High-performance fireproof shaving board

Abstract

The utility model discloses a high-performance fireproof shaving board, which relates to the technical field of composite boards and comprises a shaving base board, a first expanded graphite flame-retardant layer and a second expanded graphite flame-retardant layer, the shaving base board is provided with a first board surface and a second board surface which are opposite to each other, and the first board surface and the second board surface are respectively provided with a zigzag connecting structure; the first expanded graphite flame-retardant layer is laid on the first plate surface, and the first expanded graphite flame-retardant layer is bonded with the connecting structure of the first plate surface; and the second expanded graphite flame-retardant layer is laid on the second plate surface, and the second expanded graphite flame-retardant layer is bonded with the connecting structure of the second plate surface. The high-performance fireproof shaving board disclosed by the utility model has good fireproof performance and also has good interlayer shearing resistance.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of composite board, especially to a high-performance fireproof shaving board. BACKGROUND

[0002] Traditional shaving boards are mostly made of wood chips and adhesive, and their fireproof performance depends on the addition of flame retardants, but there are problems such as uneven distribution of flame retardants, unstable fireproof effect, and easy reduction of board strength. Shaving boards with single-layer or simple laminated structure are difficult to balance fireproof performance and mechanical properties. SUMMARY

[0003] The utility model discloses at least one of the technical problems existing in the prior art. To this end, the utility model provides a high-performance fireproof shaving board, which has good fireproof performance and also has good interlayer shear resistance.

[0004] According to the high-performance fireproof shaving board of the utility model embodiment, the shaving base board has opposite first and second board surfaces, and the first and second board surfaces are provided with sawtooth-shaped connecting structures;

[0005] The first expanded graphite flame-retardant layer is laid on the first board surface, and the first expanded graphite flame-retardant layer is bonded to the connecting structure of the first board surface.

[0006] The second expanded graphite flame-retardant layer is laid on the second board surface, and the second expanded graphite flame-retardant layer is bonded to the connecting structure of the second board surface.

[0007] According to the high-performance fireproof shaving board of the utility model embodiment, the first and second expanded graphite flame-retardant layers are arranged on the two sides of the shaving base board, which can provide better fire protection for the shaving base board. The double-sided flame-retardant layers expand and carbonize at high temperatures to form a physical barrier, prolonging the fire resistance time. The board surface of the shaving base board is provided with sawtooth-shaped connecting structures, and the first and second expanded graphite flame-retardant layers can be embedded in the sawtooth-shaped connecting structures when they are hot-pressed and bonded to the shaving base board. On the one hand, this increases the interlayer contact area and improves the overall structural stability, and on the other hand, it improves the interlayer shear resistance.

[0008] According to some embodiments of the utility model, the shaving base board comprises wood chips and adhesive, and the particle size of the wood chips is 1-3 mm.

[0009] According to some embodiments of the utility model, the tooth depth of the connecting structure is 2-3 mm, and the tooth pitch of the connecting structure is 3-5 mm.

[0010] According to some embodiments of the present application, the first connecting piece is in the form of a strip, the first connecting piece comprises a plurality of first fibers, and the plurality of first fibers are interlaced to form a plurality of grid units.

[0011] According to some embodiments of the present application, the first connecting piece is in the form of a strip, the first connecting piece comprises a plurality of first fibers, and the plurality of first fibers are interlaced to form a plurality of grid units.

[0012] According to some embodiments of the present application, the first connecting piece is in the form of a strip, the first connecting piece comprises a plurality of first fibers, and the plurality of first fibers are interlaced to form a plurality of grid units.

[0013] According to some embodiments of the present application, the first connecting piece is in the form of a strip, the first connecting piece comprises a plurality of first fibers, and the plurality of first fibers are interlaced to form a plurality of grid units.

[0014] According to some embodiments of the present application, the first connecting piece is in the form of a strip, the first connecting piece comprises a plurality of first fibers, and the plurality of first fibers are interlaced to form a plurality of grid units.

[0015] According to some embodiments of the present application, the first connecting piece is in the form of a strip, the first connecting piece comprises a plurality of first fibers, and the plurality of first fibers are interlaced to form a plurality of grid units.

[0016] According to some embodiments of the present application, the first connecting piece is in the form of a strip, the first connecting piece comprises a plurality of first fibers, and the plurality of first fibers are interlaced to form a plurality of grid units.

[0017] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be learned from the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application will be further described below in conjunction with the drawings and embodiments, wherein:

[0019] Figure 1 The structure of the high-performance fireproof shaving board of the present application is shown in the figure.

