CN112723859A - High-strength white porcelain glaze ceramic product and preparation method thereof - Google Patents

High-strength white porcelain glaze ceramic product and preparation method thereof Download PDF

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CN112723859A
CN112723859A CN202011610374.7A CN202011610374A CN112723859A CN 112723859 A CN112723859 A CN 112723859A CN 202011610374 A CN202011610374 A CN 202011610374A CN 112723859 A CN112723859 A CN 112723859A
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parts
glaze
raw materials
water
ceramic product
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郭建洲
郑秋霞
苏锦虎
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Fujian Dehua Wuzhou Ceramics Co ltd
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Fujian Dehua Wuzhou Ceramics Co ltd
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Abstract

The invention provides a high-strength white porcelain glaze ceramic product and a preparation method thereof, wherein the high-strength white porcelain glaze ceramic product comprises a matrix material and a glaze material, wherein the matrix material comprises the following raw materials: kaolin, potash feldspar, limestone, fluxing agent, zircon and ceramic micro powder; the glaze comprises the following raw materials: albite, limestone, montmorillonite, quartz, magnesium oxide, iron oxide, aluminum oxide, plant ash and zircon. The preparation method of the high-strength white porcelain glaze ceramic product comprises the following steps: firstly, preparing raw materials; preparing biscuit firing from the blank; preparing glaze water; and fourthly, glazing and firing. The ceramic product made by adopting the raw materials and the making process provided by the invention has smooth and bright color, is milky white like condensed fat, is pink or milky white in glaze under illumination, and has the characteristics of high glaze brightness, fine porcelain quality, firmness, durability, easy cleaning and difficult breakage.

Description

High-strength white porcelain glaze ceramic product and preparation method thereof
Technical Field
The invention belongs to the technical field of ceramics, and particularly relates to a high-strength white porcelain glaze ceramic product and a preparation method thereof.
Background
The Chinese porcelain has a long history and a plurality of varieties. Except for noble and elegant blue and white and colorful porcelain. The vegetarian white porcelain is also a favorite variety of people, and although the porcelain does not have gorgeous patterns and bright colors, the porcelain is shown to be beautiful in nature in simple and magnificent way. The white porcelain generally refers to porcelain with white porcelain body and transparent glaze on the surface. Many Tang dynasties white porcelains are collected in Shanghai museum. The white porcelain of the Tang Dynasty is made with the advantages of clean body soil, less impurities, fine body and higher whiteness, the reflected color is white after a layer of transparent glaze is coated, the tea Shengluyu is in the tea classic, the white porcelain of the Tang Dynasty kiln was previously promoted and the body glaze is white like snow and silver.
The white porcelain is generally made by firing a porcelain blank with low iron content after applying pure transparent glaze, and the porcelain blank is glazed and then put into a kiln to be fired into a plain white porcelain at high temperature because the glaze does not contain or only contains trace coloring agent. The white porcelain can reflect the color of tea soup because of pure white color, so the white porcelain is deeply loved by the people, can be manufactured into daily necessities such as bowls, dishes, cups and the like, can also be manufactured into exquisite artware, and can also be manufactured into decoration and decoration articles such as floors, lamp shades and the like, thereby having very high application and collection values. At present, the same glaze color of the ceramic product can be generally divided into a dull glaze and a glossy glaze in terms of gloss, so that the gloss presented is relatively single. The surface glossiness of white ceramic products on the market is generally not high and can not reach the higher and higher aesthetic standard of consumers, and a new technical scheme is needed to be improved.
Disclosure of Invention
Based on the prior art, the invention aims to provide a high-strength white porcelain glaze ceramic product and a preparation method thereof, wherein the product has high strength, is not easy to crack, has smooth and bright glaze surface, is milky white like coagulated fat, shows pink or milky white in the glaze under illumination, has the characteristics of high glaze surface brightness and fine porcelain quality, and gives people a special aesthetic feeling.
