder is also included.
The coating further comprises 26-52 parts of auxiliary materials, and preferably, the auxiliary materials comprise 4-8 parts of silicon dioxide, 2-4 parts of spodumene and 20-40 parts of muyu stone powder in parts by weight.
Furthermore, the ceramic decal paper additive comprises, by weight,
25 parts of selenium powder, 25 parts of anion powder, 15 parts of glass white, 35 parts of snow white, 1 part of boric acid, 8 parts of silicon dioxide, 3 parts of spodumene and 22 parts of Muyu stone powder; or the like, or, alternatively,
30 parts of selenium powder, 18 parts of negative ion powder, 21 parts of glass white, 27 parts of snow white, 4 parts of boric acid, 4 parts of silicon dioxide, 2 parts of spodumene and 26 parts of Muyu stone powder; or the like, or, alternatively,
28 parts of selenium powder, 22 parts of anion powder, 18 parts of glass white powder, 32 parts of snow white powder, 3 parts of boric acid, 5 parts of silicon dioxide, 4 parts of spodumene and 40 parts of Muyu stone powder.
The invention provides a preparation method of a ceramic stained paper additive, which comprises the steps of weighing and mixing the raw materials according to the selected parts by weight.
Further, the method comprises the following steps:
(1) Uniformly mixing glass white powder and snow white powder to obtain a first mixture;
(2) Mixing the mixture I with selenium powder, or mixing the mixture I with a mixture II comprising the selenium powder and anion powder to obtain a mixture III;
(3) And (3) uniformly mixing the mixture III with boric acid, or uniformly mixing the mixture III with boric acid and auxiliary materials to obtain the ceramic stained paper additive.
The invention also provides ceramic stained paper, and the ceramic stained paper additive prepared by adopting any one of the ceramic stained paper additives or the preparation method is used for color matching.
In the color matching process, stained paper with the area of 24.62 square centimeters per sheet can be used, and stained paper with the area of 34.19 square centimeters per sheet can also be used. The amount of the ceramic decal additive contained in each piece of decal paper is 3-5g.
The invention also provides selenium-rich ceramic which comprises the ceramic decal paper.
Further, a binder is arranged between the ceramic and the ceramic decal paper, and preferably, the binder is at least one of oil glue and rubber powder.
The invention also provides a firing method of the selenium-rich ceramic, which comprises the steps of heating the ceramic to 90-105 ℃, stopping heating, keeping the temperature for 0.8-1.2h, continuing heating to 600-820 ℃, and cooling to obtain the selenium-rich ceramic.
Upon cooling below 100 ℃, the heating vessel can be opened and the ceramic rapidly cooled to room temperature.
The selenium-negative ceramic stained paper disclosed by the invention is wide in application, can be used for preparing ceramic water cups, soup bowls, coffee sets, tea sets and the like, and meets the diversified requirements of consumers.
The technical scheme of the invention has the following advantages:
1. the ceramic stained paper additive provided by the invention comprises the following raw materials in parts by weight: 25-30 parts of selenium powder, 15-21 parts of glass white, 27-35 parts of snow white and 1-4 parts of boric acid. By adopting the raw materials and limiting the using amount of the raw materials, the ceramic stained paper prepared by using the ceramic stained paper additive not only has high selenium content, but also obviously improves the stability of selenium, so that the selenium can be continuously and stably released, the effective period of the selenium-rich ceramic is greatly prolonged, and the selenium-rich ceramic can be as long as 5 years (the selenium content in a soaking solution obtained after soaking in 1000ml of boiled water for 1 hour is more than or equal to 200 microgram/L), and the prepared ceramic utensil can gradually release selenium ions to be dissolved in water or food in contact with the selenium-rich ceramic utensil, and then the selenium ions enter a human body to achieve the purpose of supplementing selenium. Moreover, the produced ceramic has fine surface and beautiful pattern.
2. The ceramic stained paper additive provided by the invention also comprises 18-25 parts by weight of anion powder, and not only selenium element but also anions can be released through the addition of the anion powder, so that the ceramic stained paper additive has higher practical value. The released negative ions can effectively eliminate free radicals in human bodies, make the free radicals nontoxic, effectively promote metabolism, improve physique, improve the immunocompetence of the human bodies and eliminate fatigue.
