CN111825335A

CN111825335A - Anti-mould ceramic glaze and production method of product

Info

Publication number: CN111825335A
Application number: CN201910299388.2A
Authority: CN
Inventors: 唐奇; 顾晓朦; 吴兰; 唐菁珧; 谢丽红; 王旅云
Original assignee: Foshan Tiangong Jiahui Culture Technology Co ltd
Current assignee: Foshan Tiangong Jiahui Culture Technology Co ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2020-10-27

Abstract

The invention provides a functional ceramic glaze with anti-mould performance and a production method of products thereof, the glaze is used for manufacturing ceramics and enamel products with anti-mould effect on the surface, and also relates to the specific production and use process method thereof. The invention has the beneficial effects that the functional glaze with long-acting and lasting anti-mould performance is prepared, can be widely applied to building ceramics, sanitary ceramics, daily ceramics and enamel products, has the characteristics of environmental protection, no toxicity, long-acting and lasting effect after the anti-mould functional glaze is fired at high temperature, is particularly beneficial to use environments and places with high requirements on mould resistance, and plays a role in improving the environment and indirectly benefiting the health of human bodies.

Description

Anti-mould ceramic glaze and production method of product

Technical Field

The invention relates to an anti-mould ceramic glaze and a production method of a product, wherein the glaze is used for manufacturing ceramic with the surface capable of generating anti-mould performance, and also relates to a specific production and use process method thereof.

Background

Health problems are always one of the most concerned focuses of people, however, bacteria are ubiquitous, especially, harmful bacteria and mold directly harm human health, and mold and mycotoxin cause great harm to human health, and directly cause adverse effects such as chronic poisoning, carcinogenesis and teratogenesis, so that the influence of mold on environment and human health is increasingly attracting attention. The food is polluted by the mould most commonly, the mould which we see is a part where the mould hyphae completely develop and form, after the food is mildewed, the part which does not mildew actually has a large amount of mould which can not be seen by naked eyes, and simultaneously, the toxin generated by the mould can be diffused in the food, even if the food is stored in a refrigerator for a long time, the food can be polluted by the mould and the toxin; the mold exists in places with dark and humid environments, such as bathrooms, toilets, water pools, kitchen cabinets and the like in a large amount, and the existence of the mold at home can directly cause diseases such as allergic rhinitis, bronchial asthma and the like of weak-resistance people of children and old people; in large-scale storage places such as warehouses, storehouses and the like, the storage environment is also a high-mildew breeding environment due to the conditions of less ventilation, closed storage and the like for a long time, and adverse effects are indirectly caused on stored articles and the environment.

The antibacterial and mildewproof material is a novel functional material with antibacterial and bactericidal properties, and is inhibited from dying after microorganisms such as bacteria or mildew contact the surface of an antibacterial and mildewproof material product. At present, most of antibacterial and mildewproof materials are organic plastic products, the core component of the antibacterial and mildewproof materials is an antibacterial and mildewproof agent, and the antibacterial and mildewproof materials are directly processed by adding a small amount of the antibacterial and mildewproof agent into plastic master batches, but the antibacterial and mildewproof efficiency of the materials is reduced due to the problem that the antibacterial and mildewproof agent is difficult to disperse in the plastic, so a surface coating mode is mostly adopted for the antibacterial and mildewproof plastics at present, and when the surface of an antibacterial plastic coating is in direct contact with water flow and the outside, the antibacterial component on the surface of the product is quickly lost, so that the antibacterial and mildewproof lasting performance is reduced, and the antibacterial and mildewproof effect cannot be achieved after 6 months.

The erosion and continuous breeding of the mould on the material are divided into primary erosion and secondary erosion, wherein the primary erosion refers to that the mould directly obtains nutrient substances from the material, and the material is eroded by the mould and then becomes mildewed; secondary erosion means that nutrients required for growth of the mold are not directly obtained from the material, but organic matters such as dust, grease, sweat stains and the like are accumulated on the surface during use and storage of the material, so that the mold is bred. The excellent mildew-resistant material has good bacteriostatic or bactericidal capacity, is insoluble in water or has extremely low solubility, the mildew-resistant performance has no adverse effect on the performance and the appearance of the material, the high-temperature ceramic glaze is undoubtedly the best surface material selection, the ceramic has good chemical stability and weather resistance, is environment-friendly and harmless, almost has no primary erosion, has low secondary erosion and is the best carrier of the mildew-resistant material.

