A new type of bolan matt glaze for medium temperature pottery

Abstract

The application discloses a novel Bao Lan matt glaze for medium-temperature pottery, and belongs to the technical field of glaze materials, which is prepared from the following raw materials: matt frit 45-50 parts, antibacterial silicon powder 15-20 parts, Guizhou soil 5-8 parts, bright frit 10-15 parts, barium carbonate 4-6 parts, strontium carbonate 1-2 parts, ultrafine aluminum powder 3-6 parts, zirconium silicate treated by titanate coupling agent 1-2 parts, gemstone blue colorant 8-12 parts and talc powder 15-20 parts. The antibacterial silicon powder uses zinc ions as antibacterial ions and rare earth lanthanum ions as synergistic ions to improve the antibacterial effect, and compared with the conventional use of nanometer silver antibacterial, the antibacterial particles in the application are not prone to discoloration, the introduction of the lanthanum element as a sintering raw material can reduce the porosity of the ceramic surface, and in the high-temperature processing process, the base body is caused to react to generate a liquid phase, the compactness of the product surface is improved, and surface defects are reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of glaze, and particularly relates to a novel medium-temperature ceramic Baolan matt glaze. BACKGROUND

[0002] Medium-temperature ceramic glaze is a kind of coating used for ceramic production, which is sintered at medium temperature during the firing process. Matt glaze is commonly used in ceramic production, which is characterized by no luster and presents a relatively soft and smooth surface texture. This glaze is often used to create a rustic and elegant effect, and is suitable for various ceramic works, from tableware to decorative items.

[0003] In the field of domestic ceramics, the glaze formula of the current Baolan matt glaze is used to produce products that are prone to crystallization and other firing defects, unstable color development, and easy to produce defects; matt glaze ceramics are usually relatively fragile, and are prone to wear and tear and scratches in daily use, especially on frequently contacted surfaces. Since the matt glaze crystalline ceramic surface has no smooth glaze layer to protect it, it may be more susceptible to dirt and contamination, requiring more frequent cleaning and maintenance. SUMMARY

[0004] The purpose of the present application is to provide a novel medium-temperature ceramic Baolan matt glaze to solve the problem of the production of matt glaze products prone to crystallization and other firing defects, affecting the appearance or causing the surface strength of the matt glaze after firing to be low.

[0005] The purpose of the present application can be achieved by the following technical solutions:

[0006] A novel medium-temperature ceramic Baolan matt glaze, by weight, comprises the following raw materials:

[0007] 45-50 parts of matt frit, 15-20 parts of antibacterial silicon powder, 5-8 parts of Guizhou soil, 10-15 parts of bright frit, 4-6 parts of barium carbonate, 1-2 parts of strontium carbonate, 3-6 parts of ultra-fine aluminum powder, 1-2 parts of zirconium silicate treated with titanate coupling agent, 8-12 parts of gemstone blue pigment, and 15-20 parts of talc powder.

[0008] Further, the antibacterial silicon powder is prepared by the following steps:

[0009] The silicon powder is added into anhydrous ethanol to be stirred and dispersed to obtain a suspension, and the n-butyl titanate and isopropyl alcohol are mixed to obtain a mixed solution, the temperature is set to 60 DEG C, the mixed solution is added dropwise into the suspension, the pH value is adjusted to 2 by nitric acid, and the stirring reaction is continued for 5h, after the reaction is completed, the anti-bacterial silicon powder is obtained by filtration, washing, drying and calcination at 350 DEG C for 2h.

[0010] Further, the amount ratio of the silicon powder, the anhydrous ethanol, the n-butyl titanate and the isopropyl alcohol is 0.6-0.7g:10mL:2g:10mL.

[0011] Further, the silicon powder is prepared by the following steps:

[0012] The sodium silicate solution and the sodium bicarbonate aqueous solution are mixed, and the stirring reaction is carried out at a temperature of 90 DEG C to obtain a sol, the sodium silicate solution and the sodium bicarbonate aqueous solution are continuously added into the sol, the pH value is adjusted to 5-6 by nitric acid, the lanthanum nitrate solution and the zinc nitrate solution are added into the reaction system to obtain a mixed solution, the stirring reaction is continued for 1h, after the reaction is completed, the silicon powder is obtained by washing with deionized water and grinding.

