CN111646790A - Wear-resistant daily ceramic bowl with strong thermal stability and manufacturing process thereof - Google Patents

Wear-resistant daily ceramic bowl with strong thermal stability and manufacturing process thereof Download PDF

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CN111646790A
CN111646790A CN202010580760.XA CN202010580760A CN111646790A CN 111646790 A CN111646790 A CN 111646790A CN 202010580760 A CN202010580760 A CN 202010580760A CN 111646790 A CN111646790 A CN 111646790A
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ceramic bowl
raw materials
blank
thermal stability
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CN111646790B (en
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郑永章
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Fujian Dehua Sanfeng Ceramics Co ltd
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Fujian Dehua Sanfeng Ceramics Co ltd
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    • C03C8/00Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
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Abstract

The invention provides a wear-resistant daily ceramic bowl with strong thermal stability and a manufacturing process thereof, wherein the ceramic bowl comprises a blank body and a glaze layer applied on the blank body, and the blank body is prepared from the following raw materials in parts by weight: 35-40 parts of kaolin, 37-40 parts of mica powder, 20-25 parts of mullite powder, 15-20 parts of allophane, 15-16 parts of zirconium silicate, 15-16 parts of silica sand and 12-15 parts of sodium silicate; the glaze layer comprises the following raw materials in parts by weight: 18-21 parts of kaolin, 10-13 parts of sodium silicate, 7-10 parts of zircon powder, 10-12 parts of alumina, 10-13 parts of silicon oxide, 0.7-0.8 part of ferric oxide, 0.1-0.3 part of titanium oxide and 7-10 parts of carboxymethyl cellulose. The daily ceramic bowl with wear resistance and strong thermal stability has the advantages of slow heat conduction, wear resistance, boiling resistance and no dissolution of toxic substances harmful to human bodies under high temperature or acidic conditions.

Description

Wear-resistant daily ceramic bowl with strong thermal stability and manufacturing process thereof
The application is a divisional application of an invention patent application named as 'a daily ceramic bowl with slow heat conduction and wear resistance and a manufacturing process thereof', and the application date of the original application is 08, 16 and 2017, and the application number is 201710703815. X.
Technical Field
The invention belongs to the technical field of daily ceramics, and particularly relates to a daily ceramic bowl with wear resistance and strong thermal stability and a manufacturing process thereof.
Background
The ceramic bowl has the advantages of beautiful shape, smooth and exquisite hand feeling, clear and bright color, convenient cleaning, difficult cracking performance after being subjected to rapid heating and shock cooling change with certain temperature difference, poor thermal conductor, slow heat transfer, difficult hand scalding when being held, durability, acid, alkali, salt and carbonic acid gas erosion in the atmosphere, rust resistance and aging resistance, and is popular with people. In order to be convenient to use, the ceramic bowl also needs to have the advantages of slow heat transfer, few air holes, low water absorption, no toxicity and no pollution, so that the daily requirements of people can be better met.
Disclosure of Invention
Based on the prior art, the invention aims to provide a wear-resistant daily ceramic bowl with strong thermal stability and a manufacturing process thereof, the daily ceramic bowl has bright color, exquisite hand feeling, slow heat conduction, wear resistance and boiling resistance, does not crack when being cooled and heated rapidly within the temperature range of 450-minus 20 ℃, does not dissolve out toxic substances harmful to human bodies under high temperature or acidic conditions, and completely meets various requirements of daily life of people.
In order to achieve the above purpose, the invention adopts the technical scheme that: a wear-resistant daily ceramic bowl with high thermal stability comprises a blank body and a glaze layer applied on the blank body, and is characterized in that the blank body is prepared from the following raw materials in parts by weight: 35-45 parts of kaolin, 35-45 parts of mica powder, 20-25 parts of mullite powder, 15-20 parts of allophane, 15-18 parts of zirconium silicate, 15-20 parts of silica sand and 10-18 parts of sodium silicate; the glaze layer comprises the following raw materials in parts by weight: 15-30 parts of kaolin, 8-15 parts of sodium silicate, 5-12 parts of zircon powder, 10-15 parts of alumina, 10-15 parts of silicon oxide, 0.5-1 part of ferric oxide, 0.1-0.5 part of titanium oxide and 5-10 parts of carboxymethyl cellulose.
