High-thermal-stability electric porcelain glaze and preparation method thereof

Abstract

This invention discloses a high-thermal-stability electrical porcelain glaze, the raw materials of which include quartz powder, potassium feldspar, kaolin, calcite, ferric oxide, barium oxide, titanium dioxide, boron trioxide, zirconium dioxide, and additives. The electrical porcelain glaze layer prepared by the method described in this invention, through the coordination between the various components, exhibits excellent heat resistance and strength.

Description

Technical Field

[0001] This invention relates to the field of electrical porcelain glaze technology, and in particular to a high thermal stability electrical porcelain glaze and its preparation method. Background Technology

[0002] Porcelain glaze is a smooth, glassy layer covering the surface of porcelain insulators, with a thickness of approximately 0.2–0.3 mm. Porcelain glaze plays a crucial role in the performance of insulators, primarily in the following aspects: (1) Improving the chemical stability of insulators. Porcelain glaze forms a dense, impermeable glassy layer on the surface of the insulator, giving it higher surface hardness and resistance to external corrosive gases and liquids, thus improving its chemical stability. (2) Improving the strength and thermal stability of insulators. Porcelain glaze can fill and smooth various defects on the surface of the porcelain body—roughness, small holes, microcracks, etc.—improving the surface quality of the insulator. (3) Improving the insulator's anti-fouling ability. The smoothness and gloss of the glaze give the insulator good self-cleaning ability, making it less prone to contamination during operation and facilitating cleaning of dirty surfaces by operators. Summary of the Invention

[0003] This invention provides a high thermal stability electrical porcelain glaze, the raw materials of which include quartz powder, potassium feldspar, kaolin, calcite, ferric oxide, barium oxide, titanium dioxide, boron trioxide, zirconium dioxide, and additives; the preparation method of the additives is as follows:

[0004] (1) Prepare an aqueous solution of ethanol, an ethanol solution of aluminum isopropoxide, an aqueous solution of ammonium dihydrogen phosphate, and an ethanol solution of rhodium chloride; keep the aqueous solution of ethanol at a constant temperature of 60±3℃ in a water bath, reflux during the holding process, then stir the aqueous solution of ethanol, add ammonia water to the solution while stirring, continue stirring the solution at a constant temperature of 60±3℃ for more than 10 minutes after the addition is completed, then add tetraethyl orthosilicate, the ethanol solution of rhodium chloride, the ethanol solution of aluminum isopropoxide, and the aqueous solution of ammonium dihydrogen phosphate to the solution while stirring; after the addition is completed, keep the mixture at a constant temperature of 100±2℃ in a sealed reactor for more than 30 hours, then air cool to room temperature, separate the solid and liquid, wash the solid phase with deionized water more than 3 times, and dry at 80℃ for more than 30 minutes to obtain the dried solid phase A;

[0005] (2) Disperse the dried solid phase A in deionized water in a reactor to form a suspension; prepare a mixed aqueous solution of zinc acetate and lithium acetate, stir the suspension, and then add the mixed aqueous solution of zinc acetate and lithium acetate to the suspension under stirring to obtain a mixture. Stir the mixture for more than 20 minutes, and then add sodium carbonate to the mixture. After the addition is completed, immediately seal the reactor, heat to 150°C and keep warm for more than 10 hours. After the heat preservation is completed, air cool to room temperature, open the reactor, separate the solid and liquid, wash the solid phase with deionized water more than 3 times, and dry at 80°C for more than 30 minutes to obtain the additive.

[0006] Further, the raw materials described herein are in the following proportions by weight: 30 parts quartz powder, 10-15 parts potassium feldspar, 2-4 parts kaolin, 15-18 parts calcite, 5-8 parts ferric oxide, 2-3 parts barium oxide, 2-3 parts titanium dioxide, 1-5 parts boron trioxide, 1-3 parts zirconium dioxide, and 10-14 parts additives.

[0007] Further, in step (1), the volume percentage of ethanol in the aqueous solution of ethanol is 80%; the concentration of aluminum isopropoxide in the ethanol solution of aluminum isopropoxide is 8-10 g / 100 mL, and the solvent is ethanol; the concentration of ammonium dihydrogen phosphate in the aqueous solution of ammonium dihydrogen phosphate is 10-12 g / 100 mL, and the solvent is water; the ethanol solution of rhodium chloride is prepared by rhodium chloride trihydrate in a ratio of rhodium chloride trihydrate: ethanol = 3-5 g: 100 mL.

[0008] Further, the mass percentage of the solute in the ammonia solution is 20%; the volume ratio of the added ammonia solution, tetraethyl orthosilicate, the ethanol solution of rhodium chloride, the ethanol solution of aluminum isopropoxide, and the aqueous solution of ammonium dihydrogen phosphate to the volume of the aqueous ethanol solution is ammonia solution: tetraethyl orthosilicate: ethanol solution of rhodium chloride: ethanol solution of aluminum isopropoxide: aqueous solution of ammonium dihydrogen phosphate: aqueous solution of ethanol = 10-20: 25-28: 6-8: 14-15: 8-12: 100.

[0009] Further, in step (2), the solid-liquid mass ratio of the solid phase A dispersed in deionized water to form a suspension is solid phase A: deionized water = 1:60; in the mixed aqueous solution of zinc acetate and lithium acetate, the concentration of zinc acetate is 10-12 g / 100 mL, the concentration of lithium acetate is 8-10 g / 100 mL, and the solvent is water; the ratio of the mixed aqueous solution of zinc acetate and lithium acetate and sodium carbonate added to the suspension is suspension: mixed aqueous solution of zinc acetate and lithium acetate: sodium carbonate = 10 mL: 4-5 mL: 2-3 g.

