Flame-retardant structure of environment-friendly multi-layer plywood

Abstract

The utility model discloses a flame-retardant structure of environment-friendly multi-layer plywood, which comprises the multi-layer plywood, the multi-layer plywood is mainly formed by combining a surface layer, a multi-layer board, a back layer and a mounting layer, the thickness of the surface layer is larger than that of the back layer, the back layer is made of flame-retardant fibers, and the mounting layer is made of flame-retardant fibers. A plurality of flame-retardant holes are uniformly formed in the surface layer, a flame retardant I is poured into the flame-retardant holes, the flame retardant I is made of a phosphorus flame retardant, and the flame-retardant holes penetrate through the surface layer and are communicated with the interior of the multi-layer board to form a comprehensive flame-retardant structure, so that the spreading speed of a fire disaster is effectively reduced; the fireproof performance of buildings and furniture is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flame retardant multilayer boards, in particular to a flame retardant structure of an environmentally friendly multilayer plywood. Background Art

[0002] Plywood is one of the commonly used materials for furniture. A group of veneers are usually assembled and glued together in the direction of the wood grain of adjacent layers at right angles to each other. Usually, the surface panels and inner layers are symmetrically arranged on both sides of the center layer or the core. The slabs are made by staggering the glue-coated veneers in the direction of the wood grain, and are pressed under heating or unheating conditions. The number of layers is generally odd, and a few have even numbers. The physical and mechanical properties in the vertical and horizontal directions are slightly different. Commonly used types of plywood include three-ply board, five-ply board, etc. Plywood can improve the utilization rate of wood and is a major way to save wood. Multi-layer plywood, as a high-quality wood composite board, has been widely used in various fields and has many superior performance characteristics.

[0003] However, the fireproof performance of existing multi-layer plywood is not enough. The flame retardant materials and structures may only exist in the interlayer between the multi-layer boards, especially on the decorative panels connected to the surface and the installation panels on the back. The flame retardant materials are slightly insufficient, which is likely to accelerate the burning speed in a fire, thereby causing unavoidable disasters. For this reason, we propose an environmentally friendly flame retardant structure of multi-layer plywood to solve the above problems. Utility Model Content

[0004] 1. The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide an environmentally friendly flame retardant structure of multi-layer plywood. The surface layer and the back layer connected by the surface and back of the multi-layer board, combined with the flame retardant holes arranged between the surface layer and the multi-layer board surface, form a comprehensive flame retardant structure, which effectively reduces the spread of fire and improves the fire resistance of buildings and furniture. The phosphorus flame retardant in the flame retardant hole can release phosphorus gas at high temperature to form a carbon layer to prevent flame burning, thereby ensuring that the burning time in the surface layer is reduced.

[0005] The utility model also provides a flame retardant structure with the above-mentioned environmentally friendly multi-layer plywood, including: a multi-layer plywood, wherein the multi-layer plywood is mainly composed of a surface layer, a multi-layer board, a back layer and an installation layer, the thickness of the surface layer is greater than the thickness of the back layer, the material of the back layer is set to be flame retardant fiber, a plurality of flame retardant holes are evenly arranged inside the surface layer, the interior of the flame retardant holes is perfused with flame retardant 1, the material of the flame retardant 1 is a phosphorus-based flame retardant, and the flame retardant holes penetrate the surface layer and are connected with the interior of the multi-layer board.

[0006] According to the flame retardant structure of an environmentally friendly multi-layer plywood described in the utility model, the multi-layer board is composed of a wood fiber board 1, a wood fiber board 2, a wood fiber board 3 and a flame retardant board layer, which is conducive to forming a comprehensive flame retardant structure, effectively reducing the spread speed of fire, and improving the fire resistance of buildings and furniture.

[0007] According to the flame retardant structure of the environmentally friendly multi-layer plywood described in the utility model, the bottom surface of the surface layer is fixedly connected to the wood fiber board 1, and the fiber directions of the surface layer and the wood fiber board 1 are glued perpendicular to each other, so as to enhance the stability of the connection between the two.

[0008] According to the flame retardant structure of the environmentally friendly multi-layer plywood described in the utility model, two flame retardant board layers are provided, and the two flame retardant board layers are respectively located between the first wood fiber board, the second wood fiber board, and the third wood fiber board, so that a good flame retardant effect is formed between each layer of wood fiber boards.

