Lightweight high-strength phase change energy storage wooden floor

Abstract

The utility model discloses a light high-strength phase change energy storage wooden floor which comprises a sandwich layer (1), and wooden compression-resistant panels (2) are arranged on the upper face and the lower face of the sandwich layer (1). The sandwich layer (1) comprises a base board group (3) which is vertically arranged and is of a honeycomb structure on the transverse plane, the wood compression-resistant panel (2) is fixed with the upper edge and the lower edge of the base board group (3), hollow grooves (10) are formed in the base board group (3) at intervals, and the hollow grooves (10) are filled with phase change energy storage foaming agents (4); the wood grain direction of the base body wood board group (3) is parallel to the board surface and the arrangement direction of the board surface, and the wood grain direction of the wood compression-resistant panel (2) is parallel to the board surface and perpendicular to the wood grain direction of the base body wood board group (3); according to the utility model, the wood material is used as the main body, the multi-layer structure with the honeycomb sandwich layer is formed by connecting according to the wood grain direction, and the phase change energy storage foaming agent is filled in the sandwich layer, so that the structure stability and the heat preservation property are better.

Description

Technical Field

[0001] This utility model relates to the field of building materials, and in particular to a lightweight, high-strength phase change energy storage wooden floor. Background Technology

[0002] Currently, aluminum alloys are commonly used in the field of lightweight building. While these materials possess certain structural properties, their production consumes a lot of energy and emits a significant amount of carbon. Wood, as a renewable and low-carbon material, has unique advantages in application; however, the strength of fast-growing timber needs to be improved when used directly for structural load-bearing.

[0003] Existing methods for reinforcing wood materials have certain limitations: chemical modification processes may involve the use of pollutants such as formaldehyde; in physical structural design schemes, conventional reinforced structures have limited effectiveness in improving mechanical properties, and key indicators such as bending resistance and impact resistance still have room for optimization. In addition, existing sandwich structures generally have room for improvement in terms of integrated thermal insulation functions, and the performance of traditional insulation materials (such as rock wool) may degrade in humid environments.

[0004] Based on the above situation, how to develop a wood building material that combines lightweight, high strength and efficient thermal insulation to meet the needs of green buildings for low carbon and functionality has become the direction of industry research. Utility Model Content

[0005] The purpose of this invention is to provide a lightweight, high-strength phase change energy storage wooden floor. This invention uses wood as the main material, connecting multiple layers with honeycomb-structured core layers according to the wood grain direction, and filling the core layers with a phase change energy storage foaming agent, resulting in good structural stability and thermal insulation.

[0006] The technical solution of this utility model is as follows: A lightweight, high-strength phase change energy storage wooden floor includes a core layer, with wooden pressure-resistant panels on both the upper and lower surfaces of the core layer; the core layer includes a base wood board assembly arranged vertically and having a honeycomb structure on the horizontal surface, the wooden pressure-resistant panels being fixed to the upper and lower edges of the base wood board assembly, the base wood board assembly having hollow grooves spaced inside, and the hollow grooves being filled with a phase change energy storage foaming agent; the wood grain direction of the base wood board assembly is parallel to the board surface and its arrangement direction, and the wood grain direction of the wooden pressure-resistant panels is parallel to the board surface and perpendicular to the wood grain direction of the base wood board assembly.

[0007] In the aforementioned lightweight, high-strength phase change energy storage wood flooring, a cold-pressed adhesive layer is present between the core layer and the wood pressure-resistant panel.

[0008] In the aforementioned lightweight, high-strength phase change energy storage wooden floor, the cold-pressed adhesive layer is a cold-curing adhesive.

[0009] In the aforementioned lightweight, high-strength phase change energy storage wooden floor, the base wood panel assembly includes multiple parallel horizontal panels. On the horizontal panels, there are multiple first inclined panels with an included angle of 60° and multiple second inclined panels with an included angle of 120°. The intersection points of the first and second inclined panels are connected and are all located between the horizontal panels.

[0010] In the aforementioned lightweight, high-strength phase change energy storage wooden floor, the spacing between the horizontal boards, the spacing between the first inclined boards, and the spacing between the second inclined boards are all equal.

