A large single-cone hollow wave absorbing structure resistant to high power

Abstract

The utility model relates to the technical field of wave-absorbing materials, and specifically discloses a high-power resistant large-scale single-conical hollow wave-absorbing structure, including an outer shell, a bottom plate and wave-absorbing angle cones, the number of wave-absorbing angle cones is four, the four wave-absorbing angle cones are respectively fixedly connected to the bottom plate and are respectively located at the upper end of the bottom plate, the outer shell is fixedly connected to the four wave-absorbing angle cones and are located at the upper ends of the four wave-absorbing angle cones, and the outer shell covers the four wave-absorbing angle cones. It has the characteristics of rapid production, excellent wave-absorbing performance and flame-retardant performance, and overcomes the problems of low production efficiency and high labor cost in the production of flame-retardant wave-absorbing materials by traditional non-woven fabric surface coating, conductive agent, pressing and cutting, and bonding molding processes.

Description

Technical Field

[0001] The utility model relates to the technical field of wave absorbing materials, in particular to a high-power resistant large-scale single-cone hollow wave absorbing structure. Background Art

[0002] At present, soft polyurethane foam absorbing materials have some shortcomings that are difficult to overcome: first, although polyurethane foam absorbing materials have been flame retardant, their composition makes it difficult for the oxygen index to exceed 40%, and the flame retardancy performance only reaches B2 level, which is prone to fire accidents in some extreme cases; second, the power resistance performance of polyurethane absorbing materials does not exceed 1500W / m 2 Even if the pore size of the polyurethane substrate is increased to 5mm, its power resistance performance is only 3200W / m 2 ; When power density ≥4000W / m 2 When electromagnetic waves are radiated on the absorbing material of polyurethane foam plastic, fire accidents will still occur; thirdly, when the polyurethane foam pyramid is at a high height, due to its own weight, after a period of use, the tip of the material pyramid will bend, making the darkroom aesthetics worse and the overall darkroom performance decreased.

[0003] In the prior art, non-woven fabric is used as the substrate, flame retardant and absorbent are coated on the surface of the substrate, and then pressed, folded and bonded to form a pyramidal non-woven fabric flame retardant absorbing material, which solves the problems of polyurethane absorbing materials such as elbows, powder loss, low flame retardancy and high power resistance.

[0004] However, in the prior art, the painting, pressing, folding and bonding of non-woven fabric-based absorbing materials cannot be automated. There are many steps in the manual production of non-woven fabric-based absorbing materials. The absorbing materials are all handmade, and their quality and appearance consistency are often not guaranteed, resulting in gaps between the corner cone units in the material that are difficult to avoid, and low production efficiency. Utility Model Content

[0005] The utility model aims to provide a large-scale single-cone hollow absorbing structure resistant to high power, aiming to solve the technical problems that the brushing, pressing, folding and bonding of non-woven fabric-based absorbing materials in the prior art cannot be automated, the manual production of non-woven fabric-based absorbing materials has many steps, and the absorbing materials are all handmade, and the consistency of their quality and appearance is often not guaranteed, resulting in gaps between the pyramidal units in the material that are difficult to avoid and low production efficiency.

[0006] To achieve the above-mentioned purpose, the utility model adopts a high-power resistant large-scale single-conical hollow wave-absorbing structure, including an outer shell, a bottom plate and a wave-absorbing angle cone, the number of the wave-absorbing angle cones is four, the four wave-absorbing angle cones are respectively fixedly connected to the bottom plate and are respectively located at the upper end of the bottom plate, the outer shell is fixedly connected to the four wave-absorbing angle cones and is located at the upper ends of the four wave-absorbing angle cones, and the outer shell covers the four wave-absorbing angle cones.

[0007] The outer shell is made of an inorganic fireproof fiber cloth with silica sol coated on its surface, and the inner surface and the outer surface of the outer shell are evenly sprayed with a conductive layer.

[0008] The silica sol has a silica gel content of 35% to 50% and a viscosity of 5000 to 10000 mpa.s.

[0009] Wherein, the resistance value of the conductive layer is 100-300Ω / square.

[0010] The height of each of the wave-absorbing corner pyramids is 914 mm, and the side length of the four wave-absorbing corner pyramids is 600 mm.

[0011] Wherein, the outer shell and the four wave-absorbing corner pyramids are bonded with fire-resistant silicone adhesive.

[0012] The outer shell has a height of 1830 mm, a side length of 600 mm, and a thickness of 1.2 mm.

[0013] The utility model provides a high-power resistant large-scale single-cone hollow absorbing structure with beneficial effects as follows: it has the characteristics of rapid production, excellent absorbing performance and flame retardant performance, and overcomes the problems of low production efficiency and high labor cost in the production of flame-retardant absorbing materials by the traditional non-woven fabric surface coating, conductive agent, pressing and cutting, and bonding molding processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 The utility model is a structural schematic diagram of a high-power resistant large-scale single-cone hollow wave absorbing structure.

