High density polyurethane board

Abstract

This invention provides a high-density polyurethane board, belonging to the field of composite board technology. Its structure includes: a support frame pre-embedded in a polyurethane core; several protruding ribs on the outside of the support frame; and concave-convex plates fixedly connected inside the support frame. The top and bottom surfaces of the concave-convex plates are respectively attached to the upper and lower walls of the support frame. Support plates are connected between the top of the concave-convex plates and the lower wall of the support frame, and between the bottom of the concave-convex plates and the upper wall of the support frame. Longitudinal and transverse reinforcing bars are interconnected to form a mesh reinforcement, which is pre-embedded in the polyurethane core. This invention improves the structural strength and toughness of the polyurethane core by pre-embedding a support frame with an internal support structure and a mesh reinforcement within the polyurethane core. The inner metal plate can be hollow, with added zigzag support pieces and filled with polyurethane foam material. This invention improves the mechanical properties of the board, enabling it to accommodate high-density polyurethane foam material, and has significant technical advantages.

Description

Technical Field

[0001] This utility model relates to the field of composite board technology, specifically a high-density polyurethane board. Background Technology

[0002] The density (weight per unit volume) of insulation boards determines the material's compactness and mechanical properties. Generally, a higher density means a denser internal structure and stronger compressive strength, making it particularly suitable for load-bearing applications such as floors or exterior wall bases. For example, the density of extruded polystyrene (XPS) boards typically ranges from 25 to 32 kg / m³. 3 Between these two options, one can provide sufficient load-bearing capacity while maintaining a relatively lightweight characteristic; while polyurethane insulation boards have a density of 32kg / m³. 3 In addition, a thinner design can be implemented while maintaining the same insulation performance, saving floor height space. Currently, the optimal density range for polyurethane boards is typically 40-60 kg / m². 3 Further increasing the density requires significantly reducing the proportion of foaming agent in the white material or accelerating the gelation reaction with a catalyst, which leads to polyurethane becoming brittle and losing toughness. Such impacts on mechanical properties are often unacceptable. Against this backdrop, how to further increase the density of the board without affecting mechanical properties has always been one of the technical problems to be solved in this field. Summary of the Invention

[0003] The technical problem to be solved by this utility model is: how to design a polyurethane board that can accommodate high density polyurethane foam material and ensure the overall mechanical properties of the board.

[0004] To achieve the above technical objectives, the present invention adopts the following technical solution:

[0005] A high-density polyurethane board includes a polyurethane core material, a first outer metal plate, and an inner metal plate, with the polyurethane core material located between the first outer metal plate and the inner metal plate. It also includes channels, longitudinal channels, transverse channels, a support frame, protruding ribs, convex and concave plates, a support plate, longitudinal stiffeners, and transverse stiffeners. The support frame is embedded in the polyurethane core material, and several protruding ribs are provided on the outside of the support frame. The support frame and the protruding ribs form channels within the polyurethane core material. Concave and convex plates are fixedly connected inside the support frame, with their top and bottom surfaces respectively abutting the upper and lower walls of the support frame. A support plate is connected between the top of the concave and convex plates and the lower wall of the support frame, and between the bottom of the concave and convex plates and the upper wall of the support frame. The longitudinal and transverse stiffeners are interconnected to form a mesh-like reinforcement, which is embedded in the polyurethane core material to form several longitudinal channels and several transverse channels.

[0006] Preferably, an annular recess is provided at the end of both the longitudinal channel and the transverse channel, and an end cap is fastened to the annular recess.

[0007] Preferably, a second outer metal plate is provided outside the first outer metal plate.

[0008] Preferably, the inner metal plate is a hollow plate, and a zigzag support piece is fixedly connected inside the hollow plate, with a gap between the zigzag support piece and the inner wall of the hollow plate.

[0009] Preferably, the gap is filled with polyurethane foam material.

[0010] Preferably, the reinforcing material is steel wire mesh with a diameter of 1 to 3 mm.

[0011] Preferably, the mesh reinforcement is a tubular mesh frame.