The antibacterial agent has high temperature resistance due to high sintering temperature of the ceramic, the antibacterial ceramic existing in the current market mainly aims at escherichia coli and staphylococcus aureus, two methods are adopted according to the common antibacterial principle, one method is silver ion antibacterial, the other method is photocatalytic antibacterial, the silver ion antibacterial method has the problem of performance degradation, and after the antibacterial ceramic is used for a period of time, the antibacterial performance is continuously reduced due to the reduction of the activity of silver ions on the surface and is almost ineffective, so the antibacterial ceramic prepared by the method is difficult to be widely popularized and applied in the market all the time; and with TiO₂The typical photocatalytic antibacterial materials need external light irradiation to exert performance, and most of the common bacteria breeding environments are insufficient light or even no light, so that the antibacterial performance is lost.

At present, no ceramics and performance research specially aiming at mildew resistance exists, and no ceramics aiming at mildew resistance exists in the market, but the requirements on the mildew resistance are wide no matter in daily utensils such as tableware and storage containers which are in direct contact with food, places such as toilets, bathrooms, kitchens and washing tables in homes, even industrial barns, food warehouses, sewage and garbage treatment plants and the like.

Disclosure of Invention

The invention aims to prepare a composite ceramic glaze with mildew resistance, which comprises main materials of actinide oxides and auxiliary materials of lanthanide cerium oxide and silver phosphate, wherein a glaze surface obtained after high-temperature sintering has the mildew resistance. The ceramic produced by the technology has the characteristics of lasting mould inhibiting and killing effect, environmental protection, no toxicity, long lasting effect and the like, can be used for mould-resistant domestic ceramics, improves the food freshness preservation degree, can be applied to mould-resistant buildings and sanitary ceramics, achieves the effects of improving indoor environments and sanitation of bathrooms, toilets and the like and benefiting the health of people, has wide application range, and is simple and feasible in the provided production process method, thereby being beneficial to popularization and application.

The technical scheme of the invention is as follows:

preparing a compound inorganic high-temperature mildew inhibitor according to the formula performance requirement, wherein the compound inorganic high-temperature mildew inhibitor comprises the following components in percentage by weight: the main material actinide oxide in the final glaze material accounts for 0.2-4.5 wt%, and the auxiliary material is one or two of cerium oxide and silver phosphate, and the sum of the mass percentages is 0.3-7.0 wt%. The materials are prepared into the inorganic high-temperature type mildew-resistant agent material according to the formula. Then mixing with inorganic materials such as feldspar, quartz, kaolin, boron and the like in percentage by mass₂12%-65%，Al₂O₃6 to 26 percent, 2.0 to 12 percent of the sum of alkali metal and alkaline earth metal oxides and 0 to 13 percent of boron oxide, preparing materials, carrying out wet ball milling and sieving to obtain anti-mildew ceramic glaze materials at different use temperatures, applying the glaze materials to a ceramic or metal matrix in a manner including but not limited to glaze spraying, glaze dipping and the like, and sintering at high temperature to be combined on the surface of a ceramic product or a metal product to prepare the ceramic and enamel product with the anti-mildew function.

The realization process method of the invention is as follows:

(1) accurately weighing and proportioning the main material and the auxiliary material and necessary materials in feldspar, quartz, kaolin and glaze according to the required percentage of the formula, adding water, and ball-milling in a ball mill;

(2) ball-milling the glaze until the surplus glaze meets the process requirements of specific gravity, and glazing the base blank;

(3) glazing the processed glaze on a ceramic or metal blank, and putting the ceramic or metal blank into a kiln to be fired at 1020-1350 ℃.

Detailed Description

Example 1:

thorium oxide 0.9%, silver phosphate 0.6%, quartz 26%, kaolin 9%, potassium feldspar 27%, albite 20%, wollastonite 13%, barium carbonate 3%, mixing and blending, and adding water glass 0.3% and CMC 0.06%, blending: adding water =1:0.8 into a ball mill together for ball milling, grinding to a fineness of 0.5-1.0% of a 250-mesh screen residue, discharging slurry, sieving, and removing iron to obtain the mildew-resistant functional glaze slip.

The glaze slip is adjusted to the specific gravity of 1.65-1.72g/mL, is applied to the ceramic tableware biscuit molded by low-temperature biscuiting in a glaze spraying way, enters a shuttle kiln to be baked in a reducing atmosphere at the maximum baking temperature of 1310 ℃, and is baked to obtain the daily ceramic tableware with the anti-mildew function.

Example 2:

thorium oxide 0.6%, cerium oxide 2.5%, quartz 12%, ball clay 4%, calcined kaolin 7%, potassium feldspar 31%, albite 17%, apatite 16%, talc 10%, mixing, adding ceramic auxiliary agents STPP 0.2% and CMC0.08%, mixing: adding water =1:0.6 into a ball mill for ball milling, grinding until the residue is 0.7-1.2% of a 250-mesh sieve, and sieving to obtain the mildew-resistant functional glaze slip.