Preferably, the blank body is prepared from the following raw materials in parts by weight: 40 parts of kaolin, 40 parts of mica powder, 23 parts of mullite powder, 17 parts of allophane, 16 parts of zirconium silicate, 16 parts of silica sand and 15 parts of sodium silicate; the glaze layer is prepared from the following raw materials in parts by weight: 21 parts of kaolin, 11 parts of sodium silicate, 9 parts of zircon powder, 12 parts of alumina, 13 parts of silicon oxide, 0.7 part of ferric oxide, 0.2 part of titanium oxide and 8 parts of carboxymethyl cellulose.
The invention adopts kaolin and mica powder as main raw materials for manufacturing the blank body, wherein the kaolin is a common clay mineral in the nature and has good plasticity and fire resistance, the mica powder mainly comprises silicon oxide and aluminum oxide and has good elasticity, toughness and adhesive force, and the kaolin and the aluminum oxide are combined to form the main raw materials of the ceramic bowl blank body; the mullite powder is aluminosilicate and has high temperature resistance, small heat conductivity coefficient and small thermal expansion coefficient, thereby improving the thermal stability of the ceramic bowl and reducing the heat conduction rate; the allophane is an amorphous aluminosilicate mineral composed of silicon oxide, aluminum oxide and water, is in a sponge aggregate shape in appearance, has a plurality of pores and a large surface area, is a main sticky particle mineral of volcanic ash soil, has good fire resistance, heat resistance and adhesive force, can improve the thermal stability of the ceramic bowl, and can also improve the viscosity and plasticity of raw materials in the process of preparing the ceramic bowl; the zirconium silicate has stable chemical properties and can improve the wear resistance, toughness and strength of the ceramic bowl; the silica sand is a hard, wear-resistant and chemically stable silicate mineral, the main mineral component of the silica sand is silica, and the silica sand has higher fire resistance and can improve the strength and the wear resistance of the ceramic bowl; the sodium silicate has large surface area and high adhesive force, forms a silicon dioxide net-shaped framework after being hardened, and can integrally improve the heat resistance and the strength of the ceramic bowl after being combined with other heat-resistant raw materials in the raw materials; the zircon powder is used for improving the wear resistance and the surface smoothness of the prepared ceramic bowl, has chemical stability, is not influenced by the firing condition of the ceramic, can obviously improve the bonding property of blank glaze of the ceramic, improves the hardness of the glaze surface of the ceramic and can also improve the high temperature resistance of the ceramic; the wear resistance and water resistance of the glaze layer are improved by the aluminum oxide and the silicon oxide, and the viscosity, the strength and the water retention of the prepared glaze water can be improved by adding the iron oxide, the titanium oxide and the carboxymethyl cellulose into the glaze layer raw materials.
As optimization, the glaze layer raw materials also comprise 3-10 parts of pigment, the pigment is mixed with other glaze layer raw materials, then water is added to prepare glaze water with different colors, and finally, ceramic bowls with different colors are prepared, so that the preference of different people is met.
As another optimization, the mica powder is muscovite powder, and the muscovite powder can better improve the toughness, the corrosion resistance and the thermal stability of the ceramic bowl.
The invention also provides a process for manufacturing the daily ceramic bowl with wear resistance and strong thermal stability, which comprises the following steps:
(1) weighing the raw materials according to the weight parts for later use;
(2) mixing the raw materials of the green body, adding water, grinding until the raw materials can completely pass through a 100-120-mesh sieve, wherein the solid content is 45-55%, then carrying out vacuum defoaming for 5-20 minutes under the conditions of 70-85 ℃ and-2-0.5 MPa to obtain a pug, then stirring for 3-15 minutes at the speed of 1-5 r/s under the condition of 35-75 ℃, adjusting the solid content of the pug to 65-70% in the stirring process, then shaping the pug to obtain a rough blank, naturally drying in the shade, then benefiting the blank, and finally carrying out biscuit firing under the condition of 300-500 ℃ to obtain a biscuit ceramic bowl;
(3) mixing the glaze layer raw materials, adding water, grinding until the glaze layer raw materials can completely pass through a sieve of 80-100 meshes, wherein the solid content is 40-55%, then carrying out vacuum defoaming for 5-20 minutes at 75-85 ℃ and-2-0.5 MPa to obtain glaze water, glazing the biscuit firing ceramic bowl obtained in the step (2) by using the glaze water, and finally carrying out glaze firing at 1050-1200 ℃ for 1-4 hours to obtain the daily ceramic bowl with wear resistance and strong thermal stability.