[0012] Preferably, the materials of the support frame, convex ribs, concave and convex plates, and support plates are selected from PVC, ABS, PMMA, or PC.

[0013] Preferably, each support frame is located on the same plane in the polyurethane core material, with gaps between adjacent support frames.

[0014] In the above technical solution, the polyurethane core material is a polyurethane foam material forming an inner core structure between the first outer metal plate and the inner metal plate, used for heat insulation, heat preservation, noise reduction, etc. Conventional polyurethane foam materials can be used for the polyurethane core material of this utility model. The first outer metal plate and the inner metal plate are the outer protective structure of this utility model, serving as the outer layer and providing structural support. The channels are natural channels formed by the support frames and protruding ribs embedded in the polyurethane core material; the transverse and longitudinal ribs form a mesh-like rib structure, and the longitudinal and transverse channels are natural channels formed by the aforementioned mesh ribs embedded in the polyurethane core material. Several support frames are provided, located on the same plane and arranged at intervals. The support frames provide the first-level support in the polyurethane core material. The concave and convex plates in the support frames ensure the compressive strength of the support frames themselves, and the support plates further ensure the compressive strength of the support frames; the protruding ribs on the outside of the support frames serve a positioning function between the support frames and the polyurethane core material. The aforementioned mesh ribs provide the second-level support in the polyurethane core material and improve the overall toughness of the polyurethane core material.

[0015] In the preferred technical solution, when the reinforcing bars adopt a tubular structure, an annular recess can be provided at the end and a snap-on end cap can be provided to ensure the internal sealing of the reinforcing bars. Furthermore, a second outer metal plate can be added outside the first outer metal plate to ensure the structural strength of the outer metal surface layer. Alternatively, the inner metal plate can be designed as a hollow plate, using folded support pieces as its structural support, and polyurethane foam material can be filled in the gaps, which helps to improve the overall thermal insulation performance of this invention.

[0016] This invention provides a high-density polyurethane board. The technical solution involves embedding a support frame with an internal support structure and mesh reinforcement within the polyurethane core material, effectively improving the structural strength and toughness of the polyurethane core material. Simultaneously, the inner metal plate can be a hollow structure, with added zigzag support plates and filled with polyurethane foam material. This invention significantly improves the mechanical properties of the board, enabling it to accommodate high-density polyurethane foam material, demonstrating outstanding technical advantages. Attached Figure Description

[0017] Figure 1 This is an overall drawing of the present invention;

[0018] Figure 2 yes Figure 1 Enlarged view of a local structure in the middle;

[0019] Figure 3 This is a cross-sectional view of the present invention;

[0020] Figure 4 yes Figure 3 Enlarged view of a local structure in the middle;

[0021] Figure 5 This is a cross-sectional view of the polyurethane core material;

[0022] Figure 6 yes Figure 5 Enlarged view of a local structure in the middle;

[0023] In the picture:

[0024] 1. Polyurethane core material; 2. First outer metal plate; 3. Second outer metal plate; 4. Inner metal plate.

[0025] 5. Channel; 6. Longitudinal channel; 7. Transverse channel; 8. Annular concave platform

[0026] 9. Support frame; 10. Protruding rib; 11. Concave-convex plate; 12. Support plate

[0027] 13. Longitudinal reinforcement; 14. Transverse reinforcement; 15. End caps; 16. Hollow core slab.

[0028] 17. Gap 18. Folded line support piece. Detailed Implementation

[0029] The specific embodiments of this utility model will be described in detail below. To avoid excessive and unnecessary details, well-known structures or functions will not be described in detail in the following embodiments. The approximate language used in the following embodiments can be used for quantitative descriptions, indicating that a certain degree of variation in quantity is permissible without changing the basic function. Unless otherwise defined, the technical and scientific terms used in the following embodiments have the same meaning as commonly understood by those skilled in the art to which this utility model pertains.