[0020] Figure 2 Structure schematic view of the shavings base plate and the first expanded graphite flame-retardant layer before hot pressing of the embodiment of the present application;

[0021] Figure 3 Local structure schematic view of the bonding surface of the shavings base plate and the first expanded graphite flame-retardant layer of the embodiment of the present application;

[0022] Figure 4 Structure schematic view of the high-performance fireproof shavings board with the flame-retardant fiber net of the embodiment of the present application.

[0023] Reference signs:

[0024] Shavings base plate 100, first expanded graphite flame-retardant layer 200, second expanded graphite flame-retardant layer 300, first connecting piece 400, second connecting piece 500, flame-retardant fiber net 600. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation on the present application.

[0026] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation on the present application.

[0027] In the description of the present application, multiple means two or more. If there is a description of first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0028] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application according to the specific content of the technical solution.

[0029] Referring to Figure 1 The high-performance fireproof shavings board of one embodiment of the present application includes a shavings base plate 100, a first expanded graphite flame-retardant layer 200, and a second expanded graphite flame-retardant layer 300.

[0030] The particleboard baseboard 100 has a first surface and a second surface, both of which have a serrated connecting structure, such as... Figure 3 As shown. Figure 3 The serrated connection structure between the particleboard baseboard 100 and the first expanded graphite flame-retardant layer 200 is shown. Figure 3 The second expanded graphite flame retardant layer 300 is not shown. The first expanded graphite flame retardant layer 200 is laid on the first plate surface and is bonded to the connection structure of the first plate surface; the second expanded graphite flame retardant layer 300 is laid on the second plate surface and is bonded to the connection structure of the second plate surface.

[0031] The first expanded graphite flame-retardant layer 200 and the second expanded graphite flame-retardant layer 300 are respectively disposed on both sides of the particleboard 100, which can provide better fire protection for the particleboard 100. The double-sided flame-retardant layers expand and carbonize at high temperature, forming a physical barrier and extending the fire resistance time. The particleboard 100 has a sawtooth-shaped connection structure on its surface. When the first expanded graphite flame-retardant layer 200 and the second expanded graphite flame-retardant layer 300 are hot-pressed and bonded to the particleboard 100, the first expanded graphite flame-retardant layer 200 and the second expanded graphite flame-retardant layer 300 can be embedded in the sawtooth shape of the connection structure on the corresponding surface of the board. On the one hand, this increases the interlayer contact area and improves the overall structural stability; on the other hand, it improves the interlayer shear resistance.

[0032] It is important to understand that the first expanded graphite flame-retardant layer 200 can be composed of expanded graphite, aluminum hydroxide, and an adhesive, and then bonded to the particleboard baseboard 100 by hot pressing. Expanded graphite is a layered material in which the carbon atoms in its molecular structure are arranged in a planar form and connected to neighboring carbon atoms by covalent bonds. This unique structure gives expanded graphite excellent flame-retardant properties at high temperatures. When expanded graphite is exposed to high temperatures, the carbon atoms in its layered structure rapidly expand and contract, causing the material to expand and form a sealed protective layer, thereby preventing the spread of flames and smoke. Furthermore, expanded graphite forms a porous carbonized layer after heating, which isolates oxygen, prevents the escape of combustible gases, and reduces smoke production, thus achieving the purpose of flame retardancy. Aluminum hydroxide begins to decompose under high temperatures, releasing water of crystallization and absorbing heat. The adhesive can be a water-based phenolic resin.

[0033] Particleboard 100 mainly consists of wood chips, which are mixed with adhesive and then hot-pressed together.

[0034] It needs to be understood that the shavings base plate 100 can be made first, and the sawtooth connection structure on the surface of the shavings base plate 100 can be generated when the shavings base plate 100 is hot-pressed by a hot-pressing mold. For example, the surface of the hot-pressing mold is provided with a sawtooth structure, and after hot-pressing the mixture of wood chips and adhesive, a sawtooth connection structure is left on the surface. After the shavings base plate 100 is made, the mixture of expanded graphite, aluminum hydroxide and adhesive is laid on the surface of the shavings base plate 100, and after hot-pressing, the first expanded graphite flame-retardant layer 200 and the second expanded graphite flame-retardant layer 300 are formed respectively. It needs to be understood that during the hot-pressing process, the mixture of expanded graphite, aluminum hydroxide and adhesive can completely fill the sawtooth connection structure of the shavings base plate 100, achieving tight bonding. That is, the first expanded graphite flame-retardant layer 200 and the second expanded graphite flame-retardant layer 300 can respectively embed the sawtooth of the connection structure on the corresponding surface, increase the interlayer contact area, improve the overall structural stability, and improve the interlayer shear resistance performance.

[0035] Preferably, it can be understood that the shavings base plate 100 includes wood chips and adhesive, wherein the particle size of the wood chips is 1mm-3mm.

