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Low-shrinkage-expansion-rate ceramic product and preparing method thereof

A technology of low shrinkage expansion rate and ceramic products, applied in the field of ceramics, can solve the problems of parts that cannot be frequently alternated with cold and heat, poor thermal shock resistance, and parts that cannot be used at high temperatures, etc., to achieve unbreakable and thermal shock resistance Strong, good mechanical properties

Inactive Publication Date: 2017-03-22
崔松伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Ordinary ceramics are not ideal in terms of low shrinkage and other properties. The research on the production of low shrinkage expansion ceramic products has always been a difficult problem in the field of daily-use ceramics. The existing low shrinkage expansion ceramic products have high thermal expansion coefficients and are resistant to thermal shock. The performance is poor, the mechanical strength is low, the heat exchange is easy to break, and it cannot be used in harsh environments
[0003] At present, due to the large coefficient of thermal expansion, poor toughness, poor wear resistance, large shrinkage rate during molding, and easy breakage in high-temperature environments, traditional ceramics are greatly restricted in their application fields and cannot be used in high-temperature parts, especially Areas that alternate between hot and cold

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: A ceramic product with a low shrinkage expansion rate, prepared from raw materials in the following proportions by weight: nano-calcium carbonate: 5 parts, andorthite: 10 parts, kaolin: 15 parts, potassium feldspar: 15 parts Parts, pyrophyllite: 10 parts, wollastonite: 10 parts, feldspar: 8 parts, quartz: 6 parts, spodumene: 10 parts, nano-cerium oxide: 0.08 parts, silicon carbide: 3 parts.

[0016] A preparation method of the above-mentioned low shrinkage-expansion ceramic product, comprising the following steps:

[0017] (1) Pulverize the raw materials according to the above weight parts, and pass through a 300-mesh sieve to obtain a mixture;

[0018] (2) Stir and mix the mixture obtained in step (1) evenly, and add it into the ball mill

[0019] After intermediate grinding, pass the grinding material through a 700-mesh sieve, add water to make the embryo material, and the embryo material is shaped to obtain the embryo body after iron removal, rough sco...

Embodiment 2

[0021] Embodiment 2: A ceramic product with a low shrinkage expansion rate, prepared from raw materials in the following proportions by weight: nano-calcium carbonate: 6 parts, andorthite: 12 parts, kaolin: 16 parts, potassium feldspar: 16 parts Parts, pyrophyllite: 12 parts, wollastonite: 11 parts, feldspar: 10 parts, quartz: 8 parts, spodumene: 12 parts, nano-cerium oxide: 0.1 parts, silicon carbide: 4 parts.

[0022] A preparation method of the above-mentioned low shrinkage-expansion ceramic product, comprising the following steps:

[0023] (1) Pulverize the raw materials according to the above weight parts, and pass through a 400-mesh sieve to obtain a mixture;

[0024] (2) Stir and mix the mixture obtained in step (1) evenly, and add it into the ball mill

[0025] After intermediate grinding, pass the grinding material through a 800-mesh sieve, add water to make the embryo material, and the embryo material will be shaped into an embryo body after iron removal, rough scou...

Embodiment 3

[0027] Embodiment 3: A ceramic product with a low shrinkage expansion ratio, prepared from raw materials in the following proportions by weight: nano-calcium carbonate: 8 parts, andorthite: 15 parts, kaolin: 18 parts, potassium feldspar: 18 parts Parts, pyrophyllite: 15 parts, wollastonite: 13 parts, feldspar blue: 12 parts, quartz: 10 parts, spodumene: 13 parts, nano-cerium oxide: 0.12 parts, silicon carbide: 5 parts.

[0028] A preparation method of the above-mentioned low shrinkage-expansion ceramic product, comprising the following steps:

[0029] (1) Pulverize the raw materials according to the above weight parts, and pass through a 400-mesh sieve to obtain a mixture;

[0030] (2) Stir and mix the mixture obtained in step (1) evenly, and add it into the ball mill

[0031] After intermediate grinding, pass the grinding material through a 800-mesh sieve, add water to make the embryo material, and the embryo material will be shaped into an embryo body after iron removal, ro...

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Abstract

The invention particularly relates to a low-shrinkage-expansion-rate ceramic product and a preparing method thereof. The low-shrinkage-expansion-rate ceramic product is prepared from raw materials of, by weight, 5-8 parts of nanometer calcium carbonate, 10-15 parts of red feldspar, 15-18 parts of kaoline, 15-18 parts of potassium feldspar, 10-15 parts of pyrophyllite, 10-13 parts of wollastonite, 8-12 parts of blue feldspar, 6-10 parts of quartz, 10-13 parts of spodumene, 0.08-0.12 part of nanometer cerium oxide and 3-5 parts of silicon carbide. The preparing method comprises the steps of weighing, grinding, filtering, blank drying, washing, glazing and firing and the like. According to the method, the special optimal raw material formula is adopted, the thermal expansion coefficient of the low-shrinkage-expansion-rate ceramic product is low, the shrinkage rate is low in the ceramic forming process, thermal impact resistance is high, and cracking does not occur easily in the heat exchange process.

Description

technical field [0001] The invention belongs to the field of ceramics, and in particular relates to a ceramic product with a low shrinkage expansion rate and a preparation method thereof. Background technique [0002] Ordinary ceramics are not ideal in terms of low shrinkage and other properties. The research on the production of low shrinkage expansion ceramic products has always been a difficult problem in the field of daily-use ceramics. The existing low shrinkage expansion ceramic products have a high thermal expansion coefficient and are resistant to thermal shock. The performance is poor, the mechanical strength is low, the heat exchange is easy to break, and it cannot be used in harsh environments. [0003] At present, due to the large coefficient of thermal expansion, poor toughness, poor wear resistance, large shrinkage rate during molding, and easy breakage in high-temperature environments, traditional ceramics are greatly restricted in their application fields and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/19C04B35/622
CPCC04B35/19C04B35/622C04B2235/3208C04B2235/3229C04B2235/3418C04B2235/3454C04B2235/349C04B2235/3826C04B2235/96C04B2235/9607
Inventor 崔松伟
Owner 崔松伟
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