A nano-modified silicon-magnesia brick heat insulation structure
By setting a combined structure of a thermal insulation coating, a self-cleaning coating, and a surface functional layer on nano-modified silicon molybdenum bricks, the problems of insufficient thermal insulation performance and self-cleaning ability in the prior art are solved, achieving efficient heat barrier and long-term stability, and broadening the application scenarios.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU JUN YAO WEAR-RESISTING REFRACTORY CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-05-29
AI Technical Summary
Existing nano-modified silicon-molybdenum red bricks rely on a single matrix structure for thermal insulation, lack surface functional coatings, have weak solar radiation reflection and self-cleaning capabilities, are prone to thermal bridging with traditional masonry methods, and have an increased thermal conductivity after absorbing water in humid environments. Furthermore, it is difficult to balance strength and thermal insulation performance.
It adopts a combination structure of a heat insulation coating, a self-cleaning coating, and a surface functional layer. The heat insulation coating uses nano-alumina, the self-cleaning coating uses nano-zirconia, and the surface functional layer uses nano-titanium dioxide. It reflects solar radiation through light scattering effect, decomposes pollutants through photocatalysis, and forms an interlocking stacked structure between the coatings to reduce heat conduction. The groove design enhances the interlocking of brick joints and drainage.
It effectively reflects solar radiation, is self-cleaning and blocks water vapor and acidic gases, reduces heat transfer efficiency, maintains long-term functional stability, broadens application scenarios, and improves thermal insulation performance and strength.
Smart Images
Figure CN224300263U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of silicon-molybdenum red bricks, and particularly relates to a heat insulation structure of nano-modified silicon-molybdenum red bricks. Background Technology
[0002] Nano-modified silicon-mullite red brick is a new type of building material. Based on silicon-mullite red brick, it is modified by nanotechnology to improve the brick's strength, durability, thermal insulation performance, etc., and has good application prospects.
[0003] Existing nano-modified silica-muscovite red bricks have several drawbacks in use, such as: reliance on a single matrix structure for thermal insulation, lack of surface functional coatings, weak solar radiation reflection and self-cleaning capabilities, and the tendency to form thermal bridges using traditional masonry methods, leading to a decline in overall thermal insulation performance. Furthermore, their thermal conductivity increases after absorbing water in humid environments, and it is difficult to balance strength and thermal insulation performance simultaneously. Therefore, we propose a thermal insulation structure for nano-modified silica-muscovite red bricks. Utility Model Content
[0004] The purpose of this invention is to provide a heat insulation structure for nano-modified silicon molybdenum bricks to solve the problems mentioned in the background art.
[0005] In view of this, the present invention provides a heat insulation structure of nano-modified silica-muzzle red brick, comprising a silica-muzzle red brick matrix, and further comprising:
[0006] A heat insulation coating is provided on the periphery of the silicon-muzzle red brick substrate. A self-cleaning coating is provided on the periphery of the heat insulation coating. A surface functional layer is provided on the periphery of the self-cleaning coating. Several grooves are provided on the top of the silicon-muzzle red brick substrate.
[0007] In this technical solution, when external heat arrives, the surface functional layer first reflects most of the short-wave solar radiation through light scattering. Under illumination, it also decomposes surface contaminants through photocatalysis, achieving self-cleaning. The self-cleaning coating further enhances the reflection of solar radiation, especially in the near-infrared band, while blocking water vapor and acidic gases. After passing through these two layers, the heat enters the coating insulation layer. Its nanosheet layer stacked structure forms a tortuous heat conduction path, effectively reducing heat conduction efficiency and blocking long-wave heat radiation. When it reaches the silicon-molybdenum red brick matrix, the nano-modified and optimized structure inside the matrix reduces heat conduction. The groove at the top enhances the interlocking with the mortar, reduces the gaps between bricks, and guides rainwater out, preventing water absorption from increasing the thermal conductivity. The entire device effectively blocks heat transfer from three aspects—reflection, conduction, and convection—through the synergistic effect of each layer, while maintaining long-term functional stability.
[0008] In the above technical solution, the heat insulation layer is further described using a nano-alumina heat insulation coating.
[0009] In this technical solution, the nano-alumina thermal insulation coating has excellent high temperature resistance, with an operating temperature of ≤1200℃. It can continuously play a thermal insulation role in high temperature environments, ensuring the structural stability and thermal insulation effect of silicon-molybdenum red bricks under high temperature conditions, and broadening the application scenarios of red bricks.
[0010] In the above technical solution, the self-cleaning coating further utilizes a nano-zirconia reflective coating.
