Energy-saving ceramic tile and method of making same

Abstract

The application provides an energy-saving ceramic tile and a manufacturing method thereof. The energy-saving ceramic tile comprises a first layer and a second layer arranged oppositely, the first layer has a first hole structure, the second layer has a second hole structure, the pore size of the first hole structure is different from the pore size of the second hole structure, and the first hole structure is filled with a phase change material. In the energy-saving ceramic tile and the manufacturing method thereof, the first hole structure and the second hole structure are arranged, and the first hole structure is filled with the phase change material, which is beneficial to increasing the durability of the energy-saving ceramic tile, and the phase change material absorbs or releases heat to store energy, which is beneficial to maintaining the stability of the environmental temperature and improving the comfort of users.

Description

Technical Field

[0001] This application relates to the field of building technology, and in particular to an energy-saving ceramic brick and its manufacturing method. Background Technology

[0002] Ceramic tiles, a commonly used building material, can be used for the decoration and protection of walls and floors. Currently, ceramic tiles do not have the ability to store energy and cannot regulate temperature when the ambient temperature changes, resulting in a poor user experience. Therefore, how to achieve energy storage in ceramic tiles has become an urgent problem to be solved. Summary of the Invention

[0003] In a first aspect, this application provides an energy-saving ceramic brick, which includes a first layer and a second layer disposed opposite to each other. The first layer has a first pore structure, and the second layer has a second pore structure. The pore size of the first pore structure is different from that of the second pore structure, and the first pore structure is filled with a phase change material.

[0004] Secondly, this application also provides a method for manufacturing energy-saving ceramic tiles, characterized by comprising the following steps:

[0005] Provide the first billet and the second billet;

[0006] A pore-forming agent with a first pore size and a pore-forming agent with a second pore size are added to the first billet and the second billet, respectively, to obtain a third billet and a fourth billet;

[0007] The third and fourth billets are calcined to form a first layer and a second layer disposed opposite to each other, wherein the first layer has a first pore structure and the second layer has a second pore structure;

[0008] Preparation of phase change materials;

[0009] The phase change material is filled into the first porous structure.

[0010] Compared with existing technologies, the energy-saving ceramic tile of this application, by setting a first hole structure and a second hole structure and filling the first hole structure with phase change material, is conducive to increasing the durability of the energy-saving ceramic tile. At the same time, by absorbing or releasing heat through the phase change material for energy storage, it is beneficial to maintain the stability of the ambient temperature and improve user comfort. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the implementation will be briefly introduced below. Obviously, the drawings described below are some implementations of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of an energy-saving ceramic brick provided in one embodiment of this application.

[0013] Figure 2 This is a schematic diagram of the structure of an energy-saving ceramic brick provided in one embodiment of this application.

[0014] Figure 3 This is a schematic flowchart illustrating a method for manufacturing energy-saving ceramic bricks according to an embodiment of this application.

[0015] Figure 1 and / or Figure 2 In the middle, 10-energy-saving ceramic tile, 11-first layer, 110-first pore structure, 12-second layer, 120-second pore structure, 13-third layer, 130-third pore structure, 14-phase change material, 15-glaze layer. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0017] In this document, references to "embodiment" or "implementation" mean that a particular feature, structure, or characteristic described in connection with an embodiment or implementation may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0019] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third," etc., are used to distinguish different objects, not to describe a specific order. Moreover, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0020] In the description of this invention, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may be not directly connected to the other devices but have an intermediary device.

[0021] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0022] This application provides an energy-saving ceramic tile 10. Please refer to [link / reference]. Figure 1 , Figure 1 This is a schematic diagram of the structure of an energy-saving ceramic brick 10 provided in one embodiment of this application. In one embodiment, the energy-saving ceramic brick 10 includes a first layer 11 and a second layer 12 disposed opposite to each other. The first layer 11 has a first pore structure 110, and the second layer 12 has a second pore structure 120. The pore size of the first pore structure 110 is different from that of the second pore structure 120. The first pore structure 110 is filled with a phase change material 14.

