Anti-explosion and anti-cracking multilayer board

Abstract

The utility model belongs to the technical field of explosion-proof cracking of multi-layer boards, and particularly relates to an explosion-proof cracking multi-layer board which comprises a surface layer, a top cracking-resistant grid is fixedly connected in the surface layer, an interlayer is arranged at the bottom of the surface layer, fibers which are arranged in a staggered mode are arranged at the bottom of the interlayer, and the top cracking-resistant grid is arranged at the bottom of the interlayer. A fiber reinforcing layer is arranged at the bottom of the staggered fibers, a core layer is arranged at the bottom of the fiber reinforcing layer, and a bottom layer is arranged at the bottom of the core layer; the surface layer is made of a glass fiber reinforced plastic material, has excellent impact resistance and can firstly bear and absorb part of external force impact energy, and the nano material energy absorption coating coated on the outer wall can absorb external impact energy through self deformation under extreme conditions such as explosion impact; the resistance to explosion energy is further enhanced, and cracks can be effectively prevented from expanding through the polyamide material of the internal top crack-resistant grid and the bottom crack-resistant grid.

Description

TECHNICAL FIELD

[0001] The utility model relates to multilayer board explosion -proof cracking technical field, concretely is a kind of multilayer board of explosion -proof cracking. BACKGROUND

[0002] The manufacturing method of multilayer board is generally to make inner layer pattern first, then make single-sided or double-sided substrate by printing etching method, and is included in specified interlayer, then is bonded by heating and pressing, and the drilling after that is same as through-hole plating method of double-sided board.

[0003] In Chinese patent CN202022664429.4, the utility model discloses a kind of novel multilayer board of preventing cracking, including upper substrate and lower substrate, the upper substrate and lower substrate are sequentially glued with fire-retardant board, thermal insulation board and moisture barrier from top to bottom between them, the upper substrate, lower substrate, fire-retardant board, thermal insulation board and moisture barrier week side outer wall are all provided with first fixed slot, the first fixed slot on the same side is aligned, the upper surface of the upper substrate and the lower surface of the lower substrate are both provided with second fixed slot, the second fixed slot is communicated with first fixed slot.The utility model is through the cooperation between first fixed slot, second fixed slot, fixed plate and prism rod, the position of fixed plate is restricted using prism rod, so that fixed plate is stably connected with upper substrate and lower substrate, so that each layer of board material is stable, reduce the phenomenon of cracking in the process of board processing and use.

[0004] The existing multilayer board is easy to cause the surface of the multilayer board to crack and the inside to bulge after being exposed to the sun, which reduces the aesthetic degree of the multilayer board and affects the normal use of the multilayer board.

[0005] Therefore, a multilayer board for preventing cracking is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0006] To make up for the deficiencies of the prior art, the problem of the existing multilayer board being easy to cause the surface of the multilayer board to crack and the inside to bulge after being exposed to the sun, which reduces the aesthetic degree of the multilayer board and affects the normal use of the multilayer board, is solved.

[0007] The utility model solves the technical scheme that the utility model discloses a kind of multilayer board of preventing cracking, including surface layer, the inside fixed connection of surface layer is top resistance grid, and the bottom of surface layer is provided with interlayer, the bottom of interlayer is provided with staggered arrangement fiber, and the bottom of staggered arrangement fiber is provided with fiber reinforced layer, the bottom of fiber reinforced layer is provided with core layer, and the bottom of core layer is provided with bottom layer, and the inside fixed connection of bottom layer is bottom resistance grid.

[0008] Preferably, the outer wall of the surface layer is coated with an energy-absorbing material coating, and the material of the energy-absorbing material coating is set as a nano material.

[0009] Preferably, the material of the surface layer is set as a glass fiber reinforced plastic material, and the surface layer is integrally arranged with the top crack resistance grid, and the material of the top crack resistance grid is set as a polyamide material.

[0010] Preferably, the staggered arrangement fiber is integrally arranged with the fiber reinforced layer, and the staggered arrangement fiber is arranged in a 90° cross direction.

[0011] Preferably, the core layer is set as a honeycomb structure, and the material of the core layer is set as an aluminum material.

[0012] Preferably, the material of the bottom layer is set as a rubber-based composite material, and the bottom layer is integrally arranged with the bottom crack resistance grid.