[0013] Further, the concentration of the sodium silicate solution is 1mol / L, the concentration of the sodium bicarbonate aqueous solution is 0.8mol / L, the volume ratio of the sodium silicate solution and the sodium bicarbonate aqueous solution in the sol is 1.5:1, the concentration of the lanthanum ion in the mixed solution is 0.01mol / L, and the concentration of the zinc ion is 0.8mol / L.

[0014] The zirconium silicate treated by the titanate coupling agent is prepared by the following steps:

[0015] The zirconium silicate is added into water to be ultrasonically dispersed to obtain a suspension, the titanate coupling agent is added into the suspension, and the stirring is carried out for 30-40min, and the zirconium silicate treated by the titanate coupling agent is obtained by filtration, drying and crushing.

[0016] Further, the new type of mid-temperature ceramic glaze is the new type of BOLAN matt glaze, which is prepared by the following steps:

[0017] According to the formula requirements of the present application, the ingredients are weighed, ball milled, and the fineness of the glaze is detected, the fineness is controlled to be 0.01-0.05% of the residue on the 1000 mesh screen, and the glaze is used after being sieved, and is fired in a natural gas roller kiln.

[0018] Further, the kiln temperature of the natural gas roller kiln is 1180-1230 DEG C.

[0019] Further, the firing temperature curve is as follows: uniformly increasing to 1000 DEG C for 0-3h, uniformly increasing to 1180 DEG C for 3-4h, increasing to 1230 DEG C for 4-5.5h, keeping for 1h, and decreasing to 100 DEG C within 1h, and naturally cooling to room temperature.

[0020] The beneficial effects of the present application are as follows:

[0021] The present application provides a novel Bao Lan matt glaze for medium temperature pottery, which adds antibacterial silicon powder, uses zinc ions as antibacterial ions, and uses rare earth lanthanum ions as synergistic ions to improve the antibacterial effect.

[0022] In the present application, the dispersibility of zirconium silicate is improved by treating it with titanate coupling agent, and the surface has more glass phase due to the prevention of its clustering, so that the dispersion effect is good after treatment and more effective scattering can be generated.

[0023] In the processing of the matt glaze, the fineness of the glaze is strictly controlled, which directly affects the consistency, suspensibility, adhesion to the body, and the quality of the glaze surface after firing. BRIEF DESCRIPTION OF DRAWINGS

[0024] The present application will be further described below in conjunction with the drawings.

[0025] Figure 1 is a schematic diagram of the product prepared in Example 1 of the present application;

[0026] Figure 2 is a schematic diagram of the firing temperature curve in the present application. DETAILED DESCRIPTION

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] Regarding raw materials:

[0029] Material Name Manufacturer

[0030] Matte Fused Block: Gree Ceramic Technology

[0031] Ultrafine aluminum powder: Gree Porcelain Technology

[0032] Bright frit: Gree Ceramic Technology

[0033] Sapphire Blue Pigment: Gree Ceramic Technology

[0034] Barium carbonate: Liling Huihong Ceramics Materials Co., Ltd.

[0035] Strontium carbonate: Liling Huihong Ceramics Materials Co., Ltd.

[0036] Example 1

[0037] This embodiment provides a titanate coupling agent for treating zirconium silicate, prepared through the following steps:

[0038] 10g of zirconium silicate is mixed with 500mL of water and ultrasonically dispersed to obtain a suspension. 5g of titanate coupling agent is added to every 500mL of suspension, and the mixture is stirred for 30min. After filtration, drying, and pulverization, zirconium silicate treated with titanate coupling agent is obtained. The titanate coupling agent selected is titanate coupling agent 101.

