High-strength acid and alkali corrosion resistant composite panel for showcases

Abstract

The application relates to the technical field of plate materials, and discloses an acid and alkali corrosion resistant high-strength composite plate for showcases, which solves the problems of low strength, poor fire resistance and poor acid and alkali corrosion resistance of the existing composite plate for showcases, and comprises a composite plate body, wherein the composite plate body is composed of a combined high-strength core plate, an aluminum alloy frame, a fireproof protective layer, an acid and alkali corrosion resistant layer and a high-density polyethylene surface layer; the aluminum alloy frame is coated on the side edges of the combined high-strength core plate; the fireproof protective layer is coated on the combined high-strength core plate and the aluminum alloy frame; the acid and alkali corrosion resistant layer is coated on the fireproof protective layer; the high-density polyethylene surface layer is coated on the acid and alkali corrosion resistant layer; and the combined high-strength core plate, the aluminum alloy frame, the fireproof protective layer, the acid and alkali corrosion resistant layer and the high-density polyethylene surface layer are all bonded and connected through resin glue layers; through the composite plate for showcases, the overall strength can be improved, and the composite plate has good fire resistance and acid and alkali corrosion resistance.

Description

Technical Field

[0001] This invention belongs to the field of panel technology, specifically a high-strength composite panel for display cases that is resistant to acid and alkali corrosion. Background Technology

[0002] Display cases are cabinets used to display items. They are usually made of multiple panels. Since the items displayed in display cases are mostly valuable, the overall strength of the display case is particularly important. Improving the strength can provide better protection for the displayed items. However, the existing display case panels usually have a relatively simple structure, making it difficult to effectively improve the strength. In addition, the existing display case panels have poor fire resistance and acid and alkali corrosion resistance. When the display case is used to display special items, it may be damaged. Moreover, in the event of a fire, it is difficult to provide fire protection for the displayed items, resulting in poor safety and stability. Therefore, this application proposes a high-strength composite panel for display cases that is resistant to acid and alkali corrosion. Summary of the Invention

[0003] In view of the above situation and to overcome the defects of the prior art, the present invention provides a high-strength composite board for display cases that is resistant to acid and alkali corrosion, which effectively solves the problems of low strength, poor fire resistance and acid and alkali corrosion resistance of existing composite boards for display cases.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a high-strength composite board for display cases that is resistant to acid and alkali corrosion, comprising a composite board body, wherein the composite board body is composed of a combined high-strength core board, an aluminum alloy frame, a fire-resistant protective layer, an acid and alkali corrosion-resistant layer, and a high-density polyethylene surface layer. The aluminum alloy frame covers the sides of the combined high-strength core board, the fire-resistant protective layer covers the combined high-strength core board and the aluminum alloy frame, the acid and alkali corrosion-resistant layer covers the fire-resistant protective layer, and the high-density polyethylene surface layer covers the acid and alkali corrosion-resistant layer. The combined high-strength core board, the aluminum alloy frame, the fire-resistant protective layer, the acid and alkali corrosion-resistant layer, and the high-density polyethylene surface layer are all bonded together by a resin adhesive layer.

[0005] The composite high-strength core board consists of a wood substrate 1, a wood substrate 2, a reinforcing layer 1, a reinforcing layer 2, and a reinforcing layer 3. The reinforcing layer 1 is connected to the bottom of the wood substrate 1, the reinforcing layer 2 is connected between the wood substrate 1 and the wood substrate 2, and the reinforcing layer 3 is connected to the top of the wood substrate 2. The wood substrate 1, the wood substrate 2, the reinforcing layer 1, the reinforcing layer 2, and the reinforcing layer 3 are all bonded together by resin adhesive.

[0006] Preferably, the interior of the first wooden substrate has several transverse through holes, and transverse metal reinforcing ribs are interspersed inside the transverse through holes. The interior of the second wooden substrate has several longitudinal through holes, and several longitudinal metal reinforcing ribs are interspersed inside the longitudinal through holes. Chemical adhesive is filled between the transverse metal reinforcing ribs and the transverse through holes, and between the longitudinal metal reinforcing ribs and the longitudinal through holes. The transverse metal reinforcing ribs and the longitudinal metal reinforcing ribs are fixedly connected to the aluminum alloy frame by several bolts.

