High toughness composite wood flooring

Abstract

The utility model relates to composite wood floor technical field discloses a kind of high toughness composite wood floor. Including composite wood floor main part, the upper end of the composite wood floor main part is fixedly connected with wear-resistant layer, the lower end of the composite wood floor main part is fixedly connected with balance layer, the lower end of the wear-resistant layer is provided with decorative layer, the upper end of the balance layer is fixedly connected with bionic honeycomb buffer layer, the hole wall of bionic honeycomb buffer layer surface is injected with silicone rubber elastomer. Breakthrough is realized in performance by bionic structure and material synergistic effect: the core mechanism structure carrier of bionic honeycomb buffer layer: hexagonal honeycomb unit (length of side 3-5mm) with recycled polycarbonate (PC) composite foam board as matrix, form natural stress dispersion topology;Silicone rubber elastomer is injected in hole wall, so controllable shear deformation occurs when being impacted, point load is converted into hole wall distributed load, thereby guaranteeing that vertical impact absorption rate is improved 40%+ level shear strength is greater than or equal to 8MPa.

Description

Technical Field

[0001] This utility model relates to the field of composite wood flooring technology, specifically a high-toughness composite wood flooring. Background Technology

[0002] Composite flooring is a type of flooring material that modifies the natural structure of wood to meet specific physical performance requirements. It mainly includes two categories: engineered wood flooring and solid wood composite flooring. In the market, "composite flooring" often refers to both engineered wood flooring and solid wood composite flooring. Different materials used in composite flooring will result in different performance characteristics.

[0003] As people's overall quality of life improves, they are paying more attention to the various performance aspects when choosing composite wood flooring. Traditional composite flooring often uses stress concentration between its composite layers, which can easily lead to insufficient toughness and subsequent delamination and cracking. To address this, we have proposed a high-toughness composite wood flooring. Utility Model Content

[0004] The main purpose of this invention is to overcome the shortcomings of existing technologies. As people's overall quality of life improves, they will pay more attention to the performance of composite wood flooring when choosing it. Traditional composite flooring often uses stress concentration between its composite layers, which can easily lead to insufficient toughness of the composite wood flooring and thus cause delamination and cracking.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-toughness composite wood flooring, comprising a composite wood flooring body, a wear-resistant layer fixedly connected to the upper end of the composite wood flooring body, a balancing layer fixedly connected to the lower end of the composite wood flooring body, a decorative layer provided at the lower end of the wear-resistant layer, a biomimetic honeycomb buffer layer fixedly connected to the upper end of the balancing layer, silicone rubber elastomer injected into the pore walls of the surface of the biomimetic honeycomb buffer layer, a bamboo-plastic composite reinforcement layer fixedly connected to the upper end of the biomimetic honeycomb buffer layer, and a gradient adhesive layer fixedly connected to the upper end of the biomimetic honeycomb buffer layer.

[0006] As a further preferred embodiment of this technical solution, the biomimetic honeycomb buffer layer is composed of recycled polycarbonate and composite foam board forming a regular hexagonal honeycomb structure.

[0007] As a further preferred embodiment of this technical solution, the surface of the bamboo-plastic composite reinforcing layer is provided with a plurality of reinforcing grooves, the inner wall of the reinforcing grooves is fixedly connected with bamboo fiber bundles, and the left and right ends of the bamboo fiber bundles are fixedly connected with recycled HDPE matrix.

[0008] As a further preferred embodiment of this technical solution, a symmetrical paving board is fixedly connected to the surface of the gradient adhesive layer, the gradient adhesive layer and the decorative layer are bonded together by formaldehyde-free MDI eco-adhesive, and a high-elastic foam layer is fixedly connected to the upper end of the gradient adhesive layer.

[0009] As a further preferred embodiment of this technical solution, the number of the high-elastic foam layers is set to several, and the several high-elastic foam layers are fixedly connected above the gradient adhesive layer, and the symmetrical paving plate connects the gradient adhesive layer and the decorative layer.

[0010] As a further preferred embodiment of this technical solution, the decorative layer is fixedly connected to the inner wall of the composite wood flooring body, and the decorative layer and the wear-resistant layer are bonded together with formaldehyde-free MDI eco-adhesive. Similarly, the biomimetic honeycomb buffer layer and the balance layer are bonded together with formaldehyde-free MDI eco-adhesive.

[0011] As a further preferred embodiment of this technical solution, the surface of the composite wood flooring body is fixedly connected with a butt bolt, and the surface of the composite wood flooring body is fixedly connected with a butt block, and the butt bolt and the butt block are engaged.

[0012] This utility model provides a high-toughness composite wood flooring with the following beneficial effects:

[0013] (1) This utility model sets up a biomimetic honeycomb buffer layer. The core mechanism of the biomimetic honeycomb buffer layer is a regular hexagonal honeycomb unit (side length 3-5mm) with recycled polycarbonate (PC) composite foam board as the matrix to form a natural stress dispersion topology; silicone rubber elastomer is injected into the pore wall, so that controllable shear deformation occurs when impacted, and the point load is converted into distributed bearing of the pore wall, thereby ensuring that the vertical impact absorption rate is increased by 40% and the horizontal shear strength is ≥8MPa.