[0023] Specifically, the energy-saving ceramic tile 10 may also include a glaze layer 15, with the glaze layer 15, the second layer 12 and the first layer 11 stacked in sequence. The glaze layer 15 can be used to increase the aesthetics and stain resistance of the energy-saving ceramic tile 10.

[0024] The energy-saving ceramic tile 10 includes a first layer 11 and a second layer 12 disposed opposite to each other. The first layer 11 has a first hole structure 110, and the second layer 12 has a second hole structure 120. Regarding the hole diameter, the hole diameters of the first hole structure 110 and the second hole structure 120 can be the same or different. For example, the hole diameter of the first hole structure 110 can be larger than that of the second hole structure 120, or the hole diameter of the first hole structure 110 can be smaller than that of the second hole structure 120; no limitation is made here.

[0025] For example, the aperture size of the first hole structure 110 can be larger than the aperture size of the second hole structure 120. In practical use, the first layer 11 of the energy-saving ceramic tile 10 can be placed on the side closer to the wall, and the second layer 12 can be placed on the side farther away from the wall.

[0026] Furthermore, the aforementioned phase change material 14 can refer to a material capable of transforming from one phase to another within a certain temperature range. The process of transforming from one phase to another is called a phase change process. During the phase change process, the phase change material 14 can store energy by absorbing or releasing heat, thereby achieving the effect of regulating the ambient temperature.

[0027] Taking solid-liquid phase change as an example, when the solid phase change material 14 is heated to its melting temperature, it undergoes a phase change from solid to liquid. During this phase change, the phase change material 14 absorbs and stores a large amount of latent heat, and the ambient temperature around the phase change material 14 decreases accordingly. When the phase change material 14 cools, the heat stored in it dissipates into the environment, and the ambient temperature around the phase change material 14 increases accordingly, at which point the phase change material 14 undergoes a phase change from liquid to solid.

[0028] Since the phase change material 14 is filled within the first pore structure 110, when the pore size of the first pore structure 110 is larger than that of the second pore structure 120, the first pore structure 110 can accommodate more phase change material 14, which is beneficial for enhancing the energy storage effect of the energy-saving ceramic brick 10. Furthermore, setting different pore sizes also helps to ensure the mechanical properties of the energy-saving ceramic brick 10 and increase its durability.

[0029] As can be seen, in the embodiments of this application, the energy-saving ceramic brick 10 includes a first layer 11 and a second layer 12 disposed opposite to each other. The first layer 11 has a first pore structure 110, and the second layer 12 has a second pore structure 120. The pore size of the first pore structure 110 is different from that of the second pore structure 120. The first pore structure 110 is filled with a phase change material 14. This helps to ensure the mechanical properties of the energy-saving ceramic brick 10. At the same time, by storing energy through the phase change material 14 contained in the first pore structure 110, it helps to maintain the stability of the ambient temperature, improve user comfort, and achieve the effect of energy saving.

[0030] In one embodiment, the phase change material 14 includes a first core-shell structure, wherein the core of the first core-shell structure is made of decanoic acid-stearic acid and the outer shell of the first core-shell structure is made of silicon dioxide.

[0031] Specifically, in the first core-shell structure, the core material includes decanoic acid-stearic acid. Decanoic acid-stearic acid comprises decanoic acid and stearic acid. Compared to pure decanoic acid and pure stearic acid, decanoic acid-stearic acid has a lower eutectic temperature between 23°C and 27°C and a larger phase transition enthalpy. Considering that human comfort is higher when the ambient temperature range is between 18°C ​​and 27°C, incorporating decanoic acid-stearic acid into the core of the first core-shell structure helps regulate and stabilize the ambient temperature, thus improving user comfort. Furthermore, the more suitable ambient temperature helps reduce the frequency of users using air conditioners, fans, and other household appliances, thereby achieving energy conservation.

[0032] Furthermore, in the first core-shell structure, the outer shell is made of silicon dioxide. Silicon dioxide can be further processed into silica sol, and using silica sol to encapsulate the core of the first core-shell structure helps reduce leakage of the core material, minimize core material loss, and lower the maintenance costs of the energy-saving ceramic tile 10.