[0011] In this technical solution, the nano-zirconia reflective coating is a functional coating with 20-50nm zirconia nanoparticles as its core component. It efficiently reflects near-infrared radiation in the 700-2500nm band through the Mie scattering effect, reducing heat absorption on the brick surface and lowering the surface temperature by 5-8℃. Its 10μm thick porous structure further optimizes the reflection efficiency through multiple scattering and forms a dense barrier to block water vapor, acidic gases, and dust, protecting the inner nano-alumina insulation layer and extending its service life. The coating is prepared by spraying or sol-gel method and forms chemical bonds with the upper and lower layers. It has both high temperature resistance and hydrophilicity. Together with the outer titanium dioxide coating, it achieves an integrated function of "reflection, protection, and self-cleaning". It is suitable for building exterior walls, industrial kilns, and other scenarios, significantly improving the reliability and environmental adaptability of the thermal insulation structure.
[0012] In the above technical solution, the surface functional layer is further described using a nano-titanium dioxide coating.
[0013] In this technical solution, the surface functional layer reduces heat absorption on the brick surface through scattering and diffuse reflection, which can lower the brick surface temperature by 3-5℃ in summer, reducing the heat load of the coating insulation layer. Degraded pollutant molecules are washed away by rainwater, avoiding the accumulation of pollutants on the brick surface, especially in the grooves, and ensuring the long-term stability of the interlocking strength between the brick and mortar during construction. This not only improves the efficiency of photocatalytic reaction, but also reduces water vapor adsorption through surface energy regulation to achieve moisture-proof function.
[0014] In the above technical solution, the cross-section of the groove is trapezoidal.
[0015] In this technical solution, the groove cross-section is designed as an isosceles trapezoid with an upper base of 5-10mm, a lower base of 8-15mm, and a depth of 3-6mm. Compared with a rectangular groove, this structure can reduce stress concentration and facilitate the uniform distribution of coating material in the groove, avoiding coating accumulation or defects at right-angle corners.
[0016] In the above technical solution, the thickness of the heat insulation coating is μm, the thickness of the self-cleaning coating is 10μm, and the thickness of the surface functional layer is 5μm.
[0017] In this technical solution, the coating insulation layer serves as the main insulation layer. Its thickness meets the thermal resistance requirements while avoiding excessive weight increase. The self-cleaning coating provides sufficient pollutant blocking ability and surface functional support. The surface functional layer, as an ultra-thin functional layer, reduces material consumption while achieving specific performance. The thickness ratio of the three layers is 3:2:1, which can reduce the overall structure heat flux density by 22% and improve the inter-coating bonding force by 18%.
[0018] In the above technical solution, the heat insulation layer is further formed in situ on the surface of the silicon-molybdenum brick substrate by sol-gel method, the self-cleaning coating is attached to the surface of the heat insulation layer by spraying process, and the surface functional layer is covered on the surface of the self-cleaning coating by impregnation process.
[0019] In this technical solution, the heat insulation coating and the silicon-molybdenum red brick substrate are tightly bonded with a bonding strength of not less than 5MPa, which can effectively adhere to the substrate surface to play a heat insulation role. The self-cleaning coating and the heat insulation coating have good bonding force to ensure their stability and functionality. The surface functional layer and the bottom coating work together to improve the overall performance of the brick.
[0020] The beneficial effects of this utility model are:
[0021] The thermal insulation structure of this nano-modified silicon-muscovite red brick has the following characteristics: when external heat arrives, the surface functional layer first reflects most of the short-wave solar radiation through light scattering effect, and under light, it decomposes surface pollutants through photocatalysis, achieving self-cleaning. The self-cleaning coating further enhances the reflection of solar radiation, especially in the near-infrared band, while blocking water vapor and acidic gases. After passing through these two layers, the heat enters the coating insulation layer, where its nanosheet layered stacked structure forms a tortuous heat conduction path, effectively reducing heat conduction efficiency and blocking long-wave heat radiation. When it reaches the silicon-muscovite red brick matrix, the nano-modified and optimized structure inside the matrix reduces heat conduction, and the groove at the top enhances the interlocking with the mortar, reducing the gaps between bricks and guiding rainwater out, preventing water absorption and an increase in thermal conductivity. The entire device effectively blocks heat transfer from three aspects—reflection, conduction, and convection—through the synergistic effect of each layer, while maintaining long-term functional stability. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model.
[0024] The markings in the diagram are as follows:
[0025] 1. Silicon-molybdenum red brick substrate; 2. Coated heat insulation layer; 3. Self-cleaning coating; 4. Surface functional layer; 5. Groove. Detailed Implementation
[0026] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.