[0009] According to the flame retardant structure of the environmentally friendly multi-layer plywood described in the utility model, the bottom surface of the wood fiber board 3 is fixedly connected to the back layer, and the flame retardant 2 is attached between the wood fiber board 3 and the back layer, so that the flame retardant effect can be achieved within a limited time.

[0010] According to the flame retardant structure of the environmentally friendly multi-layer plywood described in the utility model, the installation layer is located on the outer surface of the back layer, and the surface of the installation layer is set to be concave and convex, so as to enhance the firmness of the installation at the installation point.

[0011] According to the flame retardant structure of the environmentally friendly multi-layer plywood described in the utility model, a foam interlayer is fixedly connected inside the surface layer, and the material of the foam interlayer is set as polymer-based foam, so that the combustion speed is slowed down or combustion-inhibiting gas is generated when it encounters fire.

[0012] According to the flame retardant structure of the environmentally friendly multi-layer plywood described in the utility model, the outer surface of the surface layer and the outer surface of the installation layer are both attached with flame retardant materials, and the material of the flame retardant materials is silicide, which is beneficial to slow down the burning speed of the back layer of the multi-layer board.

[0013] Beneficial Effects

[0014] 2. Compared with the prior art, the flame retardant structure of the environmentally friendly multi-layer plywood forms a comprehensive flame retardant structure through the surface layer and the back layer connected by the surface and back of the multi-layer board, combined with the flame retardant holes set between the surface layer and the multi-layer board surface, which effectively reduces the spread of fire and improves the fire resistance of buildings and furniture. The phosphorus flame retardant in the flame retardant hole can release phosphorus gas at high temperature to form a carbon layer to prevent flame burning, ensuring that the burning time on the surface layer is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0016] Figure 1 This is the overall structural diagram of the flame retardant structure of the environmentally friendly multi-layer plywood of the utility model;

[0017] Figure 2 It is a bottom view of the flame retardant structure of the environmentally friendly multi-layer plywood of the utility model;

[0018] Figure 3 It is a schematic diagram of part of the internal structure of the flame retardant structure of the environmentally friendly multi-layer plywood of the utility model;

[0019] Figure 4 The flame retardant structure of the utility model environmentally friendly multi-layer plywood Figure 3 Enlarged view of point A in the middle.

[0020] Legend:

[0021] 1. Surface layer; 2. Multilayer board; 201. Wood fiberboard one; 202. Wood fiberboard two; 203. Wood fiberboard three; 204. Flame retardant board layer; 3. Back layer; 4. Installation layer; 5. Flame retardant hole; 6. Foam interlayer. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0023] Reference Figure 1-4 The utility model embodiment is a flame retardant structure of an environmentally friendly multi-layer plywood, which includes: a multi-layer plywood, which is mainly composed of a surface layer 1, a multi-layer board 2, a back layer 3 and a mounting layer 4, and is used to form a high-quality wood composite board. The thickness of the surface layer 1 is greater than the thickness of the back layer 3. The material of the back layer 3 is set as flame retardant fiber, which is used to slow down the spread of fire and form a flame retardant fixative. A plurality of flame retardant holes 5 are evenly arranged inside the surface layer 1. The interior of the flame retardant hole 5 is perfused with a flame retardant 1. The material of the flame retardant 1 is a phosphorus flame retardant, which can release phosphorus gas at high temperature to form a carbon layer to prevent flame burning. The flame retardant hole 5 penetrates the surface layer 1 and is connected with the inside of the multi-layer board 2, so that the wood fiber board 1 201 is not easy to reach the ignition point.

