An electric porcelain glaze structure with a composite transition layer and a preparation method thereof

Abstract

The application discloses an electric porcelain glazing structure with a composite transition layer and a preparation method thereof. The electric porcelain glazing structure comprises, from the body outward, a bottom glaze, a transition layer and a surface glaze. The transition layer comprises a base slurry and a reinforcing agent. The base slurry comprises silica sol with a mass percentage of 5% to 15% and a mass percentage of 0.5% to 2%. The reinforcing agent comprises nano-silica with a mass percentage of 0.5% to 2%, nano-alumina with a mass percentage of 0.5% to 2% and nano-zirconia with a mass percentage of 0.5% to 2%. The content of the silica sol uniformly increases in the transition layer from the bottom glaze to the surface glaze, so that the transition layer forms a continuously changing CTE gradient. The content of the nano-silica uniformly decreases in the transition layer from the bottom glaze to the surface glaze, so as to avoid excessive nano-silica from reacting with the components of the surface glaze. The content of the silica sol uniformly increases in the transition layer from the bottom glaze to the surface glaze, so as to match the high temperature requirement of the surface glaze. The content of the nano-silica uniformly increases in the transition layer from the bottom glaze to the surface glaze, so as to cope with the high thermal stress of the surface glaze.

Description

Technical Field

[0001] This invention relates to the field of electrical porcelain manufacturing technology, and more specifically, to an electrical porcelain glaze structure with a composite transition layer and its preparation method. Background Technology

[0002] Electric porcelain is usually covered with a glaze to improve its durability. However, in the traditional structure of electric porcelain, these glazes usually have certain defects. When the electric porcelain is subjected to alternating hot and cold temperatures, the glaze layer and the body are prone to cracking at the interface due to the different rates of thermal expansion and contraction. In order to improve toughness, traditional methods add some other materials to the glaze to balance the coefficient of thermal expansion. However, the uneven distribution of these materials may cause internal micro-cracks.

[0003] The existing glazes of electrical porcelain have relatively limited functions and cannot simultaneously meet the combined requirements of antibacterial, conductive, or corrosion-resistant properties. Although existing technologies attempt to improve this by layering multiple glazes or uniformly doping functional materials, these methods are usually complex, costly, or have limited performance improvements due to unreasonable material distribution, making it difficult to achieve industrial applications. Summary of the Invention

[0004] To address the aforementioned technical problems, the present invention aims to provide an electric porcelain glaze structure with a composite transition layer and its preparation method. Through innovative gradient transition layer design and dynamic spraying process, the strength and durability of the electric porcelain glaze are improved.

[0005] To achieve the above objectives, the present invention provides an electric porcelain glaze structure with a composite transition layer. In the technical solution of the present invention, the electric porcelain glaze structure includes, from the body outward, a bottom glaze, a transition layer and a top glaze.

[0006] The transition layer comprises a matrix slurry and a reinforcing agent, wherein the matrix slurry comprises a mass percentage of [missing information]. of and the percentage of mass is The silica sol; the reinforcing agent comprises a mass percentage of nano The mass percentage is of Rare earth oxides and their mass percentages are nano .

[0007] Furthermore, in the technical solution of the present invention, the... Through stabilizer doping, the The content increases uniformly in the transition layer from the bottom glaze to the top glaze. Increasing evenly to This creates a continuously varying CTE gradient in the transition layer; the nano... The content decreases uniformly from the bottom glaze to the top glaze in the transition layer. Decrease evenly to To avoid excessive nanoparticles Reacts with the components in the surface glaze; The content of rare earth oxides increases uniformly in the transition layer from the bottom glaze to the top glaze. Increasing evenly to To match the higher temperature requirements of the surface glaze side; the nano The content increases uniformly in the transition layer from the bottom glaze to the top glaze. Increasing evenly to To cope with the higher thermal stress on the surface glaze side.

[0008] Furthermore, in the technical solution of the present invention, the bottom glaze adopts the following composition formula by mass percentage: of , of , of and of .