[0014] (2) The bamboo fiber bundles of this utility model are arranged in parallel in one direction along the length of the floor to effectively maximize the axial tensile strength (≥350MPa); the bamboo fiber bundles adopt a three-layer layup with an angle deviation of ≤±2° to eliminate the weakness of anisotropy and suppress transverse cracking; the biomimetic honeycomb buffer layer dissipates instantaneous impact energy (such as heavy objects falling) and can protect the structural integrity of the decorative layer; the bamboo-plastic composite reinforcement layer provides continuous rigid support to resist bending creep (bending modulus ≥6000MPa); the gradient adhesive layer coordinates the interlayer deformation difference to ensure no delamination after impact (peel strength ≥4.8N / mm). Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the internal structure of the main body of the composite wood flooring of this utility model.

[0018] Figure 4 This is a schematic diagram of the biomimetic honeycomb buffer layer structure of this utility model.

[0019] In the diagram: 1. Wear-resistant layer; 2. Composite wood flooring body; 3. Balancing layer; 4. Button bolt; 5. Decorative layer; 6. Button block; 7. Bionic honeycomb buffer layer; 8. Gradient adhesive layer; 9. Formaldehyde-free MDI eco-adhesive; 10. High-elasticity foam layer; 11. Symmetrical paving board; 12. Silicone rubber elastomer; 13. Composite foam board; 14. Bamboo-plastic composite reinforcement layer; 15. Bamboo fiber bundle; 16. Recycled HDPE matrix. Detailed Implementation

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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.

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0023] like Figure 1-4As shown, a high-toughness composite wood flooring includes a composite wood flooring body 2. A wear-resistant layer 1 is fixedly connected to the upper end of the composite wood flooring body 2, and a balancing layer 3 is fixedly connected to the lower end of the body 2. A decorative layer 5 is provided at the lower end of the wear-resistant layer 1. A biomimetic honeycomb buffer layer 7 is fixedly connected to the upper end of the balancing layer 3. Silicone rubber elastomer 12 is injected into the pore walls of the surface of the biomimetic honeycomb buffer layer 7. A bamboo-plastic composite reinforcement layer 14 is fixedly connected to the upper end of the biomimetic honeycomb buffer layer 7, and a gradient adhesive layer 8 is fixedly connected to the upper end of the biomimetic honeycomb buffer layer 7. The biomimetic honeycomb buffer layer 7 consists of regular hexagonal honeycomb units (side length 3-5mm) and is made of recycled polycarbonate (PC) + cork particle composite foam, which can increase the vertical impact absorption rate by 40% (honeycomb structure disperses stress); the horizontal shear strength is ≥8MPa (silicone rubber toughened pore walls). The wear-resistant layer uses an aluminum oxide coating, which can effectively withstand hot-pressing composite.

[0024] The biomimetic honeycomb buffer layer 7 is composed of recycled polycarbonate and composite foam board 13 forming a regular hexagonal honeycomb structure. The biomimetic honeycomb buffer layer 7 dissipates instantaneous impact energy (such as the falling of a heavy object) and can protect the structural integrity of the decorative layer 5; the bamboo-plastic composite reinforcement layer 14 provides continuous rigid support to resist bending creep (bending modulus ≥6000MPa); the gradient adhesive layer 8 coordinates the interlayer deformation difference to ensure no delamination after impact (peel strength ≥4.8N / mm). Through the above settings, the high toughness of the composite wood flooring is guaranteed to the greatest extent.

[0025] The surface of the bamboo-plastic composite reinforcing layer 14 has several reinforcing grooves, and bamboo fiber bundles 15 are fixedly connected to the inner walls of the reinforcing grooves. Recycled HDPE matrix 16 is fixedly connected to both ends of the bamboo fiber bundles 15. The melt blending temperature curve of the bamboo fiber bundles 15 and the recycled HDPE matrix 16 allows for segmented temperature control to prevent degradation. The bamboo fiber bundles 15 are arranged unidirectionally and parallel along the length of the flooring, maximizing axial tensile strength (≥350MPa). The bamboo fiber bundles 15 employ a three-layer layup with an angle deviation ≤±2°, eliminating anisotropic weaknesses and suppressing transverse cracking.

[0026] The gradient adhesive layer 8 is fixedly connected to a symmetrical paving board 11. The gradient adhesive layer 8 and the decorative layer 5 are bonded together by a formaldehyde-free MDI eco-adhesive 9. The upper end of the gradient adhesive layer 8 is fixedly connected to a high-elastic foam layer 10.

[0027] The number of high-elastic foam layers 10 is set to several, and several high-elastic foam layers 10 are fixedly connected above the gradient adhesive layer 8. The symmetrical paving plate 11 connects the gradient adhesive layer 8 and the decorative layer 5.