[0027] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0028] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0029] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0030] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples. Example 1
[0031] Please see Figure 1 - Figure 2 As shown, this embodiment provides a thermal insulation structure of nano-modified silica-muzzle red brick, including a silica-muzzle red brick matrix 1, and further comprising:
[0032] A heat insulation coating 2 is provided on the periphery of the silicon-muzzle red brick substrate 1. A self-cleaning coating 3 is provided on the periphery of the heat insulation coating 2. A surface functional layer 4 is provided on the periphery of the self-cleaning coating 3. Several grooves 5 are provided on the top of the silicon-muzzle red brick substrate 1.
[0033] When external heat arrives, the surface functional layer 4 first reflects most of the short-wave solar radiation through light scattering. Under illumination, it decomposes surface pollutants through photocatalysis, achieving self-cleaning. The self-cleaning coating 3 further enhances the reflection of solar radiation, especially in the near-infrared band, while blocking water vapor and acidic gases. After passing through these two layers, the heat enters the coating insulation layer 2. Its nanosheet layer stacked structure forms a tortuous heat conduction path, effectively reducing heat conduction efficiency and blocking long-wave heat radiation. When it reaches the silicon-molybdenum red brick substrate 1, the nano-modified and optimized structure inside the substrate reduces heat conduction. The groove 5 at the top enhances the interlocking with the mortar, reduces the gaps between bricks, and guides rainwater out, preventing water absorption from increasing the thermal conductivity. The entire device effectively blocks heat transfer from three aspects: reflection, conduction, and convection through the synergistic effect of each layer, while maintaining long-term functional stability. Example 2
[0034] This embodiment provides a thermal insulation structure for nano-modified silicon-molybdenum bricks, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0035] In this embodiment, the heat insulation layer 2 uses a nano-alumina heat insulation coating.
[0036] Among them, the nano-alumina heat insulation coating has excellent high temperature resistance, with an operating temperature of ≤1200℃. It can continuously play a heat insulation role in high temperature environments, ensuring the structural stability and heat insulation effect of silicon-molybdenum red bricks under high temperature conditions, and broadening the application scenarios of red bricks. Example 3
[0037] This embodiment provides a thermal insulation structure for nano-modified silicon-molybdenum bricks, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0038] In this embodiment, the self-cleaning coating 3 uses a nano-zirconia reflective coating.
[0039] Among them, the nano-zirconia reflective coating is a functional coating with 20-50nm zirconia nanoparticles as the core component. It efficiently reflects near-infrared radiation in the 700-2500nm band through the Mie scattering effect, reducing heat absorption on the brick surface and lowering the surface temperature by 5-8℃. Its 10μm thick porous structure further optimizes the reflection efficiency through multiple scattering and forms a dense barrier to block water vapor, acidic gases and dust, protect the inner nano-alumina heat insulation layer and extend its service life. The coating is prepared by spraying or sol-gel method and forms chemical bonds with the upper and lower layers. It has both high temperature resistance and hydrophilicity. Together with the outer titanium dioxide coating, it achieves the integrated function of "reflection, protection and self-cleaning". It is suitable for building exterior walls, industrial kilns and other scenarios, and significantly improves the reliability and environmental adaptability of the heat insulation structure. Example 4
[0040] This embodiment provides a thermal insulation structure for nano-modified silicon-molybdenum bricks, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0041] In this embodiment, the surface functional layer 4 uses a nano-titanium dioxide coating.
[0042] Among them, the surface functional layer 4 reduces the heat absorption of the brick surface through scattering and diffuse reflection, which can reduce the brick surface temperature by 3-5℃ in summer, reduce the heat load of the coating insulation layer 2, and the degraded pollutant molecules are washed away by rainwater, avoiding the accumulation of pollutants on the brick surface, especially in the groove 55, and ensuring the long-term stability of the interlocking strength between the brick and the mortar during construction. It not only improves the efficiency of photocatalytic reaction, but also reduces water vapor adsorption through surface energy regulation to achieve moisture-proof function. Example 5
[0043] This embodiment provides a thermal insulation structure for nano-modified silicon-molybdenum bricks, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0044] In this embodiment, the cross-section of the groove 5 is trapezoidal.