In order to achieve the above purpose, the invention adopts the technical scheme that:
the high-strength white porcelain glaze ceramic product comprises a stuffing and a glaze, wherein the stuffing comprises the following raw materials in parts by weight: 25-35 parts of kaolin, 45-60 parts of potassium feldspar, 25-35 parts of limestone, 8-12 parts of fluxing agent, 2-5 parts of zircon and 5-10 parts of ceramic micro powder; the glaze comprises the following raw materials: 25-35 parts of albite, 20-30 parts of limestone, 8-12 parts of montmorillonite, 5-8 parts of quartz, 1.5-2.5 parts of magnesium oxide, 0.5-1.5 parts of ferric oxide, 13-18 parts of alumina, 2-5 parts of plant ash and 1-2 parts of zircon.
In order to better realize the invention, further, the fluxing agent comprises the following raw materials in parts by weight: 26-33 parts of aluminum oxide, 5-10 parts of potassium oxide, 0.5-2.0 parts of ferric oxide and 0.8-1.5 parts of magnesium oxide.
In order to better realize the invention, the tyre material further comprises the following raw materials in parts by weight: 30 parts of kaolin, 50 parts of potassium feldspar, 30 parts of limestone, 10 parts of fluxing agent, 4 parts of zircon and 6 parts of ceramic micro powder; wherein the fluxing agent comprises the following components in parts by weight: 30 parts of aluminum oxide, 8 parts of potassium oxide, 1.1 parts of ferric oxide and 1.0 part of magnesium oxide; the glaze comprises the following raw materials: 30 parts of albite, 25 parts of limestone, 10 parts of montmorillonite, 6 parts of quartz, 2 parts of magnesium oxide, 1 part of iron oxide, 15 parts of aluminum oxide, 4 parts of plant ash and 1.5 parts of zircon.
The invention also provides a method for preparing the high-strength white porcelain glaze ceramic product, which comprises the following steps:
step 1, raw material preparation: weighing the raw materials according to the parts by weight for later use;
step 2, biscuit manufacturing: mixing the green body materials, adding water, performing ball milling by using alumina balls as ball milling media, allowing slurry subjected to wet milling to pass through a 200-mesh sieve, removing iron by using a magnetic separator, performing filter pressing by using a hydraulic mud press to obtain a mud cake, wherein the water content of the mud cake is 25-35%, shaping the green body materials, performing blank benefiting and airing, and performing biscuit firing at low temperature to obtain a green body;
step 3, glaze water preparation: mixing glaze layer raw materials, adding water, performing ball milling by using alumina balls as a ball milling medium, passing wet-milled glaze slurry through a 325-mesh sieve, and performing ball milling and sieving to obtain glaze water, wherein the water content of the glaze water is adjusted to be 55-70%;
step 4, glazing and firing: and (3) uniformly applying the glaze water obtained in the step (3) on the surface of the biscuit obtained in the step (2), airing and firing at a high temperature to obtain the high-strength white porcelain glaze ceramic product.
In order to better implement the invention, further, in step 2, the weight ratio of water added during wet grinding of the tire material is as follows: ball: water is 1: 1.5-2.0: 0.5-0.7, and the ball milling time is 16-24 h.
In order to better realize the invention, the low-temperature biscuiting condition in the step 2 is that the blank body is aired, then is put into a kiln to be biscuited for 6-12 h at 700-780 ℃, and is taken out of the kiln after being naturally cooled to 40-60 ℃ to obtain a biscuit;
in order to better implement the invention, further, the weight ratio of water added during wet grinding of glaze in the step 3 is as follows: ball: water is 1: 2.0-2.5: 0.5-0.7, and the ball milling time is 24-30 h.
In order to better realize the invention, further, the thickness of the glaze layer on the surface of the unglazed blank in the step 4 is 0.5-1.0 mm.
In order to better implement the present invention, further, the high-temperature firing process in step 4 specifically includes the following steps:
putting the glazed biscuit into a kiln, and heating the biscuit to 1000 ℃ uniformly in an oxidizing atmosphere for 8-12 hours;
uniformly raising the temperature to 1150-1250 ℃ in a reducing atmosphere for 3-5 h;
and thirdly, keeping the temperature for 2-4 hours in a neutral atmosphere, then annealing and rapidly cooling to room temperature to obtain the coating.
