Fabricated sound insulation and heat preservation wallboard and using method

By alternately installing low-frequency and medium- and high-frequency sound wave barriers in prefabricated sound insulation wall panels and combining them with magnesium alloy reinforcement structures, the problems of poor stability and sound insulation caused by the lack of support of fire-proof sound-absorbing cotton panels were solved, and the full-band sound insulation and load-bearing capacity were improved.

CN120625791APending Publication Date: 2025-09-12CHINA MCC17 GRP CO LTD
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Patent Information

Application Number
CN202510892502.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-30
Publication Date
2025-09-12

AI Technical Summary

Technical Problem

Existing prefabricated sound insulation wall panels lack a supporting structure for the fireproof and sound-absorbing cotton panels, resulting in low stability and poor sound insulation, especially at the support beam position.

Method used

Low-frequency sound wave barriers and medium- and high-frequency sound wave barriers are alternately installed between the first reinforcement strip and the second reinforcement strip. The first reinforcement panel and the second reinforcement panel are covered, combined with the reinforcement ring and sealing sheet made of magnesium alloy, to achieve full-band sound insulation, while improving the load-bearing capacity and protection effect.

Benefits of technology

It achieves full-band sound insulation, improves the stability and bearing capacity of the wall panels, extends their service life, and improves installation convenience and sealing.

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Abstract

The invention relates to the technical field of heat preservation wallboards, and discloses an assembly type sound insulation heat preservation wallboard and a using method.The assembly type sound insulation heat preservation wallboard comprises a first reinforcing panel, a second reinforcing panel, a first reinforcing strip and a second reinforcing strip, the first reinforcing panel and the second reinforcing panel are oppositely arranged, and a reinforcing ring is arranged between the second reinforcing panel and the first reinforcing panel in a surrounding mode; the first reinforcing strip and the second reinforcing strip are arranged on the two sides between the first reinforcing panel and the second reinforcing panel respectively, and a low-frequency sound wave blocking piece and a medium-high frequency sound wave blocking piece are sequentially arranged between the first reinforcing strip and the second reinforcing strip. According to the sound insulation device, low-frequency noise and high-frequency noise are sequentially limited and adsorbed through the low-frequency sound wave blocking piece and the medium-high-frequency sound wave blocking piece, full-band sound insulation is achieved, and in the sound insulation process, the two sides of the low-frequency sound wave blocking piece and the two sides of the medium-high-frequency sound wave blocking piece are supported through the first reinforcing strip and the second reinforcing strip correspondingly; and through covering of the second reinforcing panel and the first reinforcing panel, the bearing capacity is improved.
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Description

Technical Field

[0001] The present invention relates to the technical field of thermal insulation wall panels, and in particular to an assembled sound insulation and thermal insulation wall panel and a use method thereof. Background Art

[0002] Prefabricated sound insulation and thermal insulation wall panels are prefabricated wall panels that combine sound insulation and thermal insulation functions. They adopt a modular design for quick installation. Their core materials usually include sound insulation and thermal insulation layers, which can effectively reduce noise transmission and improve the building's thermal insulation performance. In the construction of cultural and tourism complexes, prefabricated sound insulation and thermal insulation wall panels can optimize the indoor acoustic environment, provide a comfortable experience for tourists, and reduce energy consumption, conforming to the concept of green building. Their prefabrication characteristics can shorten the construction period and reduce the difficulty of on-site operations, making them suitable for large-scale and diverse cultural and tourism projects.

[0003] The Chinese patent with publication number CN211666012U discloses a new type of thermal insulation and sound insulation wooden wall, including a vertical beam, a slot 1 and a slot 2 are formed on the vertical beam, the slot 1 is above the slot 2, and the two ends of the horizontal beam are respectively provided with a connecting protrusion 1, which can be inserted into the slot 1, and the two ends of the horizontal beam are respectively provided with a connecting protrusion 2, which can be inserted into the slot 2. In this invention, the arrangement of the slot 1 and the connecting protrusion 1, as well as the slot 2 and the connecting protrusion 2, does not require the use of glue or screws to fix, and the wooden wall can be assembled and disassembled easily. The arrangement of the straw board can realize waste recycling, safety and environmental protection, thermal insulation and sound insulation, and enhance the mechanical properties and service life of the wooden wall; it can be applied to construction work of light wooden structures.