[0016] Figure 2 The utility model is a partial structural schematic diagram of a high-power resistant large-scale single-cone hollow wave absorbing structure.

[0017] Figure 3The utility model is a structural perspective view of a high-power resistant large-scale single-cone hollow wave-absorbing structure.

[0018] 1-outer shell, 2-bottom plate, 3-wave absorbing pyramid. DETAILED DESCRIPTION

[0019] See also Figures 1 to 3 The utility model provides a high-power resistant large-scale single-conical hollow wave-absorbing structure, comprising an outer shell 1, a bottom plate 2 and wave-absorbing angle cones 3, wherein the number of the wave-absorbing angle cones 3 is four, and the four wave-absorbing angle cones 3 are respectively fixedly connected to the bottom plate 2 and are respectively located at the upper ends of the bottom plate 2, the outer shell 1 is fixedly connected to the four wave-absorbing angle cones 3 and are located at the upper ends of the four wave-absorbing angle cones 3, and the outer shell 1 covers the four wave-absorbing angle cones 3.

[0020] Furthermore, the outer shell 1 is made of an inorganic fireproof fiber cloth with silica sol coated on its surface, and the inner surface and the outer surface of the outer shell 1 are uniformly sprayed with a conductive layer.

[0021] Furthermore, the silica content of the silica sol is 35% to 50%, and the viscosity is 5000 to 10000 mPa.s.

[0022] Furthermore, the resistance value of the conductive layer is 100-300Ω / square.

[0023] Furthermore, the height of each of the wave-absorbing corner pyramids 3 is 914 mm, and the side length of the four wave-absorbing corner pyramids 3 is 600 mm.

[0024] Furthermore, the outer shell 1 and the four absorbing corner pyramids 3 are bonded with fire-resistant silicone adhesive.

[0025] Furthermore, the outer shell 1 has a height of 1830 mm, a side length of 600 mm, and a thickness of 1.2 mm.

[0026] In this embodiment, a pyramid structure is formed by using a plywood with a height of 1830 mm, a side length of 600 mm and a thickness of 18 mm, and an inorganic fireproof fiber cloth is wrapped from the bottom edge to the top and fixed with nails. At the same time, the overlap width between the inorganic fireproof fiber cloths is 20 mm, and silica sol is applied to the surface of the inorganic fireproof fiber cloth, and the application is repeated until the inorganic fireproof fiber cloth is soaked, and then naturally dried to form a shell with a thickness of 0.4 mm. The process is repeated twice to make the outer shell 1 with a thickness of 1.2 mm, the outer shell 1 is detached, and a conductive layer is evenly sprayed on the outer surface and the inner surface of the outer shell 1 and dried, the four absorbing angle cones 3 are bonded and fixed to the upper end of the base plate 2, and the four absorbing angle cones 3 are bonded and fixed to the outer shell 1 using fireproof silicone glue.

[0027] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.

Claims

1. A large single-cone hollow wave absorbing structure resistant to high power, characterized in that: It includes an outer shell, a bottom plate and an absorbing angle pyramid. There are four absorbing angle pyramids, which are fixedly connected to the bottom plate and located at the upper end of the bottom plate respectively. The outer shell is fixedly connected to the four absorbing angle pyramids and located at the upper ends of the four absorbing angle pyramids, and the outer shell covers the four absorbing angle pyramids.

2. A high-power resistant large-scale single-cone hollow wave absorbing structure as claimed in claim 1, characterized in that: The outer shell is made of an inorganic fireproof fiber cloth with silica sol coated on its surface, and the inner surface and the outer surface of the outer shell are uniformly sprayed with a conductive layer.

3. A high-power resistant large-scale single-cone hollow wave absorbing structure as claimed in claim 2, characterized in that: The silica sol has a silica gel content of 35% to 50% and a viscosity of 5000 to 10000 mpa.s.

4. A high-power resistant large-scale single-cone hollow wave absorbing structure as claimed in claim 2, characterized in that: The resistance value of the conductive layer is 100 to 300Ω / square.

5. A high-power resistant large-scale single-cone hollow wave absorbing structure as claimed in claim 1, characterized in that: The height of each of the wave-absorbing corner pyramids is 914 mm, and the side length of the four wave-absorbing corner pyramids is 600 mm.

6. A high-power resistant large-scale single-cone hollow wave absorbing structure as claimed in claim 1, characterized in that: The outer shell and the four wave-absorbing corner pyramids are bonded with fire-resistant silicone adhesive.

7. A high-power resistant large-scale single-cone hollow wave absorbing structure as claimed in claim 1, characterized in that: The outer shell has a height of 1830 mm, a side length of 600 mm and a thickness of 1.2 mm.

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