Ceramic glaze and ceramic

Abstract

The present application provides a ceramic glaze and ceramics, the glaze comprising the following raw materials: kaolin, feldspar, modified silica, talc and modified titanium dioxide; the modified silica comprising the following raw materials: silicon dioxide, manganese chloride, dodecafluoroheptyl methacrylate, triisopropylsilyl acrylate; the modified titanium dioxide comprising the following raw materials: titanate, silicate, zirconate and yttrium nitrate. The present application obtains a high-strength ceramic glaze by rationally matching the raw materials.

Description

Technical Field

[0001] The present application relates to the field of ceramic technology, and in particular to a ceramic glaze and ceramics. Background Art

[0002] The raw materials used for ceramics are mostly natural inorganic non-metallic minerals. In order to give porcelain a beautiful appearance, a layer of ceramic glaze is usually applied to the porcelain. For ceramic products, ceramic glaze can improve the performance and play a decorative role. Glaze is a silicate. The glaze applied on ceramics is generally made of quartz, feldspar, and clay. After grinding and adding water, it is applied to the surface of the body and melted by roasting at a certain temperature. When the temperature drops, a glassy thin layer is formed on the surface of the ceramic. It increases the mechanical strength and thermal stability of the ceramic.

[0003] However, the existing ceramic glaze has low strength and is prone to cracking, which results in a short product life. Summary of the invention

[0004] The present application has been made in view of the above-mentioned problems, and an object of the present application is to provide a ceramic glaze having high strength.

[0005] Specifically, the present application provides a ceramic glaze, including the following preparation raw materials:

[0006] Kaolin, feldspar, modified silica, talc and modified titanium dioxide;

[0007] The modified silicon dioxide comprises the following preparation raw materials:

[0008] Silica, manganese chloride, dodecafluoroheptyl methacrylate, triisopropylsilyl acrylate;

[0009] The modified titanium dioxide comprises the following preparation raw materials:

[0010] Titanates, silicates, zirconates and yttrium nitrate.

[0011] According to one of the technical solutions of this application, at least the following beneficial effects are achieved:

[0012] The glaze in the present application includes modified silicon dioxide and modified titanium dioxide, wherein there are certain hydroxyl groups on the surface of silicon dioxide, and dodecafluoroheptyl methacrylate and triisopropylsilyl acrylate can undergo cross-linking reaction to form fluorosilane polymers, and the fluorosilane polymers coat silicon dioxide and manganese ions to form modified silicon dioxide;

[0013] Titanate, silicate, zirconate and yttrium nitrate can be converted into metal oxides under certain conditions. Using the above raw materials for preparation is conducive to fully mixing the above substances; at the same time, the particle size of the metal oxide prepared using the above raw materials is smaller, which is conducive to dispersion in the glaze.

[0014] Feldspar, kaolin and talc are used as the basic materials for making ceramic glazes to ensure that the glazes have basic corrosion resistance and durability. The strength of the ceramic glaze is greatly improved by doping modified silica with fluorine and manganese. Modified titanium dioxide introduces zirconium element, and the zirconium element and alumina in the base material form an alumina-zirconium oxide system, which greatly improves the strength of the ceramic glaze, thereby producing a high-strength ceramic glaze.

[0015] According to some embodiments of the present application, the ceramic glaze includes the following preparation raw materials in parts by weight:

[0016] 100 parts of kaolin, 200 to 300 parts of feldspar, 60 to 80 parts of modified silicon dioxide, 5 to 15 parts of talc and 20 to 100 parts of modified titanium dioxide.

[0017] According to some embodiments of the present application, the modified silicon dioxide includes the following preparation raw materials in parts by weight:

[0018] 100 parts of silicon dioxide, 1 to 2 parts of manganese chloride, 10 to 20 parts of dodecafluoroheptyl methacrylate and 20 to 30 parts of triisopropylsilyl acrylate.

[0019] According to some embodiments of the present application, the modified titanium dioxide includes the following preparation raw materials in parts by weight:

[0020] 10 parts of titanate, 20 to 30 parts of silicate, 10 to 20 parts of zirconate and 3 to 5 parts of yttrium nitrate.

[0021] According to some embodiments of the present application, the raw materials for preparing the modified silica also include an initiator.

[0022] According to some embodiments of the present application, the initiator is BPO.