[0007] Preferably, the interior of the composite high-strength core board is provided with several auxiliary reinforcing supports I that match the transverse metal reinforcing ribs and several auxiliary reinforcing supports II that match the longitudinal metal reinforcing ribs.

[0008] Preferably, the combined high-strength core board has a plurality of mounting through holes 1 that match the auxiliary reinforcement support 1 and a plurality of mounting through holes 2 that match the auxiliary reinforcement support 2. The auxiliary reinforcement support 1 has a limiting through hole 1 that matches the transverse metal reinforcing rib, and the auxiliary reinforcement support 2 has a limiting through hole 2 that matches the longitudinal metal reinforcing rib.

[0009] Preferably, the sides of both the transverse and longitudinal metal reinforcing ribs are provided with several arc-shaped grooves, and arc-shaped anti-slip ribs are fixedly provided inside the arc-shaped grooves.

[0010] Preferably, both the transverse and longitudinal metal reinforcing ribs have weight-reducing through holes inside, and both ends of the transverse and longitudinal metal reinforcing ribs have snap-fit ​​grooves. Both ends of the weight-reducing through holes are provided with bolt mounting sleeves that match the bolts. One end of the bolt mounting sleeve is fixedly provided with several arc-shaped snap-fit ​​plates that match the snap-fit ​​grooves. The arc-shaped snap-fit ​​plates are installed inside the snap-fit ​​grooves and connected to them by several screws.

[0011] Preferably, the first reinforcement layer, the second reinforcement layer, and the third reinforcement layer are all woven from several composite reinforcing fiber bundles, and the first reinforcement layer, the second reinforcement layer, and the third reinforcement layer are all dense mesh structures.

[0012] Preferably, the composite reinforcing fiber bundle is composed of carbon fiber, silicon carbide fiber, graphite fiber, metal fiber and heterocyclic polyamide fiber twisted together.

[0013] Preferably, the fire-resistant protective layer is composed of a first fire-resistant base layer and a second fire-resistant base layer. The first fire-resistant base layer and the second fire-resistant base layer are connected in a staggered manner. Both the first fire-resistant base layer and the second fire-resistant base layer are woven from several transverse strip braided strips and several longitudinal strip braided strips. The transverse strip braided strips and the longitudinal strip braided strips are woven from polyphenylene sulfide fibers, aromatic polyamide surface chemically treated fibers, polyacrylonitrile pre-oxidized fibers, and basalt fibers.

[0014] Preferably, the acid and alkali erosion resistant layer is composed of an anti-erosion braided layer and a surface coating layer. The surface coating layer is sprayed on the outer surface of the anti-erosion braided layer. The anti-erosion braided layer is composed of several thickened braided tapes and several thickened braided tapes. Both thickened braided tapes are woven from polytetrafluoroethylene fiber, polyvinylidene chloride fiber, aramid fiber, and ethylene-trifluorochloroethylene fiber.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] (1) In operation, by setting up a composite high-strength core board consisting of wood substrate 1, wood substrate 2, reinforcement layer 1, reinforcement layer 2 and reinforcement layer 3, its compressive strength, bending strength and tensile strength can be improved, thereby improving its overall strength. By setting up transverse metal reinforcing ribs, longitudinal metal reinforcing ribs, auxiliary reinforcement support 1, auxiliary reinforcement support 2 and composite reinforcing fiber bundles composed of carbon fiber, silicon carbide fiber, graphite fiber, metal fiber and heterocyclic polyamide fiber twisted together, its strength can be further improved.

[0017] (2) By setting up transverse strip braided belts and longitudinal strip braided belts made of polyphenylene sulfide fiber, aromatic polyamide surface chemically treated fiber, polyacrylonitrile pre-oxidized fiber and basalt fiber, the fire resistance and flame retardant performance of the composite board can be improved, thereby enabling the safe protection of the exhibits inside the display case.

