Damping composite sound insulation partition structure

Abstract

The utility model relates to a damping composite sound insulation partition structure which comprises a micro-perforated plate, a constraint damping structure and a splicing connecting piece, the micro-perforated plate is arranged on the upper side of the constraint damping structure, and a cavity is formed between the micro-perforated plate and the constraint damping structure. The constraint damping structure comprises an outer side elastic surface layer, a viscoelastic core layer and an inner side elastic surface layer, and the viscoelastic core layer is arranged between the outer side elastic surface layer and the inner side elastic surface layer in a bonding mode. The splicing connecting piece comprises a first connecting piece body and a second connecting piece body, and the first connecting piece body and the second connecting piece body are arranged at the two ends of the micro-perforated plate and the two ends of the constraint damping structure respectively. Through the design of the constraint damping structure, incident sound energy can be dissipated, and the forced bending modal shape can be changed, so that the sound insulation trough caused by modal resonance is remarkably improved, and the sound insulation performance of the composite structure at low and medium frequencies is further improved on the basis of ensuring lightness, thinness and low surface density.

Description

TECHNICAL FIELD

[0001] The utility model relates to building sound insulation board technical field especially is a kind of damping composite sound insulation partition structure. BACKGROUND

[0002] As the core component of building space division, lightweight partition bears the basic functions such as heat insulation, fire prevention and sound insulation, and the air sound insulation performance directly affects the indoor environment quality and the comfort experience of personnel. With the improvement of the requirements of modern buildings on energy saving and environmental protection and indoor environment comfort, the sound insulation performance of lightweight partition becomes an important index that cannot be ignored in building design.

[0003] However, the traditional lightweight partition mostly adopts materials such as paper-faced gypsum board, fiber reinforced cement board, ceramsite concrete, aerated concrete board and metal lightweight board. These materials are limited by the law of mass, that is, the sound insulation performance is usually proportional to the density and thickness of the material. Therefore, the sound insulation performance of traditional lightweight partition is usually poor, and if the partition density is increased to enhance the sound insulation performance, the lightweight of the partition cannot be realized. SUMMARY

[0004] Therefore, the utility model wants to overcome the insufficient in the prior art, provides a kind of damping composite sound insulation partition structure, by the design of constraint damping structure, dissipate incident sound energy, change forced bending mode shape, to significantly improve the sound insulation valley caused by modal resonance, on the basis of maintaining light and thin, low area density, further improve the sound insulation performance of composite structure in middle-low frequency, to meet the dual requirements of modern buildings on energy saving and environmental protection and indoor environment comfort.

[0005] To solve the above technical problems, the utility model provides a kind of damping composite sound insulation partition structure, including micro-perforated plate, constraint damping structure and splicing connecting piece, the micro-perforated plate is set on the upside of the constraint damping structure, and the cavity is formed between the constraint damping structure, the constraint damping structure includes outside elastic surface layer, viscoelastic core layer and inside elastic surface layer, the viscoelastic core layer is adhesively arranged between the outside elastic surface layer and the inside elastic surface layer;The splicing connecting piece includes first connecting piece and second connecting piece, and the first connecting piece, second connecting piece are respectively arranged at both ends of the micro-perforated plate and constraint damping structure.

[0006] In an embodiment of the utility model, the outside elastic surface layer and the viscoelastic core layer are adhesively connected by a first adhesive layer.

[0007] In an embodiment of the utility model, the viscoelastic core layer and the inside elastic surface layer are adhesively connected by a second adhesive layer.

[0008] In one embodiment of the utility model, the thickness of the first adhesive layer and the second adhesive layer is set to be within 1mm.

[0009] In one embodiment of the utility model, the bottom of the micro-perforated plate is connected with the outside elastic surface layer of the constraint damping structure through a support.

[0010] In one embodiment of the utility model, the cavity can be filled with sound-absorbing cotton to increase the sound-absorbing performance.

[0011] In one embodiment of the utility model, a clamping groove is arranged on the first connecting piece, a splicing block matched with the clamping groove is arranged on the second connecting piece, and the adjacent damping composite sound insulation partition structures are spliced together through the splicing connecting piece.

[0012] In one embodiment of the utility model, the thickness of the outside elastic surface layer and the inside elastic surface layer is set to be 10-15mm.

[0013] In one embodiment of the utility model, the thickness of the viscoelastic core layer is set to be 1-5mm.

[0014] In one embodiment of the utility model, the viscoelastic core layer is made of butyl rubber.