[0011] In the aforementioned lightweight, high-strength phase change energy storage wooden floor, the horizontal plate, the first inclined plate, and the second inclined plate are each provided with multiple connecting slots. The intersection of the horizontal plate and the first inclined plate, the intersection of the horizontal plate and the second inclined plate, and the intersection of the first inclined plate and the second inclined plate are connected by two corresponding connecting slots.

[0012] Compared with existing technologies, this utility model uses wood as the main material to form a multi-layer structure with a lower wood compression-resistant panel, a sandwich layer, and an upper wood compression-resistant panel. The sandwich layer includes a honeycomb-structured base wood board assembly. Compared with traditional honeycomb structures, its honeycomb structure has better compressive strength, in-plane shear stiffness, and bending load-bearing capacity. At the same time, through the configuration of the wood grain direction, the wood compression-resistant panel can effectively transfer the force to the sandwich layer, while the wood grain direction of the sandwich layer can directly and effectively bear the force from the wood compression-resistant panel, further improving the structural strength and reliability. The wood material and hollow grooves can effectively reduce the self-weight. The hollow grooves are filled with lightweight phase change energy storage foam for insulation, meeting various needs in the field of lightweight buildings. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the sandwich layer structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the base wood panel assembly of this utility model.

[0016] The labels in the attached diagram are as follows: 1. Sandwich layer; 2. Wooden compression-resistant panel; 3. Matrix wood panel assembly; 4. Phase change energy storage foaming agent; 5. Cold-pressed adhesive layer; 6. Horizontal plate; 7. First inclined plate; 8. Second inclined plate; 9. Connecting slot; 10. Hollow groove. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0018] Example: A lightweight, high-strength phase change energy storage wood flooring, as shown in the attached figure. Figure 1As shown, it includes a sandwich layer 1, and both the upper and lower surfaces of the sandwich layer 1 are provided with bonded wooden pressure-resistant panels 2; attached Figure 2 As shown, the sandwich layer 1 includes a base wood panel assembly 3 arranged vertically and having a honeycomb structure on the horizontal plane. A wooden pressure-resistant panel 2 is fixed to the upper and lower edges of the base wood panel assembly 3. The internal honeycomb structure of the base wood panel assembly 3 creates interspersed hollow grooves 10, which are filled with a phase change energy storage foaming agent 4. The wood grain direction of the base wood panel assembly 3 is parallel to the board surface and its arrangement direction. The wood grain direction of the wooden pressure-resistant panel 2 is parallel to the board surface and perpendicular to the wood grain direction of the base wood panel assembly 3. A cold-pressed adhesive layer 5 is present between the sandwich layer 1 and the wooden pressure-resistant panel 2. The cold-pressed adhesive layer 5 is obtained by cold-pressing epoxy resin at 7 MPa for 12 hours. (See attached...) Figure 3 As shown, the substrate wood panel assembly 3 includes multiple parallel horizontal panels 6. Multiple first inclined panels 7 with an included angle of 60° and multiple second inclined panels 8 with an included angle of 120° are inserted into the horizontal panels 6. The intersections of the first inclined panels 7 and the second inclined panels 8 are connected and located between the horizontal panels 6. Triangles share vertices, forming a honeycomb structure of alternating hexagons and triangles. The horizontal panels, first inclined panels, and second inclined panels are all pre-treated poplar wood panels. The preparation process involves delignifying the poplar veneer with alkaline sulfite (NaOH 2.5 mol / L + Na2SO3 0.4 mol / L) for 8 hours, washing with water until pH = 7, and then hot-pressing at 100℃ and 1.2 MPa. The shape is treated to eliminate internal stress; the spacing of the horizontal plate 6, the first inclined plate 7, and the second inclined plate 8 are all equal, forming regular equilateral triangles and regular hexagons; multiple connecting slots 9 with the wood grain are opened on the horizontal plate 6, the first inclined plate 7, and the second inclined plate 8, and the intersection of the horizontal plate 6 and the first inclined plate 7, the intersection of the horizontal plate 6 and the second inclined plate 8, and the intersection of the first inclined plate 7 and the second inclined plate 8 are connected by corresponding two connecting slots 9; the phase change energy storage foaming agent 4 is a foaming agent made from phase change energy storage material, which can be obtained commercially, such as Zero Carbon Future GPCMCOM-18-LID or Glacier Refrigerant LM-XR series, etc.

[0019] The above embodiments were applied to the analysis of flat compression modulus, bending stress, and peak impact load, and compared with those of traditional honeycomb structure wood panels, resulting in Table 1 below.