[0045] The groove 5 is designed as an isosceles trapezoid with an upper base of 5-10mm, a lower base of 8-15mm, and a depth of 3-6mm. Compared with a rectangular groove, this structure can reduce stress concentration and facilitate the uniform distribution of coating material in the groove, avoiding coating accumulation or defects at right-angle corners. Example 6
[0046] This embodiment provides a thermal insulation structure for nano-modified silicon-molybdenum bricks, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0047] In this embodiment, the thickness of the heat insulation layer 2 is 15 μm, the thickness of the self-cleaning coating 3 is 10 μm, and the thickness of the surface functional layer 4 is 5 μm.
[0048] Among them, the coating insulation layer 2 is the main insulation layer. The thickness meets the thermal resistance requirements while avoiding excessive weight increase. The self-cleaning coating 3 provides sufficient pollutant blocking ability and surface function support. The surface function layer 4 is an ultra-thin function layer that reduces material consumption while achieving specific performance. The thickness ratio of the three layers is 3:2:1, which can reduce the overall structure heat flux density by 22% and improve the bonding force between coatings by 18%. Example 7
[0049] This embodiment provides a thermal insulation structure for nano-modified silicon-molybdenum bricks, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0050] In this embodiment, the heat insulation layer 2 is generated in situ on the surface of the silicon-molybdenum brick substrate 1 by the sol-gel method, the self-cleaning coating 3 is attached to the surface of the heat insulation layer 2 by the spraying process, and the surface functional layer 4 is covered on the surface of the self-cleaning coating 3 by the impregnation process.
[0051] Among them, the heat insulation layer 2 and the silicon-molybdenum red brick substrate 1 are tightly bonded with a bonding strength of not less than 5MPa, which can effectively adhere to the surface of the substrate to play a heat insulation role. The self-cleaning coating 3 has a good bonding force with the heat insulation layer 2, ensuring its stability and functionality. The surface functional layer 4 works together with the bottom coating to improve the overall performance of the brick.
[0052] Working principle: When external heat arrives, the surface functional layer 4 first reflects most of the short-wave solar radiation through light scattering effect, and under illumination, it decomposes surface pollutants through photocatalysis to achieve self-cleaning. The self-cleaning coating 3 further enhances the reflection of solar radiation, especially in the near-infrared band, while blocking water vapor and acidic gases. After passing through these two layers, the heat enters the coating insulation layer 2. Its nanosheet layer stacked structure forms a tortuous heat conduction path, effectively reducing heat conduction efficiency and blocking long-wave heat radiation. When it reaches the silicon-molybdenum red brick substrate 1, the nano-modified and optimized structure inside the substrate reduces heat conduction. The groove 5 at the top enhances the interlocking with the mortar, reduces the gap between brick joints, and guides rainwater out, avoiding water absorption that would increase the thermal conductivity. The entire device effectively blocks heat transfer from three aspects: reflection, conduction, and convection through the synergistic effect of each layer, while maintaining long-term functional stability.
[0053] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.
Claims
1. A thermal insulation structure of nano-modified silica-muzzle red brick, comprising a silica-muzzle red brick matrix (1), characterized in that, Also includes: A heat insulation coating (2) is provided on the periphery of the silicon-molybdenum brick substrate (1). A self-cleaning coating (3) is provided on the periphery of the heat insulation coating (2). A surface functional layer (4) is provided on the periphery of the self-cleaning coating (3). Several grooves (5) are provided on the top of the silicon-molybdenum brick substrate (1).
2. The thermal insulation structure of a nano-modified silicon-molybdenum brick according to claim 1, characterized in that, The heat insulation layer (2) uses a nano-alumina heat insulation coating.
3. The thermal insulation structure of a nano-modified silicon-molybdenum brick according to claim 2, characterized in that, The self-cleaning coating (3) uses a nano-zirconia reflective coating.
4. The thermal insulation structure of a nano-modified silicon-molybdenum brick according to claim 3, characterized in that, The surface functional layer (4) is coated with nano-titanium dioxide.
5. The thermal insulation structure of a nano-modified silicon-molybdenum brick according to claim 4, characterized in that, The cross-section of the groove (5) is trapezoidal.
6. The thermal insulation structure of a nano-modified silicon-molybdenum brick according to claim 5, characterized in that, The thickness of the heat insulation layer (2) is 15 μm, the thickness of the self-cleaning coating (3) is 10 μm, and the thickness of the surface functional layer (4) is 5 μm.
7. The thermal insulation structure of a nano-modified silicon-molybdenum brick according to claim 6, characterized in that, The heat insulation layer (2) is generated in situ on the surface of the silicon-molybdenum brick substrate (1) by the sol-gel method. The self-cleaning coating (3) is attached to the surface of the heat insulation layer (2) by the spraying process. The surface functional layer (4) is covered on the surface of the self-cleaning coating (3) by the impregnation process.