Anti-cracking ceramic glaze water and preparation method

Abstract

The application discloses a kind of anti-cracking ceramic glaze water, including sodium feldspar, potassium feldspar, modified kaolin, dolomite, zinc white, barium carbonate, quartz, clinker;The ethylene-1-octene copolymer of the application has good flexibility, tensile property and tear strength, the viscosity strength is higher, the ethylene-1-octene copolymer and polyethylene cooperate, further enhance the binding force between raw materials, in turn help to enhance impact resistance and anti-fracture tensile property, while under the action of itaconic acid, itaconic acid as graft monomer, with ethylene-1-octene copolymer is reacted, to introduce itaconic acid group on ethylene-1-octene copolymer molecular chain, this grafting reaction can enhance its bonding property, so that the setting of modified kaolin can improve the anti-cracking strength of ceramic glaze water.

Description

Technical Field

[0001] The present invention relates to the technical field of ceramic glazes, and in particular to an anti-cracking ceramic glaze and a preparation method thereof. Background Art

[0002] Glaze is a slurry made by grinding a mixture of multiple raw materials with water in a certain proportion. After being applied to the porcelain blank and fired, it can increase the mechanical strength, thermal stability and dielectric strength of the porcelain. It can also beautify the porcelain and make it easier to wipe. However, the ceramic glaze commonly used in the existing technology and made from ordinary raw materials has poor anti-cracking effect and cannot meet the usage requirements in some scenarios. For this reason, we propose an anti-cracking ceramic glaze and a preparation method thereof. Summary of the Invention

[0003] In view of the defects of the prior art, the purpose of the present invention is to provide a crack-resistant ceramic glaze and a preparation method to solve the problem raised in the above background technology that the ceramic glaze made from ordinary raw materials in the prior art has poor anti-cracking effect and cannot meet the usage requirements in some scenarios.

[0004] The present invention solves the technical problem by adopting the following technical solutions:

[0005] The present invention provides an anti-cracking ceramic glaze, comprising sodium feldspar, potassium feldspar, modified kaolin, dolomite, zinc white, barium carbonate, quartz, and frit;

[0006] The specific formula includes the following raw materials (calculated by mass): 16-19 parts of sodium feldspar, 16-20 parts of potassium feldspar, 15-25 parts of modified kaolin, 5-11 parts of dolomite, 3-7 parts of zinc white, 2-5 parts of barium carbonate, 3-7 parts of quartz, and 6-10 parts of frit.

[0007] Preferably, the modified kaolin comprises the following ingredients: kaolin, ethylene-1-octene copolymer, polyethylene, itaconic acid and solvent.

[0008] Preferably, the modified kaolin comprises the following components in percentage by mass: 30-40% kaolin, 12-15% ethylene-1-octene copolymer, 11-13% polyethylene, 3-5% itaconic acid, and the balance ethanol solution.

[0009] Preferably, the preparation method of the modified kaolin comprises the following steps:

[0010] Step 1: Grind the kaolin into 1100-1200 mesh and put it into a ball mill for stirring and heating;

[0011] Step 2: Add itaconic acid solution to the kaolin heated in step 1, stir for 3-5 hours, and then wash with ethanol solution to obtain acidified kaolin;

[0012] Step 3: Add ethylene-1-octene copolymer and polyethylene to the acidified kaolin, and wet-mill in an ethanol solution as a solvent for 6-8 hours to obtain a mixture;

[0013] Step 4: Place the mixture at a temperature of 110-120° C., dry it for 7-9 hours, and then calcine it to obtain modified kaolin.

[0014] Preferably, in step 1, the heating temperature is 50-60° C., the heating time is 10-20 min, and the speed of the ball machine is 1300-1500 rpm.

[0015] Preferably, after the mixture in step 4 is dried, it is calcined at a temperature of 600-700° C. for 2-3 hours to obtain modified kaolin.

[0016] The present invention also provides a method for preparing anti-cracking ceramic glaze, comprising the following steps:

[0017] S1. Weigh albite, dolomite, potassium feldspar, zinc white, and frit according to the proportions, feed the raw materials into a ball mill, and then impact and grind them. The ground materials are mixture A.

[0018] S2. Weigh modified kaolin, barium carbonate, and quartz according to the ratio, add the above raw materials and mixture A into a mixer and mix until they are uniformly mixed to obtain a uniformly mixed mixture B;

[0019] S3, transferring the uniformly mixed mixture B to a pool furnace for calcination to obtain a mixture C;

[0020] S4, crushing the mixture C, rinsing it after crushing, drying it after rinsing, grinding it in a ball mill after drying to obtain a mixture D, and mixing the mixture D with water to prepare a glaze;

[0021] S5. Test the pH value of the glaze and make appropriate adjustments. Then let the glaze stand for a while and set it aside.