3. According to the ceramic stained paper additive provided by the invention, the fineness of the surface of the ceramic prepared by the ceramic stained paper additive can be further improved by adding auxiliary materials and limiting the raw materials and the dosage thereof in the auxiliary materials. In particular, the ceramic adopts auxiliary materials comprising 4-8 parts of silicon dioxide, 2-4 parts of spodumene and 20-40 parts of Muyu stone powder, so that the surface fineness and the aesthetic degree of the ceramic are optimal.
4. The preparation method of the ceramic decal paper additive provided by the invention is simple and convenient, and is suitable for mass production. In addition, the ceramic negative ions and the selenium element prepared by the ceramic decal paper additive prepared by the method are high in content, and the normal precipitation of the selenium element and the negative ions in the using process is ensured.
5. The ceramic provided by the invention is obtained by pasting ceramic stained paper on pottery or porcelain and firing. The separation of selenium element and negative oxygen ions in the using process cannot be influenced, and particularly, the ceramic is heated to 90-105 ℃, then the heating is stopped, the temperature is kept for 0.8-1.2h, and then the heating is continued to 600-820 ℃, so that the selenium in the ceramic stained paper is better in stability.
Detailed Description
The following examples are provided to further understand the present invention, not to limit the scope of the present invention, but to provide the best mode, not to limit the content and the protection scope of the present invention, and any product similar or similar to the present invention, which is obtained by combining the present invention with other prior art features, falls within the protection scope of the present invention.
The examples do not indicate specific experimental procedures or conditions, and can be performed according to the procedures or conditions of the conventional experimental procedures described in the literature in the field. The reagents or instruments used are conventional reagent products which are commercially available, and manufacturers are not indicated. Wherein the selenium powder adopted in the following examples has a mass content of 98.99%. The ceramics of the following examples and comparative examples are all processed into ceramic finished cups by using clay as a raw material and adopting a conventional method.
Example 1
This example provides a ceramic decal additive, which has the following formulation
25g of selenium powder, 15g of glass white powder, 35g of snow white powder and 1g of boric acid.
The preparation method of the ceramic decal paper additive comprises the following steps:
(1) Mixing the glass white powder and the snow white powder, and stirring for 120min to obtain a mixture I;
(2) Mixing the mixture I and the selenium powder, and stirring for 120min to obtain a mixture III;
(3) And mixing the mixture III with boric acid, and stirring for 120min to obtain the ceramic decal paper additive.
The embodiment provides ceramic decal paper, which is prepared by the following steps:
determining the pattern (character 'Fu') and the size (the area is 24.62 square centimeters per piece) of the stained paper, carrying out plate making and plate burning on the stained paper, toning by adopting the ceramic stained paper additive of the embodiment, printing and dyeing on base paper, and drying to obtain the ceramic stained paper, wherein the amount of the ceramic stained paper additive in each piece of the stained paper is 3.2g.
The embodiment provides a ceramic, which is a pottery, and the preparation method comprises the following steps: sticking ceramic stained paper to the inner surface of a ceramic cup by adopting edible oil glue, sticking 1 piece of stained paper to each cup, placing the cup into a kiln for firing, stopping heating for 1 hour when the temperature reaches 100 ℃, then continuously heating to 800 ℃, cooling to 100 ℃, opening the door of the kiln, and continuously cooling to room temperature to obtain the selenium-enriched ceramic cup.
Example 2
The embodiment provides a ceramic decal additive, which comprises the following formula:
25g of selenium powder, 25g of anion powder, 15g of glass white, 35g of snow white powder, 1g of boric acid, 8g of silicon dioxide, 3g of spodumene and 22g of Muyu stone powder.
The preparation method of the ceramic decal paper additive comprises the following steps:
(1) Mixing selenium powder and anion powder, and stirring for 120min to obtain a mixture I;
(2) Mixing the glass white powder and the snow white powder, and stirring for 120min to obtain a mixture II;
(3) Mixing the first mixture and the second mixture, and stirring for 120min to obtain a third mixture;
(4) And mixing the mixture III, boric acid, silicon dioxide, spodumene and Muyu stone powder, and stirring for 120min to obtain the ceramic decal paper additive.