[0015] The above technical solution of the utility model has the following beneficial effects compared with the prior art:

[0016] The damping composite sound insulation partition structure disclosed by the utility model has the viscoelastic core layer pasted between the outside elastic surface layer and the inside elastic surface layer to form the constraint damping structure, which can dissipate incident sound energy and change the forced bending mode shape, thereby significantly improving the sound insulation valley caused by modal resonance, improving the sound insulation performance of the composite structure at medium and low frequencies on the basis of maintaining lightness and low surface density, and meeting the requirements of modern buildings on indoor environmental comfort. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to make the content of the utility model more easily understood, the utility model is further described in detail below according to the specific embodiments of the utility model and in combination with the drawings, in which

[0018] Figure 1 is a structural schematic view of the damping composite sound insulation partition structure in the preferred embodiment of the utility model;

[0019] Figure 2 is Figure 1 is a structural schematic view of the constraint damping structure of the damping composite sound insulation partition structure;

[0020] Figure 3 is Figure 1The normal incidence sound transmission loss simulation and experimental results of the shown damping composite sound insulation partition structure are carried out.

[0021] The description reference signs are explained: 1, micro-perforated plate; 2, constrained damping structure; 21, outer elastic surface layer; 22, viscoelastic core layer; 23, inner elastic surface layer; 24, first adhesive layer; 25, second adhesive layer; 4, first connecting piece; 41, clamping groove; 5, second connecting piece; 51, splicing block; 100, cavity. DETAILED DESCRIPTION

[0022] The utility model will be further explained in combination with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.

[0023] Reference Figure 1 And 2 As shown in the utility model discloses a kind of damping composite sound insulation partition structures, including micro-perforated plate 1, constrained damping structure 2 and splicing connecting piece, the micro-perforated plate 1 is set in the upper side of the constrained damping structure 2, and cavity 100 is formed between the constrained damping structure 2, the constrained damping structure 2 includes outer elastic surface layer 21, viscoelastic core layer 22 and inner elastic surface layer 23, the viscoelastic core layer 22 is adhesively arranged between the outer elastic surface layer 21 and the inner elastic surface layer 23;The splicing connecting piece includes first connecting piece 3 and second connecting piece 4, the first connecting piece 3, second connecting piece 4 are respectively set in the two ends of the micro-perforated plate 1 and constrained damping structure 2.

[0024] The utility model viscoelastic core layer 22 is pasted between outer elastic surface layer 21 and inner elastic surface layer 23, forms constrained damping structure 2, constrained damping structure 2 can dissipate incident sound energy, change forced bending mode shape, to significantly improve the sound insulation low of modal resonance, improve the sound insulation performance of composite structure in middle-low frequency;Meanwhile, the micro-pore design of micro-perforated plate 1 increases the structure flow resistance, and widens the sound absorption effective frequency range;The cavity 100 formed between micro-perforated plate 1 and constrained damping structure 2 further increases the sound absorption performance of structure, so as to improve the overall sound insulation effect.

[0025] Further, the outer elastic surface layer 21 is adhesively connected to the viscoelastic core layer 22 by the first adhesive layer 24. The viscoelastic core layer 22 is adhesively connected to the inner elastic surface layer 23 by the second adhesive layer 25. In the embodiment, the first adhesive layer 24 and the second adhesive layer 25 are both selected to be epoxy resin glue, and the structure is clamped and tightened for 24-48 hours to wait for solidification. Through the design of the first adhesive layer and the second adhesive layer 25, the stability and integrity of the structure are further enhanced. This adhesive method also helps to reduce the transmission of sound waves, improve the sound insulation effect, and also enhances the durability of the structure.

[0026] The inner elastic surface layer 23 is bonded to the outer side of the viscoelastic core layer 22, the viscoelastic core layer 22 is bonded to the inner surface of the outer elastic surface layer 21 and the inner surface of the inner elastic surface layer 23, the outer elastic surface layer 21 and the viscoelastic core layer 22 are bonded by a corresponding first bonding layer 24 according to the material, and the viscoelastic core layer 22 and the inner elastic surface layer 23 are bonded by a second bonding layer 25 according to the material. In order to make the structure more suitable for actual use scene of building, the outer elastic surface layer 21 and the inner elastic surface layer 23 are both selected as conventional building materials for interior design and construction, and the surface layer materials include but are not limited to paper faced gypsum board, oriented strand board, medium density board, aluminum plate. In this embodiment, the outer elastic surface layer 21 adopts oriented strand board, the viscoelastic core layer 22 selects butyl rubber commonly used in the field of building, and the inner elastic surface layer 23 adopts medium density board.

[0027] Preferably, the thickness of the first bonding layer 24 and the second bonding layer 25 is set to be within 1mm. The thickness design of the first bonding layer 24 and the second bonding layer 25 not only ensures the firmness of bonding, but also avoids excessive increase of the weight of the structure, maintains the light and thin characteristics of the structure, and meets the requirements of modern building for energy saving and environmental protection. Before the bonding work of the outer elastic surface layer 21, the viscoelastic core layer 22 and the inner elastic surface layer 23 starts, it is necessary to ensure that the bonding surfaces are clean and smooth, and remove impurities such as dust and oil stains; after the bonding work of the outer elastic surface layer 21, the viscoelastic core layer 22 and the inner elastic surface layer 23 ends, clamps or adhesive tape can be used to fix and maintain for a period of time to ensure that the adhesive is completely cured.