[0010] This invention also discloses a method for applying the above-mentioned electrical porcelain glaze, the steps of which are as follows:

[0011] Step 1: Weigh each raw material component according to the stated weight proportions, mix each raw material component to form a mixed powder, and wet ball mill the mixed powder to obtain a uniform glaze slurry.

[0012] Step 2: Adjust the glaze slurry to a water content of 45%, and then apply it to the unglazed porcelain blank using the dip-dip method. After glazing, allow it to air dry naturally, then dry it in an electric heating drying oven for 8 hours. After drying, sinter it at 1220℃ for 1 hour, and then cool it to room temperature in the furnace to obtain the glazed porcelain.

[0013] Furthermore, the ball milling parameters are as follows: the mass ratio of material, ball, and water is material:ball:water = 1:1.6:0.8; the ball milling speed is 300 r / min; and the ball milling time is 20 h.

[0014] The beneficial effects of the present invention are as follows: the electric porcelain glaze layer prepared by the method of the present invention has good heat resistance stability and strength through the coordination between the components. Detailed Implementation

[0015] The present invention will be further described below with reference to the embodiments.

[0016] Example 1

[0017] A high thermal stability electrical porcelain glaze, comprising raw materials including quartz powder, potassium feldspar, kaolin, calcite, ferric oxide, barium oxide, titanium dioxide, boron trioxide, zirconium dioxide, and additives; the raw materials, by weight, are: 30 parts quartz powder, 10 parts potassium feldspar, 2 parts kaolin, 15 parts calcite, 5 parts ferric oxide, 2 parts barium oxide, 2 parts titanium dioxide, 1 part boron trioxide, 1 part zirconium dioxide, and 10 parts additives. The additives are prepared by:

[0018] (1) Prepare an aqueous solution of ethanol, an ethanol solution of aluminum isopropoxide, an aqueous solution of ammonium dihydrogen phosphate, and an ethanol solution of rhodium chloride; the volume percentage of ethanol in the aqueous solution of ethanol is 80%; the concentration of aluminum isopropoxide in the ethanol solution of aluminum isopropoxide is 8 g / 100 mL, and the solvent is ethanol; the concentration of ammonium dihydrogen phosphate in the aqueous solution of ammonium dihydrogen phosphate is 10 g / 100 mL, and the solvent is water; the ethanol solution of rhodium chloride is prepared by rhodium chloride trihydrate in a ratio of rhodium chloride trihydrate: ethanol = 3 g: 100 mL; keep the aqueous solution of ethanol at a constant temperature of 60±3℃ in a water bath, reflux during the holding process, then stir the aqueous solution of ethanol, add ammonia water to the solution while stirring, and continue stirring the solution at a constant temperature of 60±3℃ for 10 min after the addition is completed. Then, under stirring, tetraethyl orthosilicate, the ethanol solution of rhodium chloride, the ethanol solution of aluminum isopropoxide, and the aqueous solution of ammonium dihydrogen phosphate were simultaneously added to the solution; the mass percentage of the solute in the ammonia solution was 20%; the volume ratio of the added ammonia solution, tetraethyl orthosilicate, the ethanol solution of rhodium chloride, the ethanol solution of aluminum isopropoxide, and the aqueous solution of ammonium dihydrogen phosphate to the volume of the aqueous ethanol solution was ammonia solution: tetraethyl orthosilicate: ethanol solution of rhodium chloride: ethanol solution of aluminum isopropoxide: aqueous solution of ammonium dihydrogen phosphate: aqueous solution of ethanol = 10:25:6:14:8:100; after the addition was completed, the mixture was kept at 100±2℃ in a sealed reactor for 30h, then air-cooled to room temperature, and the solid and liquid were separated. The solid phase was washed three times with deionized water and dried at 80℃ for 30min to obtain the dried solid phase A.

[0019] (2) In a reaction vessel, the dried solid phase A is dispersed in deionized water to form a suspension; the solid-liquid mass ratio of the solid phase A dispersed in deionized water to form the suspension is solid phase A:deionized water = 1:60; a mixed aqueous solution of zinc acetate and lithium acetate is prepared, wherein the concentration of zinc acetate in the mixed aqueous solution of zinc acetate and lithium acetate is 10 g / 100 mL, the concentration of lithium acetate is 8 g / 100 mL, and the solvent is water; the suspension is stirred, and then the mixed aqueous solution of zinc acetate and lithium acetate is added to the suspension while stirring. The mixture was stirred for 20 minutes, and then sodium carbonate was added to the mixture. The ratio of the mixed aqueous solution of zinc acetate and lithium acetate to sodium carbonate was 10 mL: 4 mL: 2 g. After the addition was completed, the reaction vessel was immediately sealed and heated to 150°C for 10 hours. After the heating was completed, the mixture was cooled to room temperature. The reaction vessel was then opened, and the solid and liquid phases were separated. The solid phase was washed three times with deionized water and dried at 80°C for 30 minutes to obtain the additive.

[0020] This invention also discloses a method for applying the above-mentioned electrical porcelain glaze, the steps of which are as follows:

[0021] Step 1: Weigh each raw material component according to the stated weight proportions, mix the raw material components to form a mixed powder, and wet ball mill the mixed powder until uniform to obtain a glaze slurry; the ball milling parameters are: material, ball, water mass ratio is material: ball: water = 1:1.6:0.8; ball milling speed is 300 r / min, and ball milling time is 20 h;

[0022] Step 2: Adjust the glaze slurry to a water content of 45%, and then apply it to the unglazed porcelain blank using the dip-dip method. The glaze thickness is 0.3 mm. After glazing, allow it to air dry naturally, then dry it in an electric heating drying oven for 8 hours. After drying, sinter it at 1220℃ for 1 hour, and then cool it to room temperature in the furnace to obtain the glazed porcelain.