The embodiment provides ceramic decal paper, which is prepared by the following steps:
determining the pattern (character 'Fu') and the size (the area is 24.62 square centimeters per piece) of the stained paper, making a plate by using the stained paper, printing the plate by using the ceramic stained paper additive of the embodiment, printing and dyeing on the base paper, and drying to obtain the ceramic stained paper, wherein the amount of the ceramic stained paper additive in each piece of the stained paper is controlled to be 3.2g.
The embodiment provides a ceramic, which is a pottery, and the preparation method comprises the following steps: the method comprises the steps of sticking ceramic stained paper to the inner surface of a ceramic cup by adopting edible oil glue, sticking 1 piece of stained paper to each water cup, then placing the water cup into a kiln for firing, stopping heating for 1 hour when the temperature reaches 100 ℃, then continuously heating to 800 ℃, cooling to 100 ℃, opening the door of the kiln, and continuously cooling to room temperature to obtain the selenium-enriched ceramic water cup.
Example 3
The embodiment provides a ceramic decal additive, which comprises the following formula:
30g of selenium powder, 18g of anion powder, 21g of glass white powder, 27g of snow white powder, 4g of boric acid, 4g of silicon dioxide, 2g of spodumene and 26g of Muyu stone powder.
The preparation method of the ceramic decal paper additive comprises the following steps:
(1) Mixing selenium powder and anion powder, and stirring for 120min to obtain a first mixture;
(2) Mixing the glass white powder and the snow white powder, and stirring for 120min to obtain a mixture II;
(3) Mixing the first mixture and the second mixture, and stirring for 120min to obtain a third mixture;
(4) And mixing the mixture III, boric acid, silicon dioxide, spodumene and Muyu stone powder, and stirring for 120min to obtain the ceramic decal paper additive.
The embodiment provides a ceramic decal paper, which is prepared by the following steps:
determining the patterns (with Chinese character 'Fu') and the sizes (with the area of 24.62 square centimeters per piece) of the stained paper, carrying out plate making and plate burning on the stained paper, adopting the ceramic stained paper additive to carry out color mixing, and controlling the amount of the ceramic stained paper additive in each piece of the stained paper to be 3.2g so as to obtain the ceramic stained paper.
The embodiment provides a ceramic, which is a pottery, and the preparation method comprises the following steps: sticking ceramic stained paper to the inner surface of a ceramic cup by adopting edible oil glue, sticking 1 piece of stained paper to each cup, placing the cup into a kiln for firing, stopping heating for 1 hour when the temperature reaches 100 ℃, then continuously heating to 800 ℃, cooling to 100 ℃, opening the door of the kiln, and continuously cooling to room temperature to obtain the selenium-enriched ceramic cup.
Example 4
The embodiment provides a ceramic decal additive, which comprises the following formula:
28g of selenium powder, 22g of anion powder, 18g of glass white powder, 32g of snow white powder, 3g of boric acid, 5g of silicon dioxide, 4g of spodumene and 40g of Muyu stone powder.
The preparation method of the ceramic decal paper additive comprises the following steps:
(1) Mixing selenium powder and anion powder, and stirring for 120min to obtain a mixture I;
(2) Mixing the glass white powder and the snow white powder, and stirring for 120min to obtain a mixture II;
(3) Mixing the first mixture and the second mixture, and stirring for 120min to obtain a third mixture;
(4) And mixing the mixture III, boric acid, silicon dioxide, spodumene and Muyu stone powder, and stirring for 120min to obtain the ceramic decal paper additive.
The embodiment provides a ceramic decal paper, which is prepared by the following steps:
determining the pattern (character 'Fu') and the size (the area is 24.62 square centimeters per piece) of the stained paper, carrying out plate making and plate burning on the stained paper, adopting the ceramic stained paper additive to carry out color matching, and controlling the amount of the ceramic stained paper additive required in each piece of the stained paper to be 3.2g so as to obtain the ceramic stained paper.
The embodiment provides a selenium-rich ceramic which is a pottery (water cup) and a preparation method thereof comprises the following steps: the method comprises the steps of sticking ceramic stained paper to the inner surface of a ceramic cup by adopting edible oil glue, sticking 1 piece of stained paper to each water cup, then placing the water cup into a kiln for firing, stopping heating for 1 hour when the temperature reaches 100 ℃, then continuously heating to 800 ℃, cooling to 100 ℃, opening the door of the kiln, and continuously cooling to room temperature to obtain the selenium-enriched ceramic water cup.
