Honeycomb sandwich structure of low-density sound insulation gypsum board

Abstract

The utility model relates to the technical field of sound insulation plasterboards, in particular to a honeycomb sandwich structure of a low-density sound insulation plasterboard, which comprises an upper surface layer, a lower surface layer and a honeycomb core layer, the honeycomb core layer is clamped between the upper surface layer and the lower surface layer and is formed by arranging a plurality of continuous honeycomb units along the plane direction; a resonance dissipation assembly is arranged in each honeycomb unit; the resonance dissipation assembly comprises a closed shell, gradient filling media and an elastic connecting piece, a plurality of through holes are formed in the closed shell, the gradient filling media are arranged in the closed shell in a layered mode, and the elastic connecting piece is elastically connected with the closed shell and the honeycomb unit, so that the resonance dissipation assembly is elastically hung in the honeycomb unit. According to the utility model, the low and medium frequency sound insulation performance can be improved while the light weight is maintained.

Description

Technical Field

[0001] This utility model relates to the field of sound-insulating gypsum board technology, specifically to a honeycomb sandwich structure for low-density sound-insulating gypsum board. Background Technology

[0002] Honeycomb sandwich structures have attracted much attention in the field of building sound insulation due to their lightweight characteristics. For example, the patent with publication number CN205224316U discloses an aluminum honeycomb sound-absorbing panel, which sets an aluminum honeycomb core and multiple layers of sound-absorbing materials inside a gypsum board. Although it can improve sound insulation performance, because low-frequency sound waves have longer wavelengths and stronger penetrating power, this patent relies on porous materials for sound absorption and lacks an active resonance dissipation mechanism, resulting in limited effect on low frequencies and thus limiting the improvement in sound insulation. In addition, the structure of multiple layers of sound-absorbing materials stacked in this patent is prone to leading to a high surface density of the board, which is difficult to meet the modern building's demand for "lightweight and high sound insulation". Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a honeycomb sandwich structure for low-density sound-insulating gypsum board, which improves the mid-to-low frequency sound insulation performance while maintaining lightweight.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] The honeycomb sandwich structure of low-density sound-insulating gypsum board includes an upper surface layer, a lower surface layer, and a honeycomb core layer. The honeycomb core layer is sandwiched between the upper and lower surface layers and is composed of multiple consecutive honeycomb units arranged along a planar direction. Each honeycomb unit contains a resonant dissipation component. The resonant dissipation component includes a sealed shell, a gradient filling medium, and an elastic connector. The sealed shell has multiple perforations, the gradient filling medium is layered within the sealed shell, and the elastic connector elastically connects the sealed shell and the honeycomb unit, so that the resonant dissipation component is elastically suspended within the honeycomb unit.

[0006] As a further embodiment of this utility model: wherein the gradient filling medium includes an expanded perlite particle layer and a diatomaceous earth powder layer, and the expanded perlite particle layer and the diatomaceous earth powder layer are filled in layers along the thickness direction of the gypsum board inside the sealed outer shell.

[0007] As a further embodiment of this utility model, the wall thickness of the honeycomb unit is distributed in a gradient along the thickness direction of the gypsum board, forming a high-density area, a medium-density area and a low-density area.

[0008] As a further embodiment of this utility model: wherein, the inner sidewall of the honeycomb unit is provided with a slot along the circumference, the elastic connector is a silicone ring, the inner periphery of the silicone ring is sleeved on the sealed outer shell, and the outer periphery of the silicone ring is engaged in the slot.

[0009] As a further embodiment of this utility model, both the upper and lower surface layers are composed of reinforced fiber gypsum board.

[0010] As a further improvement of this utility model, the inner surfaces of both the upper and lower surfaces are connected to a sound-absorbing layer.

[0011] As a further improvement of this utility model, a transition layer is provided between the sound-absorbing layer and the honeycomb core layer.

[0012] By adopting the above technical solution, this utility model will have the following beneficial effects:

[0013] By directionally guiding mid-to-low frequency sound waves into the sealed shell through perforations, a resonance effect can be excited, converting sound energy in a specific frequency band into heat energy. The resonant dissipative components are elastically suspended within the honeycomb cells through elastic connectors, which can isolate the rigid vibration transmission between the resonant dissipative components and the honeycomb cells, block the sound energy return path, and at the same time allow the resonant dissipative components to adaptively displace, exciting multi-level resonance peaks and widening the low-frequency sound insulation bandwidth. The layered design of the gradient filling medium can dissipate mid-to-low frequency sound waves in stages, converting sound energy into heat energy through viscous resistance.