Advantageous effects
The daily ceramic bowl with wear resistance and strong thermal stability provided by the invention has the following beneficial effects:
(1) the appearance is smooth and bright, the texture is fine and smooth and is easy to clean;
(2) the heat conduction is slow, so that the bowl body can not be heated and scalded quickly when high-temperature food is contained, and hands of a user are prevented from being scalded when the user holds the bowl;
(3) the heat stability is good, the cracking does not occur when the food is cooled and heated rapidly within the temperature range of 450 to minus 20 ℃, the food can be cooked, and the food can be heated by a microwave oven;
(4) the bowl surface glaze has the advantages of good wear resistance, high strength, low water absorption, corrosion resistance, oxidation resistance and difficult shedding of the bowl surface glaze;
(5) the environment-friendly ceramic is nontoxic and pollution-free, harmful substances such as heavy metals and the like cannot be dissolved out under high-temperature and acidic conditions, the human health cannot be damaged after long-time use, the environment cannot be polluted, and the damaged ceramic can be recycled and used for manufacturing environment-friendly ceramics.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1
The embodiment provides a wear-resistant daily ceramic bowl with strong thermal stability, which comprises a blank body and a glaze layer applied on the blank body, wherein the blank body is prepared from the following raw materials in parts by weight: 35-45 parts of kaolin, 35-45 parts of mica powder, 20-25 parts of mullite powder, 15-20 parts of allophane, 15-18 parts of zirconium silicate, 15-20 parts of silica sand and 10-18 parts of sodium silicate; the glaze layer is prepared from the following raw materials in parts by weight: 15-30 parts of kaolin, 8-15 parts of sodium silicate, 5-12 parts of zircon powder, 10-15 parts of aluminum oxide, 10-15 parts of silicon oxide, 0.5-1 part of ferric oxide, 0.1-0.5 part of titanium oxide, 5-10 parts of carboxymethyl cellulose and 3 parts of glaze-used coating red pigment.
The embodiment also provides a process for manufacturing the daily ceramic bowl with wear resistance and strong thermal stability, which comprises the following steps:
(1) weighing the raw materials according to the parts by weight for later use;
(2) mixing the blank raw materials, adding water, grinding until the mixture can completely pass through a 100-mesh sieve, wherein the solid content is 45%, then carrying out vacuum defoaming for 20 minutes under the conditions of 75 ℃ and-0.5 MPa to obtain a pug, then stirring for 15 minutes at the speed of 1r/s under the condition of 35 ℃, adjusting the solid content of the pug to 65% in the stirring process, then shaping the pug to obtain a rough blank, naturally drying in the shade, then carrying out blank benefiting, and finally carrying out biscuit firing at the temperature of 300 ℃ to obtain a biscuit ceramic bowl;
(3) mixing the glaze layer raw materials, adding water, grinding until the glaze layer raw materials can completely pass through a 80-mesh sieve, wherein the solid content is 40%, then carrying out vacuum defoaming for 20 minutes at 75-2 MPa to obtain glaze water, glazing the biscuit firing ceramic bowl obtained in the step (2) by using the glaze water, and finally carrying out glaze firing at 1100 ℃ for 1.5 hours to obtain the daily ceramic bowl with wear resistance and strong thermal stability.
Example 2
The embodiment provides a wear-resistant daily ceramic bowl with strong thermal stability, which comprises a blank body and a glaze layer applied on the blank body, wherein the blank body is prepared from the following raw materials in parts by weight: 37 parts of kaolin, 37 parts of mica powder, 20 parts of mullite powder, 15 parts of allophane, 16 parts of zirconium silicate, 16 parts of silica sand and 13 parts of sodium silicate; the glaze layer is prepared from the following raw materials in parts by weight: 18 parts of kaolin, 10 parts of sodium silicate, 7 parts of zircon powder, 12 parts of aluminum oxide, 12 parts of silicon oxide, 0.7 part of ferric oxide, 0.1 part of titanium oxide, 7 parts of carboxymethyl cellulose and 5 parts of iron oxide red pigment.