[0023] According to some embodiments of the present application, the raw materials for preparing the modified silicon dioxide also include a solvent.

[0024] According to some embodiments of the present application, the solvent includes ethanol.

[0025] According to some embodiments of the present application, the particle size of the silicon dioxide is 1 nm to 1000 nm.

[0026] According to some embodiments of the present application, the titanate is tetrabutyl titanate.

[0027] According to some embodiments of the present application, the silicate includes butyl orthosilicate.

[0028] According to some embodiments of the present application, the zirconate includes tetra-n-propyl zirconate.

[0029] According to some embodiments of the present application, the method for preparing the modified silicon dioxide comprises the following steps:

[0030] Silica, manganese chloride, dodecafluoroheptyl methacrylate, triisopropylsilyl acrylate, an initiator and a solvent are mixed and reacted.

[0031] According to some embodiments of the present application, the reaction temperature is 50°C to 70°C;

[0032] According to some embodiments of the present application, the reaction time is 3h~5h.

[0033] According to some embodiments of the present application, the method for preparing the modified titanium dioxide comprises the following steps:

[0034] titanate, silicate, zirconate, yttrium nitrate, alkali and ethanol are mixed and reacted to obtain a first mixture;

[0035] The first mixture is calcined.

[0036] According to some embodiments of the present application, the reaction temperature is 40°C to 60°C.

[0037] According to some embodiments of the present application, the base includes aqueous ammonia.

[0038] According to some embodiments of the present application, the reaction time is 10 min to 60 min.

[0039] According to some embodiments of the present application, the calcination temperature is 300°C to 600°C.

[0040] According to some embodiments of the present application, the calcination includes a primary heat preservation and a secondary heat preservation.

[0041] According to some embodiments of the present application, the temperature of the primary insulation is 300°C to 400°C.

[0042] According to some embodiments of the present application, the insulation time is 10 min to 60 min.

[0043] According to some embodiments of the present application, the temperature of the secondary insulation is 500°C~600°C.

[0044] According to some embodiments of the present application, the secondary insulation time is 10 min to 60 min.

[0045] According to some embodiments of the present application, the method for preparing the ceramic glaze comprises the following steps:

[0046] Mixing the raw materials and then firing them;

[0047] The firing temperature is 900°C to 1300°C.

[0048] A second aspect of the present application provides a ceramic, comprising the ceramic glaze as described in the first aspect of the present application. DETAILED DESCRIPTION

[0049] The following description will be described in detail as appropriate for the embodiments specifically disclosed in the present application. However, there may be cases where unnecessary detailed descriptions are omitted. For example, there may be cases where detailed descriptions of well-known matters and repeated descriptions of actually identical structures are omitted. This is to avoid the following description from becoming unnecessarily lengthy and to facilitate the understanding of those skilled in the art. In addition, the following description is provided for those skilled in the art to fully understand the present application and is not intended to limit the subject matter described in the claims.

[0050] "Scope" disclosed in the present application is limited in the form of lower limit and upper limit, and a given range is limited by selecting a lower limit and an upper limit, and the selected lower limit and upper limit define the boundary of a special range. The scope limited in this way can be including end values ​​or not including end values, and can be arbitrarily combined, that is, any lower limit can be combined with any upper limit to form a scope. For example, if the scope of 60-120 and 80-110 is listed for a specific parameter, it is understood that the scope of 60-110 and 80-120 is also expected. In addition, if the minimum range values ​​1 and 2 are listed, and if the maximum range values ​​3, 4 and 5 are listed, the following scope can be all expected: 1-3, 1-4, 1-5, 2-3, 2-4 and 2-5. In the present application, unless otherwise specified, the numerical range "ab" represents the abbreviation of any real number combination between a and b, wherein a and b are real numbers. For example, the numerical range "0-5" means that all real numbers between "0-5" are listed in this document, and "0-5" is just an abbreviation of these numerical combinations. In addition, when a parameter is expressed as an integer ≥ 2, it is equivalent to disclosing that the parameter is, for example, an integer of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, etc.

[0051] Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution.

[0052] Unless otherwise specified, all technical features and optional technical features of this application can be combined with each other to form a new technical solution.