[0009] Furthermore, in the technical solution of the present invention, the surface glaze adopts the following composition formula by mass percentage: of , of , of , of as well as Functional additives.

[0010] Furthermore, in the technical solution of the present invention, in the... Through stabilizer doping, the stabilizer has a molar percentage of [missing information]. of .

[0011] Furthermore, in the technical solution of the present invention, in the... Through stabilizer doping, the stabilizer is present at a mass percentage of [missing information]. of .

[0012] Furthermore, in the technical solution of this invention, the functional additive is nano-sized. Particles, nano Particles and graphene.

[0013] In another aspect, the present invention provides a method for preparing an electric porcelain glaze structure with a composite transition layer, for realizing an electric porcelain glaze structure with a composite transition layer as described above, specifically including the following steps:

[0014] Step S1, Raw material pretreatment:

[0015] Step S1-1: Mix and ball-mill the raw materials of the bottom glaze formula until... Prepare the base glaze slurry;

[0016] Step S1-2, doping The powder is mixed with silica sol and ultrasonically dispersed for 2-4 hours, and a reinforcing agent is added to form a transition layer slurry.

[0017] Steps S1-3: Mix and ball-mill the surface glaze formula raw materials until... Prepare the surface glaze slurry;

[0018] Step S2: Dynamic gradient spraying;

[0019] Step S2-1: Using a wet electrostatic spraying process, the base glaze slurry is sprayed onto the blank, with a spraying thickness of [missing information]. After spraying, pre-sintering is carried out at a temperature of 600℃ for 30 minutes;

[0020] Step S2-2: Apply the transition layer slurry to the base glaze using a dual-channel dynamic spraying process, with a spraying thickness of [missing information]. After spraying, infrared drying is performed at a temperature of 80℃, a humidity of 50%RH, and a time of 10 minutes.

[0021] Step S2-3: Apply the surface glaze slurry to the transition layer using an impregnation method. The thickness of the surface glaze applied to the transition layer is... After impregnation, dry at a temperature of 40-60℃, a humidity of 50%RH, and a time of 4-6 hours;

[0022] Step S3, Segmented Sintering:

[0023] Step S3-1: After completing the dynamic gradient spraying and drying, perform the first stage of low-temperature preheating at a temperature of 800℃ for 1 hour.

[0024] Step S3-2: After completing the first stage of low-temperature pre-firing, rapidly raise the temperature to 1100℃ for the second stage of transition sintering, and fire for 30 minutes;

[0025] Step S3-3: After completing the second stage of transition sintering, further raise the temperature to 1250-1300℃ for the third stage of high-temperature sintering, and sinter for 20 minutes;

[0026] Step S3-4: After completing the third stage of high-temperature sintering, the temperature is naturally cooled to 800℃, and then cooled to room temperature by air cooling to complete the cooling process.

[0027] Furthermore, in the technical solution of the present invention, in step S1-2, the doped... The transition layer slurry, made by mixing powder and silica sol, undergoing ultrasonic dispersion for 2-4 hours, and adding reinforcing agents, is divided into two categories:

[0028] Transition layer slurry, type A: mass percentage ,nanometer mass percentage , The mass percentage of rare earth oxides is ,nanometer mass percentage ;

[0029] Transition layer slurry type B: mass percentage ,nanometer mass percentage , The mass percentage of rare earth oxides is ,nanometer mass percentage .

[0030] Furthermore, in the technical solution of the present invention, the specific steps of spraying the transition layer slurry onto the underlying glaze using a dual-channel dynamic spraying process in step S2-2 are as follows:

[0031] The dual channels contain transition layer slurry type A and transition layer slurry type B, respectively.

[0032] The flow rate ratio of transition layer slurry type A and transition layer slurry type B during the spraying process is determined by... Uniform change to .

