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A kind of strengthened porcelain prepared by using ordinary daily-use ceramic blank and its preparation method

A technology for ceramic blanks and reinforced porcelain, which is used in applications, clay products, household appliances, etc., can solve the problems of restricting the production and application of bone china, difficult process control, and large amount of bone powder, and achieves improved mechanical properties and thermal stability. performance, improved strength and thermal stability, high production efficiency

Active Publication Date: 2020-10-13
WUHAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large amount of bone powder used and its price is much higher than other raw materials for porcelain making, the production and application of bone china are greatly restricted. In addition, its Achilles heel of poor thermal stability, slightly low strength and difficult process control has not yet been broken through.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 90% of ordinary daily-use ceramic blanks, 3% of talc, 3% of aluminum trifluoride, 2% of titanium dioxide, 1% of vanadium pentoxide, and 1% of lanthanum oxide, plus water glass with a total mass of 6‰ of the above raw materials. According to the material: water: grinding ball medium = 1:0.35:1.2 ingredients, wet ball milling materials for 1h, the water content of the obtained mud is 35%-40%, and the thixotropy is 1.6-2.2, pour the obtained mud into the prepared plaster mold middle. After the gypsum mold sucks the slurry for 1.5-2 hours, pour out the remaining slurry, and let it stand for 1 hour before demoulding, and the obtained green body is dried in a drying room.

[0027] Put the prepared dry billet into the kiln, rapidly raise the temperature from room temperature to 850°C at a rate of 4°C / min, then slowly increase the temperature to 1260°C at a rate of 2°C / min, keep it warm for 60 minutes, and follow the process after firing Cool to obtain strengthened porce...

Embodiment 2

[0031] Weigh 85% of ordinary daily-use ceramic blanks, 10% of talc, 3% of aluminum trifluoride, 1% of titanium dioxide, and 1% of vanadium pentoxide, plus water glass with a total mass of 5‰ of the above raw materials. According to the material: water: grinding ball medium = 1:0.35:1.2 ingredients, wet ball milling materials for 2 hours, the water content of the obtained mud is 35%-40%, and the thixotropy is 1.6-2.2, pour the obtained mud into the prepared plaster mold middle. After the gypsum mold sucks the slurry for 1.5-2 hours, pour out the remaining slurry, and let it stand for 1 hour before demoulding, and the obtained green body is dried in a drying room.

[0032] Put the prepared dry billet into the kiln, rapidly raise the temperature from room temperature to 850°C at a rate of 6°C / min, then slowly increase the temperature to 1210°C at a rate of 4°C / min, keep it warm for 30 minutes, and follow the road after firing Cool to obtain strengthened porcelain products.

[0...

Embodiment 3

[0036] Weigh 88% of ordinary daily-use ceramic blanks, 8% of talc, 1% of aluminum trifluoride, 3% of titanium dioxide, and water glass with a total mass of 8‰ of the above raw materials. According to the material: water: grinding ball medium = 1:0.35:1.2 ingredients, wet ball milling materials for 1.5h, the water content of the obtained mud is 35%-40%, the thixotropy is 1.6-2.2, pour the obtained mud into the prepared gypsum in the mold. After the gypsum mold sucks the slurry for 1.5-2 hours, pour out the remaining slurry, and let it stand for 1 hour before demoulding, and the obtained green body is dried in a drying room.

[0037] Put the prepared dry billet into the kiln, rapidly raise the temperature from room temperature to 900°C at a rate of 5°C / min, then slowly increase the temperature to 1230°C at a rate of 3°C / min, keep it warm for 45 minutes, and follow the road after firing Cool to obtain strengthened porcelain products.

[0038] The chemical composition of the dai...

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Abstract

The invention relates to the technical field of daily ceramic preparation, and particularly relates to a reinforced ceramic prepared from common daily ceramic blanks and a preparation method of the reinforced ceramic. The reinforced ceramic is prepared from the following raw materials by mass: 85%-90% of daily ceramic blanks, 3%-10% of talc, 1%-3% of aluminum fluoride, 0-1% of titanium dioxide, 0-1% of vanadium pentoxide, 0-1% of lanthanum oxide and sodium silicate accounting for 5 per mill-8 per mill of the total mass of the raw materials. The reinforced ceramic provided by the invention is prepared by using the common daily ceramic blanks as main raw materials and adding a small amount of a reinforcing agent; the added talc can generate cordierite with aluminum oxide and silicon dioxidein clay to effectively reduce a thermal expansion coefficient of the ceramic blanks; the vanadium pentoxide or lanthanum oxide can promote decomposition of aluminum fluoride and activate with silicondioxide in the clay to form needle or whisker-like secondary mullite or form thermal shock-resistant aluminum titanate crystals with titanium dioxide at high temperature, thereby effectively improvingmechanical properties and thermal stability of the ceramic blanks.

Description

technical field [0001] The invention relates to the technical field of preparation of daily-use ceramics, in particular to a reinforced porcelain prepared by using ordinary daily-use ceramic blanks and a preparation method thereof. Background technique [0002] my country is a big country in the production and consumption of ceramics, and the total output of ceramics ranks first in the world. The huge production scale of the ceramic industry also produces a series of problems such as ultra-high energy consumption, consumption of a large amount of mineral raw materials, and environmental pollution. In addition, the quality of my country's ceramic products is generally not high, and it is difficult to meet the requirements of mechanical strength, thermal stability and wear resistance of daily-use ceramic products in people's daily life. In order to produce daily-use ceramics with good mechanical strength, which can adapt to mechanical washing and withstand equipment collision...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/13C04B33/16
CPCC04B33/131C04B33/16C04B2235/3201C04B2235/3217C04B2235/3227C04B2235/3232C04B2235/3239C04B2235/3418C04B2235/3427C04B2235/3463C04B2235/445C04B2235/6562C04B2235/6567C04B2235/77C04B2235/96
Inventor 张宏泉栗振宇郑秋荣邢杰强文进蔡燕珊徐绍华
Owner WUHAN UNIV OF TECH
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