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CN-117985937-B - High-thermal-stability electric porcelain glaze and preparation method thereof

CN117985937BCN 117985937 BCN117985937 BCN 117985937BCN-117985937-B

Abstract

The invention discloses a high-thermal-stability electric porcelain glaze, which comprises quartz powder, potassium feldspar, kaolin, calcite, ferric oxide, barium oxide, titanium dioxide, diboron trioxide, zirconium dioxide and additives. The electric porcelain glaze layer prepared by the method has good heat-resistant stability and strength through the cooperation of the components.

Inventors

  • OUYANG YI
  • Luo Shazhou
  • YU XIANGHUA
  • ZHOU JIANBO
  • YIN WENLIN
  • XIE JUNKUI
  • WU XI

Assignees

  • 萍乡市海克拉斯电瓷有限公司

Dates

Publication Date
20260505
Application Date
20240131

Claims (7)

  1. 1. The high-thermal-stability electric porcelain glaze is characterized by comprising quartz powder, potassium feldspar, kaolin, calcite, ferric oxide, barium oxide, titanium dioxide, diboron trioxide, zirconium dioxide and additives, wherein the preparation method of the additives comprises the following steps: (1) Preparing an aqueous solution of ethanol, preparing an aqueous solution of aluminum isopropoxide, preparing an aqueous solution of ammonium dihydrogen phosphate and preparing an aqueous solution of rhodium chloride, carrying out water bath constant temperature on the aqueous solution of ethanol to 60+/-3 ℃, preserving heat, condensing and refluxing in the heat preservation process, stirring the aqueous solution of ethanol, adding ammonia water into the solution in a stirring state, continuing stirring the solution at the constant temperature of 60+/-3 ℃ for more than 10min after the addition is finished, simultaneously adding tetraethoxysilane, the aqueous solution of rhodium chloride, the aqueous solution of aluminum isopropoxide and the aqueous solution of ammonium dihydrogen phosphate into the solution in the stirring state, carrying out heat preservation on the mixed solution in a sealed reaction kettle for more than 100+/-2 ℃ for 30h after the addition is finished, then carrying out air cooling to normal temperature, carrying out solid-liquid separation, washing a solid phase with deionized water for more than 3 times, and drying for more than 30min at 80 ℃ to obtain a dried solid phase A; (2) Dispersing the dried solid phase A in deionized water to form a suspension, preparing a mixed aqueous solution of zinc acetate and lithium acetate, stirring the suspension, adding the mixed aqueous solution of zinc acetate and lithium acetate into the suspension in a stirring state to obtain a mixed solution, stirring the mixed solution for more than 20min, adding sodium carbonate into the mixed solution, immediately sealing the reaction kettle after the addition, heating to 150 ℃ for more than 10h, air-cooling to normal temperature after the heat preservation is finished, opening the reaction kettle, separating solid from liquid, washing the solid phase with deionized water for more than 3 times, and drying at 80 ℃ for more than 30min to obtain the additive.
  2. 2. The high-thermal-stability electric porcelain glaze is characterized by comprising, by weight, 30 parts of quartz powder, 10-15 parts of potassium feldspar, 2-4 parts of kaolin, 15-18 parts of calcite, 5-8 parts of ferric oxide, 2-3 parts of barium oxide, 2-3 parts of titanium dioxide, 1-5 parts of diboron trioxide, 1-3 parts of zirconium dioxide and 10-14 parts of additives.
  3. 3. The high-thermal-stability electric porcelain glaze is characterized in that in the step (1), the volume percentage of ethanol in the ethanol aqueous solution is 80%, the concentration of aluminum isopropoxide in the aluminum isopropoxide ethanol solution is 8-10 g/100mL, the solvent is ethanol, the concentration of ammonium dihydrogen phosphate in the ammonium dihydrogen phosphate aqueous solution is 10-12 g/100mL, the solvent is water, and the rhodium chloride ethanol solution is rhodium chloride trihydrate, wherein the rhodium chloride trihydrate is prepared according to the proportion of ethanol=3-5 g/100 mL.
  4. 4. The high-thermal-stability electric porcelain glaze according to claim 1, wherein the mass percentage of solute in the ammonia water is 20%, and the addition volume ratio of the ammonia water, ethyl orthosilicate, the ethanol solution of rhodium chloride, the ethanol solution of aluminum isopropoxide and the water solution of ammonium dihydrogen phosphate to the water solution of ethanol is ammonia water, ethyl orthosilicate, ethanol solution of rhodium chloride, ethanol solution of aluminum isopropoxide, water solution of ammonium dihydrogen phosphate and water solution of ethanol=10-20:25-28:6-8:14-15:8-12:100.
  5. 5. The high-thermal-stability electric porcelain glaze according to claim 1, wherein in the step (2), the solid phase A is dispersed in deionized water to form a suspension, the solid-liquid mass ratio of the solid phase A is solid phase A, deionized water=1:60, the concentration of zinc acetate in the mixed aqueous solution of zinc acetate and lithium acetate is 10-12 g/100mL, the concentration of lithium acetate is 8-10 g/100mL, the solvent is water, and the mass ratio of the mixed aqueous solution of zinc acetate and lithium acetate to sodium carbonate is suspension, wherein the mixed aqueous solution of zinc acetate and lithium acetate is sodium carbonate=10 mL, 4-5 mL, and 2-3 g.
  6. 6. The method for glazing an electric porcelain glaze according to claim 2, comprising the steps of: Firstly, weighing the raw material components according to the weight parts, mixing the raw material components to form mixed powder, and uniformly ball-milling and mixing the mixed powder by a wet method to obtain glaze slurry; Regulating the water content of the glaze slip to 45%, then applying the glaze slip to a biscuit of the electroceramics by a dipping method, naturally airing the electroceramics after glazing, drying the electroceramics in an electrothermal blowing drying box for 8 hours, preserving heat for 1 hour after drying, sintering the electroceramics after drying, and then cooling the electroceramics to normal temperature along with a furnace to obtain the electroceramics after glazing.
  7. 7. The glazing method according to claim 6, wherein the ball milling parameters are material, ball and water mass ratio, ball: water=1:1.6:0.8, ball milling rotation speed is 300r/min, and ball milling time is 20h.

