Fireproof flame-retardant composite plywood

Abstract

The utility model discloses a fire -retardant type composite plywood belongs to plywood technical field. A fire -retardant type composite plywood, including core board, the core board outer wall has been glued graphene aerogel heat -insulating cotton no.

Description

Technical Field

[0001] This utility model relates to the field of plywood technology, and more specifically, to a fire-resistant and flame-retardant composite plywood. Background Technology

[0002] Plywood is a common type of engineered wood product. It is made from logs by rotary cutting or slicing to create thin veneers. Multiple layers of veneers are then stacked perpendicular to each other, with adhesive applied between the layers, and finally bonded together under heat and pressure. It typically has an odd number of layers, such as three, five, or seven. Plywood is characterized by high structural strength, good stability, resistance to deformation, and large sheet size. It is widely used in furniture manufacturing, construction and decoration, and vehicle and shipbuilding, making full use of timber resources while meeting the needs of various applications.

[0003] Existing plywood often lacks edge protection during practical use, making its edges highly susceptible to impacts and scratches during handling, installation, or daily use, resulting in chipping, cracking, and delamination. This damage not only affects the plywood's appearance but also reduces its overall structural strength and shortens its lifespan. Furthermore, unprotected plywood edges are easily susceptible to moisture and insect infestation, accelerating aging and damage, thus impacting the stability and safety of the plywood in various applications such as furniture manufacturing and building decoration. Furthermore, while existing plywood is coated with fire-retardant paint on both sides to improve its flame-retardant properties during actual use, this method of protection has certain limitations. The fire-retardant paint only acts on the surface of the board. Although it can slow down the surface burning rate, its heat insulation ability is not ideal and it is difficult to prevent heat from being quickly conducted into the interior of the board. During long-term burning, high temperatures will quickly penetrate the coating. Since the inner core board is mostly made of flammable wood, it is difficult to maintain structural stability under continuous high temperatures. It is very easy to carbonize and deform, which will lead to the collapse of the entire board. This undoubtedly brings great trouble to actual use.

[0004] In view of this, we propose a fire-resistant and flame-retardant composite plywood. Utility Model Content

[0005] 1. Technical problems to be solved The purpose of this invention is to provide a fire-resistant and flame-retardant composite plywood to solve the problems mentioned in the background art.

[0006] 2. Technical Solution A fire-resistant and flame-retardant composite plywood includes a core board, wherein the outer wall of the core board is bonded with graphene aerogel insulation cotton I, ceramic fiber pad I, graphene aerogel insulation cotton II, ceramic fiber pad II and flame-retardant silicone rubber, and a protective component is provided on the outside of the core board.

[0007] Preferably, the graphene aerogel insulation cotton and the ceramic fiber pad are bonded together by an adhesive, and the graphene aerogel insulation cotton is bonded to the front of the core board.

[0008] Preferably, the graphene aerogel insulation cotton II and the ceramic fiber pad II are bonded together by an adhesive, the graphene aerogel insulation cotton II is bonded to the outer wall behind the core board, and the flame-retardant silicone rubber is bonded to the edge of the core board.

[0009] Preferably, the protective component includes a fireproof board one and a fireproof board two, and the core board is disposed between the fireproof board one and the fireproof board two.

[0010] Preferably, an insertion block is provided on one outer wall of the fireproof board, and screw holes are provided on the outer wall of the insertion block.

[0011] Preferably, the outer wall of the second fireproof board has an interface that matches the plug-in block, and the inner wall of the multiple interfaces has a through hole. The first fireproof board and the second fireproof board are fixed by screws.

[0012] 3. Beneficial effects Compared with the prior art, the advantages of this utility model are as follows: In actual use, fireproof board one and protective board two are respectively set on the front and rear sides of the composite plywood. The two fireproof boards can wrap the composite plywood, and flame-retardant silicone rubber is bonded to the outer wall of the core board edge. This can block and seal the gap at the joint of fireproof board one and protective board two, thereby better reducing collisions and scratches at the edge of the composite plywood, thus reducing the occurrence of chipping, cracking, delamination and other phenomena. It can also reduce the situation where flames directly act on the edge of the core board and cause it to burn. In addition, it can also reduce the situation where moisture enters and causes the plywood to become moldy. Secondly, graphene aerogel insulation and ceramic fiber pads are bonded to the front and rear outer walls of the core board, respectively. The ceramic fiber pads and graphene aerogel insulation can better reduce the high temperature conduction, so that it can play a multi-layer composite insulation effect in high temperature environment and reduce the impact of continuous high temperature on the structural performance of the core board. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall disassembly structure of this utility model; Figure 2 This is a schematic diagram of the overall installation structure of this utility model; Figure 3 This is a schematic diagram of structure A of the present invention; Figure 4 This is a schematic diagram of structure B of the present invention; Explanation of the numbers in the diagram: 100, core board; 110, flame-retardant silicone rubber; 120, graphene aerogel insulation cotton I; 130, ceramic fiber pad I; 140, graphene aerogel insulation cotton II; 150, ceramic fiber pad II; 200, fireproof board I; 210, plug-in block; 300, fireproof board II; 310, plug-in interface; 320, through-hole. Detailed Implementation

[0014] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0015] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0017] Please see Figure 1-4 This utility model provides a technical solution: A fire-resistant and flame-retardant composite plywood includes a core board 100, on the outer wall of which are bonded graphene aerogel insulation cotton 120, ceramic fiber pad 130, graphene aerogel insulation cotton 140, ceramic fiber pad 150 and flame-retardant silicone rubber 110, and protective components are provided on the outside of the core board 100.