[0030] Example 1

[0031] A high-density polyurethane board, such as Figures 1-6 As shown, the system includes a polyurethane core material 1, a first outer metal plate 2, and an inner metal plate 4, with the polyurethane core material 1 located between the first outer metal plate 2 and the inner metal plate 4. It also includes a channel 5, a longitudinal channel 6, a transverse channel 7, a support frame 9, protruding ribs 10, concave-convex plates 11, a support plate 12, longitudinal stiffeners 13, and transverse stiffeners 14. The support frame 9 is pre-embedded in the polyurethane core material 1, and several protruding ribs 10 are provided on the outside of the support frame 9. The support frame 9 and the protruding ribs 10 are located within the polyurethane core material. A channel 5 is formed in the support frame 9. A concave-convex plate 11 is fixedly connected inside the support frame 9. The top and bottom surfaces of the concave-convex plate 11 are respectively attached to the upper and lower walls of the support frame 9. A support plate 12 is connected between the top of the concave-convex plate 11 and the lower wall of the support frame 9, and between the bottom of the concave-convex plate 11 and the upper wall of the support frame 9. The longitudinal ribs 13 and the transverse ribs 14 are connected to each other to form a mesh rib. The mesh rib is embedded in the polyurethane core material 1 to form a plurality of longitudinal channels 6 and a plurality of transverse channels 7.

[0032] In the above technical solution, the polyurethane core material 1 is a polyurethane foam material forming an inner core structure between the first outer metal plate 2 and the inner metal plate 4, used for heat insulation, heat preservation, noise reduction, etc. The polyurethane core material 1 of this utility model can be a conventional polyurethane foam material. The first outer metal plate 2 and the inner metal plate 4 are the outer protective structure of this utility model, serving as the outer layer and providing structural support. The channel 5 is a natural channel formed by the support frame 9 and the protruding rib 10 embedded in the polyurethane core material; the transverse ribs 14 and the longitudinal ribs 13 form a mesh-like rib structure, and the longitudinal channel 6 and the transverse channel 7 are natural channels formed by the aforementioned mesh-like ribs embedded in the polyurethane core material 1. Several support frames 9 are provided, located on the same plane and arranged at intervals. The support frames 9 provide the first-level support in the polyurethane core material 1. The concave and convex plates 11 in the support frames 9 are used to ensure the compressive strength of the support frames 9 themselves, and the support plates 12 further ensure the compressive strength of the support frames 9. The protruding ribs 10 on the outside of the support frames 9 are used to position the support frames 9 and the polyurethane core material 1. The above-mentioned mesh reinforcement provides the second-level support in the polyurethane core material 1 and improves the overall toughness of the polyurethane core material 1.

[0033] Example 2

[0034] A high-density polyurethane board, such as Figures 1-6As shown, the system includes a polyurethane core material 1, a first outer metal plate 2, and an inner metal plate 4, with the polyurethane core material 1 located between the first outer metal plate 2 and the inner metal plate 4. It also includes a channel 5, a longitudinal channel 6, a transverse channel 7, a support frame 9, protruding ribs 10, concave-convex plates 11, a support plate 12, longitudinal stiffeners 13, and transverse stiffeners 14. The support frame 9 is pre-embedded in the polyurethane core material 1, and several protruding ribs 10 are provided on the outside of the support frame 9. The support frame 9 and the protruding ribs 10 are located within the polyurethane core material. A channel 5 is formed in section 1. A concave-convex plate 11 is fixedly connected inside the support frame 9. The top and bottom surfaces of the concave-convex plate 11 are respectively attached to the upper and lower walls of the support frame 9. A support plate 12 is connected between the top of the concave-convex plate 11 and the lower wall of the support frame 9, and between the bottom of the concave-convex plate 11 and the upper wall of the support frame 9. The longitudinal ribs 13 and the transverse ribs 14 are connected to each other to form a mesh rib. The mesh rib is embedded in the polyurethane core material 1 to form several longitudinal channels 6 and several transverse channels 7. An annular recess 8 is left at the end of the longitudinal channel 6 and the end of the transverse channel 7, and an end cap 15 is fastened at the annular recess 8. A second outer metal plate 3 is also provided outside the first outer metal plate 2. The inner metal plate 4 is a hollow plate 16. A zigzag support piece 18 is fixedly connected inside the hollow plate 16, and a gap 17 is left between the zigzag support piece 18 and the inner wall of the hollow plate 16. The gap 17 is filled with polyurethane foam. The mesh reinforcement is a wire mesh with a diameter of 1-3 mm. The mesh reinforcement is a tubular mesh frame. The materials of the support frame 9, the protruding rib 10, the concave-convex plate 11, and the support plate 12 are each selected from PVC, ABS, PMMA, or PC. Each support frame 9 is located on the same plane in the polyurethane core material 1, and a gap is left between adjacent support frames 9. In the above technical solution, when the reinforcement adopts a tubular structure, an annular recess 8 can be set at the end and the end cap 18 can be pressed to ensure the sealing of the reinforcement. In addition, a second outer metal plate 3 can be added outside the first outer metal plate 2 to ensure the structural strength of the outer metal surface layer. Alternatively, the inner metal plate 4 can be designed as a hollow plate 16, using the folded support piece 18 as its structural support, and the gap 17 can be filled with polyurethane foam, which is beneficial to improving the overall thermal insulation performance of this utility model.

