CN107892482B - Low-melting-point glass glaze for low-expansion ceramic liner back cover and preparation method and application thereof - Google Patents
Low-melting-point glass glaze for low-expansion ceramic liner back cover and preparation method and application thereof Download PDFInfo
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- CN107892482B CN107892482B CN201711339534.7A CN201711339534A CN107892482B CN 107892482 B CN107892482 B CN 107892482B CN 201711339534 A CN201711339534 A CN 201711339534A CN 107892482 B CN107892482 B CN 107892482B
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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
- C03C8/14—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions
- C03C8/20—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions containing titanium compounds; containing zirconium compounds
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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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- 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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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
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Abstract
The invention relates to a low-melting-point glass glaze for low-expansion ceramic liner back cover, a preparation method and application thereof, wherein the low-melting-point glass glaze is mainly prepared from the following raw materials in percentage by mass: 26 to 30 percent of spodumene, 2 to 5 percent of petalite, 5 to 8 percent of aluminum oxide, 11 to 15 percent of quartz sand, 15 to 19 percent of magnesium oxide, 5 to 8 percent of boric anhydride, 6 to 10 percent of zirconium oxide, 3 to 6 percent of red lead and 2 to 5 percent of cerium oxide. The glass glaze has relatively low softening and curing temperature and relatively low expansion coefficient matched with the low-expansion ceramic liner, so that the requirement for sealing the bottom of the low-expansion ceramic liner can be met, the glass glaze is durable and can resist ablation, aging, falling, melting and the like caused by high temperature brought by various heating modes, no dissolved substances exist in the glass glaze in use, the glass glaze has higher applicability, brighter appearance, good waterproof and antifouling performances, and is healthier and more environment-friendly, the problems that an organic coating and a waterproof agent fall off or are dissolved out to generate toxic substances, and the toxic substances cannot be cured simultaneously with applique and a water line in use are avoided, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of ceramics, in particular to a low-melting-point glass glaze for a low-expansion ceramic liner back cover, and a preparation method and application thereof.
Background
Along with the improvement of the living standard of people, green life and healthy life are advocated, and people pay more attention to health preservation, so that the kitchen ware scrapes comprehensive ceramic wind, and ceramic chafing dishes, ceramic stews, ceramic electric cookers, ceramic woks and the like are increasingly favored by common people.
At present, the heating modes of ceramic chafing dishes, ceramic stewpots, ceramic electric cookers and the like are mostly fixed heating plate heating modes, and the direct heat transfer mode needs the bottom of a ceramic inner container to be in close contact with a heating plate, namely the bottom of the ceramic inner container needs to have quite good flatness. Ceramic is different from metal products, and there is very big contraction ratio among the ceramic inner bag firing process to make porcelain-forming back bottom have a certain degree of deformation, need use the grinding apparatus to grind the flat bottom, and grind flat bottom and can lead to inner bag surface bottom unglazed certainly, and the ceramic inner bag matrix exposes, and can't apply once more after grinding the end and soften the very high ordinary glaze of solidification temperature, and the protection that the unglazed matrix body that exposes outside so had not had the glaze layer can absorb water, inhale dirty, seriously influences the life and the aesthetic property of ceramic inner bag.
Disclosure of Invention
Accordingly, there is a need for a low-melting glass glaze for a low-expansion ceramic liner having a low softening and curing temperature and a low expansion coefficient.
A low-melting-point glass glaze for the back cover of a low-expansion ceramic liner is mainly prepared from the following raw materials in percentage by mass:
in one embodiment, the low-melting-point glass glaze has the softening temperature of 700-720 ℃, the curing temperature of 730-770 ℃, and the expansion coefficient of 24 × 10-7/℃～29×10-7/℃。
The invention also provides a preparation method of the low-melting-point glass glaze for the low-expansion ceramic liner back cover, which comprises the following steps:
weighing the raw materials according to the mass percentage;
mixing the raw materials, melting the mixture at 1420-1450 ℃ to prepare glass, and grinding the glass into glass glaze powder;
and preparing the glass glaze powder into glaze slip to obtain the low-melting-point glass glaze.
The invention also provides an application of the low-melting-point glass glaze for the low-expansion ceramic liner back cover in the low-expansion ceramic liner back cover, which comprises the following steps: and grinding the bottom of the low-expansion ceramic liner to expose a matrix of the low-expansion ceramic liner, then silk-screening the low-melting-point glass glaze at the bottom of the low-expansion ceramic liner, and secondarily softening and curing the low-melting-point glass glaze in a curing kiln to obtain the glass glaze.