[0053] If there is no special explanation, all steps of the present application can be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), which means that the method may include steps (a) and (b) performed sequentially, or may include steps (b) and (a) performed sequentially. For example, the method may further include step (c), which means that step (c) may be added to the method in any order. For example, the method may include steps (a), (b) and (c), or may include steps (a), (c) and (b), or may include steps (c), (a) and (b), etc.

[0054] If there is no special explanation, the "include" and "comprising" mentioned in this application are open-ended or closed-ended. For example, the "include" and "comprising" may mean that other components not listed may also be included or only the listed components may be included or only the listed components may be included.

[0055] If not specifically stated, in this application, the term "or" is inclusive. For example, the phrase "A or B" means "A, B, or both A and B". More specifically, any of the following conditions satisfies the condition "A or B": A is true (or exists) and B is false (or does not exist); A is false (or does not exist) and B is true (or exists); or both A and B are true (or exist).

[0056] In the embodiment of the present application, the blank is composed of the following raw materials in parts by weight: 35 parts of sillimanite, 15 parts of zirconium oxide, 2 parts of granite fiber, 30 parts of kaolin, 22 parts of zircon sand, 6 parts of aluminum oxide, and 5 parts of yttrium oxide. Example 1

[0057] This embodiment is a ceramic glaze, comprising the following raw materials in parts by weight:

[0058] Kaolin (325 mesh) 100 parts, feldspar (potash feldspar, 325 mesh) 260 parts, modified silicon dioxide 70 parts, talc (325 mesh) 12 parts and modified titanium dioxide 80 parts.

[0059] The modified silicon dioxide in this embodiment includes the following raw materials in parts by weight:

[0060] 100 parts of silicon dioxide, 1.8 parts of manganese chloride, 15 parts of dodecafluoroheptyl methacrylate, 28 parts of triisopropylsilyl acrylate, 1 part of initiator (BPO) and 50 parts of solvent (ethanol).

[0061] The modified titanium dioxide in this embodiment includes the following raw materials in parts by weight:

[0062] 10 parts of titanate (tetrabutyl titanate), 28 parts of silicate (butyl orthosilicate), 15 parts of zirconate (tetra-n-propyl zirconate) and 4 parts of yttrium nitrate.

[0063] The preparation method of modified silicon dioxide in this embodiment consists of the following steps:

[0064] Silica (D50 is 50 nm), manganese chloride, dodecafluoroheptyl methacrylate, triisopropylsilyl acrylate, an initiator and a solvent are mixed and reacted (reaction temperature is 60°C, time is 4 hours), after the reaction is completed, the solid and liquid are separated, and the solid phase is collected and dried.

[0065] The preparation method of modified titanium dioxide in this embodiment consists of the following steps:

[0066] Titanate, silicate, zirconate, yttrium nitrate, alkali (ammonia water, mass fraction is 25%, volume ratio of ammonia water to titanate is 1:10) and ethanol (volume mass ratio of ethanol to titanate is 10 mL:1 g) are mixed and reacted (reaction temperature is 50° C., reaction time is 30 min) to obtain a first mixture;

[0067] calcining the first mixture, and cooling after the calcination is completed;

[0068] Calcination consists of the following steps: primary heating, primary insulation, secondary heating and secondary insulation:

[0069] The temperature was raised from 25°C to 350°C at a rate of 5°C / min.

[0070] The temperature of the first heat preservation is 350℃ and the time is 30min;

[0071] The temperature was raised to 550°C for the second time, with a heating rate of 5°C / min;

[0072] The secondary insulation temperature is 550℃ and the time is 30min.

[0073] In this embodiment, the ceramic is composed of a body and a ceramic glaze.

[0074] The method for preparing ceramics in this embodiment comprises the following steps:

[0075] The raw materials of the green body and water (the mass ratio of the raw materials to water is 7:3) are mixed and ball-milled to obtain green body slurry;

[0076] The green body slurry is then made into a green body by slip casting, dried, put into a kiln, and bisque fired at 920°C for 5h to obtain a green body;

[0077] Mix kaolin, feldspar, modified silicon dioxide, talc, modified titanium dioxide and water and then ball-mill (the mass ratio of kaolin to water is 1:1) to form a glaze slurry;

[0078] The glaze slurry is sprayed on the surface of the blank to form a glaze slurry (the glaze thickness is 0.2mm); it is dried and fired;

[0079] The firing process is as follows:

[0080] The first stage: from 25℃ to 500℃, the heating time is 1h;

[0081] The second stage: heating from 500℃ to 950℃, the heating time is 1.5h, and keeping at 950℃ for 2h;

[0082] The third stage: heating from 950℃ to 1250℃, the heating time is 2h, and keeping at 1250℃ for 4h;

[0083] The fourth stage: cooling to 45°C in the furnace. Example 2

[0084] This embodiment is a ceramic glaze, comprising the following raw materials in parts by weight:

[0085] 100 parts of kaolin (325 mesh), 200 parts of feldspar (potash feldspar, 325 mesh), 80 parts of modified silicon dioxide, 5 parts of talc (325 mesh) and 100 parts of modified titanium dioxide.

[0086] The modified silicon dioxide in this embodiment includes the following raw materials in parts by weight:

[0087] 100 parts of silicon dioxide, 1 part of manganese chloride, 10 parts of dodecafluoroheptyl methacrylate, 30 parts of triisopropylsilyl acrylate, 1 part of initiator (BPO) and 50 parts of solvent (ethanol).

[0088] The modified titanium dioxide in this embodiment includes the following raw materials in parts by weight:

[0089] 10 parts of titanate (tetrabutyl titanate), 30 parts of silicate (butyl orthosilicate), 20 parts of zirconate (tetra-n-propyl zirconate) and 5 parts of yttrium nitrate.

[0090] The preparation methods of modified silicon dioxide, modified titanium dioxide and ceramics in this example are carried out with reference to Example 1. Example 3

[0091] This embodiment is a ceramic glaze, comprising the following raw materials in parts by weight:

[0092] 100 parts of kaolin (325 mesh), 300 parts of feldspar (potash feldspar, 325 mesh), 60 parts of modified silicon dioxide, 15 parts of talc (325 mesh) and 50 parts of modified titanium dioxide.

[0093] The modified silicon dioxide in this embodiment includes the following raw materials in parts by weight:

[0094] 100 parts of silicon dioxide, 2 parts of manganese chloride, 20 parts of dodecafluoroheptyl methacrylate, 20 parts of triisopropylsilyl acrylate, 1 part of initiator (BPO) and 50 parts of solvent (ethanol).

[0095] The modified titanium dioxide in this embodiment includes the following raw materials in parts by weight:

[0096] 10 parts of titanate (tetrabutyl titanate), 20 parts of silicate (butyl orthosilicate), 20 parts of zirconate (tetra-n-propyl zirconate) and 3 parts of yttrium nitrate.

[0097] The preparation methods of modified silicon dioxide, modified titanium dioxide and ceramics in this example are carried out with reference to Example 1. Example 4

[0098] This embodiment is a ceramic glaze, comprising the following raw materials in parts by weight:

[0099] Kaolin (325 mesh) 100 parts, feldspar (potash feldspar, 325 mesh) 220 parts, modified silicon dioxide 65 parts, talc (325 mesh) 8 parts and modified titanium dioxide 40 parts.

[0100] The modified silicon dioxide in this embodiment includes the following raw materials in parts by weight:

[0101] 100 parts of silicon dioxide, 1.5 parts of manganese chloride, 12 parts of dodecafluoroheptyl methacrylate, 28 parts of triisopropylsilyl acrylate, 1 part of initiator (BPO) and 50 parts of solvent (ethanol).

[0102] The modified titanium dioxide in this embodiment includes the following raw materials in parts by weight:

[0103] 10 parts of titanate (tetrabutyl titanate), 27 parts of silicate (butyl orthosilicate), 13 parts of zirconate (tetra-n-propyl zirconate) and 4 parts of yttrium nitrate.

[0104] The preparation methods of modified silicon dioxide, modified titanium dioxide and ceramics in this example are carried out with reference to Example 1. Example 5

[0105] This embodiment is a ceramic glaze, comprising the following raw materials in parts by weight:

[0106] Kaolin (325 mesh) 100 parts, feldspar (potassium feldspar, 325 mesh) 200 parts, modified silicon dioxide 60 parts, talc (325 mesh) 5 parts and modified titanium dioxide 20 parts.

[0107] The modified silicon dioxide in this embodiment includes the following raw materials in parts by weight:

[0108] 100 parts of silicon dioxide, 1 part of manganese chloride, 10 parts of dodecafluoroheptyl methacrylate, 20 parts of triisopropylsilyl acrylate, 1 part of initiator (BPO) and 50 parts of solvent (ethanol).