[0004] During use of the new thermal insulation and sound insulation wooden wall of the above-mentioned patent, the fireproof sound-absorbing cotton panels and the supporting beams are alternately distributed. In actual use, there is no supporting structure inside the fireproof sound-absorbing cotton panels. The lack of a supporting structure causes the stability of the entire thermal insulation and sound insulation wooden wall to be low, and the fireproof sound-absorbing cotton panels and the supporting beams are alternately distributed, resulting in poor sound insulation effect at the support beam position. Summary of the Invention

[0005] The object of the present invention is to provide an assembled sound-insulating and heat-insulating wall panel and a method for use thereof, wherein low-frequency sound wave barriers and medium- and high-frequency sound wave barriers are alternately installed between a first reinforcement bar and a second reinforcement bar for support, thereby achieving full-band sound insulation. At the same time, through the support of the first reinforcement bar and the second reinforcement bar, and the covering of the second reinforcement panel and the first reinforcement panel, the load-bearing capacity and the protective effect are improved, thereby solving the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned objectives, the present invention adopts the following technical solutions: an assembled sound insulation and heat preservation wall panel, comprising a first reinforcement panel and a second reinforcement panel arranged opposite to each other, a first reinforcement strip and a second reinforcement strip, a reinforcement ring is arranged around the second reinforcement panel and the first reinforcement panel, the first reinforcement strip and the second reinforcement strip are respectively arranged between the first reinforcement panel and the second reinforcement panel, a low-frequency sound wave barrier and a medium- and high-frequency sound wave barrier are arranged in sequence between the first reinforcement strip and the second reinforcement strip, a tongue is fixedly connected to one side of the reinforcement ring, and a corresponding groove is opened on the other side, and a sealing sheet is adhered to one side of the reinforcement ring.

[0007] Preferably, the first reinforcement panel, the second reinforcement panel and the reinforcement ring are made of magnesium alloy.

[0008] Preferably, the low-frequency sound wave barrier is made of butyl rubber material, and the medium- and high-frequency sound wave barrier is made of foamed polyurethane material.

[0009] Preferably, an anti-permeability sheet is provided between the medium and high frequency sound wave barrier sheet and the second reinforcement strip, and a wrapping film is provided around the outside of the anti-permeability sheet.

[0010] Preferably, the wrapping film is made of aluminum foil, and the anti-permeation sheet is made of silicon dioxide nanoparticles.

[0011] Preferably, a fireproof sheet is laid between the anti-permeability sheet and the second reinforcement strip.

[0012] Preferably, a second groove is provided inside the second reinforcement strip, a first groove is provided inside the first reinforcement strip, the first groove is filled with first thermal insulation cotton, and the second groove is filled with second thermal insulation cotton.

[0013] Preferably, a regular hexagonal honeycomb array is used in the first groove and the second groove.

[0014] A method for using an assembled sound insulation wall panel comprises the following steps:

[0015] Step S1: Use a sound level meter to measure the noise spectrum of the installation area and select the wall panel configuration based on the noise characteristics: when low-frequency noise is greater than 45dB, use a thickened low-frequency sound wave barrier. When medium- and high-frequency noise is prominent, use a high-density foamed polyurethane medium- and high-frequency sound wave barrier. Then use an infrared thermal imager to scan the first and second reinforcement strips to verify the uniformity of the insulation filling.

[0016] Step S2: Adjust the distance between adjacent wall panels to 20 ± 0.5 cm, move the wall panel horizontally so that the tongue 15 of the reinforcement ring 3 fits into the slot 16 of another wall panel, and apply pressure until you hear the feedback sound of the tongue 15 and the slot 16 locking. The wall panel assembly is complete.

[0017] Step S3: During sound insulation, the low-frequency sound wave barrier 7 absorbs low-frequency noise, and the medium- and high-frequency sound wave barrier 8 absorbs medium- and high-frequency noise;

[0018] Step S4: Performance test: Sound insulation test, using the sound source method to ensure that the low frequency (20-200Hz) sound insulation is ≥30dB, and the medium and high frequency (200-2000Hz) sound insulation is ≥40dB; thermal insulation test, using the heat flow meter method to measure the heat transfer coefficient, ensuring that K ≤0.30W / (m 2 ·K).

[0019] The present invention has the following beneficial effects:

[0020] 1. In the present invention, low-frequency noise and high-frequency noise are restricted and absorbed in turn by the low-frequency sound wave barrier sheet and the medium- and high-frequency sound wave barrier sheet, thereby achieving full-band sound insulation. In addition, during the sound insulation process, the low-frequency sound wave barrier sheet and the medium- and high-frequency sound wave barrier sheet are supported by the first reinforcement strip and the second reinforcement strip on both sides, and covered by the second reinforcement panel and the first reinforcement panel, thereby improving the bearing capacity and the protection effect, thereby avoiding damage to the wall panel caused by the low-frequency sound wave barrier sheet and the medium- and high-frequency sound wave barrier sheet being exposed to the outside.