[0018] In some embodiments, flame-retardant silicone rubber 110 is made from silicone rubber as a base material, by adding inorganic flame retardants such as aluminum hydroxide and magnesium hydroxide, or organic flame retardants containing elements such as phosphorus and nitrogen, through processes such as mixing and vulcanization. Its flame-retardant principle is based on the synergistic effect of multiple mechanisms: when heated, the inorganic flame retardant decomposes and absorbs heat, reducing the system temperature; at the same time, it releases water of crystallization to dilute the concentration of combustible gases and inhibit combustion; the organic flame retardant forms a dense carbon layer at high temperatures, isolating oxygen and heat conduction, preventing the spread of flames, and ultimately achieving highly efficient flame-retardant performance.

[0019] Specifically, the graphene aerogel insulation cotton-120 and the ceramic fiber pad-130 are bonded together with an adhesive, with the graphene aerogel insulation cotton-120 bonded to the front of the core board 100.

[0020] Furthermore, the graphene aerogel insulation cotton 2 140 and the ceramic fiber pad 2 150 are bonded together with an adhesive. The graphene aerogel insulation cotton 2 140 is bonded to the outer wall behind the core board 100, and the flame-retardant silicone rubber 110 is bonded to the edge of the core board 100.

[0021] In some embodiments, the adhesive used for bonding is a fire-retardant adhesive. This fire-retardant adhesive typically uses a high-molecular polymer containing flame-retardant elements such as phosphorus, nitrogen, and halogens as a matrix, such as phenolic resin or epoxy resin, with added inorganic flame-retardant fillers such as aluminum hydroxide and magnesium hydroxide, and synergists such as silicon-based and boron-based additives. Its working principle is that when heated, the matrix polymer decomposes to form a char layer, blocking heat and oxygen; the inorganic filler absorbs heat and decomposes to release water vapor, diluting flammable gases; and the synergists enhance the strength and stability of the char layer. These multiple effects work synergistically to not only achieve strong adhesion to the materials but also endow them with excellent flame-retardant properties, effectively delaying the spread of fire.

[0022] Furthermore, the protective components include fireproof board 200 and fireproof board 300, with core board 100 disposed between fireproof board 200 and fireproof board 300.

[0023] Furthermore, the outer wall of the fireproof board 200 is provided with a plug-in block 210, and the outer wall of the plug-in block 210 is provided with screw holes.

[0024] It is worth noting that the outer wall of the second fireproof board 300 is provided with a plug interface 310 that matches the plug block 210, and the inner wall of the multiple plug interfaces 310 is provided with a through hole 320. The first fireproof board 200 and the second fireproof board 300 are fixed with screws, which facilitates the combined installation of the two fireproof boards.

[0025] In some embodiments, fireproof board 200 and fireproof board 300 use inorganic non-combustible materials as the core, such as magnesium oxide board and calcium silicate board, with an intumescent fireproof coating on the surface. Magnesium oxide board uses magnesium oxide and magnesium chloride as the base material, which is cured to form a high-temperature resistant skeleton. When exposed to fire, the coating expands to form a honeycomb-like carbon layer, blocking heat conduction. Calcium silicate board is reinforced with calcium and silicon materials and fibers, suitable for surface protection in direct contact with flames. All of the above are existing technologies. Fireproof board 200 and fireproof board 300 can also be bonded to the front and rear outer walls of the plywood using the same adhesive method. All of the above are existing technologies.

[0026] Working Principle: In actual use, fireproof board 200 and protective board 300 are respectively installed on the front and back sides of the composite plywood. The two fireproof boards can wrap the composite plywood. Flame-retardant silicone rubber 110 is adhered to the outer wall of the core board 100. This can block and seal the gap at the joint of fireproof board 200 and protective board 300, thereby reducing collisions and scratches at the edges of the composite plywood, thus reducing the occurrence of chipping, cracking, and delamination. It can also reduce the possibility of flames directly acting on the edges of the core board 100 and causing it to burn. In addition, it can reduce the possibility of moisture entering and causing the plywood to mold. Furthermore, graphene aerogel insulation and ceramic fiber pads are respectively adhered to the front and back outer walls of the core board 100. The ceramic fiber pads and graphene aerogel insulation can better reduce the heat conduction, so that it can play a multi-layer composite insulation role in high-temperature environments and reduce the impact of continuous high temperature on the structural performance of the core board 100.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

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