[0013] The utility model discloses the beneficial effect lies in:

[0014] 1. The utility model discloses the multilayer design of multilayer board forms layer by layer protection, and the surface layer adopts glass fiber reinforced plastic material, and itself has excellent high impact resistance, can first bear and absorb part of external impact energy, and the nanometer material energy absorption coating coated on the outer wall can absorb external impact energy through self deformation when encountering explosion impact and the like extreme condition, further enhances the resistance to explosion energy, and the top crack resistance grid polyamide material and the bottom crack resistance grid in the inside can effectively prevent crack propagation, whether the crack generated from the surface layer or the crack appearing from the bottom layer can be intercepted by these crack resistance grids, and the crack is prevented from spreading in the whole board, thereby guaranteeing the structural integrity of multilayer board under explosion impact, and the staggered arrangement fiber is integrally arranged with the fiber reinforced layer, and the staggered arrangement fiber is arranged in a 90° cross direction, and this design can evenly disperse stress in the vertical direction, when external impact force acts on the multilayer board, stress will not concentrate in a certain direction, effectively inhibits the generation and expansion of crack, and greatly improves the crack resistance of multilayer board. ACCURACY

[0015] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, and obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without paying the creativity labor intensity.

[0016] Figure 1 It is the whole front view of the utility model three-dimensional structure schematic diagram;

[0017] Figure 2 It is the whole right view of the utility model three-dimensional structure schematic diagram.

[0018] Figure 3 It is the opening structure schematic diagram of the whole front view of the utility model;

[0019] Figure 4 It is the section structure schematic diagram of the whole front view of the utility model.

[0020] In the drawing: 1, surface layer; 2, top anti-cracking grid; 3, interlayer; 4, staggered arrangement fiber; 5, fiber reinforced layer; 6, core layer; 7, bottom anti-cracking grid; 8, bottom layer. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] Embodiment one

[0023] As Figure 1 shown, an anti-burst multilayer board includes surface layer 1, top anti-cracking grid 2, interlayer 3, staggered arrangement fiber 4, fiber reinforced layer 5, core layer 6, bottom anti-cracking grid 7, and bottom layer 8.

[0024] Please refer to Figures 1 to 4The illustrated anti-burst multi-layer board includes a surface layer 1, a top burst-resistant grid 2 fixedly connected inside the surface layer 1, a sandwich layer 3 provided at the bottom of the surface layer 1, a staggered arrangement of fibers 4 provided at the bottom of the sandwich layer 3, a fiber-reinforced layer 5 provided at the bottom of the staggered arrangement of fibers 4, a core layer 6 provided at the bottom of the fiber-reinforced layer 5, and a bottom layer 8 provided at the bottom of the core layer 6, with a bottom burst-resistant grid 7 fixedly connected inside the bottom layer 8. The outer wall of the surface layer 1 is coated with an energy-absorbing material coating, and the material of the energy-absorbing material coating is set as a nano material. The material of the surface layer 1 is set as a glass fiber reinforced plastic material, and the surface layer 1 and the top burst-resistant grid 2 are integrally provided, with the material of the top burst-resistant grid 2 set as a polyamide material. The staggered arrangement of fibers 4 and the fiber-reinforced layer 5 are integrally provided, and the staggered arrangement of fibers 4 is laid in a 90° cross-fiber direction. The core layer 6 is set as a honeycomb structure, and the material of the core layer 6 is set as an aluminum material. The core layer 6 adopts a honeycomb structure of aluminum material, and the unique geometry of the honeycomb structure makes it have excellent anti-deformation ability. When subjected to external force, this structure can effectively disperse stress and avoid local stress from being too large to cause structural damage. The material of the bottom layer 8 is set as a rubber-based composite material, and the bottom layer 8 and the bottom burst-resistant grid 7 are integrally provided. The bottom layer 8 adopts a rubber-based composite material, which has high toughness. When the impact force is transmitted to this layer, the rubber-based composite material can disperse and buffer the impact force through its elastic deformation. It not only reduces the impact damage to the bottom of the multi-layer board, but also prevents cracks from spreading upwards due to the impact on the bottom layer 8, thereby protecting the structural integrity of the entire multi-layer board.