[0109] The modified titanium dioxide in this embodiment includes the following raw materials in parts by weight:

[0110] 10 parts of titanate (tetrabutyl titanate), 20 parts of silicate (butyl orthosilicate), 10 parts of zirconate (tetra-n-propyl zirconate) and 3 parts of yttrium nitrate.

[0111] The preparation methods of modified silicon dioxide, modified titanium dioxide and ceramics in this example are carried out with reference to Example 1.

[0112] Comparative Example 1

[0113] This comparative example is a ceramic glaze, comprising the following raw materials in parts by weight:

[0114] Kaolin (325 mesh) 100 parts, feldspar (potassium feldspar, 325 mesh) 200 parts, modified silicon dioxide 60 parts, talc (325 mesh) 5 parts and modified titanium dioxide 20 parts.

[0115] The modified silicon dioxide in this comparative example includes the following preparation raw materials in parts by weight:

[0116] 100 parts of silicon dioxide, 1 part of manganese chloride, 10 parts of dodecafluoroheptyl methacrylate, 20 parts of triisopropylsilyl acrylate, 1 part of initiator (BPO) and 50 parts of solvent (ethanol).

[0117] The modified titanium dioxide in this comparative example includes the following preparation raw materials in parts by weight:

[0118] 10 parts of titanate (tetrabutyl titanate), 20 parts of silicate (butyl orthosilicate) and 3 parts of yttrium nitrate.

[0119] The preparation method of modified titanium dioxide in this comparative example consists of the following steps:

[0120] Titanate, silicate, yttrium nitrate, alkali (ammonia water, mass fraction of 25%, volume ratio of ammonia water to titanate of 1:10) and ethanol (volume mass ratio of ethanol to titanate of 10 mL:1 g) are mixed and reacted (reaction temperature of 50° C., reaction time of 30 min) to obtain a first mixture;

[0121] calcining the first mixture, and cooling after the calcination is completed;

[0122] Calcination consists of the following steps: primary heating, primary insulation, secondary heating and secondary insulation:

[0123] The temperature was raised from 25°C to 350°C at a rate of 5°C / min.

[0124] The temperature of the first heat preservation is 350℃ and the time is 30min;

[0125] The temperature was raised to 550°C for the second time, with a heating rate of 5°C / min;

[0126] The secondary insulation temperature is 550℃ and the time is 30min.

[0127] The preparation method of modified silicon dioxide and ceramics in this comparative example is carried out with reference to Example 1.

[0128] Comparative Example 2

[0129] This comparative example is a ceramic glaze, comprising the following raw materials in parts by weight:

[0130] Kaolin (325 mesh) 100 parts, feldspar (potassium feldspar, 325 mesh) 200 parts, modified silicon dioxide 60 parts, talc (325 mesh) 5 parts and modified titanium dioxide 20 parts.

[0131] The modified silicon dioxide in this comparative example includes the following preparation raw materials in parts by weight:

[0132] 100 parts of silicon dioxide, 1 part of manganese chloride, 10 parts of dodecafluoroheptyl methacrylate, 20 parts of triisopropylsilyl acrylate, 1 part of initiator (BPO) and 50 parts of solvent (ethanol).

[0133] The modified titanium dioxide in this comparative example includes the following preparation raw materials in parts by weight:

[0134] Titanate (tetrabutyl titanate) 10 parts and silicate (butyl orthosilicate) 20 parts.

[0135] Titanate, silicate, alkali (ammonia water, mass fraction of 25%, volume ratio of ammonia water to titanate of 1:10) and ethanol (volume mass ratio of ethanol to titanate of 10 mL:1 g) are mixed and reacted (reaction temperature of 50° C., reaction time of 30 min) to obtain a first mixture;

[0136] calcining the first mixture, and cooling after the calcination is completed;

[0137] Calcination consists of the following steps: primary heating, primary insulation, secondary heating and secondary insulation:

[0138] The temperature was raised from 25°C to 350°C at a rate of 5°C / min.

[0139] The temperature of the first heat preservation is 350℃ and the time is 30min;

[0140] The temperature was raised to 550°C for the second time, with a heating rate of 5°C / min;

[0141] The secondary insulation temperature is 550℃ and the time is 30min.