[0018] (3) By setting up thickened braided strip body one and thickened braided strip body two, which are made of polytetrafluoroethylene fiber, polyvinylidene chloride fiber, aramid fiber and ethylene-trifluorochloroethylene fiber, the acid and alkali corrosion resistance of the composite board can be improved, thereby improving the adaptability of the display case, which can be used to display different types of items and improve its service life. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0020] In the attached diagram:

[0021] Figure 1 This is a schematic diagram of the high-strength composite panel for display cases that is resistant to acid and alkali corrosion, according to the present invention.

[0022] Figure 2 This is a partial cross-sectional view of the high-strength composite panel for display cases that is resistant to acid and alkali corrosion, as described in this invention.

[0023] Figure 3 This is a partial exploded view of the high-strength composite panel for display cases that is resistant to acid and alkali corrosion, as described in this invention.

[0024] Figure 4 This is a partial structural diagram of the high-strength composite panel for display cases that is resistant to acid and alkali corrosion, according to the present invention.

[0025] Figure 5 This is a schematic diagram of the auxiliary reinforcement support one and auxiliary reinforcement support two of the present invention;

[0026] Figure 6 This is a schematic diagram of the longitudinal metal reinforcing rib structure of the present invention;

[0027] Figure 7 For the present invention Figure 6 A magnified view of a portion of the image;

[0028] Figure 8 This is a schematic diagram of the reinforcement layer structure of the present invention;

[0029] Figure 9 This is a schematic diagram of the composite reinforced fiber bundle structure of the present invention;

[0030] Figure 10 This is a schematic diagram of the fire-resistant protective layer structure of the present invention;

[0031] Figure 11 This is a schematic diagram of the acid and alkali erosion resistant layer structure of the present invention;

[0032] In the diagram: 1. Composite board body; 2. Combined high-strength core board; 3. Aluminum alloy frame; 4. Fire-resistant protective layer; 5. Acid and alkali erosion resistant layer; 6. High-density polyethylene surface layer; 7. Resin adhesive layer; 8. Wood substrate one; 9. Wood substrate two; 10. Reinforcement layer one; 11. Reinforcement layer two; 12. Reinforcement layer three; 13. Horizontal through hole; 14. Horizontal metal reinforcing rib; 15. Longitudinal through hole; 16. Longitudinal metal reinforcing rib; 17. Bolt; 18. Auxiliary reinforcement support one; 19. Auxiliary reinforcement support two; 20. Mounting through hole one; 21. Mounting through hole two; 22. Limiting through hole one; 23. Limiting through hole two; 24. Arc-shaped groove; 25. Arc-shaped anti-slip rib; 26. Weight-reducing through hole; 27. Snap-fit ​​groove; 28. Bolt 29. Mounting sleeve; 30. Arc-shaped snap-fit ​​plate; 31. Composite reinforcing fiber bundle; 32. Carbon fiber; 33. Silicon carbide fiber; 34. Graphite fiber; 35. Metal fiber; 36. Heterocyclic polyamide fiber; 37. First refractory base layer; 38. Second refractory base layer; 39. Transverse strip braided tape; 40. Longitudinal strip braided tape; 41. Polyphenylene sulfide fiber; 42. Aromatic polyamide surface-treated fiber; 43. Polyacrylonitrile pre-oxidized fiber; 44. Basalt fiber; 45. Anti-erosion braided layer; 46. Surface coating layer; 47. Thickened braided tape body one; 48. Thickened braided tape body two; 49. Polytetrafluoroethylene fiber; 50. Polyvinylidene chloride fiber; 51. Aramid sulfone fiber; 52. Ethylene-trifluorochloroethylene fiber. Detailed Implementation

