Microcrystalline glass composite ceramic tile

Abstract

The utility model discloses a kind of microcrystalline glass composite vitrified board, including board body, multiple groups of taper hole being arranged at the back of board body and back bolt with diffuser ring.The utility model, by setting the strengthening layer of aluminium borate whisker three-dimensional staggered net, the stress crack propagation path in drilling process is effectively blocked, the problem of radial crack of microcrystalline glass surface layer when drilling caused by the difference of interlayer thermal expansion coefficient of traditional structure is solved, epoxy resin-based nanometer ceramic composite coating with specific elastic modulus and thermal expansion coefficient is used, the high degree of contact of back bolt diffuser ring and hole wall is realized, the problem of diffuser ring contact area drop caused by insufficient hole precision of traditional process is solved, compared with punching, the size control of epoxy resin-based nanometer ceramic composite coating is more easy, and practicality is high.

Description

Technical Field

[0001] This utility model relates to the field of building decoration materials technology, and in particular to a microcrystalline glass composite vitrified sheet. Background Technology

[0002] Microcrystalline glass decorative panels possess excellent properties such as high strength, high gloss, corrosion resistance, and wear resistance. For example, the microcrystalline glass composite vitrified panel proposed in existing technology achieves a tight bond between ceramics and microcrystalline glass, resulting in a next-generation product with high strength, high gloss, moderate cost, and good corrosion and wear resistance. Its composition consists of a bottom layer made of vitrified granules pressed together from bottom to top, and a top layer of microcrystalline glass material, which are then combined to form the composite material.

[0003] When applied to curtain wall projects, it needs to be fixed by drilling holes with back bolts. However, the existing technology has significant problems: structural defects: drilling can easily cause radial cracks in the microcrystalline glass layer; precision bottleneck: the hole position needs to be precisely controlled, otherwise it will lead to insufficient contact area of ​​the diffuser ring, reducing the pull-out resistance.

[0004] Therefore, it is necessary to optimize and improve the structure of microcrystalline glass composite vitrified sheets. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a microcrystalline glass composite vitrified sheet.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a microcrystalline glass composite vitrified sheet, comprising a sheet body, multiple sets of conical holes disposed on the back side of the sheet body, and a back bolt with a pressure-diffusing ring. The sheet body is composed of a surface layer, a first base layer, and a second base layer arranged sequentially from front to back. The surface layer is microcrystalline glass, and the first and second base layers are both ceramic. A reinforcing layer for improving structural strength is disposed between the first and second base layers. The reinforcing layer is a three-dimensional interlaced network of aluminum borate whiskers. A composite coating for improving the structural strength of the periphery of the hole is disposed on the inner wall of the conical hole. The composite coating is an epoxy resin-based nano-ceramic.

[0007] As a further description of the above technical solution:

[0008] The surface layer has a thickness of 2.5-3.5 mm, the first base layer has a thickness of 4-6 mm and a porosity of ≤0.8%, the second base layer has a thickness of 7-9 mm and a porosity of 15-25%, and the reinforcing layer has a thickness of 1.5-2.5 mm.

[0009] Microcrystalline glass maintains a Mohs hardness of over 6.5 on the panel surface, meeting the scratch resistance requirements of curtain walls. The first substrate bears the main structural load, and through the pores within the first and second substrates, the overall thermal expansion coefficient of the panel is reduced from 8×10⁻⁶ on the surface layer while maintaining the decorative appearance of the surface layer. -6 / ℃ Smooth transition to the base layer 6×10 -6 / ℃, through the above structure, the problem of interlayer stress concentration caused by temperature changes is effectively alleviated, and the structural failure of the board is avoided under the temperature difference between day and night.

[0010] As a further description of the above technical solution:

[0011] The conical hole is drilled from the second base layer towards the surface layer, and the bottom of the conical hole terminates at a depth of 1-2 mm inside the first base layer.

[0012] The high porosity of the second base layer is used to absorb the impact energy of the drill bit, while ensuring that the reinforcing layer 103 can completely cover the stress concentration area at the end of the borehole.

[0013] As a further description of the above technical solution:

[0014] The composite coating has a thickness of 80-150 μm, an elastic modulus of 1-3 GPa, and a coefficient of thermal expansion of (7-9) × 10⁻⁶. -6 / ℃.

[0015] The composite coating can both fill the microscopic defects in the drill hole and buffer the impact load during back bolt installation.

[0016] As a further description of the above technical solution:

[0017] The surface of the composite coating is ground to form a conical surface that matches the diffuser ring of the back bolt, with the cone angle tolerance controlled within ±0.5°.

[0018] As a further description of the above technical solution:

[0019] The contact area between the diffuser ring of the back bolt and the conical surface of the composite coating is ≥85%.