[0142] The preparation method of modified silicon dioxide and ceramics in this comparative example is carried out with reference to Example 1.

[0143] Comparative Example 3

[0144] This comparative example is a ceramic glaze, comprising the following raw materials in parts by weight:

[0145] Kaolin (325 mesh) 100 parts, feldspar (potassium feldspar, 325 mesh) 200 parts, modified silicon dioxide 60 parts, talc (325 mesh) 5 parts and modified titanium dioxide 20 parts.

[0146] The modified silicon dioxide in this comparative example includes the following preparation raw materials in parts by weight:

[0147] 100 parts of silicon dioxide, 1 part of manganese chloride, 20 parts of triisopropylsilyl acrylate, 1 part of initiator (BPO) and 50 parts of solvent (ethanol).

[0148] The modified titanium dioxide in this comparative example includes the following preparation raw materials in parts by weight:

[0149] 10 parts of titanate (tetrabutyl titanate), 20 parts of silicate (butyl orthosilicate), 10 parts of zirconate (tetra-n-propyl zirconate) and 3 parts of yttrium nitrate.

[0150] The preparation method of modified silicon dioxide in this comparative example consists of the following steps:

[0151] Silica (D50 is 50 nm), manganese chloride, triisopropylsilyl acrylate, an initiator and a solvent are mixed and reacted (reaction temperature is 60°C, time is 4 hours). After the reaction is completed, the solid and liquid are separated, and the solid phase is collected and dried.

[0152] The preparation method of modified titanium dioxide and ceramics in this comparative example is carried out with reference to Example 1.

[0153] Comparative Example 4

[0154] This comparative example is a ceramic glaze, comprising the following raw materials in parts by weight:

[0155] Kaolin (325 mesh) 100 parts, feldspar (potassium feldspar, 325 mesh) 200 parts, modified silicon dioxide 60 parts, talc (325 mesh) 5 parts and modified titanium dioxide 20 parts.

[0156] The modified silicon dioxide in this comparative example includes the following preparation raw materials in parts by weight:

[0157] 100 parts of silica, 1 part of manganese chloride, 10 parts of dodecafluoroheptyl methacrylate, 1 part of initiator (BPO) and 50 parts of solvent (ethanol).

[0158] The modified titanium dioxide in this comparative example includes the following preparation raw materials in parts by weight:

[0159] 10 parts of titanate (tetrabutyl titanate), 20 parts of silicate (butyl orthosilicate), 10 parts of zirconate (tetra-n-propyl zirconate) and 3 parts of yttrium nitrate.

[0160] The preparation method of modified silicon dioxide in this comparative example consists of the following steps:

[0161] Silica (D50 is 50 nm), manganese chloride, dodecafluoroheptyl methacrylate, an initiator and a solvent are mixed and reacted (reaction temperature is 60°C, time is 4 hours), after the reaction is completed, the solid and liquid are separated, and the solid phase is collected and dried.

[0162] The preparation method of modified titanium dioxide and ceramics in this comparative example is carried out with reference to Example 1.

[0163] Comparative Example 5

[0164] This comparative example is a ceramic glaze, comprising the following raw materials in parts by weight:

[0165] 100 parts of kaolin (325 mesh), 200 parts of feldspar (potash feldspar, 325 mesh), 60 parts of silicon dioxide (D50 is 50 nm), 5 parts of talc (325 mesh) and 20 parts of titanium dioxide.

[0166] The preparation method of titanium dioxide in this comparative example consists of the following steps:

[0167] Titanate, alkali (ammonia water, mass fraction of 25%, volume ratio of ammonia water to titanate of 1:10) and ethanol (volume mass ratio of ethanol to titanate of 10 mL:1 g) are mixed and reacted (reaction temperature of 50° C., reaction time of 30 min) to obtain a first mixture;

[0168] calcining the first mixture, and cooling after the calcination is completed;

[0169] Calcination consists of the following steps: primary heating, primary insulation, secondary heating and secondary insulation:

[0170] The temperature was raised from 25°C to 350°C at a rate of 5°C / min.

[0171] The temperature of the first heat preservation is 350℃ and the time is 30min;

[0172] The temperature was raised to 550°C for the second time, with a heating rate of 5°C / min;

[0173] The secondary insulation temperature is 550℃ and the time is 30min.