And removing iron from the glaze slip, sieving to adjust the specific gravity to 1.72-1.78g/mL, glazing on the dry-pressing ceramic green body in a glaze spraying mode, and firing at 1160 ℃ at the highest temperature of a roller kiln to obtain the ceramic glazed brick with the anti-mildew function.

Example 3:

1.2 percent of thorium oxide, 3 percent of cerium oxide, 0.3 percent of silver phosphate, 19 percent of quartz, 17 percent of kaolin, 18 percent of potash feldspar, 42 percent of zirconium white frit, 0.2 percent of ceramic auxiliary agent STPP and 0.08 percent of CMC are mixed and proportioned, and the materials are as follows: water =1:0.5, adding into a ball mill for ball milling, grinding to a 250-mesh screen residue of 0.3-0.8%, removing iron, and sieving to obtain the mildew-resistant functional sanitary ceramic glaze slip.

And (3) sieving the glaze slip for the second time, removing iron, adjusting the specific gravity to 1.68-1.72g/mL, spraying glaze on the formed sanitary ceramic blank, and sintering in a tunnel kiln at the maximum temperature of 1280 ℃ to obtain the sanitary ceramic product with the antibacterial and antifungal functions.

Example 4:

0.5% of thorium oxide, 0.5% of silver phosphate, 41% of quartz, 5% of alumina, 8% of titanium oxide, 6% of zirconium silicate, 32% of boric acid and 3% of fluorite are mixed and mixed, the mixture is put into an alumina crucible to be melted in a muffle furnace at high temperature, the temperature of 1300 ℃ is kept for 30 minutes, then the leaked material is quenched by water and quenched, and the water-quenched frit is fished out and dried to obtain the high-boron anti-mildew frit.

67% of the high-boron anti-mildew frit, 6% of quartz, 12% of ball clay, 5% of antimony oxide and 0.1% of CMC are added: water =1:0.7, adding into a ball mill for ball milling, grinding to 250 meshes of 0.6-1.0% of screen residue, and sieving to obtain the mildew-resistant functional enamel glaze. And (3) enameling the glaze slip onto the surface of the metal bottom base by a one-step enameling process, and firing the enamel slip in a pushed slab kiln at the maximum temperature of 890 ℃ in an oxidizing atmosphere to obtain an enamel product with an anti-mildew function.

Example 5:

thorium oxide 1.0%, quartz 18%, calcined kaolin 54%, kaolin 15%, ferric oxide 6%, glass powder 6%, and CMC0.12%, and mixing materials are as follows: and (3) adding water =1:1, ball-milling in a ball mill, and grinding until the residue of the 250-mesh sieve is 0.7-1.2% to obtain the mildew-resistant functional ceramic glaze slip.

The glaze slip is adjusted to the specific gravity of 1.45-1.50g/mL, the mixture is placed on a plain body in a formed dark-red enameled pottery in a glaze blowing mode, and the mixture is placed in an electric kiln to be fired in an oxidizing atmosphere at the highest temperature of 1180 ℃ to obtain the dark-red enameled ceramic product with the anti-mildew function.

Claims

1. An anti-mould ceramic glaze and a production method of products are characterized in that: an inorganic silicate glaze containing inorganic compound mildew inhibitor, which comprises main material of actinide oxide, and the mass percent of the main material is 0.2-4.5%; the auxiliary material is lanthanide cerium oxide and silver phosphate, the sum of the mass percentages is 0.3-7.0%, and the glaze surface has anti-mildew performance after high-temperature sintering.

2. The process for producing an antimycotic ceramic glaze and its products according to claim 1, wherein: the glaze can be used for producing domestic ceramics with the anti-mould performance on the surface of the domestic ceramics.

3. The process for producing an antimycotic ceramic glaze and its products according to claim 1, wherein: the glaze can be used for producing sanitary ceramics with antifungal performance on the surface of the sanitary ceramics.

4. The process for producing an antimycotic ceramic glaze and its products according to claim 1, wherein: the glaze can be used for producing architectural ceramics with antifungal performance on the surface of glazed architectural ceramics.

5. The process for producing an antimycotic ceramic glaze and its products according to claim 1, wherein: the glaze can be used for producing enamel products with antifungal performance on the surfaces of metal products.

6. The process for producing an antimycotic ceramic glaze and its products according to claim 1, wherein: the firing range of the product applying the glaze is 1020-1350 ℃, and the product is fired in an oxidizing or reducing atmosphere.