[0022] Preferably, in step S2, the mixing time is 40-50 min and the rotation speed is 40-60 r / min.

[0023] Preferably, the temperature of the pool furnace in step S3 is 1450-1500° C., and the sintering time is 9-11 hours.

[0024] Preferably, in step S4, after drying, the powder is ground into 170-190 mesh.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The ethylene-1-octene copolymer of the present invention has good flexibility, tensile strength and tear strength, and high viscosity strength. The ethylene-1-octene copolymer and polyethylene are combined to further enhance the bonding force between the raw materials, thereby contributing to enhanced impact resistance and tensile strength at break. At the same time, under the action of itaconic acid, itaconic acid acts as a grafting monomer and reacts with the ethylene-1-octene copolymer, thereby introducing itaconic acid groups into the molecular chain of the ethylene-1-octene copolymer. This grafting reaction can enhance its bonding performance, thereby improving the anti-cracking strength of ceramic glaze through the setting of modified kaolin. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] The present invention of this embodiment provides a crack-proof ceramic glaze, comprising albite, potassium feldspar, modified kaolin, dolomite, zinc white, barium carbonate, quartz, and frit;

[0029] The specific formula includes the following raw materials (calculated by mass): 16-19 parts of sodium feldspar, 16-20 parts of potassium feldspar, 15-25 parts of modified kaolin, 5-11 parts of dolomite, 3-7 parts of zinc white, 2-5 parts of barium carbonate, 3-7 parts of quartz, and 6-10 parts of frit.

[0030] The modified kaolin of this embodiment includes the following components: kaolin, ethylene-1-octene copolymer, polyethylene, itaconic acid and solvent.

[0031] The modified kaolin of this embodiment includes the following components in percentage by weight: 30-40% kaolin, 12-15% ethylene-1-octene copolymer, 11-13% polyethylene, 3-5% itaconic acid, and the balance ethanol solution.

[0032] The preparation method of the modified kaolin of this embodiment comprises the following steps:

[0033] Step 1: Grind the kaolin into 1100-1200 mesh and put it into a ball mill for stirring and heating;

[0034] Step 2: Add itaconic acid solution to the kaolin heated in step 1, stir for 3-5 hours, and then wash with ethanol solution to obtain acidified kaolin;

[0035] Step 3: Add ethylene-1-octene copolymer and polyethylene to the acidified kaolin, and wet-mill in an ethanol solution as a solvent for 6-8 hours to obtain a mixture;

[0036] Step 4: Place the mixture at a temperature of 110-120° C., dry it for 7-9 hours, and then calcine it to obtain modified kaolin.

[0037] In step 1 of this embodiment, the heating temperature is 50-60° C., the heating time is 10-20 min, and the speed of the ball machine is 1300-1500 rpm.

[0038] In step 4 of this embodiment, after the mixture is dried, it is calcined at a temperature of 600-700° C. for 2-3 hours to obtain modified kaolin.

[0039] A method for preparing a crack-resistant ceramic glaze according to this embodiment includes the following steps:

[0040] S1. Weigh albite, dolomite, potassium feldspar, zinc white, and frit according to the proportions, feed the raw materials into a ball mill, and then impact and grind them. The ground materials are mixture A.

[0041] S2. Weigh modified kaolin, barium carbonate, and quartz according to the ratio, add the above raw materials and mixture A into a mixer and mix until they are uniformly mixed to obtain a uniformly mixed mixture B;

[0042] S3, transferring the uniformly mixed mixture B to a pool furnace for calcination to obtain a mixture C;

[0043] S4, crushing the mixture C, rinsing it after crushing, drying it after rinsing, grinding it in a ball mill after drying to obtain a mixture D, and mixing the mixture D with water to prepare a glaze;

[0044] S5. Test the pH value of the glaze and make appropriate adjustments. Then let the glaze stand for a while and set it aside.

[0045] In step S2 of this embodiment, the mixing time is 40-50 min and the rotation speed is 40-60 r / min.

[0046] The temperature of the pool furnace in this embodiment is 1450-1500°C, and the sintering time is 9-11 hours.