[0033] Beneficial Effects: In summary, this invention provides an electric porcelain glaze structure with a composite transition layer and its preparation method. In the technical solution of this invention, the strength and durability of the electric porcelain glaze are improved through an innovative gradient transition layer design and dynamic spraying process. The gradient transition layer... The content increases uniformly from the bottom glaze to the top glaze, resulting in a perfect transition of the thermal expansion coefficient between layers. This improves the bonding strength and thermal shock resistance of the electric porcelain glaze, solving the problem of easy cracking in traditional glazes. In addition, in the technical solution of this invention, the transition layer adopts a dual-channel dynamic spraying process. By adjusting different slurry ratios in real time, a composition gradient layer can be formed in one go. Compared with the coating and drying process in traditional processes, this can effectively improve production efficiency and precision.

[0034] Other features and advantages of the present invention will be set forth in the following description. Attached Figure Description

[0035] To more clearly illustrate the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a flowchart illustrating a method for preparing an electric porcelain glaze structure with a composite transition layer according to an embodiment of the present invention. Detailed Implementation

[0037] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0038] The core of this invention is to provide an electric porcelain glaze structure with a composite transition layer and its preparation method, which improves the strength and durability of the electric porcelain glaze through innovative gradient transition layer design and dynamic spraying process.

[0039] One embodiment of the present invention proposes an electric porcelain glaze structure with a composite transition layer. In this embodiment, the electric porcelain glaze structure includes, from the body outward, a bottom glaze, a transition layer and a top glaze.

[0040] The base glaze uses the following composition formula by weight percentage: of , of , of and of .

[0041] The surface glaze uses the following composition formula by weight percentage: of , of , of , of as well as Functional additives.

[0042] The transition layer comprises a matrix slurry and a reinforcing agent, wherein the matrix slurry comprises, by mass percentage, a... of and the percentage of mass is silica sol, At high temperatures, a tetragonal-to-monoclinic phase transformation occurs, which can absorb crack propagation energy and improve the thermal shock resistance of the glaze; the reinforcing agent includes [amount] by mass percentage. nano The mass percentage is of Rare earth oxides and their mass percentages are nano Add nano Can be with Forming a "nanocomposite structure" to inhibit Abnormal grain growth, while through The combination of bond reinforcement and the underlying glaze, with added... Rare earth oxides can react with... generate Glass phase, filling Grain boundaries reduce interfacial energy and improve high-temperature oxidation resistance.

[0043] Specifically, in this embodiment, Through stabilizer doping The content increases uniformly in the transition layer from the bottom glaze to the top glaze. Increasing evenly to This allows the CTE to gradually change between layers during sintering, creating a continuously varying CTE gradient in the transition layer; nano The content decreases uniformly from the bottom glaze to the top glaze in the transition layer. Decrease evenly to To avoid excessive nanoparticles With the surface glaze The components react; The content of rare earth oxides increases uniformly in the transition layer from the bottom glaze to the top glaze. Increasing evenly to To match the higher temperature requirements of the surface glaze; nano The content increases uniformly in the transition layer from the bottom glaze to the top glaze. Increasing evenly to To cope with the higher thermal stress on the surface glaze side.

[0044] Specifically, in this embodiment, in Through stabilizer doping, the stabilizer has a molar percentage of [missing information]. of .

[0045] In another embodiment, in Through stabilizer doping, the stabilizer is present at a mass percentage of [missing information]. of .

[0046] Specifically, in this embodiment, the functional additive is nano-sized. Particles, nano Particles and graphene.

[0047] This embodiment also provides a method for preparing an electric porcelain glaze structure with a composite transition layer, used to achieve the electric porcelain glaze structure with a composite transition layer as described above. Figure 1 This is a flowchart illustrating a method for preparing an electrical porcelain glaze structure with a composite transition layer according to this embodiment. Figure 1 As shown, the specific steps include the following:

[0048] Step S1, Raw material pretreatment:

[0049] Step S1-1: Mix and ball-mill the raw materials of the bottom glaze formula until... Prepare the base glaze slurry;

[0050] Step S1-2, doping The powder is mixed with silica sol and ultrasonically dispersed for 2-4 hours, and a reinforcing agent is added to form a transition layer slurry.