Advantageous effects
The invention has the following beneficial effects:
(1) according to the high-strength white porcelain glaze ceramic product, kaolin, potash feldspar, limestone, a fluxing agent, zircon and ceramic micro powder are used as blank materials, wherein the kaolin is a main blank forming raw material, so that the blank raw material is easier to shape, and the shaped blank has certain dry strength and is not easy to deform and crack under the influence of external force; the potash feldspar can play a role of barren raw materials before firing, reduce the drying shrinkage and deformation of a blank, improve the drying performance, shorten the drying time, enable all the raw materials to be more fully mixed by the aid of the fluxing agent, and can serve as a fluxing agent to reduce the firing temperature during firing so as to promote all the components to be molten; the compactness of the fired ceramic product is improved, the hardness, the wear resistance and the water resistance of the ceramic product are further improved, the dispersibility of the ceramic micro powder is good, the whiteness is high, the chemical stability is good, the loss on ignition is low, and the transparency, the corrosion resistance and the high temperature resistance of the ceramic product can be improved by adding the ceramic micro powder into the ceramic product; the zircon increases the hardness of the finished product.
(2) The invention provides a high-strength white porcelain glaze ceramic product, which adopts different raw materials and proportions of a blank raw material and a glaze layer raw material, mixes and grinds the blank raw material, adds water to prepare a blank mud material, shapes the blank to obtain a blank, performs low-temperature biscuit firing, performs biscuit firing, glazing, and then performs medium-temperature firing to ensure that the glaze color is uniform, if the temperature is higher, the glaze fluidity is large, and the glaze layer thickness is non-uniform; if the temperature is too low, the color tone becomes gray and the luster becomes unclear. When the ceramic product is fired, the color is whiter under the neutral atmosphere, and is easy to turn yellow under the oxygen atmosphere, and is easy to turn red under the reducing atmosphere, so that the hundredth and the glossiness of the ceramic product are increased.
(3) The enamel raw materials of the high-strength white porcelain glaze ceramic product mainly adopt calcium raw materials, quartz raw materials and rock raw materials, and are combined with less ash materials, namely limestone and plant ash, the proportion is close to that of the inert kiln white porcelain, the prepared ceramic product has the effect of 'transparent shadow', the glaze surface is smooth and bright, is milky white like coagulated fat, and pink or milky white appears in the glaze under illumination, has the characteristics of high glaze brightness and fine porcelain quality, and gives people a special aesthetic feeling.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1
The embodiment provides a high-strength white porcelain glaze ceramic product, which comprises a stuffing and a glaze, wherein the stuffing comprises the following raw materials in parts by weight: 25 parts of kaolin, 45 parts of potassium feldspar, 25 parts of limestone, 8 parts of fluxing agent, 2 parts of zircon and 5 parts of ceramic micro powder; the glaze comprises the following raw materials: 25 parts of albite, 20 parts of limestone, 8 parts of montmorillonite, 5 parts of quartz, 1.5 parts of magnesium oxide, 0.5 part of iron oxide, 13 parts of aluminum oxide, 2 parts of plant ash and 1 part of zircon.
Specifically, the fluxing agent comprises the following raw materials in parts by weight: 26 parts of aluminum oxide, 5 parts of potassium oxide, 0.5 part of ferric oxide and 0.8 part of magnesium oxide.
The embodiment also provides a preparation method of the high-strength white porcelain glaze ceramic product, which comprises the following steps:
step 1, raw material preparation: weighing the raw materials according to the parts by weight for later use;
step 2, biscuit manufacturing: mixing the base material, adding water, and then carrying out ball milling by using alumina balls as ball milling media, wherein the weight ratio of the added water is as follows: ball: water is 1:1.5:0.5, and the ball milling time is 24 h; passing the slurry subjected to wet grinding through a 200-mesh sieve, removing iron by a magnetic separator, and then performing filter pressing by using a hydraulic mud press to obtain a mud cake, wherein the water content of the mud cake is 35%, shaping the blank body mud material, then performing blank benefiting and airing, and then performing biscuit firing at low temperature, wherein the conditions are that the blank body is aired, then putting into a kiln, biscuit firing at 780 ℃ for 12h, naturally cooling the kiln temperature to 60 ℃, and then taking out of the kiln to obtain a biscuit;
step 3, glaze water preparation: mixing glaze layer raw materials, adding water, and then carrying out ball milling by using alumina balls as ball milling media, wherein the weight ratio of the added water is as follows: ball: water is 1:2.0:0.5, and the ball milling time is 30 h; sieving wet-milled glaze slurry through a 325-mesh sieve, ball-milling and sieving to obtain glaze water, wherein the water content of the glaze water is adjusted to be 70%;
step 4, glazing and firing: uniformly applying the glaze water obtained in the step (3) on the surface of the unglazed tire obtained in the step (2), wherein the thickness of a glaze layer on the surface of the unglazed tire after glazing is 1.0 mm; and (3) high-temperature firing after air drying, wherein the high-temperature firing process specifically comprises the following steps: putting the glazed biscuit into a kiln, and heating the biscuit to 1000 ℃ uniformly in an oxidizing atmosphere for 8 hours; uniformly raising the temperature to 1150 ℃ in a reducing atmosphere for 3 hours; keeping the temperature for 4 hours in a neutral atmosphere, then annealing and rapidly cooling to room temperature to obtain the product.
