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Bending and thermal shock resistant ceramic blank, bending and thermal shock resistant ceramic product and preparation method thereof

A technology of ceramic products and thermal shock resistance, applied in clay products, other household appliances, applications, etc., can solve the problems of shortened service life, low flexural strength, low compressive strength, etc., to reduce voids, improve mechanical strength, The effect of lowering the melting temperature

Inactive Publication Date: 2019-09-20
福建省德化县邦威陶瓷有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, ceramic products currently on the market have the disadvantages of low compressive strength and low flexural strength, and are prone to cracking under some external forces, shortening their service life, and improving the mechanical properties and thermal stability of ceramic products is also It has become a shortcut to improve the flexural and thermal shock resistance of ceramics

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  • Bending and thermal shock resistant ceramic blank, bending and thermal shock resistant ceramic product and preparation method thereof

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Effect test

Embodiment 1

[0023] A method for preparing a bending-resistant and thermal-shock-resistant ceramic product, comprising the following steps:

[0024] Step 1, 42 parts by weight of kaolin, 7 parts by weight of sodium lignosulfonate, 16 parts by weight of zirconium nitride, 15 parts by weight of clay, 5 parts by weight of niobium pentoxide, 13 parts by weight of fluxing material, and 21 parts by weight of magnesium aluminum spinel 11 parts by weight of mullite, 8 parts by weight of albite, 22 parts by weight of alumina, 7 parts by weight of lithium disilicate, pulverized and mixed in a ball mill, adding water with 30% of the total mass of green body raw materials, and ball milled for 12 hours , passed through a 100-mesh sieve, and then freeze-dried at a temperature of -23°C until the water content was 5%, to obtain a billet, wherein the fluxing material was mixed with calcium oxide and magnesium oxide in a weight ratio of 3:2 ;

[0025] Step 2. Evenly apply a release agent mixed with methyl ...

Embodiment 2

[0029] A method for preparing a flexural-resistant and thermal-shock-resistant ceramic product, comprising the following steps:

[0030] Step 1, 44 parts by weight of kaolin, 8 parts by weight of sodium lignosulfonate, 18 parts by weight of zirconium nitride, 16 parts by weight of clay, 6 parts by weight of niobium pentoxide, 14 parts by weight of fluxing material, and 22 parts by weight of magnesium aluminum spinel 12 parts by weight of mullite, 9 parts by weight of albite, 24 parts by weight of alumina, and 8 parts by weight of lithium disilicate, put them into a ball mill and mix after pulverization, add water with 34% of the total mass of green body raw materials, and ball mill for 13 hours , passed through a 100-mesh sieve, and then freeze-dried at -23°C to a water content of 6%, to obtain a billet, wherein the fluxing material was mixed with calcium oxide and magnesium oxide in a weight ratio of 3:2 ;

[0031] Step 2. Evenly apply the mold release agent mixed with methy...

Embodiment 3

[0035] A method for preparing a flexural-resistant and thermal-shock-resistant ceramic product, comprising the steps of:

[0036] Step 1, 45 parts by weight of kaolin, 9 parts by weight of sodium lignosulfonate, 20 parts by weight of zirconium nitride, 17 parts by weight of clay, 7 parts by weight of niobium pentoxide, 14 parts by weight of fluxing material, and 22 parts by weight of magnesium aluminum spinel 13 parts by weight of mullite, 12 parts by weight of albite, 26 parts by weight of alumina, 10 parts by weight of lithium disilicate, pulverized and mixed in a ball mill, adding water with 37% of the total mass of green body raw materials, ball milled for 14 hours , passed through a 200-mesh sieve, and then freeze-dried at -23°C until the water content was 6%, to obtain a billet, wherein the fluxing material was mixed with calcium oxide and magnesium oxide in a weight ratio of 3:2 ;

[0037]Step 2. Evenly apply the mold release agent mixed with methyl silicone oil, polye...

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Abstract

The invention discloses a bending and thermal shock resistant ceramic blank, a bending and thermal shock resistant ceramic product and a preparation method thereof, belonging to the technical field of ceramic preparation. The ceramic blank comprises kaolin, sodium lignin sulfonate, zirconium nitride, clay, niobium pentoxide, flux, magnesia-aluminum spinel, mullite, albite, alumina and lithium disilicate. The preparation method comprises the following steps: crushing blank raw material, putting the blank raw material into a ball miller, mixing, adding water and ball milling, freeze drying at -23 DEG C until moisture content is 5-8%, and then putting into a die of a press forming machine, and hot pressing for 35-40 min and then demoulding, cooling to 30-40 DEG C, obtaining a blank body, and putting that blank body into a drying oven to dry the blank body for 2-3 hours later, then putting mixture into a kiln to be burnt for 12-18 hours, and obtaining the finished product. The ceramic product made of the blank of the invention has the advantages of high mechanical strength, strong fracture resistance and thermal shock resistance.

Description

technical field [0001] The invention belongs to the technical field of ceramic preparation, and in particular relates to a bending-resistant and thermal-shock-resistant ceramic blank, a bending-resistant and thermal-shock-resistant ceramic product and a preparation method thereof. Background technique [0002] As a big exporter of ceramic products, after a long period of development, China's ceramic production technology has been continuously improved. Good production technology endows ceramic products with various properties, so that ceramic products are more used in people's lives. in production. All kinds of tableware and tea sets can be seen in ceramic products everywhere. These ceramics are not only beautiful in appearance and diverse in shape, but also have the advantages of easy cleaning and corrosion resistance, and are deeply loved by consumers. [0003] However, the market now requires other properties of ceramic products to manufacture ceramic products with bette...

Claims

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Application Information

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IPC IPC(8): C04B33/13C04B33/32C04B41/86
CPCC04B33/13C04B33/1305C04B33/32C04B35/634C04B41/009C04B41/5022C04B41/86C04B2235/3217C04B2235/3222C04B2235/3251C04B2235/3427C04B2235/3463C04B2235/3472C04B2235/3886C04B2235/96C04B2235/9607
Inventor 危连进
Owner 福建省德化县邦威陶瓷有限公司
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