[0033] As can be seen, in the embodiments of this application, the phase change material 14 includes a first core-shell structure. The core of the first core-shell structure is made of decanoic acid-stearic acid, and the outer shell of the first core-shell structure is made of silicon dioxide. This helps to regulate the ambient temperature, maintain the stability of the ambient temperature, and improve user comfort. At the same time, it can achieve the effect of saving energy and reducing the maintenance cost of energy-saving ceramic tiles 10.

[0034] In one embodiment, the phase change material 14 further includes a second core-shell structure, wherein the core of the second core-shell structure is made of paraffin wax and the outer shell of the second core-shell structure is made of silicon dioxide.

[0035] Specifically, in the first core-shell structure, the core material includes paraffin wax. Paraffin wax has a phase transition temperature around room temperature and a relatively large heat of phase transition. Therefore, containing paraffin wax in the core of the second core-shell structure helps regulate and stabilize the ambient temperature, improving user comfort. Furthermore, the more suitable ambient temperature helps reduce the frequency of users using air conditioners, fans, and other household appliances, thus achieving energy savings.

[0036] Furthermore, in the second core-shell structure, the outer shell is made of silicon dioxide. Silicon dioxide can be further processed into silica sol, and using silica sol to encapsulate the core of the second core-shell structure helps reduce leakage of the core material, minimize core material loss, and lower the maintenance costs of the energy-saving ceramic tile 10.

[0037] As can be seen, in the embodiments of this application, the phase change material 14 includes a second core-shell structure. The core of the second core-shell structure is made of paraffin wax, and the outer shell of the second core-shell structure is made of silicon dioxide. This helps to regulate the ambient temperature, maintain the stability of the ambient temperature, and improve user comfort. At the same time, it can achieve the effect of saving energy and reducing the maintenance cost of energy-saving ceramic tiles 10.

[0038] Please see Figure 2 , Figure 2 This is a schematic diagram of the structure of an energy-saving ceramic tile 10 provided in one embodiment of this application. In one embodiment, the energy-saving ceramic tile 10 further includes a third layer 13 located between the first layer 11 and the second layer 12. The third layer 13 has a third hole structure 130. The hole size of the first hole structure 110 is a first hole diameter, the hole size of the second hole structure 120 is a second hole diameter, and the hole size of the third hole structure 130 is a third hole diameter. The first hole diameter is greater than or equal to the second hole diameter, and the third hole diameter is greater than or equal to the second hole diameter and less than or equal to the first hole diameter.

[0039] Specifically, the third layer 13 is disposed between the first layer 11 and the second layer 12 as a transition layer between the first layer 11 and the second layer 12. The third pore size is greater than or equal to the second pore size and less than or equal to the first pore size. In this way, the bonding strength between the energy-saving ceramic tile 10 and the wall and mortar can be further improved, the mechanical properties of the energy-saving ceramic tile 10 can be guaranteed, and the maintenance cost of the energy-saving ceramic tile 10 can be reduced.

[0040] Furthermore, the aperture of the first aperture ranges from 1 mm to 5 mm, the aperture of the second aperture ranges from 0.05 mm to 0.5 mm, and the aperture of the third aperture ranges from 0.5 mm to 1 mm.

[0041] As can be seen, in the embodiments of this application, by limiting the aperture range of the first aperture, the second aperture and the third aperture, it is possible to regulate the ambient temperature and improve user comfort while ensuring the mechanical properties of the energy-saving ceramic tile 10 and reducing the maintenance cost of the energy-saving ceramic tile 10.

[0042] This application provides a method for manufacturing energy-saving ceramic tiles. Please refer to [link / reference]. Figure 3 , Figure 3 This is a schematic flowchart illustrating a method for manufacturing energy-saving ceramic tiles according to one embodiment of this application. In one embodiment, the method for manufacturing energy-saving ceramic tiles includes the following steps:

[0043] S301, Provide a first billet and a second billet;

[0044] S302. A pore-forming agent with a first pore size and a pore-forming agent with a second pore size are added to the first billet and the second billet respectively to obtain a third billet and a fourth billet.