At present, the ceramic inner container adopting the heating mode has the problems of poor heating efficiency caused by selecting a mode of not grinding the bottom, water absorption and dirt absorption caused by selecting a mode of not processing after grinding the bottom, or the mode of sealing the outer surface of the bottom of the low-expansion ceramic inner container after being ground flat by using a waterproof agent or an organic coating and the like. However, the waterproof agent is not temperature-resistant and durable, the organic coating is easy to fall off, the bottom of the organic coating needs sand blasting and roughening treatment, and the waterproof agent and the organic coating cannot be solidified together with decal paper such as trademark patterns, water lines and the like through a curing kiln and need to be treated independently, so that the energy consumption is consumed, and the time consumption is reduced. The invention breaks through the limitation of traditional research thinking, provides a low-melting-point glass glaze for sealing the bottom of a low-expansion ceramic liner, adopts a low-expansion high-vitrification design on the formula, wherein each component has a specific function, and lithium is helpful for reducing the expansion coefficient, so spodumene is introduced, but excessive spodumene can cause the secondary softening temperature of the melted glass powder to be too high, and the excessive spodumene cannot balance the requirements, magnesium oxide is introduced for adjustment, and a certain amount of zirconium oxide is matched to help to reach the required expansion coefficient; boric anhydride and quartz sand are glass state forming materials, so that the materials are highly vitrified; red lead helps to lower the softening temperature of the glass powder, but also increases the coefficient of expansion and is therefore also a shield surface; cerium dioxide is used as a total regulator to play a role of a catalyst and a glass clarifier, and cerium oxide is used for replacing the traditional arsenic oxide to be used as the glass clarifier to remove bubbles and trace coloring elements, so that the effect is remarkable when the colorless glass is prepared, the finished product crystal is pure white, the transparency is good, and the glass strength and the heat resistance are improved. The glass glaze has the advantages that the glass glaze can be perfectly combined only in a specific proportion, so that the glass glaze has relatively low softening and curing temperature and relatively low expansion coefficient matched with a low-expansion ceramic liner, the requirements for sealing the low-expansion ceramic liner can be met, the glass glaze is durable in use and can resist ablation, aging, falling, melting and the like caused by high temperature in various heating modes compared with a waterproof agent and an organic coating, no dissolved substances are generated in the use of the glass glaze, the applicability is high, the appearance is bright, the waterproof and antifouling performance is good, the glass glaze is healthier and more environment-friendly, the problems that the organic coating and the waterproof agent fall off or are dissolved out to generate toxic substances in the use, and the toxic substances cannot be simultaneously cured with applique and a water sticking line are solved, and the production efficiency is improved.
Detailed Description
In order that the invention may be more fully understood, there now follows a more detailed description of the invention, in which preferred embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The low-melting-point glass glaze for the low-expansion ceramic liner back cover in one embodiment of the invention is mainly prepared from the following raw materials in percentage by mass:
specifically, the softening temperature of the low-melting-point glass glaze is 700-720 ℃, the curing temperature is 730-770 ℃, and the expansion coefficient is 24 × 10-7/℃～29×10-7/℃。
The invention breaks through the limitation of traditional research thinking, provides a low-melting-point glass glaze for sealing the bottom of a low-expansion ceramic liner, adopts a low-expansion high-vitrification design on the formula, wherein each component has a specific function, and lithium is helpful for reducing the expansion coefficient, so spodumene is introduced, but excessive spodumene can cause the secondary softening temperature of the melted glass powder to be too high, and the excessive spodumene cannot balance the requirements, magnesium oxide is introduced for adjustment, and a certain amount of zirconium oxide is matched to help to reach the required expansion coefficient; boric anhydride and quartz sand are glass state forming materials, so that the materials are highly vitrified; red lead helps to lower the softening temperature of the glass powder, but also increases the coefficient of expansion and is therefore also a shield surface; cerium dioxide is used as a total regulator to play a role of a catalyst and a glass clarifier, and cerium oxide is used for replacing the traditional arsenic oxide to be used as the glass clarifier to remove bubbles and trace coloring elements, so that the effect is remarkable when the colorless glass is prepared, the finished product crystal is pure white, the transparency is good, and the glass strength and the heat resistance are improved. The glass glaze has the advantages that the glass glaze can be perfectly combined only in a specific proportion, so that the glass glaze has relatively low softening and curing temperature and relatively low expansion coefficient matched with a low-expansion ceramic liner, the requirements for sealing the low-expansion ceramic liner can be met, the glass glaze is durable in use and can resist ablation, aging, falling, melting and the like caused by high temperature in various heating modes compared with a waterproof agent and an organic coating, no dissolved substances are generated in the use of the glass glaze, the applicability is high, the appearance is bright, the waterproof and antifouling performance is good, the glass glaze is healthier and more environment-friendly, the problems that the organic coating and the waterproof agent fall off or are dissolved out to generate toxic substances in the use, and the toxic substances cannot be simultaneously cured with applique and a water sticking line are solved, and the production efficiency is improved.