[0051] Steps S1-3: Mix and ball-mill the surface glaze formula raw materials until... Prepare the surface glaze slurry;

[0052] Step S2: Dynamic gradient spraying;

[0053] Step S2-1: Using a wet electrostatic spraying process, the base glaze slurry is sprayed onto the blank, with a spraying thickness of [missing information]. After spraying, pre-sintering is carried out at a temperature of 600℃ for 30 minutes to remove organic matter and preliminarily sinter the neck connection;

[0054] Step S2-2: Apply the transition layer slurry to the base glaze using a dual-channel dynamic spraying process, with a spraying thickness of [missing information]. After spraying, infrared drying is performed at a temperature of 80℃ and a humidity of 50%RH for 10 minutes to prevent cracking.

[0055] Step S2-3: Apply the surface glaze slurry to the transition layer using an impregnation method. The thickness of the surface glaze applied to the transition layer is... After impregnation, dry at a temperature of 40-60℃, a humidity of 50%RH, and a time of 4-6 hours to avoid rapid shrinkage and cracking;

[0056] Step S3, Segmented Sintering:

[0057] Step S3-1: After completing the dynamic gradient spraying and drying, perform the first stage of low-temperature preheating at a temperature of 800℃ (heating rate of 5℃ / min) for 1 hour to slowly remove residual moisture and volatile gases.

[0058] Step S3-2: After completing the first stage of low-temperature pre-firing, rapidly raise the temperature to 1100℃ (heating rate of 10℃ / min) for the second stage of transition sintering, firing for 30 minutes to suppress... The particles grew abnormally large;

[0059] Step S3-3: After completing the second stage of transition sintering, further raise the temperature to 1250-1300℃ for the third stage of high-temperature sintering, and sinter for 20 minutes to complete the sintering.

[0060] Step S3-4: After completing the third stage of high-temperature sintering, the temperature is naturally cooled to 800℃, and then cooled to room temperature by air cooling to complete the cooling process.

[0061] Specifically, in this embodiment, in step S1-2, the doped... The transition layer slurry, made by mixing powder and silica sol, undergoing ultrasonic dispersion for 2-4 hours, and adding reinforcing agents, is divided into two categories:

[0062] Transition layer slurry, type A: mass percentage ,nanometer mass percentage , The mass percentage of rare earth oxides is ,nanometer mass percentage ;

[0063] Transition layer slurry type B: mass percentage ,nanometer mass percentage , The mass percentage of rare earth oxides is ,nanometer mass percentage .

[0064] Specifically, in this embodiment, the specific steps of spraying the transition layer slurry onto the base glaze using a dual-channel dynamic spraying process in step S2-2 are as follows:

[0065] The dual channels contain transition layer slurry type A and transition layer slurry type B, respectively.

[0066] The flow rate ratio of transition layer slurry type A and transition layer slurry type B during the spraying process is determined by... Uniform change to .

[0067] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric porcelain glaze structure with a composite transition layer, characterized in that, From the body outwards, it includes the bottom glaze, the transition layer and the top glaze; The transition layer includes: The matrix slurry, including a mass percentage of of and the percentage of mass is silica sol; Reinforcing agent, including a mass percentage of nano The mass percentage is of Rare earth oxides and their mass percentages are nano ; The Through stabilizer doping, the The content increases uniformly in the transition layer from the bottom glaze to the top glaze. Increasing evenly to This creates a continuously varying gradient of thermal expansion coefficients in the transition layer; The nano The content decreases uniformly from the bottom glaze to the top glaze in the transition layer. Decrease evenly to To avoid excessive nanoparticles It reacts with the components in the surface glaze; The The content of rare earth oxides increases uniformly in the transition layer from the bottom glaze to the top glaze. Increasing evenly to To match the higher temperature requirements of the surface glaze side; The nano The content increases uniformly in the transition layer from the bottom glaze to the top glaze. Increasing evenly to To cope with the higher thermal stress on the surface glaze side; The underlying glaze uses the following composition formula by weight percentage: of , of , of and of ; The surface glaze uses the following composition formula by weight percentage: of , of , of , of as well as Functional additives.

