Ivory white matte glaze and preparation method thereof

Abstract

The application discloses ivory white matte glaze and a preparation method thereof, and relates to the technical field of ceramic materials. The ivory white matte glaze comprises the following components in percentage by weight: 44.0-46.0% of potassium feldspar, 19-19.5% of calcite, 11.0-11.5% of kaolin, 8.0-8.5% of aluminum oxide, 6.0-6.3% of barium carbonate, 9.5-10.5% of titanium dioxide and 0.4-0.6% of iron oxide. The preparation method comprises the following steps: step 1), weighing each component according to the proportion, grinding with water and sieving to obtain glaze water; step 2), coating the glaze water on the surface of a blank; and step 3), putting the glazed blank into a kiln for sintering, and then taking out the blank after cooling. Through the optimization of the proportion design and the glaze preparation method, the ivory white matte glaze has the characteristics of high-grade texture and texture change, so that the aesthetic feeling can be obtained from the visual and tactile feeling.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ceramic materials, in particular to an ivory white matte glaze and a preparation method thereof. BACKGROUND

[0002] With the improvement of people's material life, the aesthetic of modern people also changes with the times, so a love for simple, elegant, textured matte glaze craze is formed in the society. At present, the glaze used in high-temperature tea sets and ceramic art on the market is too dazzling, has strong glass texture and lacks senior texture in glaze touch, which is difficult to meet the increasing aesthetic needs of contemporary people. SUMMARY

[0003] In view of the problems in the prior art, the present application provides an ivory white matte glaze and a preparation method thereof. Through the optimization of the ratio design and the glaze preparation method, senior texture with matte surface is generated, and texture changes and other characteristics are accompanied, so that the glaze color can obtain relatively strong aesthetic feeling from visual and tactile feeling, and the problems of too dazzling, strong glass texture and lack of senior texture in glaze touch of high-temperature color glaze used in daily ceramic wares are solved.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] The present application provides an ivory white matte glaze, which comprises the following components in percentage by weight: 44.0-46.0% of potassium feldspar, 19-19.5% of calcite, 11.0-11.5% of kaolin, 8.0-8.5% of aluminum oxide, 6.0-6.3% of barium carbonate, 9.5-10.5% of titanium dioxide and 0.4-0.6% of iron oxide.

[0006] Beneficial effects:

[0007] The feldspar can play the role of barren raw material before firing, reduce the drying shrinkage and deformation of the body, improve the drying performance and shorten the drying time. During firing, it can act as a flux to reduce the firing temperature and promote the fusion of kaolin.

[0008] The main role of calcite is to reduce the glaze melting temperature, increase the gloss of the glaze color and prevent the glaze from cracking and piling up.

[0009] Kaolin is a non-metallic clay mineral, which is white and delicate, soft and soil-like, has good plasticity and fire resistance, etc. It is also called white clay because of its white color and delicacy. Kaolin has certain plasticity and adhesion. In the glaze, it gives the glaze good adhesion, suspension and binding capacity.

[0010] Barium carbonate can react with other oxides to form stable compounds, thereby reducing the porosity and defects of the glaze, and improving the density and transparency of the glaze.

[0011] The addition of iron oxide in the white glaze can increase the wettability and adhesion of the glaze, and improve the hardness and wear resistance of the glaze layer. Meanwhile, the iron oxide can also control the color and luster of the glaze.

[0012] In the present application, kaolin, titanium dioxide and barium carbonate are white, and iron oxide is red, and the amount of iron oxide is trace amount, so that the glaze color is thick and close to ivory white. The barium carbonate can present a matte effect. By controlling the proportion of the above-mentioned raw materials and combining with other components, the texture and structure of the glaze layer can be improved, so that the final white glaze layer shows the ivory white matte texture and color, which is warm and has multiple levels.

[0013] Preferably, the following components are included by weight percentage: 45% of potassium feldspar, 19.1% of calcite, 11.2% of kaolin, 8.1% of aluminum oxide, 6.1% of barium carbonate, 10% of titanium dioxide and 0.5% of iron oxide.

[0014] The present application also provides a preparation method of the ivory white matte glaze, which comprises the following steps:

[0015] Step 1) weighing each component according to the proportion, grinding with water and sieving to obtain glaze water;

[0016] Step 2) covering the glaze water on the surface of the body;

[0017] Step 3) putting the glazed body into a kiln for sintering, and then cooling out of the kiln.