[0045] S303. Calcine the third billet and the fourth billet to form a first layer and a second layer disposed opposite to each other, wherein the first layer has a first pore structure and the second layer has a second pore structure;

[0046] S304, Preparation of phase change materials;

[0047] S305. The phase change material is filled into the first pore structure.

[0048] Wherein, the moisture content of the first billet is greater than or equal to the moisture content of the second billet. For example, the moisture content of the first billet may be in the range of 6% to 7%, and the moisture content of the second billet may be in the range of 5% to 6%, without limitation.

[0049] The first pore size ranges from 1 mm to 5 mm, and the second pore size ranges from 0.05 mm to 0.5 mm. The first and second pore sizes can be prepared by drying, heat preservation, ball milling, and sieving the animal and plant humic substances.

[0050] The mass ratio of the pore-forming agent with the first pore size to the pore-forming agent with the second pore size is a ratio of a first value range to a second value range, where the first value range is between 0.5 and 1.5, and the second value range is between 5 and 8. This helps control the density of the first and second pore structures, ensuring the mechanical properties and durability of energy-saving ceramic tiles, and reducing maintenance costs.

[0051] Specifically, a first billet and a second billet are provided, and a pore-forming agent with a first pore size and a pore-forming agent with a second pore size are added to the first billet and the second billet, respectively, to obtain a third billet and a fourth billet. During the calcination of the third billet and the fourth billet, the pore-forming agent vaporizes and decomposes as the ambient temperature rises, forming a first pore structure and a second pore structure in the third billet and the fourth billet. At the same time, the high temperature causes the third billet and the fourth billet to bond together, forming a connected first layer and a second layer.

[0052] Furthermore, the calcined first and second layers can be acid-washed in an acetic acid solution. The concentration of the acetic acid solution can be 1-2 mol / L, and the acid-washing time can be 25-35 minutes, etc., without limitation. This removes any small amount of impurities that may have entered the first and second layers during the calcination process, achieving a cleaning purpose. Furthermore, since the first and second layers contain silicate materials, these materials undergo a certain etching reaction with the weak acid, which increases the roughness of the energy-saving ceramic tile. This improves the bonding strength between the energy-saving ceramic tile and walls, mortar, and other materials, reducing the maintenance cost of the energy-saving ceramic tile.

[0053] After drying the first and second layers following acid pickling, a water glass solution is applied to the side of the first layer furthest from the second layer, and then dried. The modulus of the water glass solution can be in the range of 0.5 to 0.8. Because the water glass solution contains abundant -Si- groups, which have strong adsorption capacity, it helps improve the bonding strength between the energy-saving ceramic tiles and walls, mortar, and other materials, preventing the energy-saving ceramic tiles from falling off and reducing maintenance costs.

[0054] The dried first and second layers are placed under negative pressure, and phase change material is filled into the first pore structure to obtain the above-mentioned energy-saving ceramic brick.

[0055] As can be seen, in the embodiments of this application, a first blank and a second blank are provided, and a pore-forming agent with a first pore size and a pore-forming agent with a second pore size are added to the first blank and the second blank, respectively, to obtain a third blank and a fourth blank. The third blank and the fourth blank are calcined to form a first layer and a second layer arranged opposite to each other. The first layer has a first pore structure and the second layer has a second pore structure, thereby preparing a phase change material. Filling the first pore structure with the phase change material is beneficial to increasing the durability of the energy-saving ceramic tile. At the same time, the phase change material absorbs or releases heat for energy storage, which helps to maintain the stability of the ambient temperature and improve user comfort. On the other hand, it helps to improve the bonding strength between the energy-saving ceramic tile and the wall, mortar and other objects, prevent the energy-saving ceramic tile from falling off, and reduce the maintenance cost of the energy-saving ceramic tile.