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

[0034] Example 1, by Figures 1 to 4 The present invention discloses a high-strength composite panel for display cases that is resistant to acid and alkali corrosion. The composite panel body 1 is composed of a combined high-strength core board 2, an aluminum alloy frame 3, a fire-resistant protective layer 4, an acid and alkali corrosion resistant layer 5, and a high-density polyethylene surface layer 6. The aluminum alloy frame 3 covers the sides of the combined high-strength core board 2, the fire-resistant protective layer 4 covers the combined high-strength core board 2 and the aluminum alloy frame 3, the acid and alkali corrosion resistant layer 5 covers the fire-resistant protective layer 4, and the high-density polyethylene surface layer 6 covers the acid and alkali corrosion resistant layer 5. The combined high-strength core board 2, the aluminum alloy frame 3, the fire-resistant protective layer 4, the acid and alkali corrosion resistant layer 5, and the high-density polyethylene surface layer 6 are all bonded together by a resin adhesive layer 7.

[0035] The overall strength of the composite board can be improved by using the combined high-strength core board 2, and the fire-resistant protective layer 4 and the acid and alkali erosion resistant layer 5 can be improved by using the composite board.

[0036] The composite high-strength core board 2 is composed of a wood substrate 1 8, a wood substrate 2 9, a reinforcing layer 1 10, a reinforcing layer 2 11, and a reinforcing layer 3 12. The reinforcing layer 1 10 is connected to the bottom end of the wood substrate 1 8, the reinforcing layer 2 11 is connected between the wood substrate 1 8 and the wood substrate 2 9, and the reinforcing layer 3 12 is connected to the top end of the wood substrate 2 9. The wood substrate 1 8, the wood substrate 2 9, the reinforcing layer 1 10, the reinforcing layer 2 11, and the reinforcing layer 3 12 are all bonded together by a resin adhesive layer 7.

[0037] The combined structure consisting of wood substrate 1 8, wood substrate 2 9, reinforcing layer 1 10, reinforcing layer 2 11 and reinforcing layer 3 12 further improves the overall strength. The bonding method using resin adhesive layer 7 increases the stability of the connection between layers.

[0038] Example 2, based on Example 1, is... Figures 3 to 9The wood substrate 8 has several transverse through holes 13, and transverse metal reinforcing ribs 14 are inserted inside the transverse through holes 13. The wood substrate 9 has several longitudinal through holes 15, and several longitudinal metal reinforcing ribs 16 are inserted inside the longitudinal through holes 15. Chemical adhesive is used to fill the spaces between the transverse metal reinforcing ribs 14 and the transverse through holes 13, and between the longitudinal metal reinforcing ribs 16 and the longitudinal through holes 15. The transverse metal reinforcing ribs 14 and the longitudinal metal reinforcing ribs 16 are fixedly connected to the aluminum alloy frame 3 by several bolts 17. The composite high-strength core board 2 has several auxiliary reinforcing supports 18 that match the transverse metal reinforcing ribs 14 and several auxiliary reinforcing supports 29 that match the longitudinal metal reinforcing ribs 16. The composite high-strength core board 2 has several mounting through holes 20 that match the auxiliary reinforcing supports 18 and several mounting through holes 20 that match the auxiliary reinforcing supports 29. The auxiliary reinforcement support 18 has a matching through hole 21, a limiting through hole 22 matching the transverse metal reinforcing rib 14, and a limiting through hole 23 matching the longitudinal metal reinforcing rib 16. The sides of the transverse metal reinforcing rib 14 and the longitudinal metal reinforcing rib 16 are provided with several arc-shaped grooves 24. Arc-shaped anti-slip ribs 25 are fixedly provided inside the arc-shaped grooves 24. The interior of the transverse metal reinforcing rib 14 and the longitudinal metal reinforcing rib 16 is provided with weight-reducing through holes 26. Both ends of the transverse metal reinforcing rib 14 and the longitudinal metal reinforcing rib 16 are provided with snap-fit ​​grooves 27. Both ends of the weight-reducing through holes 26 are provided with bolt mounting sleeves 28 matching the bolts 17. One end of the side of the bolt mounting sleeve 28 is fixedly provided with several arc-shaped snap-fit ​​plates 29 matching the snap-fit ​​grooves 27. The arc-shaped snap-fit ​​plates 29 are installed inside the snap-fit ​​grooves 27 and connected to them by several screws.