The embodiment also provides a process for manufacturing the daily ceramic bowl with wear resistance and strong thermal stability, which comprises the following steps:
(1) weighing the raw materials according to the parts by weight for later use;
(2) mixing the blank raw materials, adding water, grinding until all the blank raw materials can pass through a 105-mesh sieve, wherein the solid content is 45%, then carrying out vacuum defoaming for 20 minutes under the conditions of 70 ℃ and-0.5 MPa to obtain a pug, then stirring for 10 minutes at the speed of 2r/s under the condition of 75 ℃, adjusting the solid content of the pug to 65% in the stirring process, then shaping the pug to obtain a rough blank, naturally drying in the shade, then carrying out blank benefiting, and finally carrying out biscuit firing under the condition of 300 ℃ to obtain a biscuit ceramic bowl;
(3) mixing the glaze layer raw materials, adding water, grinding until all the raw materials can pass through a sieve of 80-100 meshes, wherein the solid content is 40%, then carrying out vacuum defoaming for 5 minutes at 85 ℃ under-2 MPa to obtain glaze water, glazing the biscuit firing ceramic bowl obtained in the step (2) by using the glaze water, and finally carrying out glaze firing at 1100 ℃ for 2 hours to obtain the daily ceramic bowl with wear resistance and strong thermal stability.
Example 3
The embodiment provides a wear-resistant daily ceramic bowl with strong thermal stability, which comprises a blank body and a glaze layer applied on the blank body, wherein the blank body is prepared from the following raw materials in parts by weight: 40 parts of kaolin, 40 parts of mica powder, 23 parts of mullite powder, 17 parts of allophane, 16 parts of zirconium silicate, 16 parts of silica sand and 15 parts of sodium silicate; the glaze layer is prepared from the following raw materials in parts by weight: 21 parts of kaolin, 11 parts of sodium silicate, 9 parts of zircon powder, 12 parts of alumina, 13 parts of silicon oxide, 0.7 part of ferric oxide, 0.2 part of titanium oxide, 8 parts of carboxymethyl cellulose and 8 parts of cobalt blue pigment.
The embodiment also provides a process for manufacturing the daily ceramic bowl with wear resistance and strong thermal stability, which comprises the following steps:
(1) weighing the raw materials according to the parts by weight for later use;
(2) mixing the blank raw materials, adding water, grinding until all the blank raw materials can pass through a 120-mesh sieve, wherein the solid content is 50%, then carrying out vacuum defoaming for 5 minutes under the conditions of 80 ℃ and-2 MPa to obtain a pug, then stirring for 10 minutes at the speed of 3r/s under the condition of 55 ℃, adjusting the solid content of the pug to 65% in the stirring process, then shaping the pug to obtain a rough blank, naturally drying in the shade, then carrying out blank benefiting, and finally carrying out biscuit firing under the condition of 300-500 ℃ to obtain a biscuit ceramic bowl;
(3) mixing the glaze layer raw materials, adding water, grinding until the glaze layer raw materials can completely pass through a sieve of 85 meshes, wherein the solid content is 55%, then carrying out vacuum defoaming for 10 minutes at 80 ℃ under-2 MPa to obtain glaze water, glazing the biscuit firing ceramic bowl obtained in the step (2) by using the glaze water, and finally carrying out glaze firing at 1150 ℃ for 1-4 hours to obtain the daily ceramic bowl with wear resistance and strong thermal stability.
The embodiment also provides a process for manufacturing the daily ceramic bowl with wear resistance and strong thermal stability, which comprises the following steps:
(1) weighing the raw materials according to the parts by weight for later use;
(2) mixing the raw materials of the green body, adding water, grinding until the raw materials can completely pass through a 100-120-mesh sieve, wherein the solid content is 45-55%, then carrying out vacuum defoaming for 5-20 minutes under the conditions of 70-85 ℃ and-2-0.5 MPa to obtain a pug, then stirring for 3-15 minutes at the speed of 1-5 r/s under the condition of 35-75 ℃, adjusting the solid content of the pug to 65-70% in the stirring process, then shaping the pug to obtain a rough blank, naturally drying in the shade, then benefiting the blank, and finally carrying out biscuit firing under the condition of 300-500 ℃ to obtain a biscuit ceramic bowl;
(3) mixing the glaze layer raw materials, adding water, grinding until the glaze layer raw materials can completely pass through a sieve of 80-100 meshes, wherein the solid content is 40-55%, then carrying out vacuum defoaming for 5-20 minutes at 75-85 ℃ and-2-0.5 MPa to obtain glaze water, glazing the biscuit firing ceramic bowl obtained in the step (2) by using the glaze water, and finally carrying out glaze firing at 1050-1200 ℃ for 2 hours to obtain the daily ceramic bowl with high wear resistance and high thermal stability.
