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Ceramic glaze with high cold and hot shock resistance, ceramic body and preparation methods thereof

A technology of heat and cold shock resistance and ceramic glaze, which is applied to clay products, other household utensils, special materials for cooking utensils, etc., can solve the problem of difficult low expansion coefficient ceramic body tightly bonded, and achieve the effect of small expansion coefficient

Active Publication Date: 2018-11-02
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a ceramic glaze with high resistance to cold and heat shock, which overcomes the defect that the existing traditional glaze is difficult to be tightly combined with the low expansion coefficient ceramic body without peeling off

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A ceramic body, including a ceramic body and a glaze surface; the raw material composition of the ceramic body is: 30% petalite, 40% kaolin, 20% clay, and 10% purple wood. The coefficient of thermal expansion is 0.99×10 -6 / °C, 6 / °C; the glaze on the glaze is composed of the following raw materials in weight percent: petalite 58%, kaolin 5%, quartz 25%, talc 6%, zinc oxide 3% and barium carbonate 3%.

[0024] The ceramic green body is obtained by mixing 30% petalite feldspar, 40% kaolin, 20% clay, and 10% purple wood knot through the following steps step 1), adding water for ball milling, and mixing the mixed material with water The weight ratio is 1:1 and the ball milling time is 20 minutes;

[0025] Step 2), stale the slurry obtained in step 1) for 20 hours, and the viscosity of the slurry is 300 rpm;

[0026] In step 3), the stale slurry obtained in step 2) is rolled, granulated, dry pressed or injection molded into a ceramic green body;

[0027] Step 4), sintering...

Embodiment 2

[0033] A ceramic body, including a ceramic body and a glaze surface; the raw material composition of the ceramic body is: 60% petalite, 20% kaolin, 15% clay, and 5% purple wood. The coefficient of thermal expansion is 0.95×10 -6 / °C, 6 / °C; the glaze on the glaze is composed of the following raw materials in weight percent: petalite 58%, kaolin 5%, quartz 25%, talc 6%, zinc oxide 3% and barium carbonate 3%.

[0034] The ceramic green body is obtained by mixing 60% petalite feldspar, 20% kaolin, 15% clay, and 5% purple wood knot through the following steps step 1), and then adding water for ball milling. The mixed material is mixed with water The weight ratio is 1:1.5 and the ball milling time is 30 minutes;

[0035] Step 2), stale the slurry obtained in step 1) for 10 hours, and the viscosity is 500 rpm;

[0036] In step 3), the stale slurry obtained in step 2) is rolled, granulated, dry pressed or injection molded into a ceramic green body;

[0037] Step 4), sintering the gr...

Embodiment 3

[0042] A ceramic body, including a ceramic body and a glaze surface; the raw material composition of the ceramic body is: 50% petalite, 30% kaolin, 19% clay, and 1% purple wood. The coefficient of thermal expansion is 0.96×10 -6 / °C, 6 / °C; the glaze on the glaze is composed of the following raw materials in weight percent: petalite 58%, kaolin 5%, quartz 25%, talc 6%, zinc oxide 3% and barium carbonate 3%.

[0043] The ceramic green body is obtained by mixing 50% petalite feldspar, 30% kaolin, 19% clay, and 1% purple wood knot through the following steps step 1), adding water for ball milling, and mixing the mixed material with water The weight ratio is 1:1 and the ball milling time is 40 minutes;

[0044] Step 2), stale the slurry obtained in step 1) for 8 hours, and the viscosity range is 400 rpm;

[0045] In step 3), the stale slurry obtained in step 2) is rolled, granulated, dry pressed or injection molded into a ceramic green body;

[0046] Step 4), sintering the green ...

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Abstract

The invention relates to ceramic glaze with high cold and hot shock resistance. The ceramic glaze is prepared from the following raw materials in percentage by weight: 40 to 80% of petalite, 3 to 10%of kaolin, 3 to 25% of quartz, 1 to 7% of talcum, 1 to 6% of zinc oxide and 1 to 6% of barium carbonate. The ceramic glaze disclosed by the invention can present silky luster after being covered to aceramic body, an expansion coefficient of the ceramic glaze is small, whiteness of the ceramic glaze can reach 67.8, and the ceramic glaze is prevented from peeling after cooking for 2,200 times.

Description

technical field [0001] The invention relates to a ceramic glaze with high resistance to cold and heat shock, a ceramic body and a preparation method thereof, belonging to the field of ceramic utensils. Background technique [0002] In recent years, as people's living standards have become higher and higher, the requirements for healthy and environmentally friendly pot materials have become higher and higher, and concerns about rust and poisoning of metal pots and pans have increased. Due to the superior performance of ceramic materials, they are healthy and environmentally friendly. More and more attention is being paid to the field of pots and utensils. However, ceramic materials are brittle and have poor thermal shock resistance. Ordinary ceramic pots are easily broken by thermal shock during use. Therefore, the application of high thermal shock resistant ceramic materials to ceramic pots has a very large market prospect, but It is difficult for traditional glazes to be t...

Claims

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Application Information

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IPC IPC(8): C03C8/00C04B33/13C04B35/19C04B35/622C04B41/86A47J36/04
CPCA47J36/04C03C8/00C04B33/13C04B35/19C04B35/622C04B41/5022C04B41/86C04B2235/3203C04B2235/3472C04B2235/349C04B2235/656C04B41/4539C04B41/0072
Inventor 屈雪平曹达华李洪伟杨玲周鹏李兴航周虎李康
Owner FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
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