[0035] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, and improvements made within the scope of this utility model application should be included within the protection scope of this utility model.

Claims

1. A high-density polyurethane board, comprising a polyurethane core material (1), a first outer metal plate (2), and an inner metal plate (4), wherein the polyurethane core material (1) is located between the first outer metal plate (2) and the inner metal plate (4); characterized in that, It also includes channels (5), longitudinal channels (6), transverse channels (7), support frames (9), protruding ribs (10), concave and convex plates (11), support plates (12), longitudinal reinforcing bars (13), and transverse reinforcing bars (14). Among them, the support frame (9) is pre-embedded in the polyurethane core material (1), and several protruding ribs (10) are provided on the outside of the support frame (9). The support frame (9) and the protruding ribs (10) form a channel (5) in the polyurethane core material (1). Concave and convex plates are fixedly connected inside the support frame (9). The top and bottom surfaces of the plate (11) are respectively attached to the upper and lower walls of the support frame (9). A support plate (12) is connected between the top of the plate (11) and the lower wall of the support frame (9), and between the bottom of the plate (11) and the upper wall of the support frame (9). The longitudinal stiffeners (13) and the transverse stiffeners (14) are connected to each other to form a mesh stiffener. The mesh stiffener is embedded in the polyurethane core material (1) to form a number of longitudinal channels (6) and a number of transverse channels (7).

2. The high-density polyurethane board according to claim 1, characterized in that, An annular recess (8) is provided at the end of the longitudinal channel (6) and the end of the transverse channel (7), and an end cap (15) is fastened at the annular recess (8).

3. The high-density polyurethane board according to claim 1, characterized in that, A second outer metal plate (3) is also provided outside the first outer metal plate (2).

4. The high-density polyurethane board according to claim 1, characterized in that, The inner metal plate (4) is a hollow plate (16), and a folded support piece (18) is fixedly connected inside the hollow plate (16). A gap (17) is left between the folded support piece (18) and the inner wall of the hollow plate (16).

5. A high-density polyurethane board according to claim 4, characterized in that, The gap (17) is filled with polyurethane foam material.

6. A high-density polyurethane board according to claim 1, characterized in that, The reinforcing mesh is made of steel wire mesh, and the diameter of the steel wire mesh is 1 to 3 mm.

7. A high-density polyurethane board according to claim 1, characterized in that, The mesh reinforcement is a tubular space frame.

8. A high-density polyurethane board according to claim 1, characterized in that, The materials of the support frame (9), the protruding rib (10), the concave and convex plate (11), and the support plate (12) are selected from PVC, ABS, PMMA or PC.

9. A high-density polyurethane board according to claim 1, characterized in that, Each support frame (9) is located on the same plane in the polyurethane core material (1), and there is a gap between adjacent support frames (9).

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