[0023] Example 2

[0024] A high thermal stability electrical porcelain glaze, comprising raw materials including quartz powder, potassium feldspar, kaolin, calcite, ferric oxide, barium oxide, titanium dioxide, boron trioxide, zirconium dioxide, and additives; the raw materials, by weight, are: 30 parts quartz powder, 12 parts potassium feldspar, 3 parts kaolin, 16 parts calcite, 6 parts ferric oxide, 2 parts barium oxide, 2 parts titanium dioxide, 2 parts boron trioxide, 2 parts zirconium dioxide, and 12 parts additives. The additives are prepared by:

[0025] (1) Prepare an aqueous solution of ethanol, an ethanol solution of aluminum isopropoxide, an aqueous solution of ammonium dihydrogen phosphate, and an ethanol solution of rhodium chloride; the volume percentage of ethanol in the aqueous solution of ethanol is 80%; the concentration of aluminum isopropoxide in the ethanol solution of aluminum isopropoxide is 9 g / 100 mL, and the solvent is ethanol; the concentration of ammonium dihydrogen phosphate in the aqueous solution of ammonium dihydrogen phosphate is 11 g / 100 mL, and the solvent is water; the ethanol solution of rhodium chloride is prepared by rhodium chloride trihydrate in a ratio of rhodium chloride trihydrate: ethanol = 4 g: 100 mL; keep the aqueous solution of ethanol at a constant temperature of 60±3℃ in a water bath, reflux during the holding process, then stir the aqueous solution of ethanol, add ammonia water to the solution while stirring, and continue stirring the solution at a constant temperature of 60±3℃ for 10 min after the addition is completed, then... Then, under stirring, tetraethyl orthosilicate, the ethanol solution of rhodium chloride, the ethanol solution of aluminum isopropoxide, and the aqueous solution of ammonium dihydrogen phosphate were simultaneously added to the solution; the mass percentage of the solute in the ammonia solution was 20%; the volume ratio of the added ammonia solution, tetraethyl orthosilicate, the ethanol solution of rhodium chloride, the ethanol solution of aluminum isopropoxide, and the aqueous solution of ammonium dihydrogen phosphate to the volume of the aqueous ethanol solution was ammonia solution: tetraethyl orthosilicate: ethanol solution of rhodium chloride: ethanol solution of aluminum isopropoxide: aqueous solution of ammonium dihydrogen phosphate: aqueous solution of ethanol = 12:26:7:14:10:100; after the addition was completed, the mixture was kept at 100±2℃ for 30h in a sealed reactor, and then air-cooled to room temperature. The solid and liquid phases were separated, the solid phase was washed three times with deionized water, and dried at 80℃ for 30min to obtain the dried solid phase A.

[0026] (2) In a reaction vessel, the dried solid phase A is dispersed in deionized water to form a suspension; the solid-liquid mass ratio of the solid phase A dispersed in deionized water to form the suspension is solid phase A:deionized water = 1:60; a mixed aqueous solution of zinc acetate and lithium acetate is prepared, wherein the concentration of zinc acetate in the mixed aqueous solution of zinc acetate and lithium acetate is 11 g / 100 mL, the concentration of lithium acetate is 9 g / 100 mL, and the solvent is water; the suspension is stirred, and then the mixed aqueous solution of zinc acetate and lithium acetate is added to the suspension while stirring. The mixture was stirred for 20 minutes, and then sodium carbonate was added to the mixture. The ratio of the mixed aqueous solution of zinc acetate and lithium acetate to sodium carbonate was 10 mL: 4 mL: 2 g. After the addition was completed, the reaction vessel was immediately sealed and heated to 150°C for 10 hours. After the heating was completed, the mixture was cooled to room temperature. The reaction vessel was then opened, and the solid and liquid phases were separated. The solid phase was washed three times with deionized water and dried at 80°C for 30 minutes to obtain the additive.

[0027] This invention also discloses a method for applying the above-mentioned electrical porcelain glaze, the steps of which are as follows:

[0028] Step 1: Weigh each raw material component according to the stated weight proportions, mix the raw material components to form a mixed powder, and wet ball mill the mixed powder until uniform to obtain a glaze slurry; the ball milling parameters are: material, ball, water mass ratio is material: ball: water = 1:1.6:0.8; ball milling speed is 300 r / min, and ball milling time is 20 h;

[0029] Step 2: Adjust the glaze slurry to a water content of 45%, and then apply it to the unglazed porcelain blank using the dip-dip method. The glaze thickness is 0.3 mm. After glazing, allow it to air dry naturally, then dry it in an electric heating drying oven for 8 hours. After drying, sinter it at 1220℃ for 1 hour, and then cool it to room temperature in the furnace to obtain the glazed porcelain.

[0030] Example 3

[0031] A high thermal stability electrical porcelain glaze comprises quartz powder, potassium feldspar, kaolin, calcite, ferric oxide, barium oxide, titanium dioxide, boron trioxide, zirconium dioxide, and additives. The raw materials, by weight, are: 30 parts quartz powder, 14 parts potassium feldspar, 3 parts kaolin, 17 parts calcite, 7 parts ferric oxide, 3 parts barium oxide, 3 parts titanium dioxide, 4 parts boron trioxide, 2 parts zirconium dioxide, and 12 parts additives. The additives are prepared by:

[0032] (1) Prepare an aqueous solution of ethanol, an ethanol solution of aluminum isopropoxide, an aqueous solution of ammonium dihydrogen phosphate, and an ethanol solution of rhodium chloride; the volume percentage of ethanol in the aqueous solution of ethanol is 80%; the concentration of aluminum isopropoxide in the ethanol solution of aluminum isopropoxide is 9 g / 100 mL, and the solvent is ethanol; the concentration of ammonium dihydrogen phosphate in the aqueous solution of ammonium dihydrogen phosphate is 11 g / 100 mL, and the solvent is water; the ethanol solution of rhodium chloride is prepared by rhodium chloride trihydrate in a ratio of rhodium chloride trihydrate: ethanol = 4 g: 100 mL; keep the aqueous solution of ethanol at a constant temperature of 60±3℃ in a water bath, reflux during the holding process, then stir the aqueous solution of ethanol, add ammonia water to the solution while stirring, and continue stirring the solution at a constant temperature of 60±3℃ for 10 min after the addition is completed, then... Then, under stirring, tetraethyl orthosilicate, the ethanol solution of rhodium chloride, the ethanol solution of aluminum isopropoxide, and the aqueous solution of ammonium dihydrogen phosphate were simultaneously added to the solution; the mass percentage of the solute in the ammonia solution was 20%; the volume ratio of the added ammonia solution, tetraethyl orthosilicate, the ethanol solution of rhodium chloride, the ethanol solution of aluminum isopropoxide, and the aqueous solution of ammonium dihydrogen phosphate to the volume of the aqueous ethanol solution was ammonia solution: tetraethyl orthosilicate: ethanol solution of rhodium chloride: ethanol solution of aluminum isopropoxide: aqueous solution of ammonium dihydrogen phosphate: aqueous solution of ethanol = 16:27:7:15:10:100; after the addition was completed, the mixture was kept at 100±2℃ in a sealed reactor for 30h, then air-cooled to room temperature, and the solid and liquid were separated. The solid phase was washed three times with deionized water and dried at 80℃ for 30min to obtain the dried solid phase A.

[0033] (2) In a reaction vessel, the dried solid phase A is dispersed in deionized water to form a suspension; the solid-liquid mass ratio of the solid phase A dispersed in deionized water to form the suspension is solid phase A:deionized water = 1:60; a mixed aqueous solution of zinc acetate and lithium acetate is prepared, wherein the concentration of zinc acetate in the mixed aqueous solution of zinc acetate and lithium acetate is 11 g / 100 mL, the concentration of lithium acetate is 9 g / 100 mL, and the solvent is water; the suspension is stirred, and then the mixed aqueous solution of zinc acetate and lithium acetate is added to the suspension while stirring. The mixture was stirred for 20 minutes, and then sodium carbonate was added to the mixture. The ratio of the mixed aqueous solution of zinc acetate and lithium acetate to sodium carbonate was 10 mL: 5 mL: 3 g. After the addition was completed, the reaction vessel was immediately sealed and heated to 150°C for 10 hours. After the heating was completed, the mixture was cooled to room temperature. The reaction vessel was then opened, and the solid and liquid phases were separated. The solid phase was washed three times with deionized water and dried at 80°C for 30 minutes to obtain the additive.

[0034] This invention also discloses a method for applying the above-mentioned electrical porcelain glaze, the steps of which are as follows:

[0035] Step 1: Weigh each raw material component according to the stated weight proportions, mix the raw material components to form a mixed powder, and wet ball mill the mixed powder until uniform to obtain a glaze slurry; the ball milling parameters are: material, ball, water mass ratio is material: ball: water = 1:1.6:0.8; ball milling speed is 300 r / min, and ball milling time is 20 h;

[0036] Step 2: Adjust the glaze slurry to a water content of 45%, and then apply it to the unglazed porcelain blank using the dip-dip method. The glaze thickness is 0.3 mm. After glazing, allow it to air dry naturally, then dry it in an electric heating drying oven for 8 hours. After drying, sinter it at 1220℃ for 1 hour, and then cool it to room temperature in the furnace to obtain the glazed porcelain.

[0037] Example 4

[0038] A high thermal stability electrical porcelain glaze, comprising raw materials including quartz powder, potassium feldspar, kaolin, calcite, ferric oxide, barium oxide, titanium dioxide, boron trioxide, zirconium dioxide, and additives; the raw materials, by weight, are: 30 parts quartz powder, 15 parts potassium feldspar, 4 parts kaolin, 18 parts calcite, 8 parts ferric oxide, 3 parts barium oxide, 3 parts titanium dioxide, 5 parts boron trioxide, 3 parts zirconium dioxide, and 14 parts additives. The additives are prepared by:

[0039] (1) Prepare an aqueous solution of ethanol, an ethanol solution of aluminum isopropoxide, an aqueous solution of ammonium dihydrogen phosphate, and an ethanol solution of rhodium chloride; the volume percentage of ethanol in the aqueous solution of ethanol is 80%; the concentration of aluminum isopropoxide in the ethanol solution of aluminum isopropoxide is 10 g / 100 mL, and the solvent is ethanol; the concentration of ammonium dihydrogen phosphate in the aqueous solution of ammonium dihydrogen phosphate is 12 g / 100 mL, and the solvent is water; the ethanol solution of rhodium chloride is prepared by rhodium chloride trihydrate in a ratio of rhodium chloride trihydrate: ethanol = 5 g: 100 mL; keep the aqueous solution of ethanol at a constant temperature of 60±3℃ in a water bath, reflux during the holding process, then stir the aqueous solution of ethanol, add ammonia water to the solution while stirring, and continue stirring the solution at a constant temperature of 60±3℃ for 10 min after the addition is completed. Then, under stirring, tetraethyl orthosilicate, the ethanol solution of rhodium chloride, the ethanol solution of aluminum isopropoxide, and the aqueous solution of ammonium dihydrogen phosphate were simultaneously added to the solution; the mass percentage of the solute in the ammonia solution was 20%; the volume ratio of the added ammonia solution, tetraethyl orthosilicate, the ethanol solution of rhodium chloride, the ethanol solution of aluminum isopropoxide, and the aqueous solution of ammonium dihydrogen phosphate to the volume of the aqueous ethanol solution was ammonia solution: tetraethyl orthosilicate: ethanol solution of rhodium chloride: ethanol solution of aluminum isopropoxide: aqueous solution of ammonium dihydrogen phosphate: aqueous solution of ethanol = 20:28:8:15:12:100; after the addition was completed, the mixture was kept at 100±2℃ for 30h in a sealed reactor, and then air-cooled to room temperature. The solid and liquid phases were separated, the solid phase was washed three times with deionized water, and dried at 80℃ for 30min to obtain the dried solid phase A.