[0039] Example 2

[0040] This embodiment provides a silicon micropowder, prepared through the following steps:

[0041] 15 mL of sodium silicate solution and 10 mL of sodium bicarbonate aqueous solution were mixed and stirred at 90 °C to obtain a sol. Another 10 mL of sodium silicate solution and 5 mL of sodium bicarbonate aqueous solution were added to the sol, and the pH was adjusted to 5 with nitric acid. Lanthanum nitrate solution and zinc nitrate solution were then added to the reaction system to obtain a mixed solution. The reaction was continued with stirring for 1 hour. After the reaction was complete, the mixture was washed with deionized water and ground to obtain silica powder. The concentration of the sodium silicate solution was 1 mol / L, and the concentration of the sodium bicarbonate aqueous solution was 0.8 mol / L; the volume ratio of sodium silicate solution to sodium bicarbonate aqueous solution in the sol was 1.5:1; the concentration of lanthanum ions in the mixed solution was 0.01 mol / L; and the concentration of zinc ions was 0.8 mol / L.

[0042] Example 3

[0043] The present embodiment provides a kind of silicon powder, by the following steps are prepared:

[0044] 15mL sodium silicate solution and 10mL aqueous solution of sodium bicarbonate are mixed, and the sol is obtained by stirring the reaction at a temperature of 90 DEG C, 10mL sodium silicate solution and 5mL sodium bicarbonate water are continuously added to the sol, the pH value is adjusted to 6 with nitric acid, lanthanum nitrate solution and zinc nitrate solution are added to the reaction system to obtain a mixed solution, continue to stir for 1h, after the reaction is completed, washed with deionized water, grinding, to obtain silicon powder.The concentration of sodium silicate solution is 1mol / L, the concentration of sodium bicarbonate aqueous solution is 0.8mol / L;The volume ratio of sodium silicate solution and sodium bicarbonate aqueous solution in sol is 1.5:1;The concentration of lanthanum ion in the mixed solution is 0.01mol / L;The concentration of zinc ion is 0.8mol / L.

[0045] Example 4

[0046] A new type of mid-temperature pottery novel Baolan matt glaze, prepared by the following steps:

[0047] First, preparation of antibacterial silicon powder: 10mL anhydrous ethanol is added to 0.6g of the silicon powder prepared in Example 2 and stirred to disperse, obtaining a suspension, 10mL isopropanol is mixed with 2g of n-butyl titanate to obtain a mixed solution, the temperature is set to 60 DEG C, the mixed solution is added dropwise to the suspension, and the pH value is adjusted to 2 with 0.5mol / L nitric acid, and the stirring is continued for 5h, after the reaction is completed, the antibacterial silicon powder is obtained by filtration, washing, drying and calcination at 350 DEG C for 2h.

[0048] Second, according to the weight, the raw materials are weighed: matt frit 45 parts, antibacterial silicon powder 15 parts, Guizhou soil 5 parts, bright frit 10 parts, barium carbonate 4 parts, strontium carbonate 1 part, super fine aluminum powder 3 parts, zirconium silicate treated with titanate coupling agent prepared in Example 1 1 part, gemstone blue colorant 8 parts, talc 15 parts;

[0049] Third, the weighed materials are prepared, weighed, ball milled, and the fineness of the glaze is detected, the fineness should be controlled in the range of 0.01-0.05% of the 1000 mesh sieve residue, and after sieving, it is applied to the ceramic body, the glaze layer thickness is controlled in the range of 0.3-0.4mm, after natural air drying, the top glaze slurry is applied, the thickness is controlled to be 0.2±0.05mm, and the product is fired in a natural gas roller kiln at a kiln temperature of 1180-1230 DEG C, as shown in Figure 1 The firing temperature curve is as follows: uniformly heated to 1000 DEG C for 0-3h, uniformly heated to 1180 DEG C for 3-4h, heated to 1230 DEG C for 4-5.5h, kept for 1h, and then cooled to 100 DEG C within 1h, and naturally cooled to room temperature.Figure 2 as shown.