Example 2
The embodiment provides a high-strength white porcelain glaze ceramic product, which comprises a stuffing and a glaze, wherein the stuffing comprises the following raw materials in parts by weight: 28 parts of kaolin, 50 parts of potassium feldspar, 28 parts of limestone, 9 parts of fluxing agent, 3 parts of zircon and 6 parts of ceramic micro powder; the glaze comprises the following raw materials: 28 parts of albite, 23 parts of limestone, 9 parts of montmorillonite, 6 parts of quartz, 1.8 parts of magnesium oxide, 0.6 part of iron oxide, 14 parts of aluminum oxide, 3 parts of plant ash and 1.2 parts of zircon.
Specifically, the fluxing agent comprises the following raw materials in parts by weight: 28 parts of aluminum oxide, 6 parts of potassium oxide, 0.8 part of ferric oxide and 1.0 part of magnesium oxide.
The embodiment also provides a preparation method of the high-strength white porcelain glaze ceramic product, which comprises the following steps:
step 1, raw material preparation: weighing the raw materials according to the parts by weight for later use;
step 2, biscuit manufacturing: mixing the base material, adding water, and then carrying out ball milling by using alumina balls as ball milling media, wherein the weight ratio of the added water is as follows: ball: water is 1:1.8:0.5, and the ball milling time is 20 h; passing the slurry subjected to wet grinding through a 200-mesh sieve, removing iron by a magnetic separator, and then performing filter pressing by using a hydraulic mud press to obtain a mud cake, wherein the water content of the mud cake is 35%, shaping the blank body mud material, then performing blank benefiting and airing, and then performing biscuit firing at low temperature, wherein the conditions are that the blank body is aired, then putting into a kiln, biscuit firing at 780 ℃ for 12h, naturally cooling the kiln temperature to 60 ℃, and then taking out of the kiln to obtain a biscuit;
step 3, glaze water preparation: mixing glaze layer raw materials, adding water, and then carrying out ball milling by using alumina balls as ball milling media, wherein the weight ratio of the added water is as follows: ball: water is 1:2.2:0.5, and the ball milling time is 30 h; sieving wet-milled glaze slurry through a 325-mesh sieve, ball-milling and sieving to obtain glaze water, wherein the water content of the glaze water is adjusted to 65%;
step 4, glazing and firing: uniformly applying the glaze water obtained in the step (3) on the surface of the unglazed tire obtained in the step (2), wherein the thickness of a glaze layer on the surface of the unglazed tire after glazing is 0.8 mm; and (3) high-temperature firing after air drying, wherein the high-temperature firing process specifically comprises the following steps: putting the glazed biscuit into a kiln, and heating the biscuit to 1000 ℃ uniformly in an oxidizing atmosphere for 9 hours; under the reducing atmosphere, the temperature is uniformly increased to 1180 ℃ within 3 hours; and (3) keeping the temperature for 3 hours in a neutral atmosphere, then annealing and rapidly cooling to room temperature to obtain the product.