[0040] (2) In a reaction vessel, the dried solid phase A is dispersed in deionized water to form a suspension; the solid-liquid mass ratio of the solid phase A dispersed in deionized water to form the suspension is solid phase A: deionized water = 1:60; a mixed aqueous solution of zinc acetate and lithium acetate is prepared, wherein the concentration of zinc acetate in the mixed aqueous solution of zinc acetate and lithium acetate is 12 g / 100 mL, the concentration of lithium acetate is 10 g / 100 mL, and the solvent is water; the suspension is stirred, and then the mixed aqueous solution of zinc acetate and lithium acetate is added to the suspension while stirring. The mixture was stirred for 20 minutes, and then sodium carbonate was added to the mixture. The ratio of the mixed aqueous solution of zinc acetate and lithium acetate to sodium carbonate was 10 mL: 5 mL: 3 g. After the addition was completed, the reaction vessel was immediately sealed and heated to 150°C for 10 hours. After the heating was completed, the mixture was cooled to room temperature. The reaction vessel was then opened, and the solid and liquid phases were separated. The solid phase was washed three times with deionized water and dried at 80°C for 30 minutes to obtain the additive.

[0041] This invention also discloses a method for applying the above-mentioned electrical porcelain glaze, the steps of which are as follows:

[0042] Step 1: Weigh each raw material component according to the stated weight proportions, mix the raw material components to form a mixed powder, and wet ball mill the mixed powder until uniform to obtain a glaze slurry; the ball milling parameters are: material, ball, water mass ratio is material: ball: water = 1:1.6:0.8; ball milling speed is 300 r / min, and ball milling time is 20 h;

[0043] Step 2: Adjust the glaze slurry to a water content of 45%, and then apply it to the unglazed porcelain blank using the dip-dip method. The glaze thickness is 0.3 mm. After glazing, allow it to air dry naturally, then dry it in an electric heating drying oven for 8 hours. After drying, sinter it at 1220℃ for 1 hour, and then cool it to room temperature in the furnace to obtain the glazed porcelain.

[0044] Comparative Example 1

[0045] A comparative electric porcelain glaze comprises quartz powder, potassium feldspar, kaolin, calcite, ferric oxide, barium oxide, titanium dioxide, boron trioxide, zirconium dioxide, and additives. The raw materials, by weight, are: 30 parts quartz powder, 14 parts potassium feldspar, 3 parts kaolin, 17 parts calcite, 7 parts ferric oxide, 3 parts barium oxide, 3 parts titanium dioxide, 4 parts boron trioxide, 2 parts zirconium dioxide, and 12 parts additives. The additives are prepared by:

[0046] (1) Prepare an aqueous solution of ethanol, an ethanol solution of aluminum isopropoxide, and an aqueous solution of ammonium dihydrogen phosphate; the volume percentage of ethanol in the aqueous solution of ethanol is 80%; the concentration of aluminum isopropoxide in the ethanol solution of aluminum isopropoxide is 9 g / 100 mL, and the solvent is ethanol; the concentration of ammonium dihydrogen phosphate in the aqueous solution of ammonium dihydrogen phosphate is 11 g / 100 mL, and the solvent is water; keep the aqueous solution of ethanol in a water bath at a constant temperature of 60±3℃, and reflux during the holding process, then stir the aqueous solution of ethanol, add ammonia water to the solution while stirring, continue stirring the solution at a constant temperature of 60±3℃ for 10 min after the addition is completed, and then add ammonia water to the solution while stirring. Tetraethyl orthosilicate, an ethanolic solution of aluminum isopropoxide, and an aqueous solution of ammonium dihydrogen phosphate were added. The mass percentage of the solute in the ammonia solution was 20%. The volume ratio of the added ammonia solution, tetraethyl orthosilicate, the ethanolic solution of aluminum isopropoxide, and the aqueous solution of ammonium dihydrogen phosphate to the volume of the aqueous ethanol solution was ammonia solution: tetraethyl orthosilicate: ethanolic solution of aluminum isopropoxide: aqueous solution of ammonium dihydrogen phosphate: aqueous solution of ethanol = 16:27:15:10:100. After the addition was completed, the mixture was kept at 100±2℃ for 30h in a sealed reactor, then air-cooled to room temperature, and the solid and liquid phases were separated. The solid phase was washed three times with deionized water and dried at 80℃ for 30min to obtain the dried solid phase A of this comparative example.

[0047] (2) In a reaction vessel, the dried solid phase A is dispersed in deionized water to form a suspension; the solid-liquid mass ratio of the solid phase A dispersed in deionized water to form the suspension is solid phase A:deionized water = 1:60; a mixed aqueous solution of zinc acetate and lithium acetate is prepared, wherein the concentration of zinc acetate in the mixed aqueous solution of zinc acetate and lithium acetate is 11 g / 100 mL, the concentration of lithium acetate is 9 g / 100 mL, and the solvent is water; the suspension is stirred, and then the mixed aqueous solution of zinc acetate and lithium acetate is added to the suspension while stirring. The mixture was stirred for 20 minutes, and then sodium carbonate was added to the mixture. The ratio of the mixed aqueous solution of zinc acetate and lithium acetate to sodium carbonate was 10 mL: 5 mL: 3 g. After the addition was completed, the reaction vessel was immediately sealed and heated to 150°C for 10 hours. After the heating was completed, the mixture was cooled to room temperature. The reaction vessel was then opened, and the solid and liquid phases were separated. The solid phase was washed three times with deionized water and dried at 80°C for 30 minutes to obtain the additive.