[0047] In step S4 of this embodiment, after drying, the product is ground into 170-190 mesh. Example 1

[0048] The present invention of this embodiment provides a crack-proof ceramic glaze, comprising albite, potassium feldspar, modified kaolin, dolomite, zinc white, barium carbonate, quartz, and frit;

[0049] The specific formula comprises the following raw materials (in mass fraction): 16 parts of sodium feldspar, 20 parts of potassium feldspar, 15 parts of modified kaolin, 11 parts of dolomite, 3 parts of zinc white, 5 parts of barium carbonate, 3 parts of quartz and 10 parts of frit.

[0050] The modified kaolin of the embodiment comprises the following components: kaolin, ethylene-1-octene copolymer, polyethylene, itaconic acid and solvent.

[0051] The modified kaolin of the embodiment comprises the following components with mass percentage: 40% of kaolin, 15% of ethylene-1-octene copolymer, 11% of polyethylene, 5% of itaconic acid and the rest of ethanol solution.

[0052] The preparation method of the modified kaolin of the embodiment comprises the following steps:

[0053] Step one: after the kaolin is crushed to 1100 mesh, it is loaded into a ball mill for stirring and heating;

[0054] Step two: after the kaolin of step one is heated, itaconic acid solution is added into the kaolin, and after stirring for 3 hours, the acidified kaolin is obtained by washing with ethanol solution;

[0055] Step three: ethylene-1-octene copolymer and polyethylene are added into the acidified kaolin, and the mixture is obtained by wet ball milling in the ball mill with ethanol solution as the solvent for 6 hours;

[0056] Step four: the mixture is placed at a temperature of 110°C, dried for 7 hours, and then calcined to obtain the modified kaolin.

[0057] In step one of the embodiment, the heating temperature is 50°C, the heating time is 10 minutes, and the rotation speed of the ball mill is 1300 revolutions per minute.

[0058] In step four of the embodiment, after the mixture is dried, it is placed at a temperature of 600°C and calcined for 2 hours to obtain the modified kaolin.

[0059] The preparation method of the ceramic glaze water for preventing cracks of the embodiment comprises the following steps:

[0060] S1, according to the proportion, sodium feldspar, dolomite, potassium feldspar, zinc white and frit are weighed and taken, and the above raw materials are sent into a ball mill for impact and grinding, and the ground material is mixture A;

[0061] S2, according to the proportion, modified kaolin, barium carbonate and quartz are weighed and taken, and the above raw materials and mixture A are added into a mixer for mixing until the mixture is uniformly mixed to obtain mixture B which is uniformly mixed;

[0062] S3, the mixture B which is uniformly mixed is moved to a pool furnace for calcination, and mixture C is obtained after calcination;

[0063] S4, crushing the mixture C, rinsing it after crushing, drying it after rinsing, grinding it in a ball mill after drying to obtain a mixture D, and mixing the mixture D with water to prepare a glaze;

[0064] S5. Test the pH value of the glaze and make appropriate adjustments. Then let the glaze stand for a while and set it aside.

[0065] In step S2 of this embodiment, the mixing time is 40 min and the rotation speed is 40 r / min.

[0066] The temperature of the pool furnace in this embodiment is 1450°C and the sintering time is 9 hours.

[0067] In step S4 of this embodiment, the powder is ground into 170 mesh after drying. Example 2

[0068] The present invention of this embodiment provides a crack-proof ceramic glaze, comprising albite, potassium feldspar, modified kaolin, dolomite, zinc white, barium carbonate, quartz, and frit;

[0069] The specific formula includes the following raw materials (calculated by mass): 18 parts of sodium feldspar, 18 parts of potassium feldspar, 20 parts of modified kaolin, 8 parts of dolomite, 5 parts of zinc white, 4 parts of barium carbonate, 5 parts of quartz, and 8 parts of frit.

[0070] The modified kaolin of this embodiment includes the following components: kaolin, ethylene-1-octene copolymer, polyethylene, itaconic acid and solvent.

[0071] The modified kaolin of this embodiment includes the following components in percentage by weight: 35% kaolin, 13% ethylene-1-octene copolymer, 12% polyethylene, 4% itaconic acid, and the balance ethanol solution.

[0072] The preparation method of the modified kaolin of this embodiment comprises the following steps:

[0073] Step 1: Grind the kaolin into 1150 mesh and put it into a ball mill for stirring and heating;

[0074] Step 2: Add itaconic acid solution to the kaolin heated in step 1, stir for 4 hours, and then wash with ethanol solution to obtain acidified kaolin;

[0075] Step 3: Adding ethylene-1-octene copolymer and polyethylene to the acidified kaolin, and wet-milling in a ball mill using an ethanol solution as a solvent for 7 hours to obtain a mixture;

[0076] Step 4: Place the mixture at a temperature of 115° C., dry it for 8 hours, and then calcine it to obtain modified kaolin.