Example 3
The embodiment provides a high-strength white porcelain glaze ceramic product, which comprises a stuffing and a glaze, wherein the stuffing comprises the following raw materials in parts by weight: 30 parts of kaolin, 50 parts of potassium feldspar, 30 parts of limestone, 10 parts of fluxing agent, 4 parts of zircon and 6 parts of ceramic micro powder; the glaze comprises the following raw materials: 30 parts of albite, 25 parts of limestone, 10 parts of montmorillonite, 6 parts of quartz, 2 parts of magnesium oxide, 1 part of iron oxide, 15 parts of aluminum oxide, 4 parts of plant ash and 1.5 parts of zircon.
Specifically, the fluxing agent comprises the following raw materials in parts by weight: 30 parts of aluminum oxide, 8 parts of potassium oxide, 1.1 parts of iron oxide and 1.0 part of magnesium oxide.
The embodiment also provides a preparation method of the high-strength white porcelain glaze ceramic product, which comprises the following steps:
step 1, raw material preparation: weighing the raw materials according to the parts by weight for later use;
step 2, biscuit manufacturing: mixing the base material, adding water, and then carrying out ball milling by using alumina balls as ball milling media, wherein the weight ratio of the added water is as follows: ball: water is 1:1.8:0.6, and the ball milling time is 20 h; passing the slurry subjected to wet grinding through a 200-mesh sieve, removing iron by a magnetic separator, and then performing filter pressing by using a hydraulic mud press to obtain a mud cake, wherein the water content of the mud cake is 30%, shaping the blank body mud material, then performing blank benefiting and airing, and then performing biscuit firing at low temperature, wherein the conditions are that the blank body is aired, then the blank body is put into a kiln for biscuit firing at 750 ℃ for 8h, and the kiln temperature is naturally cooled to 50 ℃ and then taken out of the kiln to obtain a biscuit;
step 3, glaze water preparation: mixing glaze layer raw materials, adding water, and then carrying out ball milling by using alumina balls as ball milling media, wherein the weight ratio of the added water is as follows: ball: water is 1:2.3:0.6, and the ball milling time is 26 h; sieving wet-milled glaze slurry through a 325-mesh sieve, ball-milling and sieving to obtain glaze water, wherein the water content of the glaze water is adjusted to be 60%;
step 4, glazing and firing: uniformly applying the glaze water obtained in the step (3) on the surface of the unglazed tire obtained in the step (2), wherein the thickness of a glaze layer on the surface of the unglazed tire after glazing is 0.8 mm; and (3) high-temperature firing after air drying, wherein the high-temperature firing process specifically comprises the following steps: putting the glazed biscuit in a kiln, and heating in an oxidizing atmosphere to uniformly raise the temperature to 1000 ℃ within 10 hours; under the reducing atmosphere, the temperature is uniformly raised to 1200 ℃ within 4 h; and (3) keeping the temperature for 3 hours in a neutral atmosphere, then annealing and rapidly cooling to room temperature to obtain the product.
Example 4
The embodiment provides a high-strength white porcelain glaze ceramic product, which comprises a stuffing and a glaze, wherein the stuffing comprises the following raw materials in parts by weight: 33 parts of kaolin, 55 parts of potassium feldspar, 33 parts of limestone, 11 parts of fluxing agent, 4 parts of zircon and 8 parts of ceramic micro powder; the glaze comprises the following raw materials: 32 parts of albite, 28 parts of limestone, 11 parts of montmorillonite, 7 parts of quartz, 2.0 parts of magnesium oxide, 1.2 parts of iron oxide, 16 parts of aluminum oxide, 4 parts of plant ash and 1.8 parts of zircon.
Specifically, the fluxing agent comprises the following raw materials in parts by weight: 31 parts of aluminum oxide, 9 parts of potassium oxide, 1.5 parts of iron oxide and 1.3 parts of magnesium oxide.