[0036] The wood chips with a particle size distribution of 1mm-3mm have moderate flowability when laid, can be uniformly distributed, and reduce the risk of local accumulation or voids. Further, the wood chips can also be classified by particle size, for example, 1mm-1.5mm is one class, 1.5mm-2mm is two classes, and 2mm-3mm is three classes. Mixing the wood chips of one class, two classes and three classes according to the proportion can achieve the effect similar to the aggregate grading.

[0037] It can be understood that the tooth depth of the connection structure is preferably 2mm-3mm, and the tooth pitch of the connection structure is preferably 3mm-5mm.

[0038] While ensuring the bonding stability of the first expanded graphite flame-retardant layer 200 and the second expanded graphite flame-retardant layer 300 to the shavings base plate 100, it also matches the flow characteristics of the raw materials, reduces the overflow of the raw materials during hot-pressing, and improves the filling rate of the raw materials to the sawtooth connection structure.

[0039] Referring to FIG. 1, Figure 2 It can be understood that the shavings base plate 100 is provided with a flexible first connecting piece 400 and a flexible second connecting piece 500, one end of the first connecting piece 400 is arranged in the interlayer of the shavings base plate 100, the other end of the first connecting piece 400 is arranged in the interlayer of the first expanded graphite flame-retardant layer 200, one end of the second connecting piece 500 is arranged in the interlayer of the shavings base plate 100, and the other end of the second connecting piece 500 is arranged in the interlayer of the second expanded graphite flame-retardant layer 300.

[0040] In the process of hot pressing the shaving base plate 100, the first connecting piece 400 and the second connecting piece 500 can be embedded between the layers of the shaving base plate 100. The other end of the first connecting piece 400 extends out of the plate body of the shaving base plate 100 and is located on one side of the first plate surface, for embedding into the first expanded graphite flame-retardant layer 200; the other end of the second connecting piece 500 extends out of the plate body of the shaving base plate 100 and is located on one side of the second plate surface, for embedding into the second expanded graphite flame-retardant layer 300. It should be understood that the first expanded graphite flame-retardant layer 200 is formed on the first plate surface by hot pressing, so the first connecting piece 400 is embedded in the first expanded graphite flame-retardant layer 200 during the hot pressing process of the first expanded graphite flame-retardant layer 200. The connection mode of the second connecting piece 500 and the second expanded graphite flame-retardant layer 300 is the same as that of the first connecting piece 400 and the first expanded graphite flame-retardant layer 200.

[0041] It can be understood that the first connecting piece 400 is in the form of a strip, the first connecting piece 400 includes a plurality of first fibers, and the plurality of first fibers are interlaced to form a plurality of grid units; the second connecting piece 500 is also in the form of a strip, the second connecting piece 500 includes a plurality of second fibers, and the plurality of second fibers are interlaced to form a plurality of grid units.

[0042] The first connecting piece 400 forms a mesh-shaped strip, which can improve the bonding performance between the first connecting piece 400 and the shaving base plate 100, and also improve the bonding performance between the first connecting piece 400 and the first expanded graphite flame-retardant layer 200. The second connecting piece 500 forms a mesh-shaped strip, which can improve the bonding performance between the second connecting piece 500 and the shaving base plate 100, and also improve the bonding performance between the second connecting piece 500 and the second expanded graphite flame-retardant layer 300.

[0043] It can be understood that the shaving base plate 100 is provided with a plurality of first connecting pieces 400, the plurality of first connecting pieces 400 are arranged in parallel to each other, and the plurality of first connecting pieces 400 are arranged and distributed along a direction perpendicular to the length direction of the first connecting piece 400; the shaving base plate 100 is provided with a plurality of second connecting pieces 500, the plurality of second connecting pieces 500 are arranged in parallel to each other, and the plurality of second connecting pieces 500 are arranged and distributed along a direction perpendicular to the length direction of the second connecting piece 500.

[0044] The plurality of first connecting pieces 400 can increase the connection points between the first expanded graphite flame-retardant layer 200 and the shaving base plate 100, and improve the bonding effect; similarly, the plurality of second connecting pieces 500 can increase the connection points between the second expanded graphite flame-retardant layer 300 and the shaving base plate 100, and improve the bonding effect.

[0045] Referring to Figure 4 It can be understood that the shaving base plate 100 is provided with a plurality of first connecting pieces 400, the plurality of first connecting pieces 400 are arranged in parallel to each other, and the plurality of first connecting pieces 400 are arranged and distributed along a direction perpendicular to the length direction of the first connecting piece 400; the shaving base plate 100 is provided with a plurality of second connecting pieces 500, the plurality of second connecting pieces 500 are arranged in parallel to each other, and the plurality of second connecting pieces 500 are arranged and distributed along a direction perpendicular to the length direction of the second connecting piece 500.