[0039] The composite panels used in this display case are prefabricated modularly based on the shape and size of the display case. Therefore, no cutting or drilling is required during later installation. During processing, horizontal through holes 13 and vertical through holes 15 are pre-drilled on the wooden substrate 18 and wooden substrate 29. The horizontal metal reinforcing ribs 14 are inserted into the horizontal through holes 13 and reinforced with chemical adhesive. The vertical metal reinforcing ribs 16 are inserted into the vertical through holes 15 and reinforced with chemical adhesive. The ends of the horizontal metal reinforcing ribs 14 and vertical metal reinforcing ribs 16 are fixedly connected to the aluminum alloy frame 3 by bolts 17 to improve the overall stability. The horizontal metal reinforcing ribs 14 and vertical metal reinforcing ribs 16 are reinforced by auxiliary reinforcing supports 18 and 2, respectively, to improve the bending resistance. The bolt mounting sleeve 28 can be connected to the bolts 17. By setting the horizontal metal reinforcing ribs 14 and vertical metal reinforcing ribs 16 to be polygonal structures, the bending resistance can be further improved.

[0040] Reinforcing layer 10, reinforcing layer 2, and reinforcing layer 3 are all woven from several composite reinforcing fiber bundles 30. Reinforcing layer 10, reinforcing layer 2, and reinforcing layer 3 are all dense mesh structures. The composite reinforcing fiber bundles 30 are composed of carbon fiber 31, silicon carbide fiber 32, graphite fiber 33, metal fiber 34, and heterocyclic polyamide fiber 35 twisted together.

[0041] The strength can be further improved by using a composite reinforcing fiber bundle 30 composed of carbon fiber 31, silicon carbide fiber 32, graphite fiber 33, metal fiber 34 and heterocyclic polyamide fiber 35, and weaving the composite reinforcing fiber bundle 30 into reinforcing layer 10, reinforcing layer 11 and reinforcing layer 32.

[0042] Example 3, based on Example 1, is... Figure 3 and Figure 10 As shown, the fire-resistant protective layer 4 is composed of a first fire-resistant base layer 36 and a second fire-resistant base layer 37. The first fire-resistant base layer 36 and the second fire-resistant base layer 37 are staggered connection structures. Both the first fire-resistant base layer 36 and the second fire-resistant base layer 37 are woven from several transverse strip woven strips 38 and several longitudinal strip woven strips 39. The transverse strip woven strips 38 and the longitudinal strip woven strips 39 are woven from polyphenylene sulfide fiber 40, aromatic polyamide surface chemically treated fiber 41, polyacrylonitrile pre-oxidized fiber 42 and basalt fiber 43.

[0043] By weaving transverse strips 38 and longitudinal strips 39, which are composed of polyphenylene sulfide fiber 40, aromatic polyamide surface-treated fiber 41, polyacrylonitrile pre-oxidized fiber 42 and basalt fiber 43, and weaving the transverse strips 38 and longitudinal strips 39 to form a first refractory base layer 36 and a second refractory base layer 37, the overall fire resistance performance can be improved and the safety of use can be enhanced.

[0044] Example 4, based on Example 1, is... Figure 3 and Figure 11 As shown, the acid and alkali corrosion resistant layer 5 is composed of an anti-corrosion braided layer 44 and a surface coating layer 45. The surface coating layer 45 is sprayed on the outer surface of the anti-corrosion braided layer 44. The anti-corrosion braided layer 44 is composed of several thickened braided tapes 46 and several thickened braided tapes 47. Both thickened braided tapes 46 and thickened braided tapes 47 are woven from polytetrafluoroethylene fiber 48, polyvinylidene chloride fiber 49, aramid fiber 50 and ethylene-trifluorochloroethylene fiber 51.