[0048] This invention also discloses a method for applying the above-mentioned electrical porcelain glaze, the steps of which are as follows:

[0049] Step 1: Weigh each raw material component according to the stated weight proportions, mix the raw material components to form a mixed powder, and wet ball mill the mixed powder until uniform to obtain a glaze slurry; the ball milling parameters are: material, ball, water mass ratio is material: ball: water = 1:1.6:0.8; ball milling speed is 300 r / min, and ball milling time is 20 h;

[0050] Step 2: Adjust the glaze slurry to a water content of 45%, and then apply it to the unglazed porcelain blank using the dip-dip method. The glaze thickness is 0.3 mm. After glazing, allow it to air dry naturally, then dry it in an electric heating drying oven for 8 hours. After drying, sinter it at 1220℃ for 1 hour, and then cool it to room temperature in the furnace to obtain the glazed porcelain.

[0051] Comparative Example 2

[0052] A comparative electric porcelain glaze comprises quartz powder, potassium feldspar, kaolin, calcite, ferric oxide, barium oxide, titanium dioxide, boron trioxide, zirconium dioxide, and additives. The raw materials, by weight, are: 30 parts quartz powder, 14 parts potassium feldspar, 3 parts kaolin, 17 parts calcite, 7 parts ferric oxide, 3 parts barium oxide, 3 parts titanium dioxide, 4 parts boron trioxide, 2 parts zirconium dioxide, and 12 parts additives. The additives are prepared by:

[0053] (1) Prepare an aqueous solution of ethanol, an ethanol solution of aluminum isopropoxide, and an ethanol solution of rhodium chloride; the volume percentage of ethanol in the aqueous solution of ethanol is 80%; the concentration of aluminum isopropoxide in the ethanol solution of aluminum isopropoxide is 9 g / 100 mL, and the solvent is ethanol; the ethanol solution of rhodium chloride is prepared by rhodium chloride trihydrate in a ratio of rhodium chloride trihydrate: ethanol = 4 g: 100 mL; keep the aqueous solution of ethanol in a water bath at a constant temperature of 60±3℃, reflux during the holding process, then stir the aqueous solution of ethanol, add ammonia water to the solution while stirring, continue stirring the solution at a constant temperature of 60±3℃ for 10 min after the addition is completed, and then stir the solution while stirring. Tetraethyl orthosilicate, the ethanol solution of rhodium chloride, and the ethanol solution of aluminum isopropoxide are simultaneously added to the solution. The mass percentage of the solute in the ammonia solution is 20%. The volume ratio of the added ammonia solution, tetraethyl orthosilicate, the ethanol solution of rhodium chloride, and the ethanol solution of aluminum isopropoxide to the volume of the aqueous ethanol solution is ammonia solution: tetraethyl orthosilicate: ethanol solution of rhodium chloride: ethanol solution of aluminum isopropoxide: aqueous ethanol solution = 16:27:7:15:100. After the addition is completed, the mixture is kept at 100±2℃ for 30h in a sealed reactor, then air-cooled to room temperature, and the solid and liquid are separated. The solid phase is washed three times with deionized water and dried at 80℃ for 30min to obtain the dried solid phase A.

[0054] (2) In a reaction vessel, the dried solid phase A is dispersed in deionized water to form a suspension; the solid-liquid mass ratio of the solid phase A dispersed in deionized water to form the suspension is solid phase A:deionized water = 1:60; a mixed aqueous solution of zinc acetate and lithium acetate is prepared, wherein the concentration of zinc acetate in the mixed aqueous solution of zinc acetate and lithium acetate is 11 g / 100 mL, the concentration of lithium acetate is 9 g / 100 mL, and the solvent is water; the suspension is stirred, and then the mixed aqueous solution of zinc acetate and lithium acetate is added to the suspension while stirring. The mixture was stirred for 20 minutes, and then sodium carbonate was added to the mixture. The ratio of the mixed aqueous solution of zinc acetate and lithium acetate to sodium carbonate was 10 mL: 5 mL: 3 g. After the addition was completed, the reaction vessel was immediately sealed and heated to 150°C for 10 hours. After the heating was completed, the mixture was cooled to room temperature. The reaction vessel was then opened, and the solid and liquid phases were separated. The solid phase was washed three times with deionized water and dried at 80°C for 30 minutes to obtain the additive.

[0055] This invention also discloses a method for applying the above-mentioned electrical porcelain glaze, the steps of which are as follows:

[0056] Step 1: Weigh each raw material component according to the stated weight proportions, mix the raw material components to form a mixed powder, and wet ball mill the mixed powder until uniform to obtain a glaze slurry; the ball milling parameters are: material, ball, water mass ratio is material: ball: water = 1:1.6:0.8; ball milling speed is 300 r / min, and ball milling time is 20 h;

[0057] Step 2: Adjust the glaze slurry to a water content of 45%, and then apply it to the unglazed porcelain blank using the dip-dip method. The glaze thickness is 0.3 mm. After glazing, allow it to air dry naturally, then dry it in an electric heating drying oven for 8 hours. After drying, sinter it at 1220℃ for 1 hour, and then cool it to room temperature in the furnace to obtain the glazed porcelain.