[0021] 2. In the present invention, the combination of the first reinforcement panel, the second reinforcement panel and the reinforcement ring made of magnesium alloy can protect the internal structure, prevent damage to the sound insulation wall panels caused by external collisions and impacts, and improve the service life and use effect of the assembled sound insulation wall panels; the tongues and grooves provided on both sides of the reinforcement ring are simple to operate and easy to install, and the sealing sheet provided improves the installation convenience of the assembled sound insulation wall panels and the sealing after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the overall external structure of an assembled sound insulation and heat preservation wall panel and its use method;

[0023] Figure 2 An exploded diagram of the internal structure of an assembled sound insulation and heat preservation wall panel and its use method;

[0024] Figure 3 A cross-sectional view of the internal structure of an assembled sound insulation and heat preservation wall panel and its use method;

[0025] Figure 4 A prefabricated sound insulation wall panel and a method of use Figure 3 A partial enlarged view of area A in the middle;

[0026] Figure 5 A prefabricated sound insulation wall panel and a method of use Figure 3 A partial enlarged view of area B in the middle;

[0027] Figure 6 A schematic diagram of a tongue of an assembled sound insulation wall panel and a method of use.

[0028] Legend:

[0029] 1. First reinforcement panel; 2. Second reinforcement panel; 3. Reinforcement ring; 4. First reinforcement strip; 5. First groove; 6. First thermal insulation cotton; 7. Low-frequency sound wave barrier; 8. Medium and high-frequency sound wave barrier; 9. Wrapping film; 10. Anti-permeability sheet; 11. Fireproof sheet; 12. Second thermal insulation cotton; 13. Second reinforcement strip; 14. Second groove; 15. Tab; 16. Slot; 17. Sealing sheet. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Example 1, reference Figure 1 and Figure 6 The present embodiment provides an assembled sound insulation and thermal insulation wall panel, comprising a first reinforcement panel 1 and a second reinforcement panel 2, a first reinforcement strip 4, and a second reinforcement strip 13, which are arranged opposite to each other. A reinforcement ring 3 is provided between the second reinforcement panel 2 and the first reinforcement panel 1. The combination of the first reinforcement panel 1, the second reinforcement panel 2, and the reinforcement ring 3 can wrap and restrict the internal structure of the sound insulation and thermal insulation wall panel, and the combination of the first reinforcement panel 1, the second reinforcement panel 2, and the reinforcement ring 3 can protect the internal structure and prevent damage to the sound insulation and thermal insulation wall panel caused by external collisions and impacts.

[0032] A tongue 15 is fixedly connected to one side of the reinforcement ring 3, and a corresponding groove 16 is opened on the other side. A sealing sheet 17 is adhered to one side of the reinforcement ring 3. The sealing sheet 17 is made of fiber material (such as glass fiber, aramid fiber, etc.) embedded in silicone rubber. The addition of fiber can improve the shape stability of the sealing strip 17, so that it can still maintain a good sealing effect under long-term use and stress conditions, ensuring the durability of the sound insulation and heat preservation performance between the wall panels; when assembling the wall panels, adjust the distance between adjacent wall panels to 20±0.5cm, move the wall panels horizontally so that the tongue 15 of the reinforcement ring 3 is embedded in the groove 16 of another wall panel, and apply pressure until you hear the feedback sound of the tongue 15 and the groove 16 being locked (such as a "click" sound, the tongue 15 produces elastic deformation during the locking process, and the tongue 15 rebounds and recovers inside the groove 16 after locking). The wall panel assembly is completed, the operation is simple, the installation is convenient, and the assembly convenience of the wall panel is improved; the sealing sheet 17 enhances the sealing between the two wall panels, further enhancing the sound insulation effect;

[0033] The materials of the first reinforcement panel 1, the second reinforcement panel 2 and the reinforcement ring 3 are magnesium alloy. The first reinforcement panel 1, the second reinforcement panel 2 and the reinforcement ring 3 made of magnesium alloy can improve the service life and use effect of the assembled sound insulation wall panel.

[0034] Example 2, reference Figure 2 、 Figure 3 and Figure 5 The first reinforcement strip 4 and the second reinforcement strip 13 are respectively arranged on both sides between the first reinforcement panel 1 and the second reinforcement panel 2. The second reinforcement strip 13 has a second groove 14 extending therethrough, and the first reinforcement strip 4 has a first groove 5 extending therethrough. The first reinforcement strip 4 having the first groove 5 and the second reinforcement strip 13 having the second groove 14 can further improve the bearing capacity of the assembled sound insulation wall panel.