The preparation method of the low-melting-point glass glaze for the low-expansion ceramic liner sealing bottom of the embodiment of the invention comprises the following steps of S1-S3:
s1, weighing the raw materials according to the mass percentage.
S2, mixing the raw materials, melting the mixture into glass at 1420-1450 ℃, and grinding the glass into glass glaze powder.
Specifically, the raw materials are mixed and melted at the high temperature of 1420-1450 ℃ to prepare glass liquid, then the glass liquid is directly poured into water to be quenched into glass frit, and the glass frit is ball-milled and sieved by a 200-mesh screen to obtain the glass glaze powder.
S3, preparing the glass glaze powder into glaze slip to obtain the low-melting-point glass glaze.
Specifically, the low-melting-point glass glaze is obtained by mixing glass glaze powder and water-based varnish to prepare glaze slip.
The preparation method of the embodiment is simple in process and easy to realize, the obtained glass glaze has relatively low softening and curing temperature and relatively low expansion coefficient matched with the low-expansion ceramic liner, so that the requirement for sealing the bottom of the low-expansion ceramic liner can be met, the glass glaze is durable in use and can resist ablation, aging, falling, melting and the like caused by high temperature brought by various heating modes compared with a waterproof agent and an organic coating, the glass glaze is free of dissolved substances in use, high in applicability, bright in appearance, good in waterproof and antifouling performance, healthier and more environment-friendly, the problems that the organic coating and the waterproof agent fall off or are dissolved out to generate toxic substances in use, and cannot be cured with decals and water sticking lines at the same time are avoided, and the preparation method has very positive significance.
The application of the low-melting-point glass glaze for the low-expansion ceramic liner back cover in the low-expansion ceramic liner back cover of the embodiment of the invention comprises the following steps: and (3) grinding the bottom of the low-expansion ceramic liner to expose a matrix of the low-expansion ceramic liner, then silk-screening the low-melting-point glass glaze on the outer surface of the bottom of the low-expansion ceramic liner, and secondarily softening and curing the low-melting-point glass glaze at 730-770 ℃ by using a low-temperature curing kiln to obtain the glass glaze.
The application of the embodiment is to soften the glass glaze powder melted at high temperature into the glass glaze at low temperature, the process is simple, the popularization and the application are easy, the bottom of the processed low-expansion ceramic liner has quite good flatness, the low-expansion ceramic liner can be in close contact with a heating plate, the heating efficiency is good, the low-expansion ceramic liner is healthy and environment-friendly, the waterproof and antifouling capabilities are strong, the service life and the attractiveness of the ceramic liner are obviously prolonged, and the wide market prospect is realized.
The following are specific examples.
Example 1
Weighing the following raw materials in percentage by mass: 30% of spodumene, 15% of quartz sand, 19% of magnesium oxide, 8% of boric anhydride, 6% of aluminum oxide, 5% of petalite, 9% of zirconium oxide, 3% of red lead and 5% of cerium oxide. The raw materials are fully and uniformly mixed, then the mixture is melted into glass liquid at the temperature of 1435 ℃, then the glass liquid is directly poured into water to be quenched into glass frits, the glass frits are ball-milled and sieved by a 200-mesh screen to obtain glass glaze powder, and then the glass glaze powder and water-based varnish are uniformly mixed to prepare glaze slurry, namely the low-melting-point glass glaze.
Example 2
Weighing the following raw materials in percentage by mass: 29% of spodumene, 15% of quartz sand, 17% of magnesium oxide, 7% of boric anhydride, 8% of aluminum oxide, 4% of petalite, 10% of zirconium oxide, 6% of red lead and 4% of cerium oxide. The raw materials are fully and uniformly mixed, then melted at the high temperature of 1420 ℃ to be made into glass liquid, then directly poured into water to be quenched into glass frits, the glass frits are ball-milled and sieved by a 200-mesh screen to obtain glass glaze powder, and then the glass glaze powder and water-based ink-adjusting oil are uniformly mixed to be made into glaze slurry to obtain the low-melting-point glass glaze.