[0077] In step 1 of this embodiment, the heating temperature is 55° C., the heating time is 15 minutes, and the speed of the ball machine is 1400 rpm.

[0078] In step 4 of this embodiment, after the mixture is dried, it is calcined at a temperature of 650° C. for 2.5 hours to obtain modified kaolin.

[0079] A method for preparing a crack-resistant ceramic glaze according to this embodiment includes the following steps:

[0080] S1. Weigh albite, dolomite, potassium feldspar, zinc white, and frit according to the proportions, feed the raw materials into a ball mill, and then impact and grind them. The ground materials are mixture A.

[0081] S2. Weigh modified kaolin, barium carbonate, and quartz according to the ratio, add the above raw materials and mixture A into a mixer and mix until they are uniformly mixed to obtain a uniformly mixed mixture B;

[0082] S3, transferring the uniformly mixed mixture B to a pool furnace for calcination to obtain a mixture C;

[0083] S4, crushing the mixture C, rinsing it after crushing, drying it after rinsing, grinding it in a ball mill after drying to obtain a mixture D, and mixing the mixture D with water to prepare a glaze;

[0084] S5. Test the pH value of the glaze and make appropriate adjustments. Then let the glaze stand for a while and set it aside.

[0085] In step S2 of this embodiment, the mixing time is 45 minutes and the rotation speed is 50 r / min.

[0086] The temperature of the pool furnace in this embodiment is 1470°C and the sintering time is 10 hours.

[0087] In step S4 of this embodiment, the powder is ground into 180 mesh after drying. Example 3

[0088] The present invention of this embodiment provides a crack-proof ceramic glaze, comprising albite, potassium feldspar, modified kaolin, dolomite, zinc white, barium carbonate, quartz, and frit;

[0089] The specific formula includes the following raw materials (calculated by mass): 19 parts of sodium feldspar, 16 parts of potassium feldspar, 25 parts of modified kaolin, 5 parts of dolomite, 7 parts of zinc white, 2 parts of barium carbonate, 7 parts of quartz, and 6 parts of frit.

[0090] The modified kaolin of this embodiment includes the following components: kaolin, ethylene-1-octene copolymer, polyethylene, itaconic acid and solvent.

[0091] The modified kaolin of this embodiment includes the following components in percentage by weight: 40% kaolin, 12% ethylene-1-octene copolymer, 13% polyethylene, 3% itaconic acid, and the balance ethanol solution.

[0092] The preparation method of the modified kaolin of this embodiment comprises the following steps:

[0093] Step 1: Grind the kaolin into 1200 mesh and put it into a ball mill for stirring and heating;

[0094] Step 2: Add itaconic acid solution to the kaolin heated in step 1, stir for 5 hours, and then wash with ethanol solution to obtain acidified kaolin;

[0095] Step 3: Adding ethylene-1-octene copolymer and polyethylene to the acidified kaolin, and wet-milling in a ball mill using an ethanol solution as a solvent for 8 hours to obtain a mixture;

[0096] Step 4: Place the mixture at a temperature of 120° C., dry it for 9 hours, and then calcine it to obtain modified kaolin.

[0097] In step 1 of this embodiment, the heating temperature is 60° C., the heating time is 20 min, and the speed of the ball machine is 1500 rpm.

[0098] In step 4 of this embodiment, after the mixture is dried, it is calcined at 700° C. for 3 hours to obtain modified kaolin.

[0099] A method for preparing a crack-resistant ceramic glaze according to this embodiment includes the following steps:

[0100] S1. Weigh albite, dolomite, potassium feldspar, zinc white, and frit according to the proportions, feed the raw materials into a ball mill, and then impact and grind them. The ground materials are mixture A.

[0101] S2. Weigh modified kaolin, barium carbonate, and quartz according to the ratio, add the above raw materials and mixture A into a mixer and mix until they are uniformly mixed to obtain a uniformly mixed mixture B;

[0102] S3, transferring the uniformly mixed mixture B to a pool furnace for calcination to obtain a mixture C;

[0103] S4, crushing the mixture C, rinsing it after crushing, drying it after rinsing, grinding it in a ball mill after drying to obtain a mixture D, and mixing the mixture D with water to prepare a glaze;

[0104] S5. Test the pH value of the glaze and make appropriate adjustments. Then let the glaze stand for a while and set it aside.

[0105] In step S2 of this embodiment, the mixing time is 50 min and the rotation speed is 60 r / min.

[0106] The temperature of the pool furnace in this embodiment is 1500°C and the sintering time is 11 hours.