Comparative example 1
This comparative example provides a ceramic, substantially the same formulation and method as example 1, except for the formulation of the ceramic decal additive, which formulation is as follows: 15g of glass white powder, 35g of snow white powder and 1g of boric acid.
Comparative example 2
This comparative example provides a ceramic, substantially the same formulation and method as example 1, except for the formulation of the ceramic decal additive, which formulation is as follows: 25g of selenium powder and 51g of boric acid.
Comparative example 3
This comparative example provides a ceramic, substantially the same formulation and method as example 1, except for the formulation of the ceramic decal additive, which formulation is as follows: 25g of selenium powder and 51g of snow white powder.
Comparative example 4
This comparative example provides a ceramic, substantially the same formulation and method as example 1, except for the formulation of the ceramic decal additive, which formulation is as follows: 25g of selenium powder and 51g of glass white powder.
Examples of the experiments
The selenium content of the ceramic water cups prepared in example 1 and each proportion is tested according to national standard GB5009.92-2017 'determination of selenium in food safety national standard food', 1000ml of water (ceramic stained paper is completely immersed in water) is added into the ceramic water cups and soaked for 1h to obtain soaking solutions, the selenium content in the soaking solutions is respectively determined, and the determination results are shown in the following table 1; the specific measurement method is as follows:
TABLE 1 test results
| Item | Selenium content (μ g/L) |
| Example 1 | 206.6 |
| Comparative example 1 | 0 |
| Comparative example 2 | 39.61 |
| Comparative example 3 | 4.4 |
| Comparative example 4 | 4.34 |
As can be seen from the data in the table above, in comparative examples 2-4, the boric acid, the snow white powder and the glass white powder which are independently adopted have low curing capability on the selenium element and poor stability of the selenium element, so that the selenium content in the soaking solution of the prepared water cup is low when the water cup is used, while the curing capability of the three compositions adopted in the embodiment 1 of the invention on the selenium element is obviously improved, and the selenium content released in the soaking solution of the prepared water cup is obviously improved when the water cup is used.
With reference to national standard GB5009.92-2017 determination of selenium in food safety national standard food, test example 2 shows that the content of negative ions in the soak solution obtained by the method is up to 9964 negative ions/cm 3 。
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (6)
1. The ceramic decal paper additive is characterized by comprising, by weight, 25 parts of selenium powder, 25 parts of anion powder, 15 parts of glass white powder, 35 parts of snow white powder, 1 part of boric acid, 8 parts of silicon dioxide, 3 parts of spodumene and 22 parts of wooden fish stone powder;
or 30 parts of selenium powder, 18 parts of anion powder, 21 parts of glass white, 27 parts of snow white, 4 parts of boric acid, 4 parts of silicon dioxide, 2 parts of spodumene and 26 parts of wooden fish stone powder;
or 28 parts of selenium powder, 22 parts of anion powder, 18 parts of glass white, 32 parts of snow white, 3 parts of boric acid, 5 parts of silicon dioxide, 4 parts of spodumene and 40 parts of Muyu stone powder;
the preparation method of the ceramic decal additive comprises the following steps:
(1) Uniformly mixing glass white powder and snow white powder to obtain a first mixture;
(2) Uniformly mixing the mixture I with a mixture II containing selenium powder and anion powder to obtain a mixture III;
(3) And uniformly mixing the mixture III with boric acid, silicon dioxide, spodumene and Muyu stone powder to obtain the ceramic decal paper additive.
2. Ceramic decal paper, wherein the ceramic decal paper is toned with the ceramic decal paper additive of claim 1.
3. Selenium-enriched ceramic, which is characterized by comprising the ceramic decal paper of claim 2.
4. The selenium-enriched ceramic of claim 3, wherein a binder is disposed between the ceramic and the ceramic decal.
5. The selenium-enriched ceramic of claim 4, wherein the binder is at least one of oleo gum and gelatine powder.
6. A firing method of the selenium-rich ceramic as claimed in any one of claims 3 to 5, which comprises heating the ceramic to 90 to 105 ℃, then stopping heating, keeping the temperature for 0.8 to 1.2h, then continuing heating to 600 to 820 ℃, and cooling to obtain the selenium-rich ceramic.
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| CN105541406A (en) * | 2016-02-18 | 2016-05-04 | 霍小容 | Preparation method of selenium-rich ceramic body |
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