[0045] By constructing thickened braided tape body 1 46 and thickened braided tape body 2 47, which are made of polytetrafluoroethylene fiber 48, polyvinylidene chloride fiber 49, aramid fiber 50 and ethylene-trifluorochloroethylene fiber 51, and weaving thickened braided tape body 1 46 and thickened braided tape body 2 47 to form an anti-corrosion braided layer 44, the overall acid and alkali corrosion resistance can be improved.

[0046] In practice, by using a composite high-strength core board consisting of a wood-based substrate 1, a wood-based substrate 2, a reinforcing layer 1, a reinforcing layer 2, and a reinforcing layer 3, its compressive, bending, and tensile strength can be improved, thereby enhancing its overall strength. Further strengthening can be achieved by incorporating transverse metal reinforcing ribs, longitudinal metal reinforcing ribs, auxiliary reinforcing supports 1 and 2, and composite reinforcing fiber bundles composed of twisted carbon fiber, silicon carbide fiber, graphite fiber, metal fiber, and heterocyclic polyamide fiber. Additionally, the strength can be further enhanced by incorporating polyphenylene sulfide fiber and aromatic polyamide surface... The transverse and longitudinal strip braided bands, composed of chemically treated fibers, pre-oxidized polyacrylonitrile fibers, and basalt fibers, can improve the fire resistance and flame retardancy of the composite board, thereby providing safety protection for the exhibits inside the display case. By incorporating two thickened braided bands, one made of polytetrafluoroethylene fibers, polyvinylidene chloride fibers, aramid fibers, and ethylene-trifluorochloroethylene fibers, the composite board's resistance to acid and alkali corrosion can be improved, thus enhancing the adaptability of the display case, making it suitable for displaying different types of items and extending its service life.

Claims

1. A high-strength composite panel for display cases that is resistant to acid and alkali corrosion, comprising a composite panel body (1), characterized in that: The composite panel body (1) is composed of a combined high-strength core board (2), an aluminum alloy frame (3), a fire-resistant protective layer (4), an acid and alkali corrosion resistant layer (5), and a high-density polyethylene surface layer (6). The aluminum alloy frame (3) covers the side of the combined high-strength core board (2), the fire-resistant protective layer (4) covers the combined high-strength core board (2) and the aluminum alloy frame (3), the acid and alkali corrosion resistant layer (5) covers the fire-resistant protective layer (4), and the high-density polyethylene surface layer (6) covers the acid and alkali corrosion resistant layer (5). The combined high-strength core board (2), the aluminum alloy frame (3), the fire-resistant protective layer (4), the acid and alkali corrosion resistant layer (5), and the high-density polyethylene surface layer (6) are all bonded together by a resin adhesive layer (7). The composite high-strength core board (2) is composed of a wood substrate one (8), a wood substrate two (9), a reinforcement layer one (10), a reinforcement layer two (11) and a reinforcement layer three (12). The reinforcement layer one (10) is connected to the bottom of the wood substrate one (8), the reinforcement layer two (11) is connected between the wood substrate one (8) and the wood substrate two (9), and the reinforcement layer three (12) is connected to the top of the wood substrate two (9). The wood substrate one (8), the wood substrate two (9), the reinforcement layer one (10), the reinforcement layer two (11) and the reinforcement layer three (12) are all bonded together by a resin adhesive layer (7).

2. The high-strength composite board for display cases resistant to acid and alkali corrosion according to claim 1, characterized in that: The interior of the first wooden substrate (8) has several transverse through holes (13), and transverse metal reinforcing ribs (14) are interspersed inside the transverse through holes (13). The interior of the second wooden substrate (9) has several longitudinal through holes (15), and several longitudinal metal reinforcing ribs (16) are interspersed inside the longitudinal through holes (15). Chemical adhesive is filled between the transverse metal reinforcing ribs (14) and the transverse through holes (13), and between the longitudinal metal reinforcing ribs (16) and the longitudinal through holes (15). The transverse metal reinforcing ribs (14) and the longitudinal metal reinforcing ribs (16) are fixedly connected to the aluminum alloy frame (3) by several bolts (17).