[0035] Among them, the interior of the first groove 5 is filled with the first thermal insulation cotton 6, and the interior of the second groove 14 is filled with the second thermal insulation cotton 12. The second thermal insulation cotton 12 and the first thermal insulation cotton 6 on both sides of the assembled sound insulation wall panel can block and limit heat, preventing the external low temperature from entering and preventing internal heat loss.

[0036] Preferably, a regular hexagonal honeycomb array is used in the first groove 5 and the second groove 14, and a magnesium alloy grid skeleton is used, and nano aerogel insulation cotton is filled inside. The mechanical properties of the honeycomb structure are improved by more than 40% compared with the traditional groove structure, which can effectively disperse the external impact force and greatly improve the bearing capacity of the assembled sound insulation wall panel; the thermal conductivity of the nano aerogel is as low as 0.013W / (m·K), which is 3 times higher than the thermal insulation performance of traditional insulation cotton. At the same time, the honeycomb pores produce a resonance absorption effect on 20-50Hz ultra-low frequency noise.

[0037] Example 3, reference Figure 3 A low-frequency sound wave barrier 7 and a medium- and high-frequency sound wave barrier 8 are sequentially arranged between the first reinforcement strip 4 and the second reinforcement strip 13. The low-frequency sound wave barrier 7 and the medium- and high-frequency sound wave barrier 8 absorb and block noise, meeting the acoustic requirements of the construction of the cultural and tourism complex.

[0038] Among them, the low-frequency sound wave barrier 7 is a butyl rubber material, and the medium and high frequency sound wave barrier 8 is a foamed polyurethane material. The molecular structure of butyl rubber contains a large number of methyl groups, and the molecular chain segments are difficult to move, which makes it have higher damping characteristics. It can convert the energy of sound waves into heat energy and consume it. It has a good blocking and absorption effect on low-frequency sound waves and can effectively reduce the propagation of low-frequency noise; the porous structure of the foamed polyurethane material has a good absorption effect on medium and high frequency sound waves. When the sound wave enters the foamed polyurethane material, it will continue to reflect and refract in the porous structure, and rub against the pore wall of the material, thereby converting the sound energy into heat energy, achieving the purpose of absorbing medium and high frequency noise; the combination of butyl rubber material and foamed polyurethane material can achieve full-band sound insulation, provide a quieter environment, and adapt to the construction of buildings in the location of cultural and tourism complexes.

[0039] Example 4, reference Figure 4 An anti-permeation sheet 10 is provided between the medium and high frequency sound wave barrier sheet 8 and the second reinforcement strip 13. A wrapping film 9 is provided around the outside of the anti-permeation sheet 10 to improve the waterproof effect. The wrapping film 9 can surround and wrap the anti-permeation sheet 10 to prevent the anti-permeation sheet 10 from falling off and scattering, thereby improving the stability of the entire wall panel during use.

[0040] The wrapping film 9 is made of aluminum foil, and the anti-permeability sheet 10 is made of silica nanoparticles. Silica nanoparticles can improve the physical properties of the entire wall panel, increase hardness, and prevent water and seepage. Silica nanoparticles can fill the micropores inside the assembled sound insulation wall panel to form a dense structure, blocking the penetration of moisture and pollutants, improving waterproofness and anti-fouling properties. At the same time, silica nanoparticles exhibit good antibacterial effects, helping to keep the interior of the wall clean and hygienic.

[0041] A fireproof sheet 11 is laid between the anti-penetration sheet 10 and the second reinforcement strip 13. The fireproof sheet 11 is made of alternately laminated intumescent fire-retardant coating and glass fiber cloth. When the intumescent fire-retardant coating encounters high temperature, the coating will rapidly expand and foam to form a thick honeycomb carbon foam insulation layer. The thermal conductivity of this insulation layer is extremely low, which can effectively block heat transfer and delay the temperature rise of the internal structure of the wall panel and other materials. The glass fiber cloth itself has good high temperature resistance and a melting point of up to 500°C. It can maintain structural stability in a fire. Alternate lamination with the intumescent fire-retardant coating can prevent the coating from excessive flowing or peeling at high temperatures, enhance the integrity and stability of the fireproof sheet 11, further improve the fire protection capability, and avoid damage to the wall panel caused by combustion.