[0018] Preferably, the specific gravity of the glaze water in step 1) is 1.40-1.60.

[0019] Preferably, the sieve in step 1) is a 250-mesh sieve.

[0020] Preferably, the weight of the residue is 0.2-0.4%.

[0021] Preferably, the glazing method in step 2) is spraying glazing; and in the process of spraying glazing, the glaze output per unit time is 80-100 g / min.

[0022] Preferably, the thickness of the glaze layer is 1.2-1.8 mm.

[0023] Beneficial effects: by controlling the glaze output and the thickness of the glaze layer, the glaze water can be uniformly distributed in the form of fine points on the surface of the product body, so as to ensure the high-grade texture and changing level of the glaze after sintering.

[0024] Preferably, the sintering process is as follows: sintering at 1260-1280 DEG C under oxidizing atmosphere, and the sintering time is 30 min.

[0025] Preferably, the heating speed is 2-3 DEG C / min, and the heating time is 9.5-11 h.

[0026] Preferably, the cooling process is as follows: slow cooling to 450 DEG C for 12-18 h, then gradually opening the kiln door to cool down, and taking out the product when the temperature is 100-200 DEG C.

[0027] Beneficial effects: through optimization of the sintering process, controlling the cooling rate, improving the product quality stability and yield, and ensuring the matte effect of the glaze surface.

[0028] Compared with the prior art, the present application has the following advantages and technical effects:

[0029] 1. The traditional high-temperature glaze color is mostly smooth, clean and glassy glaze surface effect, and the monotonous and smooth glaze surface touch lacks senior quality and changeable level. Through optimization of the ratio design and glaze preparation method, the glaze has a large melting temperature range and good sintering stability, the glaze layer structure is dense, the color is uniform, the glaze surface has senior matte quality and color effect, and the user's aesthetic experience is greatly improved.

[0030] 2. Through the ratio design, the energy-saving and environment-friendly electric kiln which is advocated by the country can be used to sinter, and senior matte ivory white glaze is sintered under oxidizing atmosphere. The obvious advantages and characteristics are that the more environment-friendly electric kiln can be used to sinter senior matte ivory white glaze anywhere, and the energy-saving and environment-friendly electric kiln can sinter senior matte ivory white glaze, which meets the needs of small factories to produce daily-use ceramic tableware and urban artists to create ceramic artworks. The sintering process is more stable by using the electric kiln, and the sintering method is suitable for wide promotion. The temperature is not stable when sintering by using the coal gas kiln and the charcoal kiln, and the glaze surface is vitrified when the temperature is too high during the sintering process, which is not conducive to the formation of the matte effect.

[0031] 3. Through control of the glaze spraying method, the glaze water is uniformly distributed in the form of fine points on the product body surface, and the senior quality and changeable level of the sintered glaze surface are ensured. Through optimization of the sintering process, the cooling rate is controlled, the product quality stability and yield are improved, and the matte effect of the glaze surface is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0032] The drawings constituting a part of this application provide further understanding of the application, and the schematic embodiments of the application and the description thereof are used to explain the application, and do not constitute improper limitation on the application. In the drawings:

[0033] Figure 1 Ivory white matte glazed porcelain ware prepared for Example 1.

[0034] Figure 2 Ivory white matte glazed porcelain ware prepared for Example 2.

[0035] Figure 3 Ivory white matte glazed stoneware ware prepared for Example 3.

[0036] Figure 4 Ivory white matte glazed stoneware ware prepared for Example 4.

[0037] Figure 5 Ivory white matte glazed porcelain stoneware ware prepared for Example 5.

[0038] Figure 6 The environmental protection type electric kiln used in the embodiment of the present application. DETAILED DESCRIPTION

[0039] Various exemplary embodiments of the present application will now be described in detail, which should be considered to be illustrative of the present application and should not be construed to limit the scope of the present application, and are understood to be illustrative of certain aspects, features and embodiments of the present application.