[0014] Compared with existing technologies that rely on multi-layer sound-absorbing materials, the lightweight module of the resonant dissipation component used in this invention can achieve wide-frequency sound insulation with low surface density, especially improving the sound insulation performance in the mid and low frequencies. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a cross-sectional view of the honeycomb sandwich structure of the low-density sound-insulating gypsum board described in this embodiment of the present invention;

[0017] Figure 2 for Figure 1 A cross-sectional view of the resonant dissipation component described in the embodiment;

[0018] Figure 3 for Figure 1 Top view of the honeycomb core layer described in the embodiment.

[0019] The correspondence between the labels and component names in the attached figures is as follows:

[0020] 11. Upper surface layer; 12. Lower surface layer; 2. Honeycomb core layer; 21. Honeycomb unit; 22. High-density area; 23. Medium-density area; 24. Low-density area; 3. Resonance dissipation component; 31. Sealed shell; 311. Perforation; 321. Expanded perlite particle layer; 322. Diatomaceous earth powder layer; 33. Elastic connector; 4. Sound-absorbing layer; 5. Transition layer. Detailed Implementation

[0021] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the following description is to be considered exemplary in nature and not restrictive.

[0022] Please refer to Figure 1-3 In one embodiment of the honeycomb sandwich structure of low-density sound-insulating gypsum board provided by this utility model, the honeycomb sandwich structure of the low-density sound-insulating gypsum board includes an upper surface layer 11, a lower surface layer 12, and a honeycomb core layer 2. The upper surface layer 11 and the lower surface layer 12 are both composed of reinforced fiber gypsum board with a thickness of 8-12 mm, and 5-10% rubber particles (particle size 0.2-0.8 mm) are incorporated to improve damping performance and optimize sound insulation. The honeycomb core layer 2 is sandwiched between the upper surface layer 11 and the lower surface layer 12, and is composed of multiple consecutive honeycomb units 21 arranged along a planar direction. Through the honeycomb core layer 2, sound waves can be continuously reflected, refracted, and scattered, allowing the energy of the sound waves to be gradually absorbed by the material.

[0023] Importantly, each cellular unit 21 is equipped with a resonant dissipation component 3. The resonant dissipation component 3 includes a sealed shell 31, a gradient filling medium, and an elastic connector 33. The sealed shell 31 is cylindrical, with multiple perforations 311 evenly distributed on its top wall to facilitate the entry of sound waves. The gradient filling medium is placed inside the sealed shell 31 to achieve multi-band synergistic sound absorption. The elastic connector 33 elastically connects the sealed shell 31 and the cellular unit 21, so that the resonant dissipation component 3 is elastically suspended inside the cellular unit 21. The elastic suspension design allows the resonant dissipation component 3 to vibrate within a wider displacement range, exciting multiple secondary resonance peaks and covering a wider frequency band. On the other hand, it can block the structural vibration transmission path and prevent the resonant energy generated by the sound waves from being transmitted back to the cellular structure.

[0024] Specifically, the gradient filling medium includes an expanded perlite granule layer 321 and a diatomaceous earth powder layer 322. These layers are layered and filled within the sealed outer shell 31 along the thickness direction of the gypsum board to dissipate sound waves in a graded manner. It should be noted that the particle size of the expanded perlite granule layer 321 is much larger than the pore size of the perforation 311. The larger expanded perlite particles are located on the upper layer, acting as a "filter layer" to prevent the lower diatomaceous earth powder from passing through the perforation 311. Simultaneously, a vacuum negative pressure injection technology is used to pre-compact the diatomaceous earth powder, preventing leakage of the gradient filling medium from the perforation 311.

[0025] Preferably, the honeycomb unit 21 adopts a regular hexagonal paper-based honeycomb with a pore size of 10-15mm and a height of 40-60mm. The wall thickness of the honeycomb unit 21 is gradient-distributed along the thickness direction of the gypsum board, with a wall thickness of 0.8-1.2mm, forming a high-density region 22 (honeycomb unit 21 wall thickness 1.2mm), a medium-density region 23 (honeycomb unit 21 wall thickness 1.0mm), and a low-density region 24 (honeycomb unit 21 wall thickness 0.8mm) in the honeycomb core layer 2. Through the gradient density design of the honeycomb core layer 2 (high-medium-low three-zone wall thickness optimization) and the lightweight module of the resonance dissipation component 3, the surface density of the board can be further reduced. Moreover, the density abrupt interface (high→medium→low) formed forces the sound wave to refract repeatedly, extending the propagation path and thus improving the sound energy attenuation rate.