[0058] Comparative Example 3

[0059] A comparative electric porcelain glaze comprises quartz powder, potassium feldspar, kaolin, calcite, ferric oxide, barium oxide, titanium dioxide, boron trioxide, zirconium dioxide, and additives. The raw materials, by weight, are: 30 parts quartz powder, 14 parts potassium feldspar, 3 parts kaolin, 17 parts calcite, 7 parts ferric oxide, 3 parts barium oxide, 3 parts titanium dioxide, 4 parts boron trioxide, 2 parts zirconium dioxide, and 12 parts additives. The additives are prepared by:

[0060] (1) Prepare an aqueous solution of ethanol, an ethanol solution of aluminum isopropoxide, an aqueous solution of ammonium dihydrogen phosphate, and an ethanol solution of rhodium chloride; the volume percentage of ethanol in the aqueous solution of ethanol is 80%; the concentration of aluminum isopropoxide in the ethanol solution of aluminum isopropoxide is 9 g / 100 mL, and the solvent is ethanol; the concentration of ammonium dihydrogen phosphate in the aqueous solution of ammonium dihydrogen phosphate is 11 g / 100 mL, and the solvent is water; the ethanol solution of rhodium chloride is prepared by rhodium chloride trihydrate in a ratio of rhodium chloride trihydrate: ethanol = 4 g: 100 mL; keep the aqueous solution of ethanol at a constant temperature of 60±3℃ in a water bath, reflux during the holding process, then stir the aqueous solution of ethanol, add ammonia water to the solution while stirring, and continue stirring the solution at a constant temperature of 60±3℃ for 10 min after the addition is completed, then... Then, under stirring, tetraethyl orthosilicate, the ethanol solution of rhodium chloride, the ethanol solution of aluminum isopropoxide, and the aqueous solution of ammonium dihydrogen phosphate were simultaneously added to the solution; the mass percentage of the solute in the ammonia solution was 20%; the volume ratio of the added ammonia solution, tetraethyl orthosilicate, the ethanol solution of rhodium chloride, the ethanol solution of aluminum isopropoxide, and the aqueous solution of ammonium dihydrogen phosphate to the volume of the aqueous ethanol solution was ammonia solution: tetraethyl orthosilicate: ethanol solution of rhodium chloride: ethanol solution of aluminum isopropoxide: aqueous solution of ammonium dihydrogen phosphate: aqueous solution of ethanol = 16:27:7:15:10:100; after the addition was completed, the mixture was kept at 100±2℃ in a sealed reactor for 30h, then air-cooled to room temperature, and the solid and liquid were separated. The solid phase was washed three times with deionized water and dried at 80℃ for 30min to obtain the dried solid phase A.

[0061] (2) In a reactor, the dried solid phase A is dispersed in deionized water to form a suspension; the solid-liquid mass ratio of the solid phase A dispersed in deionized water to form a suspension is solid phase A: deionized water = 1:60; prepare an aqueous solution of zinc acetate, wherein the concentration of zinc acetate in the aqueous solution of zinc acetate is 11g / 100mL, and the solvent is water; stir the suspension, and then add the aqueous solution of zinc acetate to the suspension under stirring to obtain a mixture; stir the mixture for 20min, and then add sodium carbonate to the mixture, wherein the ratio of the aqueous solution of zinc acetate to sodium carbonate added to the suspension is suspension: aqueous solution of zinc acetate: sodium carbonate = 10mL: 5mL: 3g; immediately after the addition is completed, seal the reactor, heat to 150℃ and keep warm for 10h, after the heat preservation is completed, air cool to room temperature, open the reactor, separate the solid and liquid, wash the solid phase with deionized water 3 times, and dry at 80℃ for 30min to obtain the additive.

[0062] This invention also discloses a method for applying the above-mentioned electrical porcelain glaze, the steps of which are as follows:

[0063] Step 1: Weigh each raw material component according to the stated weight proportions, mix the raw material components to form a mixed powder, and wet ball mill the mixed powder until uniform to obtain a glaze slurry; the ball milling parameters are: material, ball, water mass ratio is material: ball: water = 1:1.6:0.8; ball milling speed is 300 r / min, and ball milling time is 20 h;

[0064] Step 2: Adjust the glaze slurry to a water content of 45%, and then apply it to the unglazed porcelain blank using the dip-dip method. The glaze thickness is 0.3 mm. After glazing, allow it to air dry naturally, then dry it in an electric heating drying oven for 8 hours. After drying, sinter it at 1220℃ for 1 hour, and then cool it to room temperature in the furnace to obtain the glazed porcelain.

[0065] Example 5

[0066] 1. Thermal stability test: The glazed electric porcelain prepared by the method described in each embodiment and comparative example was first heated to 160°C and kept at that temperature for 30 minutes. Then, it was taken out and quickly immersed in 20°C water containing red dye. After soaking for 10 minutes, it was taken out, the surface was wiped dry, and it was observed whether there were any cracks. If there were no cracks, the test group was heated to an additional 10°C (i.e., 170°C, 180°C, and so on). The above heating, holding, soaking and cooling process was repeated until at least one crack was found. This crack was taken as the heat resistance temperature of the sample group. The results are shown in Table 1.

[0067] 2. The unglazed porcelain blanks were sintered at 1220℃ for 1 hour and then cooled to room temperature in the furnace to obtain a control group of unglazed porcelain blanks. The flexural strength of the glazed porcelain blanks and the control group of unglazed porcelain blanks prepared by the methods described in the above embodiments and comparative examples were tested using the same test method. The results are shown in Table 1.