[0040] It should be understood that the terms used in the present application merely describe particular embodiments and are not intended to limit the present application. In addition, for numerical ranges in the present application, it should be understood that each intermediate value between the upper limit and the lower limit of the range is specifically disclosed. Each smaller range between any stated value or between any stated range and any other stated value or between any stated range and any other stated range is also encompassed within the scope of the present application. The upper and lower limits of these smaller ranges can be independently included or excluded from the range.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Although methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present application, preferred methods and materials are described. All publications mentioned in this specification are herein incorporated by reference to disclose and describe the methods and / or materials in connection with which the publications are cited. The citation of any reference in this specification is not an admission that it is prior art.

[0042] Many modifications and variations of this application specification can be made in the light of the above teachings without departing from the spirit or ambit of the application. Other implementations of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application. The specification and examples are illustrative only.

[0043] As used herein, "comprising", "including", "containing", "having" and other equivalent expressions are intended to be open-ended and mean including, but not limited to.

[0044] In the present application, "room temperature" and "normal temperature" are 25±2℃ unless otherwise specified.

[0045] The raw materials used in the following examples of the present application are commercially available.

[0046] The present application provides an ivory white matte glaze, which comprises the following ingredients in percentage by weight: 44.0-46.0% of potassium feldspar, 19-19.5% of calcite, 11.0-11.5% of kaolin, 8.0-8.5% of aluminum oxide, 6.0-6.3% of barium carbonate, 9.5-10.5% of titanium dioxide, and 0.4-0.6% of iron oxide.

[0047] In a preferred embodiment of the present application, the following ingredients are preferably used in percentage by weight: 45% of potassium feldspar, 19.1% of calcite, 11.2% of kaolin, 8.1% of aluminum oxide, 6.1% of barium carbonate, 10% of titanium dioxide, and 0.5% of iron oxide.

[0048] The present application also provides a preparation method of the ivory white matte glaze, which comprises the following steps:

[0049] Step 1) ingredients are weighed according to the ratio, grinded with water, and sieved to obtain glaze water;

[0050] Step 2) the glaze water is applied to the surface of the body;

[0051] Step 3) the glazed body is put into a kiln for sintering, and then cooled out of the kiln.

[0052] In some embodiments of the present application, the water glaze specific gravity in step 1) is preferably 1.40-1.60, and more preferably 1.45 in the embodiments of the present application.

[0053] In some embodiments of the present application, the sieve in step 1) is preferably a 250-mesh sieve; the weight of the residue is 0.2-0.4%, and more preferably 0.2% in the embodiments of the present application.

[0054] In some embodiments of the present application, the glazing method in step 2) is preferably spraying; the thickness of the glaze layer is preferably 1.2-1.8mm, and more preferably 1.4mm in the embodiments of the present application.

[0055] In some embodiments of the present application, the specific process of sintering is preferably sintering at 1260-1280℃ under an oxidizing atmosphere, and more preferably 1280℃ in the embodiments of the present application; the sintering time is preferably 30min.

[0056] In some embodiments of the present application, the temperature rising rate is preferably 2-3℃ / min; the temperature rising time is preferably 9.5-11h, more preferably 10h in the embodiments of the present application.

[0057] In some embodiments of the present application, the cooling process is as follows: preferably slowly cooling to 450℃ for 12-18h, more preferably 12h in the embodiments of the present application; then gradually opening the kiln door for cooling, preferably taking out the kiln when the temperature is cooled to 100-200℃, more preferably 120℃ in the embodiments of the present application.

[0058] The environmental protection type electric kiln used in the embodiments of the present application is shown in Figure 6 .

[0059] The following examples are further illustrations of the technical solutions of the present application.

[0060] Example 1

[0061] 1) The raw materials are weighed as follows: 45% of potassium feldspar, 19.1% of calcite, 11.2% of kaolin, 8.1% of aluminum oxide, 6.1% of barium carbonate, 10% of titanium dioxide, and 0.5% of iron oxide;

[0062] 2) The above raw materials are mixed and grinded with water (the water-glaze ratio is 1.45, and the glaze water is obtained by passing through a 250 mesh screen, with the weight percentage of the screen residue being 0.2%);

[0063] 3) The glaze water is applied to the surface of the body (the body is made of Longquan porcelain clay) in the form of spray glazing, and the thickness of the glaze layer is 1.2mm, with the glaze output being 80g / min during spraying;

[0064] 4) The glazed body is placed in an energy-saving and environmentally friendly electric kiln, and sintered by the oxidation atmosphere firing method, with the temperature rising rate being 2-3℃ / min, the temperature rising time being 9.5h, the kiln temperature rising to 1260℃, and the holding time being 30 minutes.