The embodiment also provides a preparation method of the high-strength white porcelain glaze ceramic product, which comprises the following steps:
step 1, raw material preparation: weighing the raw materials according to the parts by weight for later use;
step 2, biscuit manufacturing: mixing the base material, adding water, and then carrying out ball milling by using alumina balls as ball milling media, wherein the weight ratio of the added water is as follows: ball: water is 1:1.8:0.6, and the ball milling time is 18 h; passing the slurry subjected to wet grinding through a 200-mesh sieve, removing iron by a magnetic separator, and then performing filter pressing by using a hydraulic mud press to obtain a mud cake, wherein the water content of the mud cake is 30%, shaping the blank body mud material, then performing blank benefiting and airing, and then performing biscuit firing at low temperature under the condition that the blank body is aired, then putting the blank body into a kiln for biscuit firing at 740 ℃ for 8h, naturally cooling the kiln to 50 ℃, and then taking the blank body out of the kiln to obtain a biscuit;
step 3, glaze water preparation: mixing glaze layer raw materials, adding water, and then carrying out ball milling by using alumina balls as ball milling media, wherein the weight ratio of the added water is as follows: ball: water is 1:2.5:0.6, and the ball milling time is 26 h; sieving wet-milled glaze slurry through a 325-mesh sieve, ball-milling and sieving to obtain glaze water, wherein the water content of the glaze water is adjusted to be 60%;
step 4, glazing and firing: uniformly applying the glaze water obtained in the step (3) on the surface of the unglazed tire obtained in the step (2), wherein the thickness of a glaze layer on the surface of the unglazed tire after glazing is 0.8 mm; and (3) high-temperature firing after air drying, wherein the high-temperature firing process specifically comprises the following steps: putting the glazed biscuit in a kiln, and heating in an oxidizing atmosphere to uniformly raise the temperature to 1000 ℃ within 10 hours; uniformly raising the temperature to 1230 ℃ in a reducing atmosphere for 5 h; and (3) keeping the temperature for 3 hours in a neutral atmosphere, then annealing and rapidly cooling to room temperature to obtain the product.
Example 5
The embodiment provides a high-strength white porcelain glaze ceramic product, which comprises a stuffing and a glaze, wherein the stuffing comprises the following raw materials in parts by weight: 35 parts of kaolin, 60 parts of potassium feldspar, 35 parts of limestone, 12 parts of fluxing agent, 5 parts of zircon and 10 parts of ceramic micro powder; the glaze comprises the following raw materials: 35 parts of albite, 30 parts of limestone, 12 parts of montmorillonite, 8 parts of quartz, 2.5 parts of magnesium oxide, 1.5 parts of iron oxide, 18 parts of aluminum oxide, 5 parts of plant ash and 2 parts of zircon.
Specifically, the fluxing agent comprises the following raw materials in parts by weight: 33 parts of aluminum oxide, 10 parts of potassium oxide, 2.0 parts of iron oxide and 1.5 parts of magnesium oxide.
The embodiment also provides a preparation method of the high-strength white porcelain glaze ceramic product, which comprises the following steps:
step 1, raw material preparation: weighing the raw materials according to the parts by weight for later use;
step 2, biscuit manufacturing: mixing the base material, adding water, and then carrying out ball milling by using alumina balls as ball milling media, wherein the weight ratio of the added water is as follows: ball: water is 1:2.0:0.7, and the ball milling time is 16 h; passing the slurry subjected to wet grinding through a 200-mesh sieve, removing iron by a magnetic separator, and then performing filter pressing by using a hydraulic mud press to obtain a mud cake with 25% of water content, shaping blank pug, then performing blank benefiting and airing, and then performing biscuit firing at low temperature under the condition that the blank is aired and then enters a kiln to be biscuit fired at 700 ℃ for 6h, and naturally cooling the kiln to 40 ℃ and then taking out of the kiln to obtain a biscuit;
step 3, glaze water preparation: mixing glaze layer raw materials, adding water, and then carrying out ball milling by using alumina balls as ball milling media, wherein the weight ratio of the added water is as follows: ball: water is 1:2.5:0.7, and the ball milling time is 24 h; sieving wet-milled glaze slurry through a 325-mesh sieve, ball-milling and sieving to obtain glaze water, wherein the water content of the glaze water is adjusted to be 55%;
step 4, glazing and firing: uniformly applying the glaze water obtained in the step (3) on the surface of the unglazed tire obtained in the step (2), wherein the thickness of a glaze layer on the surface of the unglazed tire after glazing is 0.5 mm; and (3) high-temperature firing after air drying, wherein the high-temperature firing process specifically comprises the following steps: putting the glazed biscuit in a kiln, and heating in an oxidizing atmosphere to uniformly raise the temperature to 1000 ℃ within 12 hours; uniformly raising the temperature to 1250 ℃ in a reducing atmosphere within 5 h; and (3) keeping the temperature for 2 hours in a neutral atmosphere, then annealing and rapidly cooling to room temperature to obtain the product.
