Metal-faced rigid polyurethane sandwich panel with good thermal insulation effect

Abstract

This utility model discloses a metal-faced rigid polyurethane sandwich panel with good thermal insulation performance, belonging to the technical field of building insulation materials. It includes an upper metal plate, with an upper trapezoidal reinforcing block fixedly installed on the upper surface of the upper metal plate, and a rigid polyurethane sandwich layer fixedly installed on the lower surface of the upper metal plate. Transverse reinforcing ribs are fixedly installed on the lower surface of the rigid polyurethane sandwich layer. This metal-faced rigid polyurethane sandwich panel with good thermal insulation performance forms a double thermal barrier through a multi-layer insulation structure design consisting of a rigid polyurethane sandwich layer and an insulation particle layer. The rigid polyurethane sandwich layer, with its closed-cell microporous structure, blocks the main heat conduction path, while the expanded perlite particles and rectangular cavities within the insulation particle layer further weaken heat convection and radiation. The synergistic effect of these two elements reduces the overall thermal conductivity of the panel compared to traditional panels, effectively reducing heat loss and meeting the insulation requirements of ultra-low energy consumption buildings.

Description

Technical Field

[0001] This utility model belongs to the technical field of building insulation materials, specifically a metal-faced rigid polyurethane sandwich panel with good thermal insulation effect. Background Technology

[0002] In the field of building energy conservation, the performance of thermal insulation materials directly determines the building's energy consumption level and living comfort. Metal-faced rigid polyurethane sandwich panels (referred to as "polyurethane sandwich panels") have become the core enclosure material for industrial plants, logistics warehouses, public buildings, and low-temperature storage scenarios due to their excellent thermal insulation performance, high-strength structural advantages, and convenient installation characteristics. They have completely solved the pain points of traditional building materials such as "poor thermal insulation, easy cracking, and short lifespan". Currently, existing metal-faced rigid polyurethane sandwich panels generally only use simple metal plates combined with polyurethane sandwich panels for thermal insulation. Due to their relatively simple structure, the thermal insulation performance of existing metal-faced rigid polyurethane sandwich panels needs further improvement. They are prone to heat loss, reducing the overall thermal insulation efficiency and making it difficult to meet the requirements of high-standard buildings. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides a metal-faced rigid polyurethane sandwich panel with good thermal insulation effect, which solves the problem that due to the relatively simple structure, the thermal insulation performance needs to be further improved, heat loss is easy to occur, the overall thermal insulation efficiency is reduced, and it is difficult to meet the requirements of high-standard buildings.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rigid polyurethane sandwich panel with good thermal insulation effect, comprising an upper metal plate, an upper trapezoidal reinforcing block fixedly installed on the upper surface of the upper metal plate, a rigid polyurethane sandwich layer fixedly installed on the lower surface of the upper metal plate, a transverse reinforcing rib fixedly installed on the lower surface of the rigid polyurethane sandwich layer, a longitudinal reinforcing rib fixedly installed on the lower surface of the transverse reinforcing rib, a flame-retardant layer fixedly installed on the lower surface of the longitudinal reinforcing rib, a thermal insulation particle layer fixedly installed on the lower surface of the flame-retardant layer, a sealing convex strip plate fixedly installed on the lower surface of the thermal insulation particle layer, a sealing groove plate provided on the lower surface of the sealing convex strip plate, a lower metal plate fixedly installed on the lower surface of the sealing groove plate, and a lower trapezoidal reinforcing block fixedly installed on the lower surface of the lower metal plate.

[0007] As a further aspect of this utility model, the number of both the upper trapezoidal reinforcing blocks and the lower trapezoidal reinforcing blocks is ten sets.

[0008] As a further embodiment of this utility model: a rectangular cavity is provided inside the heat-insulating particle layer, and the rectangular cavity is filled with heat-insulating particles.

[0009] As a further embodiment of this utility model: the upper surface of the sealing groove plate is provided with a mating groove, and the lower surface of the sealing convex strip plate is fixedly installed with a mating protrusion, and the mating groove engages with the mating protrusion.

[0010] As a further embodiment of this utility model, the outer surfaces of both the upper and lower metal plates are provided with an anti-rust coating.

[0011] (III) Beneficial Effects

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This metal-faced rigid polyurethane sandwich panel with excellent thermal insulation performance forms a double thermal barrier through a multi-layer insulation structure design consisting of a rigid polyurethane sandwich layer and an insulation particle layer. The rigid polyurethane sandwich layer blocks the main heat conduction path with its closed-cell microporous structure, while the expanded perlite particles and rectangular cavities in the insulation particle layer further weaken heat convection and heat radiation. The synergistic effect of the two reduces the overall thermal conductivity of the panel compared to traditional panels, effectively reducing heat loss and meeting the insulation requirements of ultra-low energy consumption buildings.