Example 4
The embodiment provides a wear-resistant daily ceramic bowl with strong thermal stability, which comprises a blank body and a glaze layer applied on the blank body, wherein the blank body is prepared from the following raw materials in parts by weight: 35 parts of kaolin, 40 parts of mica powder, 25 parts of mullite powder, 20 parts of allophane, 15 parts of zirconium silicate, 15 parts of silica sand and 12 parts of sodium silicate; the glaze layer is prepared from the following raw materials in parts by weight: 20 parts of kaolin, 13 parts of sodium silicate, 10 parts of zircon powder, 12 parts of alumina, 10 parts of silicon oxide, 0.8 part of ferric oxide, 0.3 part of titanium oxide, 10 parts of carboxymethyl cellulose and 7 parts of glaze vanadium-zirconium yellow pigment.
The embodiment also provides a process for manufacturing the daily ceramic bowl with wear resistance and strong thermal stability, which comprises the following steps:
(1) weighing the raw materials according to the parts by weight for later use;
(2) mixing the blank raw materials, adding water, grinding until all the blank raw materials can pass through a 110-mesh sieve, wherein the solid content is 50%, then carrying out vacuum defoaming for 5 minutes under the conditions of 75 ℃ and-2 MPa to obtain a pug, then stirring for 3 minutes at the speed of 5r/s under the condition of 60 ℃, adjusting the solid content of the pug to be 70% in the stirring process, then shaping the pug to obtain a rough blank, naturally drying in the shade, then carrying out blank benefiting, and finally carrying out biscuit firing under the condition of 300-500 ℃ to obtain a biscuit ceramic bowl;
(3) mixing the glaze layer raw materials, adding water, grinding until the glaze layer raw materials can completely pass through a 100-mesh sieve, wherein the solid content is 55%, then carrying out vacuum defoaming for 12 minutes at 85 ℃ under the pressure of-1.5 MPa to obtain glaze water, glazing the biscuit firing ceramic bowl obtained in the step (2) by using the glaze water, and finally carrying out glaze firing for 3 hours at 1200 ℃ to obtain the daily ceramic bowl with wear resistance and strong thermal stability.
Example 5
The embodiment provides a wear-resistant daily ceramic bowl with strong thermal stability, which comprises a blank body and a glaze layer applied on the blank body, wherein the blank body is prepared from the following raw materials in parts by weight: 45 parts of kaolin, 45 parts of mica powder, 25 parts of mullite powder, 20 parts of allophane, 18 parts of zirconium silicate, 20 parts of silica sand and 18 parts of sodium silicate; the glaze layer is prepared from the following raw materials in parts by weight: 28 parts of kaolin, 8 parts of sodium silicate, 12 parts of zircon powder, 10 parts of aluminum oxide, 15 parts of silicon oxide, 1 part of ferric oxide, 0.5 part of titanium oxide, 10 parts of carboxymethyl cellulose and 3 parts of white ceramic pigment.
The embodiment also provides a process for manufacturing the daily ceramic bowl with wear resistance and strong thermal stability, which comprises the following steps:
(1) weighing the raw materials according to the parts by weight for later use;
(2) mixing the blank raw materials, adding water, grinding until all the blank raw materials can pass through a 120-mesh sieve, wherein the solid content is 55%, then carrying out vacuum defoaming for 12 minutes under the conditions of 75 ℃ and-1.5 MPa to obtain a pug, then stirring for 10 minutes at the speed of 4r/s under the condition of 65 ℃, adjusting the solid content of the pug to 65% in the stirring process, then shaping the pug to obtain a rough blank, naturally drying in the shade, then carrying out blank benefiting, and finally carrying out biscuit firing under the condition of 450 ℃ to obtain a biscuit ceramic bowl;
(3) mixing the glaze layer raw materials, adding water, grinding until the glaze layer raw materials can completely pass through a 95-mesh sieve, wherein the solid content is 45%, then carrying out vacuum defoaming for 15 minutes at 85 ℃ under the condition of-1.3 MPa to obtain glaze water, glazing the biscuit firing ceramic bowl obtained in the step (2) by adopting the glaze water, and finally carrying out glaze firing for 3 hours at 1200 ℃ to obtain the daily ceramic bowl with wear resistance and strong thermal stability.