The raw materials used for the high-strength white-glazed ceramic articles provided in the above examples 1 to 5 are as shown in table 1 below:
TABLE 1 raw materials and parts by weight
The high strength white enamel ceramic articles prepared in examples 1 to 5 above were subjected to the tests of bulk density, hardness, whiteness, gloss, transmittance, thermal stability as follows:
bulk density test: the volume density of the fragments of the white porcelain glaze ceramic product is tested according to the national standard 'test method for apparent porosity and volume density of ceramic blank' (QB/T1642-2012).
And (3) hardness testing: the Vickers hardness is tested by using a diamond indenter loading and pressing method, namely, a diamond pyramid with a diagonal surface of 136 degrees is used as an indenter, the indenter is pressed into the surface of the ceramic under the load action of 9.807-490.3 (1-50 kgf), the load is removed after the indenter is kept for a certain time, an indentation is left on the surface of the material, the length of the diagonal line of the indentation and the area of the indentation are measured, and the load-stress born on a unit area, namely the Vickers hardness HV, is solved, wherein the higher the numerical value is, the higher the hardness is.
And (3) whiteness testing: performing whiteness test according to the provisions of the national standard GB/T3298-1991 method for measuring thermal stability of daily-use ceramics, taking fragments of white porcelain glaze ceramics as a sample, cleaning, drying, grinding to a size of 0.104mm, drying at 105-110 ℃ for 1h, during the test, taking a certain amount of powder, flowing into a powder sample press, pressing into a sample plate with a smooth surface, no cracks and no defects, and then testing the whiteness value by using a whiteness tester, wherein the higher the whiteness value is, the more white the sample is.
And (3) testing the glossiness: the test was carried out according to the specifications of the national standard GB/T3295-1996 test method for 45 ℃ specular gloss in ceramics, using a gloss meter.
And (3) testing the transmittance: according to the specification of the national standard GB 3296-2The fragments of white jade porcelain product of r are taken as samples, are respectively ground to the thicknesses of 0.500 mm, 1.000 mm and 1.500mm, and are tested by a transmittance instrument, and the transmittance of the samples is expressed by the relative percentage intensity of the transmitted light of the samples with the thickness of 1 mm, wherein the incident light intensity is 100.
And (3) testing thermal stability: taking 5 pieces of white porcelain glaze ceramic product fragments as samples, placing the samples at 280 ℃ for heat preservation for 300 minutes, taking out the samples after the heat preservation is finished, performing accounting, putting the samples into water with the temperature of 20 ℃ at a rapid speed within 15s, and soaking the samples for 10 minutes, wherein the weight ratio of the water to the weight of the samples is 8: 1, the water surface is 25mm higher than the sample, the sample is taken out and wiped by cloth, red ink is coated on the sample, whether cracks exist or not is checked, and the check is carried out once again after 24 hours, so that the fewer cracks are generated, and the better the thermal stability of the sample is.
The results obtained by the tests are shown in the following table 2:
TABLE 2 test results
Test results Example 1 Example 2 Example 3 Example 4 Example 5
Bulk density g/cm2 3.33 3.36 3.42 3.29 3.36
Vickers hardness HV 3780 3880 3850 3830 3810
Whiteness degree ° 86 88 92 90 87
Degree of gloss 120 128 125 119 114
Transmittance of light% 80 81 85 84 83
Thermal stability test Without cracks Without cracks Without cracks Without cracks Without cracks
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 (9)

1. The high-strength white porcelain glaze ceramic product comprises a padding material and a glaze material, and is characterized in that the padding material comprises the following raw materials in parts by weight: 25-35 parts of kaolin, 45-60 parts of potassium feldspar, 25-35 parts of limestone, 8-12 parts of fluxing agent, 2-5 parts of zircon and 5-10 parts of ceramic micro powder; the glaze comprises the following raw materials: 25-35 parts of albite, 20-30 parts of limestone, 8-12 parts of montmorillonite, 5-8 parts of quartz, 1.5-2.5 parts of magnesium oxide, 0.5-1.5 parts of ferric oxide, 13-18 parts of alumina, 2-5 parts of plant ash and 1-2 parts of zircon.