[0050] Example 5

[0051] A new type of medium temperature ceramic Bao Lan matte glaze is prepared by the following steps:

[0052] First step, preparation of antibacterial silicon powder: 0.7g of silicon powder prepared in Example 3 is added to 10mL of anhydrous ethanol and stirred to disperse, obtaining a suspension, 2g of n-butyl titanate is mixed with 10mL of isopropyl alcohol to obtain a mixed solution, the temperature is set to 60℃, the mixed solution is added dropwise to the suspension, the pH value is adjusted to 2 with 0.5mol / L nitric acid, and the stirring reaction is continued for 5h, after the reaction is completed, the antibacterial silicon powder is obtained by filtration, washing, drying and calcination at 350℃ for 2h;

[0053] Second step, according to the weight parts, the raw materials are weighed: 50 parts of matte frit, 15 parts of antibacterial silicon powder, 5 parts of Guizhou soil, 10 parts of bright frit, 2 parts of barium carbonate, 1 part of strontium carbonate, 3 parts of ultra-fine aluminum powder, 2 parts of zirconium silicate treated with titanate coupling agent prepared in Example 1, 11 parts of Bao Lan colorant, and 20 parts of talc;

[0054] Third step, the weighed materials are prepared, weighed, ball milled, and the fineness of the glaze is detected, the fineness should be controlled within 0.01-0.05% of the 1000 mesh sieve residue, and after sieving, it is applied to the ceramic body, the glaze layer thickness is controlled within 0.3-0.4mm, after natural air drying, the glaze slurry is applied, the thickness is controlled within 0.2±0.05mm, and the firing is carried out in a natural gas roller kiln with a kiln temperature of 1180-1230℃. Firing in an oxidizing atmosphere, the firing temperature curve is as follows: uniformly heated to 1000℃ for 0-3h, uniformly heated to 1180℃ for 3-4h, heated to 1230℃ for 4-5.5h, and then cooled to 100℃ within 1h, and then naturally cooled to room temperature.

[0055] Example 6

[0056] A new type of medium temperature ceramic Bao Lan matte glaze is prepared by the following steps:

[0057] First step, preparation of antibacterial silicon powder: 0.7g of silicon powder prepared in Example 3 is added to 10mL of anhydrous ethanol and stirred to disperse, obtaining a suspension, 2g of n-butyl titanate is mixed with 10mL of isopropyl alcohol to obtain a mixed solution, the temperature is set to 60℃, the mixed solution is added dropwise to the suspension, the pH value is adjusted to 2 with 0.5mol / L nitric acid, and the stirring reaction is continued for 5h, after the reaction is completed, the antibacterial silicon powder is obtained by filtration, washing, drying and calcination at 350℃ for 2h;

[0058] Second step, by weight, take the raw materials: 50 parts of dull frit, 20 parts of antibacterial silicon powder, 8 parts of Guizhou soil, 15 parts of bright frit, 6 parts of barium carbonate, 2 parts of strontium carbonate, 6 parts of ultra-fine aluminum powder, 2 parts of zirconium silicate treated with the titanate coupling agent prepared in Example 1, 12 parts of gem blue pigment, and 20 parts of talc;

[0059] Third step, the weighed materials are prepared, weighed, ball milled, and the fineness of the glaze is detected. The fineness should be controlled within 0.01-0.05% of the 100-mesh sieve residue. After sieving, the glaze is applied to the ceramic body, and the glaze layer thickness is controlled within 0.3-0.4 mm. After natural air drying, the surface glaze slurry is applied, and the thickness is controlled within 0.2±0.05 mm. The glaze is fired in a natural gas roller kiln at a kiln temperature of 1180-1230℃. The firing temperature curve is as follows: 0-3 h, uniformly heated to 1000℃; 3-4 h, uniformly heated to 1180℃; 4-5.5 h, heated to 1230℃; 1 h of holding; and then cooled to 100℃ within 1 h, and then naturally cooled to room temperature.