[0056] In one embodiment, the phase change material includes a first core-shell structure, wherein the core of the first core-shell structure is made of decanoic acid-stearic acid, and the outer shell of the first core-shell structure is made of silicon dioxide. The preparation of the phase change material includes the following steps:

[0057] Decanoic acid and stearic acid are mixed to obtain the decanoic acid-stearic acid;

[0058] A silicic acid solution is obtained by mixing tetraethyl orthosilicate and anhydrous ethanol.

[0059] The decanoic acid-stearic acid was added to the silicic acid solution to obtain the first core-shell structure.

[0060] Specifically, the mass ratio of decanoic acid to stearic acid can be in the range of (60~90):(10~40), such as 70:30, 86:14, etc., without limitation. After mixing decanoic acid and stearic acid, place them in a container and place the container in a water bath at a temperature range of 30°C to 100°C for melting and mixing. The water bath temperature can be 40°C, 60°C, 75°C, 80°C, etc., without limitation. The water bath time can be in the range of 100 minutes to 150 minutes, such as 100 minutes, 120 minutes, 135 minutes, etc., without limitation. This facilitates the thorough mixing of decanoic acid and stearic acid, giving the core of the first core-shell structure a more suitable phase transition temperature, which helps to regulate and maintain the stability of the ambient temperature.

[0061] Tetraethyl orthosilicate is mixed with anhydrous ethanol to obtain a silicic acid solution. Decanoic acid-stearic acid is then added to the silicic acid solution and mixed to obtain the first core-shell structure. The mixing temperature range of decanoic acid-stearic acid and the silicic acid solution can be within the range of 50°C to 70°C, for example, 55°C, 60°C, 66°C, etc., and is not limited here. Before adding decanoic acid-stearic acid, the pH of the silicic acid solution can be adjusted to the range of 10 to 12, for example, adjusting the pH to approximately 11. The mixing time of decanoic acid-stearic acid and the silicic acid solution can be within the range of 4 hours to 6 hours, for example, 4.5 hours, 5 hours, 5.8 hours, etc., and is not limited here. This facilitates thorough mixing of decanoic acid-stearic acid and the silicic acid solution, forming a first core-shell structure with strong encapsulation. In practical use, this helps reduce leakage and loss of the core material, thus reducing the maintenance cost of energy-saving ceramic tiles.

[0062] As can be seen, in the embodiments of this application, decanoic acid and stearic acid are mixed to obtain decanoic acid-stearic acid, and tetraethyl orthosilicate and anhydrous ethanol are mixed to obtain a silicic acid solution. Decanoic acid-stearic acid is added to the silicic acid solution to obtain a first core-shell structure. This facilitates the thorough mixing of decanoic acid and stearic acid, so that the core of the first core-shell structure has a more suitable phase transition temperature, which helps to regulate the ambient temperature and maintain its stability. At the same time, it facilitates the thorough mixing of decanoic acid-stearic acid and silicic acid solution, forming a first core-shell structure with strong encapsulation. In actual use, this helps to reduce the leakage of the core material, reduce the loss of the core material, and reduce the maintenance cost of energy-saving ceramic tiles.

[0063] In one embodiment, the phase change material further includes a second core-shell structure, wherein the core of the second core-shell structure is made of paraffin wax, and the outer shell of the second core-shell structure is made of silicon dioxide. The preparation of the phase change material further includes the following steps:

[0064] The paraffin wax is added to the silica solution to obtain the second core-shell structure.

[0065] Specifically, the mixing temperature range for paraffin wax and silicate solution can be between 50°C and 70°C, such as 55°C, 60°C, and 66°C, without limitation. Before adding paraffin wax, the pH of the silicate solution can be adjusted to a range of 10-12, for example, to approximately 11. The mixing time for paraffin wax and silicate solution can be between 4 hours and 6 hours, such as 4.5 hours, 5 hours, and 5.8 hours, without limitation. This facilitates thorough mixing of the paraffin wax and silicate solution, forming a second core-shell structure with strong encapsulation. In practical use, this helps reduce leakage and loss of the core material, thereby lowering the maintenance costs of energy-saving ceramic tiles.