[0020] index honeycomb structure Improvement rate Flat modulus 243.5MPa 166％ Bending stress <![CDATA[181.8×10 3 MPa]]> 153％ Peak impact load 1695N 97％

[0021] Table 1

[0022] In summary, this utility model's honeycomb structure (composed of horizontal plate 6, first inclined plate 7, and second inclined plate 8), with its interlaced hexagonal and triangular geometric characteristics, achieves a 166% increase in flat compression modulus, a 153% increase in bending stress, and a 97% increase in peak impact load compared to traditional honeycomb structures. This effectively addresses the weakness of insufficient strength in wood materials and meets the load-bearing requirements of building structures. Using renewable wood materials as the main body (including the matrix wood panel group 3 and the wood compression-resistant panel 2), combined with the hollow design of the honeycomb structure, it significantly reduces its weight. It avoids the high energy consumption and carbon emission problems of metal-based materials, aligning with the trend of green building development. The matrix wood panel group 3... The empty slot 10 is filled with phase change energy storage wood powder and polyurethane composite material (phase change energy storage foaming agent 4), which has both thermal insulation and temperature regulation functions, making up for the lack of efficient thermal insulation in traditional sandwich structures. Moreover, the material has stable performance in humid environments and is applicable to a wider range of scenarios. Through the orthogonal configuration of the wood grain direction (the wood grain of the base wood board group 3 is perpendicular to the wood grain of the wood compression panel 2), an efficient force transmission path is formed, so that the load can be evenly transmitted to the base wood board group 3 through the wood compression panel 2, improving the overall structural collaborative stress-bearing capacity. The cold-pressed adhesive layer 5 adopts the epoxy resin cold-pressing process to ensure a firm connection between the sandwich layer 1 and the wood compression panel 2, avoiding the risk of delamination.

[0023] The above embodiments merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. Furthermore, in these embodiments, "up," "down," "left," "right," "front," and "back" represent relative positions only, not absolute positions. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A lightweight, high-strength phase change energy storage wood flooring, characterized in that: The system includes a sandwich layer (1), with wooden pressure-resistant panels (2) on both the top and bottom surfaces of the sandwich layer (1); the sandwich layer (1) includes a base wood board assembly (3) arranged vertically and having a honeycomb structure on the horizontal surface; the wooden pressure-resistant panels (2) are fixed to the top and bottom edges of the base wood board assembly (3); the base wood board assembly (3) has hollow grooves (10) spaced inside, and the hollow grooves (10) are filled with phase change energy storage foaming agent (4); the wood grain direction of the base wood board assembly (3) is parallel to the board surface and its arrangement direction, and the wood grain direction of the wooden pressure-resistant panels (2) is parallel to the board surface and perpendicular to the wood grain direction of the base wood board assembly (3).

2. The lightweight, high-strength phase change energy storage wood flooring according to claim 1, characterized in that: The sandwich layer (1) and the wooden pressure-resistant panel (2) have a cold-pressed adhesive layer (5).

3. The lightweight, high-strength phase change energy storage wood flooring according to claim 2, characterized in that: The cold-pressed adhesive layer (5) is a cold-curing adhesive.

4. The lightweight, high-strength phase change energy storage wood flooring according to claim 1, characterized in that: The base wood board assembly (3) includes multiple parallel horizontal boards (6), and multiple first inclined boards (7) with an included angle of 60° and multiple second inclined boards (8) with an included angle of 120° are provided on the horizontal boards (6). The intersection of the first inclined boards (7) and the second inclined boards (8) is connected and is located between the horizontal boards (6).

5. The lightweight, high-strength phase change energy storage wood flooring according to claim 4, characterized in that: The spacing between the horizontal plates (6), the first inclined plate (7), and the second inclined plate (8) are all equal.

6. The lightweight, high-strength phase change energy storage wood flooring according to claim 4, characterized in that: The horizontal plate (6), the first inclined plate (7) and the second inclined plate (8) are each provided with a plurality of connecting slots (9). The intersection of the horizontal plate (6) and the first inclined plate (7), the intersection of the horizontal plate (6) and the second inclined plate (8) and the intersection of the first inclined plate (7) and the second inclined plate (8) are connected by the corresponding two connecting slots (9).

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