[0107] In step S4 of this embodiment, the powder is ground into 190 mesh size after drying.

[0108] Comparative Example 1.

[0109] The difference from Example 2 is that the ceramic glaze is made from ordinary raw materials.

[0110] The products of Examples 1-3 and Comparative Example 1 were subjected to performance tests;

[0111] Finished ceramic products made using the ceramic glazes prepared in Examples 1-3 of the present invention and finished ceramic products made using ceramic glazes prepared using common raw materials were subjected to quality inspection. Impact resistance was measured according to ASTM C368 of the United States. Other properties were also tested. The specific results are shown in the following table.

[0112]

[0113] The innovation of the present invention is:

[0114] The ethylene-1-octene copolymer of the present invention has good flexibility, tensile strength and tear strength, and high viscosity strength. The ethylene-1-octene copolymer and polyethylene are combined to further enhance the bonding force between the raw materials, thereby contributing to enhanced impact resistance and tensile strength at break. At the same time, under the action of itaconic acid, itaconic acid acts as a grafting monomer and reacts with the ethylene-1-octene copolymer, thereby introducing itaconic acid groups into the molecular chain of the ethylene-1-octene copolymer. This grafting reaction can enhance its bonding performance, thereby improving the anti-cracking strength of ceramic glaze through the setting of modified kaolin.

[0115] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

[0116] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A crack-proof ceramic glaze, characterized in that: Including sodium feldspar, potassium feldspar, modified kaolin, dolomite, zinc white, barium carbonate, quartz, frit; The specific formula includes the following raw materials in parts by mass: 16-19 parts of sodium feldspar, 16-20 parts of potassium feldspar, 15-25 parts of modified kaolin, 5-11 parts of dolomite, 3-7 parts of zinc white, 2-5 parts of barium carbonate, 3-7 parts of quartz, and 6-10 parts of frit; The modified kaolin comprises the following components: kaolin, ethylene-1-octene copolymer, polyethylene, itaconic acid and solvent; Specifically, it includes the following components in percentage by weight: 30-40% kaolin, 12-15% ethylene-1-octene copolymer, 11-13% polyethylene, 3-5% itaconic acid, and the balance ethanol solution; The preparation method of the modified kaolin comprises the following steps: Step 1: Grind the kaolin into 1100-1200 mesh and put it into a ball mill for stirring and heating; Step 2: Add itaconic acid solution to the kaolin heated in step 1, stir for 3-5 hours, and then wash with ethanol solution to obtain acidified kaolin; Step 3: Add ethylene-1-octene copolymer and polyethylene to the acidified kaolin, and wet-mill in an ethanol solution as a solvent for 6-8 hours to obtain a mixture; Step 4: Place the mixture at a temperature of 110-120° C., dry it for 7-9 hours, and then calcine it to obtain modified kaolin.

2. The anti-cracking ceramic glaze according to claim 1, characterized in that: In the step 1, the heating temperature is 50-60° C., the heating time is 10-20 min, and the speed of the ball machine is 1300-1500 rpm.

3. The anti-cracking ceramic glaze according to claim 2, characterized in that: After the mixture in step 4 is dried, it is calcined at a temperature of 600-700° C. for 2-3 hours to obtain modified kaolin.

4. A method for preparing the anti-cracking ceramic glaze according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1. Weigh albite, dolomite, potassium feldspar, zinc white, and frit according to the proportions, feed the raw materials into a ball mill, and then impact and grind them. The ground materials are mixture A. S2. Weigh modified kaolin, barium carbonate, and quartz according to the ratio, add the above raw materials and mixture A into a mixer and mix until they are uniformly mixed to obtain a uniformly mixed mixture B; S3, transferring the uniformly mixed mixture B to a pool furnace for calcination to obtain a mixture C; S4, crushing the mixture C, rinsing it after crushing, drying it after rinsing, grinding it in a ball mill after drying to obtain a mixture D, and mixing the mixture D with water to prepare a glaze; S5. Test the pH value of the glaze and make appropriate adjustments. Then let the glaze stand for a while and set it aside.

5. The method for preparing a crack-proof ceramic glaze according to claim 4, characterized in that: In step S2, the mixing time is 40-50 min and the rotation speed is 40-60 r / min.

6. The method for preparing a crack-proof ceramic glaze according to claim 5, characterized in that: In step S3, the temperature of the pool furnace is 1450-1500° C., and the sintering time is 9-11 hours.

7. The method for preparing a crack-proof ceramic glaze according to claim 6, characterized in that: In the step S4, after drying, the product is ground into 170-190 mesh.

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