[0014] 2. This metal-faced rigid polyurethane sandwich panel with good thermal insulation performance has a double sealing structure with sealing convex strips and sealing grooves. The mating protrusions of the sealing convex strips and the mating grooves of the sealing grooves are tightly engaged. With the high-temperature resistant sealant at the engagement point, it can completely block the air flow at the splicing gaps and prevent cold or hot air from seeping in.

[0015] 3. This metal-faced rigid polyurethane sandwich panel with good thermal insulation effect has a grid-like reinforcement structure formed by the intersection of transverse and longitudinal reinforcing ribs, combined with trapezoidal reinforcing blocks on the surface of the upper and lower metal plates, which improves the overall bending strength and shear strength of the panel. Compared with traditional panels without reinforcement structure, it improves the bending strength and shear strength. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a side view of the present invention.

[0018] In the diagram: 1. Upper metal plate; 2. Upper trapezoidal reinforcing block; 3. Rigid polyurethane sandwich layer; 4. Transverse reinforcing rib; 5. Longitudinal reinforcing rib; 6. Flame retardant layer; 7. Thermal insulation particle layer; 8. Sealing raised strip plate; 9. Sealing groove plate; 10. Lower metal plate; 11. Lower trapezoidal reinforcing block. Detailed Implementation

[0019] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0020] like Figure 1-2 As shown, this utility model provides a technical solution: a rigid polyurethane sandwich panel with good thermal insulation effect, comprising an upper metal plate 1, which is made of color-coated steel plate or galvanized steel plate with a thickness of 0.3-0.8mm, possessing good corrosion resistance and mechanical strength. Upper trapezoidal reinforcing blocks 2 are fixedly installed on the upper surface of the upper metal plate 1, each set of upper trapezoidal reinforcing blocks 2 having an isosceles trapezoidal cross-section and being made of the same material as the upper metal plate 1. A rigid polyurethane sandwich layer 3 is fixedly installed on the lower surface of the upper metal plate 1. The rigid polyurethane sandwich layer 3 can effectively block heat conduction and also has a certain sound insulation performance. Transverse reinforcing ribs 4 are fixedly installed on the lower surface of the rigid polyurethane sandwich layer 3, and longitudinal reinforcing ribs 5 are fixedly installed on the lower surface of the transverse reinforcing ribs 4. The transverse reinforcing ribs 4 and longitudinal reinforcing ribs 5 can significantly improve the overall shear strength and deformation resistance of the panel, while also providing better protection for the subsequent flame-retardant layer 6. The longitudinal reinforcing rib 5 provides support. A flame-retardant layer 6 is fixedly installed on the lower surface of the longitudinal reinforcing rib 5. An insulating particle layer 7 is fixedly installed on the lower surface of the flame-retardant layer 6. The insulating particle layer 7 is made of inorganic insulating mortar board with a thickness of 10-20mm. Several rectangular cavities are opened inside, and the rectangular cavities are filled with expanded perlite particles. The insulating particle layer 7 and the flame-retardant layer 6 are fixed with adhesive to form a dual protective structure of "flame retardant + insulation". This not only enhances the fire resistance, but also further blocks heat conduction and improves the insulation effect through the synergistic effect of the expanded perlite particles and the rectangular cavities. A sealing convex strip plate 8 is fixedly installed on the lower surface of the insulating particle layer 7. A sealing groove plate 9 is provided on the lower surface of the sealing convex strip plate 8. A lower metal plate 10 is fixedly installed on the lower surface of the sealing groove plate 9. The material and thickness of the lower metal plate 10 are the same as those of the upper metal plate 1. A lower trapezoidal reinforcing block 11 is fixedly installed on the lower surface of the lower metal plate 10.

[0021] Specifically, such as Figure 1 and Figure 2 As shown, there are ten sets of upper trapezoidal reinforcing blocks 2 and lower trapezoidal reinforcing blocks 11. The interior of the thermal insulation particle layer 7 has a rectangular cavity, which is filled with thermal insulation particles. The upper surface of the sealing groove plate 9 has a mating groove, and the lower surface of the sealing convex strip plate 8 has a mating protrusion. The mating groove engages with the mating protrusion. The outer surfaces of the upper metal plate 1 and the lower metal plate 10 are both coated with an anti-rust coating.