The raw materials and their parts by weight used to manufacture the wear-resistant, thermally stable domestic ceramic bowls of examples 1 to 5 are shown in the following table:
table 1 raw material proportions used in the manufacture of wear-resistant, highly thermally stable domestic ceramic bowls as described in examples 1 to 5
Blank raw material Example 1 Example 2 Example 3 Example 4 Example 5
Kaolin clay 35 portions of 37 portions of 40 portions of 35 portions of 45 portions of
Mica powder 35 portions of 37 portions of 40 portions of 40 portions of 45 portions of
Mullite powder 20 portions of 20 portions of 23 portions of 25 portions of 25 portions of
Allophane 15 portions of 15 portions of 17 portions of 20 portions of 20 portions of
Zirconium silicate 15 portions of 16 portions of 16 portions of 15 portions of 18 portions of
Silica sand 15 portions of 16 portions of 16 portions of 15 portions of 20 portions of
Sodium silicate 10 portions of 13 portions of 15 portions of 12 portions of 18 portions of
Raw material for glaze layer Example 1 Example 2 Example 3 Example 4 Example 5
Kaolin clay 15 portions of 18 portions of 21 portions of 20 portions of 28 portions of
Sodium silicate 8 portions of 10 portions of 11 portions of 13 portions of 8 portions of
Zircon powder 5 portions of 7 portions of 9 portions of 10 portions of 12 portions of
Alumina oxide 10 portions of 12 portions of 12 portions of 12 portions of 10 portions of
Silicon oxide 10 portions of 12 portions of 13 portions of 10 portions of 15 portions of
Iron oxide 0.5 portion 0.7 portion of 0.7 portion of 0.8 portion of 1 part of
Titanium oxide 0.1 part 0.1 part 0.2 part 0.3 part 0.5 portion
Carboxymethyl cellulose 5 portions of 7 portions of 8 portions of 10 portions of 10 portions of
Pigment (I) 3 portions of 5 portions of 8 portions of 7 portions of 6 portions of
The chips of the daily ceramic bowls with high abrasion resistance and thermal stability described in the above examples 1 to 5 were respectively tested for abrasion resistance, thermal stability and water absorption, and the testing procedures were as follows:
and (3) wear resistance test: the method comprises the steps of carrying out wear resistance testing on fragments of the ceramic bowl by using a wear resistance testing machine, taking 5 ceramic bowl fragments, placing grinding steel balls with certain particle size distribution, No. 80 white corundum and quantitative deionized water or distilled water on the fragments, carrying out rotary grinding according to a specified rotation rate, observing and comparing the worn ceramic fragments with unworn ceramic fragments, evaluating the wear resistance of the ceramic bowl fragments by the grinding revolution number of the ceramic bowl fragments with wear, and averaging the wear resistance testing results of the 5 ceramic bowl fragments to obtain the wear resistance testing result of the ceramic bowl.
And (3) testing the heat conductivity coefficient: and taking 5 pieces of the ceramic bowl, respectively measuring the heat conductivity coefficients by adopting a flat plate method, and averaging to obtain the heat conductivity coefficient test result of the ceramic bowl, wherein the lower the heat conductivity coefficient is, the slower the heat conductivity is.
And (3) testing thermal stability: taking 5 ceramic bowl fragments, placing the ceramic bowl fragments at 280 ℃ for heat preservation for 30 minutes, taking out the ceramic bowl fragments after heat preservation is finished, performing accounting, putting the ceramic bowl fragments into water at the temperature of 20 ℃ within 15s at a rapid speed, and soaking for 10 min, wherein the ratio of the weight of the water to the weight of the ceramic bowl fragments is 8: 1, taking out the ceramic bowl fragments with the water surface 25mm higher than the ceramic bowl fragments, wiping the ceramic bowl fragments with cloth, coating red ink, checking whether cracks exist, rechecking once after 24 hours, and checking whether the cracks exist, thereby judging the thermal stability of the ceramic bowl.
Water absorption test: taking 5 pieces of ceramic bowl fragments, cleaning, drying, weighing the ceramic bowl fragments respectively, separating the ceramic bowl fragments, putting the ceramic bowl fragments into distilled water, boiling for 3 hours, keeping the water level higher than the ceramic bowl fragments by more than 10mm, fishing out the ceramic bowl fragments, wiping off water attached to the surfaces of the ceramic bowl fragments by using water saturated cloth, quickly and respectively weighing the ceramic bowl fragments, calculating the water absorption rate of each ceramic bowl fragment through a formula, and calculating the average water absorption rate of the 5 pieces of ceramic bowl fragments to obtain the water absorption rate of the ceramic bowl, wherein the lower the water absorption rate is, the better the water resistance of the ceramic bowl is.