Description

High-thermal-stability electric porcelain glaze and preparation method thereof Technical Field The invention relates to the technical field of electric porcelain glaze, in particular to an electric porcelain glaze with high thermal stability and a preparation method thereof. Background The electric porcelain glaze is smooth glass covered on the surface of the porcelain insulator, and the thickness of the glass layer is about 0.2-0.3 mm. The porcelain glaze plays an important role in the performance of the insulator and is mainly characterized in that (1) the chemical stability of the insulator is improved. The electric porcelain glaze forms a compact and waterproof glass thin layer on the surface of the insulator, so that the insulator has higher surface hardness and the capability of resisting the corrosion of external corrosive gas and liquid, and the chemical stability of the insulator is improved. (2) improving the strength and thermal stability of the insulator. The electric porcelain glaze can fill and level various defects on the surface of the porcelain body, such as rough and uneven, tiny holes, microcracks and the like, and improves the surface quality of the insulator. (3) improving the dirt-proof capacity of the insulator. The smoothness and the smoothness of the glaze surface endow the insulator with better self-cleaning capability, the insulator is not easy to pollute in operation, and operators can conveniently clean the polluted surface. Disclosure of Invention The invention provides a high-thermal-stability electric porcelain glaze, which comprises quartz powder, potassium feldspar, kaolin, calcite, ferric oxide, barium oxide, titanium dioxide, diboron trioxide, zirconium dioxide and additives, wherein the preparation method of the additives comprises the following steps: (1) Preparing an aqueous solution of ethanol, preparing an aqueous solution of aluminum isopropoxide, preparing an aqueous solution of ammonium dihydrogen phosphate and preparing an aqueous solution of rhodium chloride, carrying out water bath constant temperature on the aqueous solution of ethanol to 60+/-3 ℃, preserving heat, condensing and refluxing in the heat preservation process, stirring the aqueous solution of ethanol, adding ammonia water into the solution in a stirring state, continuing stirring the solution at the constant temperature of 60+/-3 ℃ for more than 10min after the addition is finished, simultaneously adding tetraethoxysilane, the aqueous solution of rhodium chloride, the aqueous solution of aluminum isopropoxide and the aqueous solution of ammonium dihydrogen phosphate into the solution in the stirring state, carrying out heat preservation on the mixed solution in a sealed reaction kettle for more than 100+/-2 ℃ for 30h after the addition is finished, then carrying out air cooling to normal temperature, carrying out solid-liquid separation, washing a solid phase with deionized water for more than 3 times, and drying for more than 30min at 80 ℃ to obtain a dried solid phase A; (2) Dispersing the dried solid phase A in deionized water to form a suspension, preparing a mixed aqueous solution of zinc acetate and lithium acetate, stirring the suspension, adding the mixed aqueous solution of zinc acetate and lithium acetate into the suspension in a stirring state to obtain a mixed solution, stirring the mixed solution for more than 20min, adding sodium carbonate into the mixed solution, immediately sealing the reaction kettle after the addition, heating to 150 ℃ for more than 10h, air-cooling to normal temperature after the heat preservation is finished, opening the reaction kettle, separating solid from liquid, washing the solid phase with deionized water for more than 3 times, and drying at 80 ℃ for more than 30min to obtain the additive. Further, the raw materials comprise, by weight, 30 parts of quartz powder, 10-15 parts of potassium feldspar, 2-4 parts of kaolin, 15-18 parts of calcite, 5-8 parts of ferric oxide, 2-3 parts of barium oxide, 2-3 parts of titanium dioxide, 1-5 parts of diboron trioxide, 1-3 parts of zirconium dioxide and 10-14 parts of additives. Further, in the step (1), the volume percentage of ethanol in the aqueous solution of ethanol is 80%, the concentration of aluminum isopropoxide in the aqueous solution of aluminum isopropoxide is 8-10 g/100mL, the solvent is ethanol, the concentration of ammonium dihydrogen phosphate in the aqueous solution of ammonium dihydrogen phosphate is 10-12 g/100mL, the solvent is water, and the ethanol solution of rhodium chloride is prepared by mixing rhodium chloride trihydrate with ethanol=3-5 g/100 mL. Further, the mass percentage of the solute in the ammonia water is 20%, and the adding volume ratio of the ammonia water, the ethyl orthosilicate, the ethanol solution of rhodium chloride, the ethanol solution of aluminum isopropoxide and the water solution of ammonium dihydrogen phosphate to the water solution of ethanol is that ammonia water, ethy