[0060] The antibacterial silicon powder is tested with E. coli AS1.90 and S. aureus AS1.89 as test strains. The powder (powder concentration: 100 mg / L) is subjected to antibacterial test under light (24 w daylight lamp 2) and without light (no visible light irradiation) against E. coli and S. aureus, respectively. The results are shown in Table 1:

[0061] Table 1

[0062]

[0063] Comparative Example 1

[0064] The comparative example differs from Example 5 in that a commercially available silicon powder is used, and the rest of the raw materials and the preparation process remain the same as in Example 5.

[0065] Comparative Example 2

[0066] The comparative example differs from Comparative Example 1 in that the zirconium silicate treated with the titanate coupling agent is replaced by untreated zirconium silicate.

[0067] The samples prepared in Examples 4-6 and Comparative Examples 1-2 are tested, in which Mohs hardness: the antibacterial property is tested according to “JC / T 897-2014 Antibacterial Ceramic Products Antibacterial Performance” by using pen scratching method; and appearance: whether there are defects such as glaze bubbles on the surface of the product is observed.

[0068] The results are shown in Table 2:

[0069] Table 2

[0070]

[0071] As can be seen from Table 2, the product prepared in the present application has good antibacterial effect. Since the self-made antibacterial silica micropowder is not used in Comparative Example 1 and Comparative Example 2, and the commercially available silica micropowder is selected, the test results are not comparative, and are not tested.

[0072] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0073] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, alternatives, and variations can be made in the embodiments without departing from the spirit and scope of the present application as defined by the appended claims and their equivalents.

Claims

1. A novel mid-range ceramic lustreless glaze of the type Potalan, characterized in that, By weight parts, including the following raw materials: dull frit 45-50 parts, antibacterial silicon powder 15-20 parts, Guizhou soil 5-8 parts, bright frit 10-15 parts, barium carbonate 4-6 parts, strontium carbonate 1-2 parts, ultra-fine aluminum powder 3-6 parts, zirconium silicate treated with titanate coupling agent 1-2 parts, gem blue colorant 8-12 parts and talc 15-20 parts; The antibacterial silicon powder is prepared by the following steps: The sodium silicate solution and the sodium bicarbonate aqueous solution are mixed, and a sol is obtained by stirring and reacting at a temperature of 90 DEG C; the sodium silicate solution and the sodium bicarbonate aqueous solution are continuously added to the sol, the pH value is adjusted to 5-6 by nitric acid, a mixed solution is obtained by adding lanthanum nitrate solution and zinc nitrate solution to the reaction system, and the stirring is continuously carried out for 1 h; after the reaction is completed, the silicon powder is obtained by washing with deionized water and grinding; the concentration of the sodium silicate solution is 1 mol / L, and the concentration of the sodium bicarbonate aqueous solution is 0.8 mol / L; the volume ratio of the sodium silicate solution to the sodium bicarbonate aqueous solution in the sol is 1.5:1; the concentration of lanthanum ions in the mixed solution is 0.01 mol / L; the concentration of zinc ions is 0.8 mol / L; the silicon powder is dispersed by stirring in anhydrous ethanol to obtain a suspension, a mixed solution is obtained by mixing n-butyl titanate and isopropanol, the temperature is set to 60 DEG C, the mixed solution is added dropwise to the suspension, the pH value is adjusted to 2 by nitric acid, and the stirring is continuously carried out for 5 h; after the reaction is completed, the antibacterial silicon powder is obtained by filtration, washing, drying and calcination at a high temperature of 350 DEG C for 2 h; the amount ratio of the silicon powder, the anhydrous ethanol, the n-butyl titanate and the isopropanol is 0.6-0.7 g:10 mL:2 g:10 mL.

2. A novel mid-range ceramic BORAN matt glaze according to claim 1, characterized in that, The antibacterial silicon powder is prepared by the following steps: According to the requirements of the formula, the ingredients are weighed, ball milled, and the fineness of the glaze is detected, and the fineness is controlled to be 0.01-0.05% on a 100-mesh sieve; after sieving, the glaze is used, and is fired in a natural gas roller kiln.

3. A novel mid-range ceramic body of the type disclosed in claim 2, characterized in that, The kiln temperature of the natural gas roller kiln is 1180-1230 DEG C.

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