[0046] The fire-retardant fiber web 600 can use one of glass fiber, basalt fiber, aramid fiber. The fire-retardant fiber web 600 is arranged between the layers of the shaving base layer board 100, and can disperse stress and improve the bending strength of the board.

[0047] It can be understood that the adhesive layer is arranged between the shaving base layer board 100 and the first expanded graphite fire-retardant layer 200 and between the shaving base layer board 100 and the second expanded graphite fire-retardant layer 300.

[0048] The adhesive layer is used to further improve the adhesion between the shaving base layer board 100 and the first expanded graphite fire-retardant layer 200 and between the shaving base layer board 100 and the second expanded graphite fire-retardant layer 300. It should be understood that the adhesive layer can be water-based phenolic resin glue, modified epoxy resin glue or silane modified polyether glue.

[0049] It can be understood that the surface of the first expanded graphite fire-retardant layer 200 is coated with a melamine resin coating, and the surface of the second expanded graphite fire-retardant layer 300 is also coated with a melamine resin coating.

[0050] The melamine resin coating can further protect the high-performance fireproof shaving board, improve its water resistance, and also improve certain fireproof performance. The melamine resin coating can also inhibit the initiation and expansion of micro-cracks of the first expanded graphite fire-retardant layer 200 and the second expanded graphite fire-retardant layer 300. Preferably, the thickness of the melamine resin coating is 0.2mm-1mm.

[0051] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the utility model.

Claims

1. A high-performance fire-resistant shaving board, characterized by, The application relates to a wood shaving base plate (100) comprising: a first plate surface and a second plate surface, both provided with sawtooth-shaped connecting structures; a first expanded graphite fire-retardant layer (200) laid on the first plate surface and bonded with the connecting structures on the first plate surface; and a second expanded graphite fire-retardant layer (300) laid on the second plate surface and bonded with the connecting structures on the second plate surface. The wood shaving base plate (100) comprises wood shavings and a binder, wherein the wood shavings have a particle size of 1-3 mm. The sawtooth-shaped connecting structures have a tooth depth of 2-3 mm and a tooth pitch of 3-5 mm. The wood shaving base plate (100) is provided with flexible first connecting members (400) and flexible second connecting members (500), one end of each of the first connecting members (400) is arranged between layers of the wood shaving base plate (100), the other end of each of the first connecting members (400) is arranged between layers of the first expanded graphite fire-retardant layer (200), one end of each of the second connecting members (500) is arranged between layers of the wood shaving base plate (100), and the other end of each of the second connecting members (500) is arranged between layers of the second expanded graphite fire-retardant layer (300).

2. The high-performance fire rated shaving board of claim 1, wherein, The first connecting members (400) are in the form of strips and comprise a plurality of first fibers, the plurality of first fibers are interlaced to form a plurality of grid units, and the second connecting members (500) are also in the form of strips and comprise a plurality of second fibers, the plurality of second fibers are interlaced to form a plurality of grid units.

3. The high-performance fire rated shaving board of claim 1, wherein, The wood shaving base plate (100) is provided with a plurality of the first connecting members (400), the plurality of the first connecting members (400) are arranged in parallel to each other and along a direction perpendicular to the length direction of the first connecting members (400), and the wood shaving base plate (100) is provided with a plurality of the second connecting members (500), the plurality of the second connecting members (500) are arranged in parallel to each other and along a direction perpendicular to the length direction of the second connecting members (500).

4. The high-performance fire rated shaving board of claim 1, wherein, The wood shaving base plate (100) is provided with a fire-retardant fiber mesh (600) laid between layers of the wood shaving base plate (100).

5. The high-performance fire rated shaving board of claim 4, wherein, The wood shaving base plate (100) and the first expanded graphite fire-retardant layer (200) are provided with an adhesive layer therebetween, and the wood shaving base plate (100) and the second expanded graphite fire-retardant layer (300) are also provided with an adhesive layer therebetween.

6. The high-performance fire rated shaving board of claim 5, wherein, The first expanded graphite fire-retardant layer (200) is coated with a melamine resin coating layer, and the second expanded graphite fire-retardant layer (300) is also coated with a melamine resin coating layer.

7. The high-performance fire rated shaving board of claim 1, wherein, The melamine resin coating layer has a thickness of 0.2-1 mm.

8. The high-performance fire rated shaving board of claim 1, wherein, ​ 9. The high-performance fire rated shaving board of claim 1, wherein, ​ 10. The high-performance fire rated shaving board of claim 9, wherein, ​

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