3. The high-strength composite board for display cases resistant to acid and alkali corrosion according to claim 2, characterized in that: The composite high-strength core board (2) is internally provided with several auxiliary reinforcement supports (18) that match the transverse metal reinforcing ribs (14) and several auxiliary reinforcement supports (19) that match the longitudinal metal reinforcing ribs (16).

4. The high-strength composite board for display cases resistant to acid and alkali corrosion according to claim 3, characterized in that: The combined high-strength core board (2) is provided with a number of mounting through holes (20) that match the auxiliary reinforcement support (18) and a number of mounting through holes (21) that match the auxiliary reinforcement support (19). The auxiliary reinforcement support (18) is provided with a limiting through hole (22) that matches the transverse metal reinforcing rib (14), and the auxiliary reinforcement support (19) is provided with a limiting through hole (23) that matches the longitudinal metal reinforcing rib (16).

5. The high-strength composite board for display cases resistant to acid and alkali corrosion according to claim 2, characterized in that: The sides of the transverse metal reinforcing rib (14) and the longitudinal metal reinforcing rib (16) are provided with several arc-shaped grooves (24), and arc-shaped anti-slip ribs (25) are fixedly provided inside the arc-shaped grooves (24).

6. The high-strength composite board for display cases resistant to acid and alkali corrosion according to claim 5, characterized in that: The transverse metal reinforcing rib (14) and the longitudinal metal reinforcing rib (16) are both provided with weight-reducing through holes (26). Both ends of the transverse metal reinforcing rib (14) and the longitudinal metal reinforcing rib (16) are provided with snap-fit ​​grooves (27). Both ends of the weight-reducing through holes (26) are provided with bolt mounting sleeves (28) that match the bolts (17). One end of the bolt mounting sleeve (28) is fixedly provided with several arc-shaped snap-fit ​​plates (29) that match the snap-fit ​​grooves (27). The arc-shaped snap-fit ​​plates (29) are installed inside the snap-fit ​​grooves (27) and connected to them by several screws.

7. The high-strength composite board for display cases resistant to acid and alkali corrosion according to claim 1, characterized in that: The first reinforcement layer (10), the second reinforcement layer (11), and the third reinforcement layer (12) are all woven from several composite reinforcing fiber bundles (30), and the first reinforcement layer (10), the second reinforcement layer (11), and the third reinforcement layer (12) are all dense mesh structures.

8. The high-strength composite board for display cases resistant to acid and alkali corrosion according to claim 7, characterized in that: The composite reinforcing fiber bundle (30) is composed of carbon fiber (31), silicon carbide fiber (32), graphite fiber (33), metal fiber (34) and heterocyclic polyamide fiber (35) twisted together.

9. The high-strength composite board for display cases resistant to acid and alkali corrosion according to claim 1, characterized in that: The fire-resistant protective layer (4) is composed of a first fire-resistant base layer (36) and a second fire-resistant base layer (37). The first fire-resistant base layer (36) and the second fire-resistant base layer (37) are staggered connection structures. Both the first fire-resistant base layer (36) and the second fire-resistant base layer (37) are woven from several transverse strip braided strips (38) and several longitudinal strip braided strips (39). Both the transverse strip braided strips (38) and the longitudinal strip braided strips (39) are woven from polyphenylene sulfide fiber (40), aromatic polyamide surface chemically treated fiber (41), polyacrylonitrile pre-oxidized fiber (42) and basalt fiber (43).

10. The high-strength composite board for display cases resistant to acid and alkali corrosion according to claim 1, characterized in that: The acid and alkali erosion resistant layer (5) is composed of an anti-erosion braided layer (44) and a surface coating layer (45). The surface coating layer (45) is sprayed on the outer surface of the anti-erosion braided layer (44). The anti-erosion braided layer (44) is composed of several thickened braided tapes (46) and several thickened braided tapes (47). Both thickened braided tapes (46) and thickened braided tapes (47) are woven from polytetrafluoroethylene fiber (48), polyvinylidene chloride fiber (49), aramid fiber (50), and ethylene-trifluorochloroethylene fiber (51).

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