The results of the above tests on the abrasion resistance, thermal conductivity, thermal stability and water absorption of the chips of the ceramic bowls of examples 1 to 5 and the conventional ceramic bowl as a comparative example are shown in the following table:
table 2 general bowl test data for the bowls described in examples 1 to 5 and the comparative example
Test/results Example 1 Example 2 Example 3 Example 4 Example 5 Comparative example
Abrasion resistance test/occurrence of abrasion Number of grinding revolutions of 9040~9250 9120~9270 10800~ 11050 10050~ 10120 9900~10050 6800~9250
Coefficient of thermal conductivity 29w/m·k 28w/m·k 23w/m·k 26w/m·k 27w/m·k ≥30w/m·k
Thermal stability test Both examinations Without cracks Both examinations Without cracks Both examinations Without cracks TwiceAll the examinations are Without cracks Both examinations Without cracks 1-3 pieces of broken pieces Now cracks
Water absorption test 0.4% 0.3% 0.1% 0.25% 0.3% 0.8~3%
Wherein, the standard of the ceramic wear-resistant grade is 1 to 5 grades, the best grade of 5 grades is the worst grade of 1 grade, and the judgment standard is shown in the following table:
TABLE 3 ceramic abrasion resistance grade judgment Standard
Number of grinding revolutions at which wear occurs Rank of
100 0
150 1
600 2
755,1500 3
2100,6000,12000 4
>12000 5
The ceramic bowls prepared in the embodiments 1 to 5 have bright external surface and fine hand feeling, and the test results show that the ceramic bowls prepared in all the embodiments have the wear resistance of 4 grades, and have the characteristics of strong thermal stability and low water absorption, wherein the ceramic bowl prepared by the raw materials and the process in the embodiment 3 has the best performance, and is the optimal implementation scheme.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. A wear-resistant daily ceramic bowl with high thermal stability comprises a blank body and a glaze layer applied on the blank body, and is characterized in that the blank body is prepared from the following raw materials in parts by weight: 35-40 parts of kaolin, 37-40 parts of mica powder, 20-25 parts of mullite powder, 15-20 parts of allophane, 15-16 parts of zirconium silicate, 15-16 parts of silica sand and 12-15 parts of sodium silicate; the glaze layer comprises the following raw materials in parts by weight: 18-21 parts of kaolin, 10-13 parts of sodium silicate, 7-10 parts of zircon powder, 10-12 parts of alumina, 10-13 parts of silicon oxide, 0.7-0.8 part of ferric oxide, 0.1-0.3 part of titanium oxide and 7-10 parts of carboxymethyl cellulose.
2. The daily ceramic bowl with wear resistance and high thermal stability as claimed in claim 1, wherein the raw material of the glaze layer further comprises 5-8 parts of pigment.
3. The wear-resistant, thermally stable ceramic bowl of claim 1 or 2, wherein the mica powder is muscovite powder.
4. A process for manufacturing a wear-resistant, thermally stable domestic ceramic bowl according to any of claims 1 to 3, comprising the steps of:
1) weighing the raw materials according to the weight parts for later use;
2) mixing the blank raw materials, adding water, grinding until all the blank raw materials can pass through a 105-120-mesh sieve, wherein the solid content is 45-50%, then carrying out vacuum defoaming for 5-20 minutes under the conditions of 70-85 ℃ and-2-0.5 MPa to obtain pug, then stirring for 3-10 minutes at the speed of 2-5 r/s under the conditions of 55-75 ℃, adjusting the solid content of the pug to 65-70% in the stirring process, then shaping the pug to obtain a rough blank, naturally drying in the shade, then carrying out blank benefiting, and finally carrying out biscuit firing under the conditions of 300-500 ℃ to obtain a biscuit ceramic bowl;
3) mixing the glaze layer raw materials, adding water, grinding until the glaze layer raw materials can completely pass through a sieve of 80-100 meshes, wherein the solid content is 40-55%, then carrying out vacuum defoaming for 5-12 minutes at 80-85 ℃ and-2-1.5 MPa to obtain glaze water, glazing the biscuit firing ceramic bowl obtained in the step (2) by using the glaze water, and finally carrying out glaze firing for 2-3 hours at 1100-1200 ℃ to obtain the daily ceramic bowl with wear resistance and strong thermal stability.
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