2. The electric porcelain glaze structure with a composite transition layer according to claim 1, characterized in that, In the Through stabilizer doping, the stabilizer has a molar percentage of [missing information]. of .

3. The electric porcelain glaze structure with a composite transition layer according to claim 1, characterized in that, In the Through stabilizer doping, the stabilizer is present at a mass percentage of [missing information]. of .

4. The electric porcelain glaze structure with a composite transition layer according to claim 1, characterized in that, The functional additive is nano-sized. Particles, nano Particles and graphene.

5. A method for preparing an electric porcelain glaze structure with a composite transition layer, used to achieve an electric porcelain glaze structure with a composite transition layer as described in any one of claims 1-4, characterized in that, Includes the following steps: Step S1, Raw material pretreatment: Step S1-1: Mix and ball-mill the raw materials of the bottom glaze formula until... Prepare the base glaze slurry; Step S1-2, doping The powder is mixed with silica sol and ultrasonically dispersed for 2-4 hours, and a reinforcing agent is added to form a transition layer slurry. Steps S1-3: Mix and ball-mill the surface glaze formula raw materials until... Prepare the surface glaze slurry; Step S2: Dynamic gradient spraying; Step S2-1: Using a wet electrostatic spraying process, the base glaze slurry is sprayed onto the blank, with a spraying thickness of [missing information]. After spraying, pre-sintering is carried out at a temperature of 600℃ for 30 minutes; Step S2-2: Apply the transition layer slurry to the base glaze using a dual-channel dynamic spraying process, with a spraying thickness of [missing information]. After spraying, infrared drying is performed at a temperature of 80℃, a humidity of 50%RH, and a time of 10 minutes. Step S2-3: Apply the surface glaze slurry to the transition layer using an impregnation method. The thickness of the surface glaze applied to the transition layer is... After impregnation, dry at a temperature of 40-60℃, a humidity of 50%RH, and a time of 4-6 hours; Step S3, Segmented Sintering: Step S3-1: After completing the dynamic gradient spraying and drying, perform the first stage of low-temperature preheating at a temperature of 800℃ for 1 hour. Step S3-2: After completing the first stage of low-temperature pre-firing, rapidly raise the temperature to 1100℃ for the second stage of transition sintering, and fire for 30 minutes; Step S3-3: After completing the second stage of transition sintering, further raise the temperature to 1250-1300℃ for the third stage of high-temperature sintering, and sinter for 20 minutes; Step S3-4: After completing the third stage of high-temperature sintering, the temperature is naturally cooled to 800℃, and then cooled to room temperature by air cooling to complete the cooling process.

6. The method for preparing an electric porcelain glaze structure with a composite transition layer according to claim 5, characterized in that, In step S1-2, the doped The transition layer slurry, made by mixing powder and silica sol, undergoing ultrasonic dispersion for 2-4 hours, and adding reinforcing agents, is divided into two categories: Transition layer slurry, type A: mass percentage ,nanometer mass percentage , The mass percentage of rare earth oxides is ,nanometer mass percentage ; Transition layer slurry type B: mass percentage ,nanometer mass percentage , The mass percentage of rare earth oxides is ,nanometer mass percentage .

7. The method for preparing an electric porcelain glaze structure with a composite transition layer according to claim 6, characterized in that, In step S2-2, the specific steps for spraying the transition layer slurry onto the base glaze using a dual-channel dynamic spraying process are as follows: The dual channels contain transition layer slurry type A and transition layer slurry type B, respectively. The flow rate ratio of transition layer slurry type A and transition layer slurry type B during the spraying process is determined by... Uniform change to .

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