Example 3
Weighing the following raw materials in percentage by mass: 27% of spodumene, 13% of quartz sand, 19% of magnesium oxide, 8% of boric anhydride, 8% of aluminum oxide, 5% of petalite, 10% of zirconium oxide, 5% of red lead and 5% of cerium oxide. The raw materials are fully and uniformly mixed, then melted into glass liquid at the high temperature of 1450 ℃, directly poured into water to be quenched into glass frits, the glass frits are ball-milled and sieved by a 200-mesh screen to obtain glass glaze powder, and the glass glaze powder and water-based varnish are uniformly mixed to prepare glaze slurry to obtain the low-melting-point glass glaze.
Comparative example 1
Weighing the following raw materials in percentage by mass: 20% of spodumene, 10% of quartz sand, 25% of magnesium oxide, 10% of boric anhydride, 4% of aluminum oxide, 10% of petalite, 12% of zirconium oxide, 5% of red lead and 4% of cerium oxide. The raw materials are fully and uniformly mixed, then melted into glass liquid at the high temperature of 1450 ℃, directly poured into water to be quenched into glass frits, the glass frits are ball-milled and sieved by a 200-mesh screen to obtain glass glaze powder, and the glass glaze powder and water-based varnish are uniformly mixed to prepare glaze slurry to obtain the glass glaze.
Comparative example 2
Weighing the following raw materials in percentage by mass: 10% of spodumene, 20% of quartz sand, 10% of magnesium oxide, 8% of boric anhydride, 10% of aluminum oxide, 10% of petalite, 12% of zirconium oxide, 10% of red lead and 10% of cerium oxide. The raw materials are fully and uniformly mixed, then melted into glass liquid at the high temperature of 1450 ℃, directly poured into water to be quenched into glass frits, the glass frits are ball-milled and sieved by a 200-mesh screen to obtain glass glaze powder, and the glass glaze powder and water-based varnish are uniformly mixed to prepare glaze slurry to obtain the glass glaze.
The performance tests of the glass glazes of the embodiments 1 to 3 and the comparative examples 1 to 2 show that the glass glaze of the embodiments of the invention has relatively low softening and curing temperature and relatively low expansion coefficient matched with the low-expansion ceramic liner, so that the requirements of the low-expansion ceramic liner for bottom sealing can be met, compared with a waterproof agent and an organic coating, the glass glaze is durable and can resist ablation, aging, falling, melting and the like caused by high temperature caused by various heating modes, and the glass glaze has no dissolved substances in use, higher applicability, brighter appearance, good waterproof and antifouling performance, and is healthier and more environment-friendly.
TABLE 1
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (4)
1. The low-melting-point glass glaze for the back cover of the low-expansion ceramic liner is characterized by being mainly prepared from the following raw materials in percentage by mass:
the softening temperature of the low-melting-point glass glaze is 700-720 ℃, the curing temperature is 730-770 ℃, and the expansion coefficient is 24 × 10-7/℃～29×10-7/℃。
2. The low-melting-point glass glaze according to claim 1, which is prepared from the following raw materials in percentage by mass:
3. a method for preparing a low-melting-point glass glaze for a low-expansion ceramic liner back cover according to claim 1 or 2, which comprises the following steps:
weighing the raw materials according to the mass percent of claim 1;
mixing the raw materials, melting the mixture at 1420-1450 ℃ to prepare glass, and grinding the glass into glass glaze powder;
and preparing the glass glaze powder into glaze slip to obtain the low-melting-point glass glaze.
4. The use of the low-melting-point glass glaze for the low-expansion ceramic liner back cover according to claim 1 or 2 in the low-expansion ceramic liner back cover, which comprises the following steps: and grinding the bottom of the low-expansion ceramic liner to expose a matrix of the low-expansion ceramic liner, then silk-screening the low-melting-point glass glaze at the bottom of the low-expansion ceramic liner, and secondarily softening and curing the low-melting-point glass glaze in a curing kiln to obtain the glass glaze.
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| CN115286249B (en) * | 2022-08-22 | 2023-04-14 | 九牧厨卫股份有限公司 | Self-cleaning glaze and application thereof |
| CN115432928A (en) * | 2022-09-01 | 2022-12-06 | 中山市欧莱克电器有限公司 | Ceramic glaze applied to electric heating appliance inner container and preparation method and application thereof |
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Denomination of invention: Low melting point glass glaze for bottom sealing of low expansion ceramic liner and its preparation method and Application Effective date of registration: 20220215 Granted publication date: 20200707 Pledgee: Changde Finance Guarantee Co.,Ltd. Pledgor: HUNAN JIASHENG DIANTAO NEW MATERIAL CO.,LTD. Registration number: Y2022980001566 |
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