[0066] As can be seen, in the embodiments of this application, paraffin is added to the silica solution to obtain a second core-shell structure. This helps to regulate the ambient temperature and maintain its stability. At the same time, it facilitates the thorough mixing of paraffin and silica solution, forming a second core-shell structure with strong encapsulation. In actual use, this helps to reduce the leakage of the core material, reduce the loss of the core material, and reduce the maintenance cost of energy-saving ceramic tiles.

[0067] In one embodiment, the method further includes the following steps:

[0068] Provide the fifth billet;

[0069] A pore-forming agent with a third pore size is added to the fifth blank to obtain a sixth blank;

[0070] The third, fourth, and sixth billets are calcined to form a first, third, and second layer disposed opposite to each other, wherein the third layer has a third pore structure.

[0071] Wherein, the moisture content of the fifth billet is greater than or equal to the moisture content of the first billet. For example, the moisture content of the first billet may be in the range of 6% to 7%, the moisture content of the second billet may be in the range of 5% to 6%, and the moisture content of the fifth billet may be in the range of 7% to 9%, without any limitation.

[0072] The pore size of the aforementioned third pore diameter ranges from 0.5 mm to 1 mm. A pore-forming agent with the third pore diameter can be prepared by drying, heat preservation, ball milling, and sieving animal and plant humic substances.

[0073] The mass ratio of the pore-forming agent with the first pore size, the pore-forming agent with the second pore size, and the pore-forming agent with the third pore size is within the range of (0.5~1.5):(5~8):(1~2). This helps to control the density of the first and second pore structures, ensuring the mechanical properties and durability of energy-saving ceramic tiles, and reducing the maintenance costs of energy-saving ceramic tiles.

[0074] Specifically, a first billet, a second billet, and a fifth billet are provided. A pore-forming agent with a first pore size, a pore-forming agent with a second pore size, and a pore-forming agent with a third pore size are added to the first billet, the second billet, and the fifth billet, respectively, to obtain a third billet, a fourth billet, and a sixth billet. During the calcination of the third billet, the fourth billet, and the sixth billet, the pore-forming agent vaporizes and decomposes as the ambient temperature rises, forming a first pore structure, a second pore structure, and a third pore structure in the third billet, the fourth billet, and the sixth billet. Simultaneously, the high temperature causes the third billet, the fourth billet, and the sixth billet to bond together, forming a connected first layer, a third layer, and a second layer, which are stacked sequentially.

[0075] Furthermore, the calcined first, third, and second layers can be acid-washed in an acetic acid solution. The concentration of the acetic acid solution can be 1-2 mol / L, and the acid-washing time can be 25-35 minutes, etc., without limitation. This removes small amounts of impurities that may have entered the first, third, and second layers during the calcination process, achieving a cleaning purpose. Furthermore, since the first, third, and second layers contain silicate materials, these materials undergo a certain etching reaction with the weak acid, which increases the roughness of the energy-saving ceramic tile. This improves the bonding strength between the energy-saving ceramic tile and walls, mortar, and other materials, reducing the maintenance cost of the energy-saving ceramic tile.

[0076] After wiping the first, third, and second layers dry following acid pickling, apply a water glass solution to the side of the first layer furthest from the third layer and allow it to dry. The modulus of the water glass solution can be in the range of 0.5 to 0.8. Because the water glass solution contains abundant -Si- groups, which have strong adsorption capacity, it helps improve the bonding strength between the energy-saving ceramic tiles and walls, mortar, and other materials, preventing the tiles from detaching and reducing maintenance costs.

[0077] The dried first, third, and second layers are placed under negative pressure, and phase change material is filled into the first pore structure to obtain the above-mentioned energy-saving ceramic brick.

[0078] As can be seen, in the embodiments of this application, a fifth blank is provided, and a pore-forming agent with a third pore size is added to the fifth blank to obtain a sixth blank. The third blank, the fourth blank, and the sixth blank are calcined to form a first layer, a third layer, and a second layer arranged opposite to each other. The third layer has a third pore structure, which on the one hand helps to increase the durability of energy-saving ceramic tiles, and at the same time, it helps to store energy by absorbing or releasing heat through phase change materials, which helps to maintain the stability of ambient temperature and improve user comfort. On the other hand, it helps to improve the bonding strength between energy-saving ceramic tiles and walls, mortar, and other objects, prevent energy-saving ceramic tiles from falling off, and reduce the maintenance cost of energy-saving ceramic tiles.