[0025] Working principle: when the multi-layer board is subjected to external impact, the glass fiber reinforced plastic material of the surface layer 1 first bears the impact, this material has high impact resistance and can absorb part of the energy, at the same time, the nano material energy absorption coating coated on the outer wall of the surface layer 1 plays a key role, the nano material can absorb energy by deforming itself due to its special physical and chemical properties when it is impacted, the top crack resistance grid 2 of the polyamide material in the surface layer 1 is integrally arranged with the surface layer 1, the top crack resistance grid 2 of the polyamide material has high strength and toughness, when the impact causes cracks in the surface layer 1, the cracks will meet the top crack resistance grid 2 during the process of extending to the inside, the grid structure can prevent the cracks from further extending because its tough material can withstand the stress of crack propagation, avoiding the cracks penetrating the surface layer 1 into the lower structure, thus ensuring that the multi-layer board will not be affected by the local damage of the surface layer 1 when subjected to small impact, at the same time, the integral arrangement ensures the stability of the connection between the surface layer 1 and the top crack resistance grid 2, and will not cause delamination and other problems during the impact process, the staggered arrangement of fibers 4 and the fiber reinforced layer 5 are integrally arranged and the fiber direction is cross laid 90°, when the impact force is transmitted to this layer, the special fiber arrangement can make the stress evenly dispersed in the vertical direction, because the fiber has high strength, it can bear part of the tension when it is stressed, preventing the material from cracking under stress, the core layer 6 is a honeycomb structure of aluminum material, the geometry of the honeycomb structure makes it have excellent stress dispersion ability when subjected to external force, when the impact force is transmitted from the upper structure to the core layer 6, the cells of the honeycomb structure can disperse the stress to multiple directions, the aluminum material itself has certain strength and toughness, which can withstand the dispersed stress, this design can avoid local stress too large, ensure that the core layer 6 will not be severely deformed or damaged when subjected to large impact force, thus maintaining the structural stability of the entire multi-layer board, the rubber-based composite material of the bottom layer 8 plays a key role in buffering when the multi-layer board is impacted, when the impact force reaches the bottom layer 8, the rubber-based composite material absorbs and disperses energy by its elastic deformation, its high toughness enables it to withstand impact to a large extent without breaking, at the same time, the bottom crack resistance grid 7 in the bottom layer 8 is integrally arranged with the bottom layer 8, when the bottom layer 8 cracks due to impact, the bottom crack resistance grid 7 can prevent the cracks from extending upwards, preventing the cracks from spreading to the core layer 6 and the upper structure, ensuring the overall integrity of the multi-layer board, the buffering and crack prevention mechanism of the bottom layer 8 cooperates with other layers to improve the anti-burst and crack performance of the multi-layer board.

[0026] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A multi-ply panel resistant to explosive cracking, characterized by: The application relates to a kind of anti-cracking roof, including surface layer (1), the inside fixed connection of surface layer (1) is provided with top anti-cracking grid (2), and the bottom of surface layer (1) is provided with interlayer (3), the bottom of interlayer (3) is provided with staggered arrangement fiber (4), and the bottom of staggered arrangement fiber (4) is provided with fiber reinforced layer (5), the bottom of fiber reinforced layer (5) is provided with core layer (6), and the bottom of core layer (6) is provided with bottom layer (8), and the inside fixed connection of bottom layer (8) is provided with bottom anti-cracking grid (7).

2. A multi-ply board that resists explosive cracking according to claim 1, wherein: The outer wall of the surface layer (1) is coated with an energy-absorbing material coating, and the material of the energy-absorbing material coating is set to be a nanomaterial.

3. The explosion resistant, crack resistant, multi-layered panel of claim 1, wherein: The material of the surface layer (1) is set to be a glass fiber reinforced plastic material, the surface layer (1) and the top anti-cracking grid (2) are integrally arranged, and the material of the top anti-cracking grid (2) is set to be a polyamide material.

4. The explosion resistant, crack resistant, multi-layered panel of claim 1, wherein: The staggered arrangement fiber (4) and the fiber reinforced layer (5) are integrally arranged, and the staggered arrangement fiber (4) is laid in a fiber direction crossing mode of 90 degrees.

5. The explosion resistant, crack resistant, multi-layered panel of claim 1, wherein: The core layer (6) is set to be a honeycomb structure, and the material of the core layer (6) is set to be an aluminum material.

6. The explosion resistant, crack resistant, multi-layered panel of claim 1, wherein: The material of the bottom layer (8) is set to be a rubber-based composite material, and the bottom layer (8) and the bottom anti-cracking grid (7) are integrally arranged.

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