[0068] Table 1

[0069]

[0070]

[0071] As shown in Table 1, the electric porcelain glaze prepared by the method of the present invention exhibits good heat resistance and strength through the coordination of its components. Comparing Example 3 of this application with the comparative examples, it can be seen that doping the glaze with rhodium, phosphorus, and lithium elements can improve the bonding strength of the particles in the glaze and significantly reduce the coefficient of expansion during the sintering process, thereby reducing the probability of cracking. Macroscopically, this manifests as an improvement in the heat resistance and mechanical properties of the electric porcelain glaze.

[0072] The technical solutions provided by the present invention have been described in detail above. For those skilled in the art, there will be changes in specific implementation methods and application scope based on the ideas of the embodiments of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A high thermal stability electrical porcelain glaze, characterized in that, The raw materials include quartz powder, potassium feldspar, kaolin, calcite, ferric oxide, barium oxide, titanium dioxide, boron trioxide, zirconium dioxide, and additives; the preparation method of the additives is as follows: (1) Prepare an aqueous solution of ethanol, an ethanol solution of aluminum isopropoxide, an aqueous solution of ammonium dihydrogen phosphate, and an ethanol solution of rhodium chloride; keep the aqueous solution of ethanol at a constant temperature of 60±3℃ in a water bath, reflux during the holding process, then stir the aqueous solution of ethanol, add ammonia water to the solution while stirring, continue stirring the solution at a constant temperature of 60±3℃ for more than 10 minutes after the addition is completed, then add tetraethyl orthosilicate, the ethanol solution of rhodium chloride, the ethanol solution of aluminum isopropoxide, and the aqueous solution of ammonium dihydrogen phosphate to the solution while stirring; after the addition is completed, keep the mixture at a constant temperature of 100±2℃ in a sealed reactor for more than 30 hours, then air cool to room temperature, separate the solid and liquid, wash the solid phase with deionized water more than 3 times, and dry at 80℃ for more than 30 minutes to obtain the dried solid phase A; (2) Disperse the dried solid phase A in deionized water in a reactor to form a suspension; prepare a mixed aqueous solution of zinc acetate and lithium acetate, stir the suspension, and then add the mixed aqueous solution of zinc acetate and lithium acetate to the suspension under stirring to obtain a mixture. Stir the mixture for more than 20 minutes, and then add sodium carbonate to the mixture. After the addition is completed, immediately seal the reactor, heat to 150°C and keep warm for more than 10 hours. After the heat preservation is completed, air cool to room temperature, open the reactor, separate the solid and liquid, wash the solid phase with deionized water more than 3 times, and dry at 80°C for more than 30 minutes to obtain the additive.

2. The high thermal stability electrical porcelain glaze according to claim 1, characterized in that, The raw materials described herein are in the following proportions by weight: 30 parts quartz powder, 10-15 parts potassium feldspar, 2-4 parts kaolin, 15-18 parts calcite, 5-8 parts ferric oxide, 2-3 parts barium oxide, 2-3 parts titanium dioxide, 1-5 parts boron trioxide, 1-3 parts zirconium dioxide, and 10-14 parts additives.

3. The high thermal stability electrical porcelain glaze according to claim 1, characterized in that, In step (1), the volume percentage of ethanol in the aqueous solution of ethanol is 80%; the concentration of aluminum isopropoxide in the ethanol solution of aluminum isopropoxide is 8-10 g / 100 mL, and the solvent is ethanol; the concentration of ammonium dihydrogen phosphate in the aqueous solution of ammonium dihydrogen phosphate is 10-12 g / 100 mL, and the solvent is water; the ethanol solution of rhodium chloride is prepared by rhodium chloride trihydrate in a ratio of rhodium chloride trihydrate: ethanol = 3-5 g: 100 mL.

4. The high thermal stability electrical porcelain glaze according to claim 1, characterized in that, The mass percentage of the solute in the ammonia solution is 20%; the volume ratio of the added ammonia solution, tetraethyl orthosilicate, the ethanol solution of rhodium chloride, the ethanol solution of aluminum isopropoxide, and the aqueous solution of ammonium dihydrogen phosphate to the volume of the aqueous ethanol solution is ammonia solution: tetraethyl orthosilicate: ethanol solution of rhodium chloride: ethanol solution of aluminum isopropoxide: aqueous solution of ammonium dihydrogen phosphate: aqueous solution of ethanol = 10-20: 25-28: 6-8: 14-15: 8-12:

100.

5. The high thermal stability electrical porcelain glaze according to claim 1, characterized in that, In step (2), the solid-liquid mass ratio of the solid phase A dispersed in deionized water to form a suspension is solid phase A: deionized water = 1:60; in the mixed aqueous solution of zinc acetate and lithium acetate, the concentration of zinc acetate is 10-12 g / 100 mL, the concentration of lithium acetate is 8-10 g / 100 mL, and the solvent is water; the ratio of the mixed aqueous solution of zinc acetate and lithium acetate and sodium carbonate added to the suspension is suspension: mixed aqueous solution of zinc acetate and lithium acetate: sodium carbonate = 10 mL: 4-5 mL: 2-3 g.

6. The glazing method for electrical porcelain glaze as described in claim 2, characterized in that, The steps are as follows: Step 1: Weigh each raw material component according to the stated weight proportions, mix each raw material component to form a mixed powder, and wet ball mill the mixed powder to obtain a uniform glaze slurry. Step 2: Adjust the glaze slurry to a water content of 45%, and then apply it to the unglazed porcelain blank using the dip-dip method. After glazing, allow it to air dry naturally, then dry it in an electric heating drying oven for 8 hours. After drying, sinter it at 1220℃ for 1 hour, and then cool it to room temperature in the furnace to obtain the glazed porcelain.

7. A glazing method according to claim 6, characterized in that, The ball milling parameters are as follows: the mass ratio of material, balls, and water is material:ball:water = 1:1.6:0.8; the ball milling speed is 300 r / min; and the ball milling time is 20 h.

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