A wood-based cross-shaped lattice sandwich structure and its preparation method

Abstract

This patent discloses a wood-based star-shaped lattice sandwich structure and its preparation method, relating to the field of building materials. The wood-based star-shaped lattice sandwich structure includes an upper panel, a lower panel, and a star-shaped lattice core layer. The star-shaped lattice sandwich structure has different configurations, with adjacent configurations symmetrically distributed. The upper panel, lower panel, and star-shaped core layer are connected by an adhesive. The wood-based star-shaped lattice sandwich structure of this invention has advantages such as lightweight, high strength, and high rigidity, showing great application potential in fields such as construction, aerospace, and automobile manufacturing. Its preparation method is simple, efficient, and low-cost, easily facilitating industrial production, and contributing to the efficient utilization and green development of wood resources.

Description

Technical fields:

[0001] This invention relates to the field of building materials, and in particular to a wood-based cross-shaped lattice sandwich structure and its preparation method. Background technology:

[0002] With the development of modern industry, the performance requirements for materials are becoming increasingly stringent, especially in terms of lightweight and high strength. Wood materials offer advantages such as being renewable and environmentally friendly, but traditional wood structures have limitations in strength and stiffness. Lattice sandwich structures, characterized by their lightweight and high strength, can effectively reduce structural weight while maintaining high load-bearing capacity, meeting the mechanical performance requirements of structures while reducing weight. This has garnered widespread attention in aerospace, automotive manufacturing, and construction. However, current wood-based lattice sandwich structures still require further optimization and improvement in terms of mechanical properties. Therefore, researching a novel wood-based cross-shaped lattice sandwich structure and its fabrication method is of great significance. Summary of the Invention:

[0003] The purpose of this invention is to provide a wood-based cross-shaped lattice sandwich structure and its preparation method, so as to solve the problems existing in the existing wood-based lattice sandwich structures.

[0004] A wood-based star-shaped dot matrix sandwich structure includes upper and lower panels and a star-shaped dot matrix core layer located between the panels. The upper and lower panels and the star-shaped dot matrix core layer are made of wood material, and are connected by an adhesive. The wood material is birch plywood. A method for preparing a wood-based star-shaped dot matrix sandwich structure is characterized by the following steps: cutting wood raw materials in one piece to produce boards and rods of suitable sizes; pasting the star-shaped dot matrix core layer onto the upper and lower panels to assemble the star-shaped dot matrix sandwich structure. In the bonding technology of the method for preparing the wood-based star-shaped dot matrix sandwich structure, the adhesive used is a mixture of epoxy resin and a curing agent in a specific ratio.

[0005] Design the dimensions and variable parameters of a wood-based star-shaped lattice sandwich structure, including core layer height, core layer width, core thickness, number of core layers, column width, upper and lower panel thickness, upper and lower panel length, upper and lower panel width, and adhesive ratio. Design the wood-based star-shaped lattice sandwich structure under different parameters for core layer height, core layer width, core thickness, number of core layers, and column width.

[0006] The upper and lower panels are parallel to each other, and both panels are perpendicular to the central cross-shaped dot matrix core layer.

[0007] Assemble the top panel, bottom panel, and core layer. The panels and core layer are connected by adhesive. The larger gaps in the core layer can be filled with flame-retardant materials, absorbent materials, thermal insulation materials, etc. Attached image description:

[0008] Figure 1 A technical roadmap for a wood-based cross-shaped lattice sandwich structure.

[0009] Figure 2 This is the front view of the core layer member. Detailed implementation method:

[0010] A 9mm thick plywood is selected as the raw material for the top and bottom panels. The wood raw material is cut in one piece and processed into boards and rods of suitable dimensions. The star-shaped lattice core layer is glued to the top and bottom panels to assemble a star-shaped lattice structure. The method for preparing the wood-based star-shaped lattice sandwich structure is characterized in that the adhesive used in the bonding technology is a mixture of epoxy resin and a curing agent in a specific ratio. Different combinations of core layer height, core layer width, core thickness, number of core layers, and column width are used, resulting in star-shaped lattice sandwich structures with different configurations and symmetrically distributed adjacent configurations. The top panel, bottom panel, and star-shaped lattice core layer are bonded together by applying an adhesive composed of epoxy resin and a curing agent in a specific ratio, followed by curing.

Claims

1. A wood-based cross-shaped lattice sandwich structure and its preparation method, characterized in that, It includes the top and bottom panels and the cross-shaped dot matrix core layer located between the panels.

2. The wood-based cross-shaped lattice sandwich structure and its preparation method according to claim 1, characterized in that, The top and bottom panels and the cross-shaped dot matrix core layer are made of birch plywood.

3. The wood-based cross-shaped lattice sandwich structure and its preparation method according to claim 1, characterized in that, The upper and lower panels are connected to the star-shaped dot matrix core layer by adhesive.

4. The wood-based cross-shaped lattice sandwich structure and its preparation method according to claim 1, characterized in that, 9mm thick birch plywood was selected as the raw material for the top and bottom panels.

5. The wood-based cross-shaped lattice sandwich structure and its preparation method according to claim 1, characterized in that, In the aforementioned bonding technology, the adhesive used is a mixture of epoxy resin and curing agent in a specific ratio.

6. The wood-based cross-shaped lattice sandwich structure and its preparation method according to claim 1, characterized in that, Design the dimensions and variable parameters of a wood-based star-shaped lattice sandwich structure, including core layer height, core layer width, core thickness, number of core layers, column width, upper and lower panel thickness, upper and lower panel length, upper and lower panel width, and adhesive ratio. Design the wood-based star-shaped lattice sandwich structure under different parameters for core layer height, core layer width, core thickness, number of core layers, and column width.

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