[0022] The working principle of this utility model is as follows:

[0023] S1. During use, the upper metal plate 1 and the lower metal plate 10 serve as the outer layer of protection to resist external wind, rain, impact and other erosion. The upper trapezoidal reinforcing block 2, the lower trapezoidal reinforcing block 11, the transverse reinforcing rib 4 and the longitudinal reinforcing rib 5 work together to improve the structural stability of the plate and prevent deformation.

[0024] S2, the rigid polyurethane sandwich layer 3 serves as the main insulation layer, which blocks heat conduction through its closed-cell structure. The expanded perlite in the insulation particle layer 7 and the rectangular cavity further weaken heat convection. The two work together to achieve efficient insulation. The flame retardant layer 6 prevents the spread of flames in case of fire and ensures safety.

[0025] S3, the interlocking structure of the sealing convex strip plate 8 and the sealing groove plate 9, together with the sealant, prevents air penetration at the joint and avoids heat loss, thereby achieving excellent thermal insulation effect and long-term stability.

[0026] In summary, this metal-faced rigid polyurethane sandwich panel with excellent thermal insulation performance forms a double thermal barrier through its multi-layer insulation structure design, consisting of a rigid polyurethane sandwich layer 3 and an insulation particle layer 7. The rigid polyurethane sandwich layer 3 blocks the main heat conduction path with its closed-cell microporous structure, while the expanded perlite particles and rectangular cavities in the insulation particle layer 7 further weaken heat convection and heat radiation. The synergistic effect of these two elements reduces the overall thermal conductivity of the panel compared to traditional panels, effectively reducing heat loss and meeting the insulation requirements of ultra-low energy consumption buildings.

[0027] This metal-faced rigid polyurethane sandwich panel with good thermal insulation performance has a double sealing structure with a sealing convex strip plate 8 and a sealing groove plate 9. The mating protrusion of the sealing convex strip plate 8 and the mating groove of the sealing groove plate 9 are tightly engaged. With the high-temperature resistant sealant at the engagement point, the air flow at the splicing gap can be completely blocked, preventing the infiltration of cold or hot air from the outside.

[0028] This metal-faced rigid polyurethane sandwich panel with good thermal insulation effect has a grid-like reinforcement structure formed by the intersection of transverse reinforcing ribs 4 and longitudinal reinforcing ribs 5, combined with trapezoidal reinforcing blocks on the surface of the upper and lower metal plates, which improves the overall bending strength and shear strength of the panel. Compared with traditional panels without reinforcement structure, it improves the bending strength and shear strength.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A rigid polyurethane sandwich panel with a metal surface and good thermal insulation effect, comprising an upper metal plate (1), characterized in that: An upper trapezoidal reinforcing block (2) is fixedly installed on the upper surface of the upper metal plate (1). A rigid polyurethane sandwich layer (3) is fixedly installed on the lower surface of the upper metal plate (1). A transverse reinforcing rib (4) is fixedly installed on the lower surface of the rigid polyurethane sandwich layer (3). A longitudinal reinforcing rib (5) is fixedly installed on the lower surface of the transverse reinforcing rib (4). A flame-retardant layer (6) is fixedly installed on the lower surface of the longitudinal reinforcing rib (5). A thermal insulation particle layer (7) is fixedly installed on the lower surface of the flame-retardant layer (6). A sealing convex strip plate (8) is fixedly installed on the lower surface of the sealing convex strip plate (8). A sealing groove plate (9) is provided on the lower surface of the sealing groove plate (9). A lower metal plate (10) is fixedly installed on the lower surface of the sealing groove plate (9). A lower trapezoidal reinforcing block (11) is fixedly installed on the lower surface of the lower metal plate (10).

2. The rigid polyurethane sandwich panel with good thermal insulation effect on a metal surface according to claim 1, characterized in that: The number of the upper trapezoidal reinforcing block (2) and the lower trapezoidal reinforcing block (11) is ten sets each.

3. The rigid polyurethane sandwich panel with good thermal insulation effect on a metal surface according to claim 1, characterized in that: The interior of the heat-insulating particle layer (7) has a rectangular cavity, and the interior of the rectangular cavity is filled with heat-insulating particles.

4. The rigid polyurethane sandwich panel with good thermal insulation effect on a metal surface according to claim 1, characterized in that: The upper surface of the sealing groove plate (9) is provided with a mating groove, and the lower surface of the sealing convex strip plate (8) is fixedly installed with a mating protrusion, and the mating groove engages with the mating protrusion.

5. The rigid polyurethane sandwich panel with good thermal insulation effect on a metal surface according to claim 1, characterized in that: The outer surfaces of both the upper metal plate (1) and the lower metal plate (10) are provided with an anti-rust coating.

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