[0026] Specifically, the inner sidewall of the cellular unit 21 has a slot along the circumference, and the elastic connector 33 is a silicone ring. The silicone ring is similar in shape to a nut, and its inner periphery is coaxially fixedly sleeved on the sealed outer shell 31. The cross-section of the outer periphery of the silicone ring is arc-shaped, and it is detachably snapped into the slot by utilizing the elasticity of silicone.

[0027] Furthermore, the inner surfaces of both the upper surface layer 11 and the lower surface layer 12 are tightly connected with a sound-absorbing layer 4, which is a microporous aluminum foil (pore size 0.5 mm, perforation rate 8%), used for high-frequency sound wave scattering to improve the absorption effect of high-frequency sound.

[0028] Furthermore, a transition layer 5 is provided between the sound-absorbing layer 4 and the honeycomb core layer 2. The transition layer 5 is a glass fiber mesh cloth, which is coated with polyurethane adhesive on both sides. During hot pressing, the adhesive penetrates into the honeycomb wall to a depth of 1 / 3 of the wall thickness.

[0029] The method of use or working principle of this utility model is as follows:

[0030] After sound enters from the outside of the upper surface layer 11, high-frequency sound waves are first scattered and absorbed by the sound-absorbing layer 4 of the upper surface layer 11; mid- and low-frequency sound waves enter the honeycomb core layer 2, and are continuously reflected, refracted, and scattered by the shell of the honeycomb core layer 2. The energy is initially absorbed by each honeycomb unit 21, and then further attenuated by repeated refraction at the density abrupt interface (high → medium → low) formed by the gradient wall thickness of the honeycomb unit 21. Then, it enters the resonant dissipation component 3 through the perforation 311 to induce resonance, converting sound energy into heat energy. Afterward, the residual mid- and low-frequency sound waves pass through the expanded perlite particle layer 321 and then penetrate into the diatomaceous earth powder layer 322, achieving graded dissipation. Viscous resistance converts sound energy into heat energy. The elastic suspension design of the resonant dissipation component 3 allows the resonant dissipation component 3 to vibrate within a larger displacement range, exciting multiple secondary resonance peaks, covering a wider frequency band of sound waves, and blocking the vibration energy from returning to the honeycomb structure. Finally, the residual high-frequency sound waves are scattered and absorbed by the sound-absorbing layer 4 of the lower surface layer 12, completing the entire gypsum board sound insulation process.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A honeycomb sandwich structure of low-density soundproof gypsum board, comprising an upper surface layer (11), a lower surface layer (12) and a honeycomb core layer (2); the honeycomb core layer (2) is sandwiched between the upper surface layer (11) and the lower surface layer (12) and is composed of a continuous plurality of honeycomb units (21) arranged in a planar direction; characterized in that, Each of the honeycomb units (21) is provided with a resonance dissipation assembly (3); the resonance dissipation assembly (3) comprises a closed shell (31), a gradient filling medium and an elastic connecting piece (33), the closed shell (31) is provided with a plurality of perforations (311), the gradient filling medium is layered in the closed shell (31), and the elastic connecting piece (33) elastically connects the closed shell (31) and the honeycomb unit (21), so that the resonance dissipation assembly (3) is elastically suspended in the honeycomb unit (21).

2. The honeycomb sandwich structure of low density acoustical gypsum board according to claim 1, characterized in that, The gradient filling medium comprises an expanded perlite particle layer (321) and a diatomite powder layer (322), and the expanded perlite particle layer (321) and the diatomite powder layer (322) are layered and filled in the closed shell (31) along the thickness direction of the gypsum board.

3. The honeycomb sandwich structure of low density acoustical gypsum board according to claim 1, wherein, The wall thickness of the honeycomb unit (21) is gradient distributed along the thickness direction of the gypsum board, forming a high-density area (22), a medium-density area (23) and a low-density area (24).

4. The honeycomb sandwich structure of low density acoustical gypsum board according to claim 1, wherein, The inner side wall of the honeycomb unit (21) is provided with a clamping groove in the circumferential direction, the elastic connecting piece (33) is a silica gel ring, the inner circumferential edge of the silica gel ring is sleeved on the closed shell (31), and the outer circumferential edge of the silica gel ring is clamped in the clamping groove.

5. The honeycomb sandwich structure of low density acoustical gypsum board according to claim 1, wherein, The upper surface layer (11) and the lower surface layer (12) are both composed of reinforced fiber gypsum board.

6. The honeycomb sandwich structure of low density acoustical gypsum board according to claim 1, wherein, The inner side surface of the upper surface layer (11) and the lower surface layer (12) is connected with a sound-absorbing layer (4).

7. The honeycomb sandwich structure of low density acoustical gypsum board according to claim 6, characterized in that, The sound-absorbing layer (4) and the honeycomb core layer (2) are provided with a transition layer (5).

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