[0020] The composite coating ensures that the load of the diffuser ring is evenly distributed to the entire inner wall of the conical hole, avoiding excessive local stress.

[0021] As a further description of the above technical solution:

[0022] The minimum distance between the center axis of the tapered hole and the edge of the plate is not less than 50mm.

[0023] This setup avoids the risk of panel chipping due to drilling positions being too close to the edges, thus maintaining the overall mechanical performance of the curtain wall unit.

[0024] This utility model has the following beneficial effects:

[0025] 1. Compared with existing technologies, this microcrystalline glass composite vitrified sheet effectively blocks the propagation path of stress cracks during drilling by setting a reinforcing layer of three-dimensional interlaced aluminum borate whiskers, thus solving the problem of radial cracks on the microcrystalline glass surface during drilling caused by the difference in thermal expansion coefficients between layers in traditional structures.

[0026] 2. Compared with existing technologies, this microcrystalline glass composite vitrified sheet uses an epoxy resin-based nano-ceramic composite coating with specific elastic modulus and thermal expansion coefficient, which achieves a high degree of fit between the back bolt diffuser ring and the hole wall. This solves the problem of reduced contact area of ​​the diffuser ring caused by insufficient hole position accuracy in traditional processes. The size control of the epoxy resin-based nano-ceramic composite coating is easier than that of drilling, making it highly practical. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a microcrystalline glass composite vitrified sheet material proposed in this utility model;

[0028] Figure 2 This utility model proposes a microcrystalline glass composite vitrified sheet material. Figure 1 A magnified view of a section at point A in the middle;

[0029] Figure 3 This is a partial schematic diagram of the back structure of a microcrystalline glass composite vitrified sheet material proposed in this utility model.

[0030] Figure 4 This is a partial cross-sectional view of the internal structure of a microcrystalline glass composite vitrified sheet material proposed in this utility model.

[0031] Legend:

[0032] 1. Sheet body; 101. Surface layer; 102. First base layer; 103. Reinforcing layer; 104. Second base layer; 2. Conical hole; 3. Composite coating. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figures 1 to 4The present invention provides a microcrystalline glass composite vitrified sheet material: including a sheet body 1, multiple sets of conical holes 2 disposed on the back of the sheet body 1, and a back bolt with a pressure diffuser ring;

[0035] To achieve the dual functions of scratch resistance and thermal stress buffering on the curtain wall surface, the panel body 1 is composed of a surface layer 101, a first base layer 102, and a second base layer 104 arranged sequentially from front to back. The surface layer 101 is made of microcrystalline glass with a thickness of 2.5-3.5 mm. The first base layer 102 is made of ceramic with a thickness of 4-6 mm and a porosity of ≤0.8%. The second base layer 104 is made of ceramic with a thickness of 7-9 mm and a porosity of 15-25%.

[0036] Microcrystalline glass maintains a Mohs hardness of over 6.5 on the panel surface, meeting the scratch resistance requirements of the curtain wall. The first base layer 102 bears the main structural load. Through the pores inside the first base layer 102 and the second base layer 104, the overall thermal expansion coefficient gradient of the panel is reduced from 8 × 10⁻⁶ for the surface layer 101 while maintaining the decorative appearance of the surface layer 101. -6 / ℃ Smooth transition to the base layer 6×10 -6 / ℃, through the above structure, the problem of interlayer stress concentration caused by temperature changes is effectively alleviated, and the structural failure of the board is avoided under the temperature difference between day and night;

[0037] To block the propagation path of borehole stress waves, a reinforcing layer 103 is provided between the first base layer 102 and the second base layer 104 to improve the structural strength. The reinforcing layer 103 is a three-dimensional interlaced network of aluminum borate whiskers, and the thickness of the reinforcing layer 103 is 1.5-2.5 mm.

[0038] The three-dimensional interlaced network of aluminum borate whiskers forms a multi-level energy dissipation mechanism during drilling, dispersing concentrated stress into multiple micro-stress units;

[0039] To compensate for borehole size deviations and improve stress distribution, a composite coating 3 is provided on the inner wall of the conical borehole 2 to enhance the structural strength of the borehole periphery. The composite coating 3 is an epoxy resin-based nano-ceramic with a thickness of 80-150 μm, an elastic modulus of 1-3 GPa, and a coefficient of thermal expansion of (7-9) × 10⁻⁶. -6 / ℃;

[0040] The composite coating 3 can both fill the micro-defects in the drill hole and buffer the impact load during the installation of the back bolt.

[0041] To ensure precise fit of the mechanical interlock, the surface of the composite coating 3 is ground to form a conical surface that matches the diffuser ring of the back bolt. The cone angle tolerance is controlled within ±0.5°, and the contact area between the diffuser ring of the back bolt and the conical surface of the composite coating 3 is ≥85%.