[0079] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, and such improvements and refinements are also considered to be within the protection scope of this application.

Claims

1. An energy-saving ceramic brick, characterized in that, The energy-saving ceramic brick includes a first layer and a second layer arranged opposite to each other. The first layer has a first pore structure, and the second layer has a second pore structure. The pore size of the first pore structure is different from that of the second pore structure. The first pore structure is filled with a phase change material. The phase change material includes a first core-shell structure. The core of the first core-shell structure is made of decanoic acid-stearic acid, and the outer shell of the first core-shell structure is made of silicon dioxide. The mass ratio of the mixture of decanoic acid and stearic acid is in the range of (60~90):(10~40).

2. The energy-saving ceramic brick according to claim 1, characterized in that, The phase change material further includes a second core-shell structure, wherein the core of the second core-shell structure is made of paraffin wax and the outer shell of the second core-shell structure is made of silicon dioxide.

3. The energy-saving ceramic brick according to claim 1, characterized in that, The energy-saving ceramic brick also includes a third layer located between the first layer and the second layer. The third layer has a third pore structure, wherein the pore size of the first pore structure is a first pore size, the pore size of the second pore structure is a second pore size, and the pore size of the third pore structure is a third pore size. The first aperture is greater than or equal to the second aperture, and the third aperture is greater than or equal to the second aperture and less than or equal to the first aperture.

4. The energy-saving ceramic brick according to claim 3, characterized in that, The first aperture has a diameter range of 1 mm to 5 mm, the second aperture has a diameter range of 0.05 mm to 0.5 mm, and the third aperture has a diameter range of 0.5 mm to 1 mm.

5. A method for manufacturing energy-saving ceramic tiles, characterized in that, Includes the following steps: Provide the first billet and the second billet; A pore-forming agent with a first pore size and a pore-forming agent with a second pore size are added to the first billet and the second billet, respectively, to obtain a third billet and a fourth billet; The third and fourth billets are calcined to form a first layer and a second layer disposed opposite to each other, wherein the first layer has a first pore structure and the second layer has a second pore structure; Preparation of phase change materials; The phase change material is filled into the first porous structure; The phase change material includes a first core-shell structure, wherein the core of the first core-shell structure is made of decanoic acid-stearic acid, and the outer shell of the first core-shell structure is made of silicon dioxide. The preparation of the phase change material includes the following steps: Decanoic acid and stearic acid are mixed to obtain the decanoic acid-stearic acid; A silicic acid solution is obtained by mixing tetraethyl orthosilicate and anhydrous ethanol. The decanoic acid-stearic acid was added to the silicic acid solution to obtain the first core-shell structure; The mass ratio of the mixture of decanoic acid and stearic acid is in the range of (60~90):(10~40).

6. The manufacturing method according to claim 5, characterized in that, The phase change material further includes a second core-shell structure, wherein the core of the second core-shell structure is made of paraffin wax, and the outer shell of the second core-shell structure is made of silicon dioxide. The preparation of the phase change material further includes the following steps: The paraffin wax is added to the silica solution to obtain the second core-shell structure.

7. The manufacturing method according to claim 5, characterized in that, The method further includes the following steps: Provide the fifth billet; A pore-forming agent with a third pore size is added to the fifth blank to obtain a sixth blank; The third, fourth, and sixth billets are calcined to form a first, third, and second layer disposed opposite to each other, wherein the third layer has a third pore structure.

8. The manufacturing method according to claim 5, characterized in that, The mass ratio of the pore-forming agent with the first pore size to the pore-forming agent with the second pore size is the ratio of a first value range to a second value range, wherein the first value range is between 0.5 and 1.5, and the second value range is between 5 and 8.

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