[0028] In this embodiment, the bottom of the micro-perforated plate 1 is connected to the outer elastic surface layer 21 of the constraint damping structure 2 through the support 5. The bottom of the micro-perforated plate 1 is connected to the outer elastic surface layer 21 of the constraint damping structure 2 through the support 5, which provides additional stability and ensures the reliability of the structure when subjected to external force, and also helps to reduce the sound bridge effect and further improve the sound insulation performance.

[0029] In this embodiment, the cavity 100 can be filled with sound-absorbing cotton to increase the sound absorption performance. Filling the cavity 100 with sound-absorbing cotton significantly increases the sound absorption performance of the structure, especially in the medium and low frequency range, which is crucial for improving the overall sound insulation effect.

[0030] Preferably, the first connecting piece 4 is provided with a clamping groove 41, the second connecting piece 5 is provided with a splicing block 51 matched with the clamping groove 41, and adjacent damping composite sound insulation partition structures are spliced together through splicing connecting pieces. This design allows adjacent damping composite sound insulation partition structures to be spliced together through splicing connecting pieces, improving the convenience and flexibility of installation.

[0031] Preferably, the thickness of the outer elastic surface layer 21 and the inner elastic surface layer 23 is set to 12mm. Such thickness setting ensures the sound insulation performance of the viscoelastic core layer 22 while maintaining the overall lightness of the structure, which helps to reduce the use of materials and meets the requirements of energy saving and environmental protection.

[0032] Preferably, the thickness of the viscoelastic core layer 22 is set to 1mm. Such material has good damping performance and can effectively convert the mechanical energy of sound waves into heat energy, thereby reducing the propagation of sound waves and improving the sound insulation effect.

[0033] In this embodiment, the outer elastic surface layer 21 is selected as 12mm oriented shaving board, the viscoelastic core layer 22 is selected as 1mm butyl rubber, and the inner elastic surface layer 23 is selected as 12mm medium density board, and then the normal incidence sound transmission loss simulation and experiment are carried out at different frequencies, and the results are shown in Figure 3 The experimental results are basically consistent with the numerical simulation analysis results, which further confirms the effectiveness of the utility model in improving the sound insulation performance.

[0034] Obviously, the above embodiments are only examples for clear illustration, and are not limited to the embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A damped composite soundproofing partition structure, characterized by: The application relates to a damping composite sound insulation partition structure, which comprises a micro-perforated plate, a constraint damping structure and a splicing connector, the micro-perforated plate is arranged on the upper side of the constraint damping structure and forms a cavity between the micro-perforated plate and the constraint damping structure; the constraint damping structure comprises an outer elastic surface layer, a viscoelastic core layer and an inner elastic surface layer, the viscoelastic core layer is adhesively arranged between the outer elastic surface layer and the inner elastic surface layer; the splicing connector comprises a first connector and a second connector, and the first connector and the second connector are respectively arranged at two ends of the micro-perforated plate and the constraint damping structure.

2. The damping composite soundproofing partition structure according to claim 1, characterized in that: The outer elastic surface layer and the viscoelastic core layer are adhesively connected through a first adhesive layer.

3. The damping composite soundproofing partition structure according to claim 2, characterized in that: The viscoelastic core layer and the inner elastic surface layer are adhesively connected through a second adhesive layer.

4. The damping composite soundproofing partition structure according to claim 3, characterized in that: The thickness of the first adhesive layer and the second adhesive layer is less than 1mm.

5. The damping composite soundproofing partition structure according to claim 1, characterized in that: The bottom of the micro-perforated plate is connected with the outer elastic surface layer of the constraint damping structure through a support.

6. The damping composite soundproofing partition structure according to claim 5, characterized in that: The cavity can be filled with sound-absorbing cotton to increase the sound absorption performance.

7. The damping composite soundproofing partition structure according to claim 1, characterized in that: The first connector is provided with a clamping groove, the second connector is provided with a splicing block matched with the clamping groove, and adjacent damping composite sound insulation partition structures are spliced together through the splicing connector.

8. The damping composite soundproofing partition structure according to claim 1, characterized in that: The thickness of the outer elastic surface layer and the inner elastic surface layer is 10-15mm.

9. The damping composite soundproofing partition structure according to claim 1, characterized in that: The thickness of the viscoelastic core layer is 1-5mm.

10. The damping composite soundproofing partition structure according to claim 1, characterized in that: The viscoelastic core layer is made of butyl rubber.

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