[0042] The above structure ensures that the load of the diffuser ring is evenly distributed to the entire inner wall of the conical hole 2, thus avoiding excessive local stress.

[0043] To optimize the stability of the drilling process, the conical hole 2 is drilled from the second base layer 104 toward the surface layer 101, and the bottom of the conical hole 2 terminates at a depth of 1-2 mm inside the first base layer 102.

[0044] Through the above structure, the high porosity of the second base layer 104 is used to absorb the impact energy of the drill bit, while ensuring that the reinforcing layer 103 can completely cover the stress concentration area at the end of the borehole.

[0045] To ensure the integrity of the edge structure, the minimum distance between the center axis of the conical hole 2 and the edge of the plate is not less than 50mm;

[0046] The above structure avoids the risk of panel chipping caused by drilling too close to the edge, thus maintaining the overall mechanical performance of the curtain wall unit.

[0047] Working principle: Microcrystalline glass maintains the Mohs hardness of the panel surface above 6.5, meeting the scratch resistance requirements of the curtain wall; the first base layer 102 bears the main structural load, and through the pores set inside the first base layer 102 and the second base layer 104, while maintaining the decorative appearance of the surface layer 101, the overall thermal expansion coefficient gradient of the panel is reduced from 8×10 of the surface layer 101. -6 / ℃ Smooth transition to the base layer 6×10 -6 / ℃, through the above structure, the problem of interlayer stress concentration caused by temperature changes is effectively alleviated, and the structural failure of the panel under the temperature difference between day and night is avoided. The three-dimensional interlaced network of aluminum borate whiskers forms a multi-level energy dissipation mechanism during the drilling process, dispersing the concentrated stress into multiple micro-stress units; the composite coating 3 can not only fill the micro-defects of the drill hole, but also buffer the impact load during the installation of the back bolt; the composite coating 3 makes the load of the pressure diffuser ring evenly transferred to the entire inner wall of the cone hole 2, avoiding local stress exceeding the limit, and using the high porosity of the second base layer 104 to absorb the impact energy of the drill bit, while ensuring that the reinforcing layer 103 can completely cover the stress concentration area at the end of the drill hole; the minimum distance between the central axis of the cone hole 2 and the edge of the panel is not less than 50mm, avoiding the risk of panel edge breakage due to the drilling position being too close to the edge, and maintaining the overall mechanical performance of the curtain wall unit.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A microcrystalline glass composite vitrified sheet, characterized in that: The plate body (1) includes a plate body (1), multiple sets of conical holes (2) disposed on the back of the plate body (1) and a back bolt with a pressure-diffusing ring. The plate body (1) is composed of a surface layer (101), a first base layer (102) and a second base layer (104) arranged in a front-to-back sequence. The surface layer (101) is microcrystalline glass. The first base layer (102) and the second base layer (104) are both ceramic. A reinforcing layer (103) for improving structural strength is disposed between the first base layer (102) and the second base layer (104). The reinforcing layer (103) is a three-dimensional interlaced network of aluminum borate whiskers. A composite coating (3) for improving the structural strength of the hole periphery is disposed on the inner wall of the conical hole (2). The composite coating (3) is an epoxy resin-based nano-ceramic.

2. The microcrystalline glass composite vitrified sheet according to claim 1, characterized in that: The surface layer (101) has a thickness of 2.5-3.5 mm, the first base layer (102) has a thickness of 4-6 mm and a porosity of ≤0.8%, the second base layer (104) has a thickness of 7-9 mm and a porosity of 15-25%, and the reinforcing layer (103) has a thickness of 1.5-2.5 mm.

3. The microcrystalline glass composite vitrified sheet according to claim 1, characterized in that: The conical hole (2) is drilled from the second base layer (104) toward the surface layer (101), and the bottom of the conical hole (2) terminates at a depth of 1-2 mm inside the first base layer (102).

4. The microcrystalline glass composite vitrified sheet according to claim 1, characterized in that: The composite coating (3) has a thickness of 80-150 μm, an elastic modulus of 1-3 GPa, and a coefficient of thermal expansion of (7-9) × 10⁻⁶. -6 / ℃.

5. The microcrystalline glass composite vitrified sheet according to claim 1, characterized in that: The surface of the composite coating (3) is ground to form a conical surface that matches the diffuser ring of the back bolt, and the cone angle tolerance is controlled within ±0.5°.

6. The microcrystalline glass composite vitrified sheet according to claim 5, characterized in that: The contact area between the diffuser ring of the back bolt and the conical surface of the composite coating (3) is ≥85%.

7. The microcrystalline glass composite vitrified sheet according to claim 1, characterized in that: The minimum distance between the central axis of the conical hole (2) and the edge of the plate is not less than 50mm.

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