[0028] The decorative layer 5 is fixedly connected to the inner wall of the composite wood flooring body 2. The decorative layer 5 and the wear-resistant layer 1 are bonded together with formaldehyde-free MDI eco-adhesive 9. The biomimetic honeycomb buffer layer 7 and the balance layer 3 are also bonded together with formaldehyde-free MDI eco-adhesive 9.

[0029] The surface of the composite wood flooring body 2 is fixedly connected with a butt bolt 4, and the surface of the composite wood flooring body 2 is fixedly connected with a butt block 6, and the butt bolt 4 and the butt block 6 are interlocked.

[0030] This utility model provides a high-toughness composite wood flooring, the specific working principle of which is as follows:

[0031] This composite wood flooring comprises, from top to bottom, a wear-resistant layer 1, a decorative layer 5, a gradient adhesive layer 8, a biomimetic honeycomb buffer layer 7, a bamboo-plastic composite reinforcement layer 14, and a balancing layer 3. The core structural mechanism of the biomimetic honeycomb buffer layer 7 is a hexagonal honeycomb unit (3-5mm side length) using recycled polycarbonate (PC) composite foam board 13 as the matrix, forming a natural stress dispersion topology. Silicone rubber elastomer 12 is injected into the pore walls, allowing for controlled shear deformation upon impact, transforming point loads into distributed load-bearing capacity within the pore walls, thus ensuring a 40%+ increase in vertical impact absorption and a horizontal shear strength ≥8MPa. The bamboo fiber bundles 15 are arranged in parallel in one direction along the length of the flooring to effectively maximize the axial tensile strength (≥350MPa); the bamboo fiber bundles 15 are three-layered with an angle deviation of ≤±2° to eliminate anisotropic weaknesses and suppress transverse cracking; the biomimetic honeycomb buffer layer 7 dissipates instantaneous impact energy (such as heavy objects falling) to protect the structural integrity of the decorative layer 5; the bamboo-plastic composite reinforcement layer 14 provides continuous rigid support to resist bending creep (bending modulus ≥6000MPa); the gradient adhesive layer 8 coordinates the interlayer deformation difference to ensure no delamination after impact (peel strength ≥4.8N / mm). Through the above settings, the high toughness of the composite wood flooring is guaranteed to the greatest extent.

[0032] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural, procedural, or functional transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this utility model patent.

Claims

1. A high-tenacity composite wood flooring comprising a composite wood flooring body (2), characterized in that, The upper end of the composite wood flooring body (2) is fixedly connected to a wear-resistant layer (1), the lower end of the composite wood flooring body (2) is fixedly connected to a balancing layer (3), the lower end of the wear-resistant layer (1) is provided with a decorative layer (5), the upper end of the balancing layer (3) is fixedly connected to a biomimetic honeycomb buffer layer (7), silicone rubber elastomer (12) is injected into the pore walls on the surface of the biomimetic honeycomb buffer layer (7), the upper end of the biomimetic honeycomb buffer layer (7) is fixedly connected to a bamboo-plastic composite reinforcement layer (14), and the upper end of the biomimetic honeycomb buffer layer (7) is fixedly connected to a gradient adhesive layer (8).

2. The high-toughness composite wood floor according to claim 1, wherein: The surface of the bamboo-plastic composite reinforcing layer (14) is provided with several reinforcing grooves, and bamboo fiber bundles (15) are fixedly connected to the inner wall of the reinforcing grooves. Recycled HDPE matrix (16) is fixedly connected to the left and right ends of the bamboo fiber bundles (15).

3. The high-toughness composite wood flooring according to claim 1, characterized in that: The gradient adhesive layer (8) is fixedly connected to a symmetrical paving board (11), and the gradient adhesive layer (8) and the decorative layer (5) are bonded together by formaldehyde-free MDI eco-adhesive (9). The upper end of the gradient adhesive layer (8) is fixedly connected to a high-elastic foam layer (10).

4. The high-toughness composite wood flooring according to claim 3, characterized in that: The number of the high-elastic foam layers (10) is set to several, and the several high-elastic foam layers (10) are fixedly connected above the gradient adhesive layer (8). The symmetrical paving plate (11) connects the gradient adhesive layer (8) and the decorative layer (5).

5. The high-toughness composite wood flooring according to claim 1, characterized in that: The decorative layer (5) is fixedly connected to the inner wall of the composite wood flooring body (2). The decorative layer (5) and the wear-resistant layer (1) are bonded together by formaldehyde-free MDI eco-adhesive (9). The biomimetic honeycomb buffer layer (7) and the balance layer (3) are also bonded together by formaldehyde-free MDI eco-adhesive (9).

6. The high-toughness composite wood flooring according to claim 1, characterized in that: The surface of the composite wood flooring body (2) is fixedly connected with a butt bolt (4), and the surface of the composite wood flooring body (2) is fixedly connected with a butt block (6), and the butt bolt (4) and the butt block (6) are engaged.

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