[0174] The method for preparing ceramics in this embodiment comprises the following steps:

[0175] The raw materials of the green body and water (the mass ratio of the raw materials to water is 7:3) are mixed and ball-milled to obtain green body slurry;

[0176] The green body slurry is then made into a green body by slip casting, dried, put into a kiln, and bisque fired at 920°C for 5h to obtain a green body;

[0177] Mix kaolin, feldspar, silicon dioxide, talc, titanium dioxide and water and then ball-mill (the mass ratio of kaolin to water is 1:1) to form a glaze slurry;

[0178] The glaze slurry is sprayed on the surface of the blank to form a glaze slurry (the glaze thickness is 0.2mm); it is dried and fired;

[0179] The firing process is as follows:

[0180] The first stage: from 25℃ to 500℃, the heating time is 1h;

[0181] The second stage: heating from 500℃ to 950℃, the heating time is 1.5h, and keeping at 950℃ for 2h;

[0182] The third stage: heating from 950℃ to 1250℃, the heating time is 2h, and keeping at 1250℃ for 4h;

[0183] The fourth stage: cooling to 45°C in the furnace.

[0184] The flexural strength of the examples and comparative examples of the present application is shown in Table 1.

[0185] Table 1

[0186]

[0187] It should be noted that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are only examples, and the embodiments having the same structure as the technical idea and exerting the same effect within the scope of the technical solution of the present application are all included in the technical scope of the present application. In addition, without departing from the scope of the main purpose of the present application, various modifications that can be thought of by those skilled in the art to the embodiments and other methods of combining some of the constituent elements in the embodiments are also included in the scope of the present application.

Claims

1. A ceramic glaze, characterized in that: The preparation comprises the following raw materials in parts by weight: 100 parts of kaolin, 200-300 parts of feldspar, 60-80 parts of modified silicon dioxide, 5-15 parts of talc and 20-100 parts of modified titanium dioxide; The modified silicon dioxide comprises the following preparation raw materials in parts by weight: 100 parts of silicon dioxide, 1 to 2 parts of manganese chloride, 10 to 20 parts of dodecafluoroheptyl methacrylate and 20 to 30 parts of triisopropylsilyl acrylate; The modified titanium dioxide comprises the following preparation raw materials in parts by weight: 10 parts of titanate, 20 to 30 parts of silicate, 10 to 20 parts of zirconate and 3 to 5 parts of yttrium nitrate; The raw materials for preparing the modified silicon dioxide also include an initiator and a solvent; The initiator is BPO; the solvent includes ethanol; The preparation method of the modified silicon dioxide comprises the following steps: Mix silica, manganese chloride, dodecafluoroheptyl methacrylate, triisopropylsilyl acrylate, initiator and solvent and react at 50°C to 70°C for 3h to 5h; The preparation method of the modified titanium dioxide comprises the following steps: titanate, silicate, zirconate, yttrium nitrate, ammonia water and ethanol are mixed and reacted at 40°C to 60°C for 10min to 60min to obtain a first mixture; The first mixture is calcined at 300°C to 600°C.

2. The ceramic glaze according to claim 1, characterized in that: The particle size of the silicon dioxide is 1 nm to 1000 nm.

3. The ceramic glaze according to claim 1, characterized in that: The titanate is tetrabutyl titanate.

4. The ceramic glaze according to claim 1, characterized in that: The silicate includes butyl orthosilicate.

5. The ceramic glaze according to claim 1, characterized in that: The zirconate includes tetra-n-propyl zirconate.

6. The ceramic glaze according to claim 1, characterized in that: The calcination includes a primary heat preservation and a secondary heat preservation.

7. The ceramic glaze according to claim 6, characterized in that: The temperature of the first insulation is 300°C to 400°C; The time of the first insulation is 10min to 60min.

8. The ceramic glaze according to claim 6, characterized in that: The temperature of the secondary insulation is 500°C to 600°C; The secondary insulation time is 10min to 60min.

9. The ceramic glaze according to any one of claims 1 to 8, characterized in that: The method for preparing the ceramic glaze comprises the following steps: Mixing the raw materials and then firing them; The firing temperature is 900°C to 1300°C.

10. A ceramic, characterized in that: The invention comprises the ceramic glaze according to any one of claims 1 to 9.

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