[0065] 5) After sintering, slowly cool to 450℃ for 12h, then gradually open the kiln door for cooling, and take out the kiln when the temperature is cooled to 120℃, finally obtaining an ivory white matte glaze porcelain with dense glaze layer structure, uniform color, and high-grade matte texture on the glaze surface, the ivory white matte glaze porcelain prepared in Example 1 is shown in Figure 1 .

[0066] Example 2

[0067] 1) The raw materials are weighed as follows: 45% of potassium feldspar, 19.1% of calcite, 11.2% of kaolin, 8.1% of aluminum oxide, 6.1% of barium carbonate, 10% of titanium dioxide, and 0.5% of iron oxide;

[0068] 2) The above raw materials are mixed, water is added for grinding (water-glaze specific gravity is 1.50), and the glaze water is obtained by passing through a 250 mesh screen (the weight percentage of the screen residue is 0.3%);

[0069] 3) The glaze water is applied to the surface of the body (the body is made of Jingdezhen porcelain clay) in a spraying glazing manner, the glaze layer thickness is 1.4 mm, and the glaze output is 90 g / min during spraying;

[0070] 4) The glazed body is placed into an energy-saving and environmentally friendly electric kiln, and sintered by using an oxidizing atmosphere firing method, the heating rate is 2-3 ℃ / min, the heating time is 10 h, the kiln temperature is raised to 1270 ℃, and the sintering is performed by keeping the temperature for 30 min.

[0071] 5) After sintering is completed, the slow cooling is performed for 14 h to 450 ℃, then the kiln door is gradually opened for temperature reduction, the body is taken out of the kiln at 160 ℃, and finally the ivory white matte glaze porcelain with a dense glaze layer structure, uniform color, and high-grade matte texture is obtained, and the ivory white matte glaze porcelain obtained in Example 2 is shown in Figure 2 .

[0072] Example 3

[0073] The raw materials are weighed according to the following percentages: potassium feldspar 45%, calcite 19.1%, kaolin 11.2%, aluminum oxide 8.1%, barium carbonate 6.1%, titanium dioxide 10%, and iron oxide 0.5%;

[0074] 2) The above raw materials are mixed, water is added for grinding (water-glaze specific gravity is 1.6), and the glaze water is obtained by passing through a 250 mesh screen (the weight percentage of the screen residue is 0.4%);

[0075] 3) The glaze water is applied to the surface of the body (the body is made of Yixing coarse clay) in a spraying glazing manner, the glaze layer thickness is 1.8 mm;

[0076] 4) The glazed body is placed into an energy-saving and environmentally friendly electric kiln, and sintered by using an oxidizing atmosphere firing method, the heating rate is 2-3 ℃ / min, the heating time is 10.5 h, the kiln temperature is raised to 1280 ℃, and the sintering is performed by keeping the temperature for 30 min.

[0077] 5) After sintering is completed, the slow cooling is performed for 16 h to 450 ℃, then the kiln door is gradually opened for temperature reduction, the body is taken out of the kiln at 180 ℃, and finally the ivory white matte glaze coarse porcelain with a dense glaze layer, uniform color, and high-grade texture is obtained, and the ivory white matte glaze coarse porcelain obtained in Example 3 is shown in Figure 3 .

[0078] Example 4

[0079] The raw materials are weighed as follows: potassium feldspar 44%, calcite 19.5%, kaolin 11.5%, aluminum oxide 8%, barium carbonate 6.3%, titanium dioxide 10.3%, iron oxide 0.4%;

[0080] 2) The above raw materials are mixed, and water is added for grinding (water-glaze specific gravity is 1.55), and the glaze water is obtained by passing through a 250-mesh sieve (the weight percentage of the sieve residue is 0.35%);

[0081] 3) The glaze water is applied to the surface of the body (the body is made of Yixing coarse pottery clay) in a spraying glazing manner, and the glaze layer thickness is 1.6 mm;

[0082] 4) The glazed body is placed into an energy-saving and environmentally friendly electric kiln, and sintering is performed by using an oxidizing atmosphere firing method, the temperature is raised at a rate of 2-3 ℃ / min, the temperature raising time is 9.5 h, the kiln temperature is raised to 1280 ℃, and the temperature is kept for 30 min.