2. A high strength white enamel ceramic product as claimed in claim 1 wherein the flux comprises the following raw materials in parts by weight: 26-33 parts of aluminum oxide, 5-10 parts of potassium oxide, 0.5-2.0 parts of ferric oxide and 0.8-1.5 parts of magnesium oxide.
3. The high-strength white porcelain glaze ceramic product of claim 1, wherein the matrix material comprises the following raw materials in parts by weight: 30 parts of kaolin, 50 parts of potassium feldspar, 30 parts of limestone, 10 parts of fluxing agent, 4 parts of zircon and 6 parts of ceramic micro powder; wherein the fluxing agent comprises the following components in parts by weight: 30 parts of aluminum oxide, 8 parts of potassium oxide, 1.1 parts of ferric oxide and 1.0 part of magnesium oxide; the glaze comprises the following raw materials: 30 parts of albite, 25 parts of limestone, 10 parts of montmorillonite, 6 parts of quartz, 2 parts of magnesium oxide, 1 part of iron oxide, 15 parts of aluminum oxide, 4 parts of plant ash and 1.5 parts of zircon.
4. A method of manufacturing a high strength white enamel ceramic article according to claim 1 or 3, comprising the steps of:
step 1, raw material preparation: weighing the raw materials according to the parts by weight for later use;
step 2, biscuit manufacturing: mixing the green body materials, adding water, performing ball milling by using alumina balls as ball milling media, allowing slurry subjected to wet milling to pass through a 200-mesh sieve, removing iron by using a magnetic separator, performing filter pressing by using a hydraulic mud press to obtain a mud cake, wherein the water content of the mud cake is 25-35%, shaping the green body materials, performing blank benefiting and airing, and performing biscuit firing at low temperature to obtain a green body;
step 3, glaze water preparation: mixing glaze layer raw materials, adding water, performing ball milling by using alumina balls as a ball milling medium, passing wet-milled glaze slurry through a 325-mesh sieve, and performing ball milling and sieving to obtain glaze water, wherein the water content of the glaze water is adjusted to be 55-70%;
step 4, glazing and firing: and (3) uniformly applying the glaze water obtained in the step (3) on the surface of the biscuit obtained in the step (2), airing and firing at a high temperature to obtain the high-strength white porcelain glaze ceramic product.
5. The method for preparing a high-strength white porcelain glaze ceramic product according to claim 4, wherein the weight ratio of water added during wet grinding of the matrix material in the step 2 is as follows: ball: water =1: 1.5-2.0: 0.5-0.7, and the ball milling time is 16-24 h.
6. The preparation method of the high-strength white porcelain glaze ceramic product according to claim 4, wherein the low-temperature bisque firing conditions in the step 2 are that the green body is dried in the air, then is bisque fired in a kiln at 700-780 ℃ for 6-12 h, and is taken out of the kiln after being naturally cooled to 40-60 ℃ to obtain a bisque.
7. The method for preparing a high-strength white porcelain glaze ceramic product according to claim 4, wherein the weight ratio of water added during wet grinding of glaze in the step 3 is as follows: ball: water =1: 2.0-2.5: 0.5-0.7, and the ball milling time is 24-30 h.
8. The method for preparing the high-strength white porcelain glaze ceramic product according to claim 4, wherein the thickness of the glaze layer on the surface of the unglazed blank in the step 4 is 0.5-1.0 mm.
9. The method for preparing a high-strength white porcelain glaze ceramic product according to claim 4, wherein the high-temperature firing process in the step 4 specifically comprises the following steps:
putting the glazed biscuit into a kiln, and heating the biscuit to 1000 ℃ uniformly in an oxidizing atmosphere for 8-12 hours;
uniformly raising the temperature to 1150-1250 ℃ in a reducing atmosphere for 3-5 h;
and thirdly, keeping the temperature for 2-4 hours in a neutral atmosphere, then annealing and rapidly cooling to room temperature to obtain the coating.
CN202011610374.7A 2020-12-29 2020-12-29 High-strength white porcelain glaze ceramic product and preparation method thereof Pending CN112723859A (en)

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