[0024] The multilayer board 2 is composed of a wood fiberboard 1 201, a wood fiberboard 202, a wood fiberboard 3 203 and a flame retardant board layer 204, which is conducive to forming a comprehensive flame retardant structure, effectively reducing the spread of fire, and improving the fire resistance of buildings and furniture. The bottom surface of the surface layer 1 is fixedly connected to the wood fiberboard 1 201, and the fiber directions of the surface layer 1 and the wood fiberboard 1 201 are perpendicularly glued to each other to enhance the stability of the connection between the two. Two flame retardant board layers 204 are provided, and the two flame retardant board layers 204 are respectively located between the wood fiberboard 1 201, the wood fiberboard 202, and the wood fiberboard 3 203, so that between each layer of wood fiberboard A good flame retardant effect is formed, the bottom surface of the wood fiber board 3 203 is fixedly connected to the back layer 3, and a flame retardant 2 is attached between the wood fiber board 3 203 and the back layer 3, so that the flame retardant effect can be achieved within a limited time, the installation layer 4 is located on the outer surface of the back layer 3, and the surface of the installation layer 4 is set to be concave and convex, which is convenient for enhancing the firmness of the installation at the installation point, and the inside of the surface layer 1 is fixedly connected with a foam interlayer 6, and the material of the foam interlayer 6 is polymer-based foam, so that when it encounters fire, its burning speed is slowed down or a combustion-inhibiting gas is generated, and the outer surface of the surface layer 1 and the outer surface of the installation layer 4 are both attached with flame retardant materials, and the material of the flame retardant materials is silicate, which is beneficial to blocking the burning speed of the back layer 3 of the multilayer board 2.

[0025] Working principle: The connecting material between the multi-layer plywood is an environmentally friendly adhesive. When making the flame-retardant structure of the multi-layer plywood, the flame-retardant board layer 204 is respectively bonded between the wood fiber board 1 201, the wood fiber board 202, and the wood fiber board 3 203, and then combined with the flame-retardant hole 5 and the foam interlayer 6 inside the surface layer 1, and then combined with the flame retardant 1 in the flame-retardant hole 5 and the flame-retardant fiber material of the back layer 3, not only a comprehensive flame-retardant structure is formed, but also the spread speed of the fire and the burning speed are effectively reduced.

[0026] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A flame retardant structure of an environmentally friendly multi-layer plywood, characterized in that: include: A multilayer plywood, the multilayer plywood mainly comprising a surface layer (1), a multilayer board (2), a back layer (3) and an installation layer (4), the thickness of the surface layer (1) being greater than the thickness of the back layer (3), the material of the back layer (3) being flame-retardant fiber, a plurality of flame-retardant holes (5) being evenly arranged inside the surface layer (1), the interior of the flame-retardant holes (5) being infused with a flame retardant 1, the material of the flame retardant 1 being a phosphorus-based flame retardant, the flame-retardant holes (5) penetrating the surface layer (1) and being connected with the interior of the multilayer board (2).

2. The flame retardant structure of an environmentally friendly multilayer plywood according to claim 1, characterized in that: The multilayer board (2) is composed of a wood fiber board 1 (201), a wood fiber board 2 (202), a wood fiber board 3 (203) and a flame retardant board layer (204).

3. The flame retardant structure of an environmentally friendly multi-layer plywood according to claim 1, characterized in that: The bottom surface of the surface layer (1) is fixedly connected to the wood fiber board (201), and the fiber directions of the surface layer (1) and the wood fiber board (201) are glued to each other perpendicularly.

4. The flame retardant structure of an environmentally friendly multilayer plywood according to claim 2, characterized in that: Two flame retardant board layers (204) are provided, and the two flame retardant board layers (204) are respectively located between the wood fiber board one (201), the wood fiber board two (202), and the wood fiber board three (203).

5. The flame retardant structure of an environmentally friendly multi-layer plywood according to claim 2, characterized in that: The bottom surface of the wood fiber board three (203) is fixedly connected to the back layer (3), and the flame retardant two is attached between the wood fiber board three (203) and the back layer (3).

6. The flame retardant structure of an environmentally friendly multi-layer plywood according to claim 1, characterized in that: The mounting layer (4) is located on the outer surface of the back layer (3), and the surface of the mounting layer (4) is configured to be concave-convex.

7. The flame retardant structure of an environmentally friendly multi-layer plywood according to claim 1, characterized in that: A foam interlayer (6) is fixedly connected to the interior of the surface layer (1), and the material of the foam interlayer (6) is polymer-based foam.

8. The flame retardant structure of an environmentally friendly multi-layer plywood according to claim 1, characterized in that: The outer surface of the surface layer (1) and the outer surface of the installation layer (4) are both attached with flame retardant material, and the material of the flame retardant material is silicide.

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