[0083] 5) After sintering is completed, the temperature is slowly cooled to 450 ℃ for 12 h, then the kiln door is gradually opened for temperature reduction, the temperature is reduced to 200 ℃, and the body is taken out of the kiln, and finally, ivory white matte glaze coarse pottery with a dense glaze layer, uniform color, and high-grade texture is prepared, and the ivory white matte glaze ceramic coarse pottery prepared in Example 4 is shown in Figure 4 .

[0084] Example 5

[0085] 1) The raw materials are weighed as follows: potassium feldspar 46%, calcite 19%, kaolin 11%, aluminum oxide 8%, barium carbonate 6%, titanium dioxide 9.5%, iron oxide 0.5%;

[0086] 2) The above raw materials are mixed, and water is added for grinding (water-glaze specific gravity is 1.4), and the glaze water is obtained by passing through a 250-mesh sieve (the weight percentage of the sieve residue is 0.2);

[0087] 3) The glaze water is applied to the surface of the body (the body is made of 50% Yixing coarse pottery clay and 50% Longquan porcelain clay) in a spraying glazing manner, and the glaze layer thickness is 1.8 mm, and the glaze output is 100 g / min during spraying;

[0088] 4) The glazed body is placed into an energy-saving and environmentally friendly electric kiln, and sintering is performed by using an oxidizing atmosphere firing method, the temperature is raised at a rate of 2-3 ℃ / min, the temperature raising time is 10 h, the kiln temperature is raised to 1270 ℃, and the temperature is kept for 30 min.

[0089] 5) After sintering is completed, the temperature is slowly cooled to 450 ℃ for 14 h, then the kiln door is gradually opened for temperature reduction, the temperature is reduced to 180 ℃, and the body is taken out of the kiln, and finally, ivory white matte glaze stoneware with a dense glaze layer structure, uniform color, and high-grade glaze surface texture is prepared, and the ivory white matte glaze ceramic stoneware prepared in Example 5 is shown inFigure 5 .

[0090] The ordinary white glaze in the prior art has a smooth surface, good light reflection effect, high light reflection degree, high brightness, and a bright and light visual color experience, although the gloss is good, but it is not good-looking and has weak aesthetics, and is easy to scratch, lose gloss, fade, and the like, and has poor maintenance; the ivory white matte glaze prepared by the application has a low surface light reflection rate, light is emitted in all directions, light blur is not obvious, light feeling is soft, and it is not dazzling, giving a person a visual color experience of elegant and simple, restrained and soft, and having elegant temperament, and the performance is also very wear-resistant, and scratches are not easy to see.

[0091] The above is only a preferred specific embodiment of the application, but the protection scope of the application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the application, which should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. An ivory white matte glaze, characterized in that, The following ingredients are included by weight percentage: potassium feldspar 44.0-46.0%, calcite 19-19.5%, kaolin 11.0-11.5%, aluminum oxide 8.0-8.5%, barium carbonate 6.0-6.3%, titanium dioxide 9.5-10.5%, and iron oxide 0.4-0.6%; The preparation method of the ivory white matt glaze comprises the following steps: Step 1) ingredients are weighed according to the proportion, water is added for grinding, and sieving is performed to obtain glaze water; Step 2) the glaze water is applied to the surface of the body; Step 3) the glazed body is placed in a kiln for sintering, and then cooled out of the kiln; The water glaze in step 1) has a specific gravity of 1.40-1.60; The sieve in step 1) is a 250-mesh sieve, and the weight of the residue is 0.2-0.4%; The glazing method in step 2) is spraying; in the process of spraying, the glaze output per unit time is 80-100 g / min, and the thickness of the glaze layer is 1.2-1.8 mm; The specific process of sintering is: sintering at 1260-1280℃ under an oxidizing atmosphere, and the sintering time is 30 min; The heating rate is 2-3℃ / min, and the heating time is 9.5-11 h; The specific process of cooling is: cooling to 450℃ for 12-18 h, then gradually opening the kiln door for cooling, and cooling to 100-200℃ before taking out of the kiln.

2. The ivory white matte glaze of claim 1, wherein, The following ingredients are included by weight percentage: potassium feldspar 45%, calcite 19.1%, kaolin 11.2%, aluminum oxide 8.1%, barium carbonate 6.1%, titanium dioxide 10%, and iron oxide 0.5%.

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