[0042] In order to further better explain the above embodiment, the present invention also provides a method for using the assembled sound insulation wall panel, comprising the following steps:

[0043] Step S1: Use a sound level meter to measure the noise spectrum of the installation area and select the wall panel configuration based on the noise characteristics: when low-frequency noise is greater than 45dB, use a thickened low-frequency sound wave barrier 7 (10mm butyl rubber); when medium- and high-frequency noise is prominent, use a high-density foamed polyurethane medium- and high-frequency sound wave barrier 8; then use an infrared thermal imager to scan the first reinforcement strip 4 and the second reinforcement strip 13 to verify the uniformity of the insulation cotton filling (temperature difference ≤1.5°C is acceptable);

[0044] Step S2: Adjust the spacing between adjacent wall panels to 20 ± 0.5 cm. Move the wall panels horizontally so that the tongue 15 of the reinforcement ring 3 fits into the slot 16 of another wall panel. Apply pressure until you hear a feedback sound indicating that the tongue 15 and the slot 16 are locked (e.g., a "click" sound, which is the sound of the tongue 15 elastically deforming during the locking process and then rebounding and recovering within the slot 16 after locking). The wall panel assembly is complete.

[0045] Step S3: During sound insulation, the low-frequency sound wave barrier 7 absorbs low-frequency (20-200 Hz) noise, and the medium- and high-frequency sound wave barrier 8 absorbs medium- and high-frequency (200-2000 Hz) noise;

[0046] Step S4: Sound insulation test, using the sound source method to ensure that the low frequency (20-200Hz) sound insulation is ≥30dB, and the medium and high frequency (200-2000Hz) sound insulation is ≥40dB; thermal insulation test, using the heat flow meter method to measure the heat transfer coefficient, ensuring that K ≤0.30W / (m 2 ·K).

[0047] Working principle: When laying thermal insulation wall panels to meet the requirements of the construction location of the cultural and tourism complex, when insulation is required, the heat on the inside and outside of the wall panels is insulated and limited by the first thermal insulation cotton 6 and the second thermal insulation cotton 12 respectively. When the wall panels are subjected to impact, the impact on both sides will be limited by the first reinforcement panel 1, the second reinforcement panel 2 and the reinforcement ring 3. At the same time, the interior of the wall panels is further reinforced and supported by the first reinforcement strip 4 and the second reinforcement strip 13;

[0048] During sound insulation, low-frequency sounds are blocked by the low-frequency sound wave barrier 7, while medium- and high-frequency sounds are blocked by the medium- and high-frequency sound wave barrier 8, thereby achieving full-band sound insulation. During waterproofing, the wrapping film 9 is wrapped with an anti-permeability sheet 10, which can fill the gaps in the wall panel and restrict the liquid.

[0049] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An assembled sound insulation and heat preservation wall panel, comprising a first reinforcement panel (1) and a second reinforcement panel (2) arranged opposite to each other, a first reinforcement strip (4) and a second reinforcement strip (13), characterized in that: A reinforcement ring (3) is arranged around the second reinforcement panel (2) and the first reinforcement panel (1); the first reinforcement strip (4) and the second reinforcement strip (13) are respectively arranged on both sides between the first reinforcement panel (1) and the second reinforcement panel (2); a low-frequency sound wave barrier (7) and a medium- and high-frequency sound wave barrier (8) are arranged in sequence between the first reinforcement strip (4) and the second reinforcement strip (13); a tongue (15) is fixedly connected to one side of the reinforcement ring (3); and a corresponding groove (16) is provided on the other side; and a sealing sheet (17) is adhered to one side of the reinforcement ring (3).

2. The assembled sound insulation and heat preservation wall panel according to claim 1, characterized in that: The first reinforcement panel (1), the second reinforcement panel (2) and the reinforcement ring (3) are made of magnesium alloy.

3. The assembled sound insulation and heat preservation wall panel according to claim 1, characterized in that: The low-frequency sound wave barrier (7) is made of butyl rubber material, and the medium- and high-frequency sound wave barrier (8) is made of foamed polyurethane material.

4. The assembled sound insulation and heat preservation wall panel according to claim 1, characterized in that: An anti-permeation sheet (10) is provided between the medium and high frequency sound wave barrier sheet (8) and the second reinforcement strip (13), and a wrapping film (9) is provided around the outside of the anti-permeation sheet (10).

5. The assembled sound insulation and heat preservation wall panel according to claim 4, characterized in that: The material of the wrapping film (9) is an aluminum foil film, and the material of the anti-permeation sheet (10) is silicon dioxide nanoparticles.

6. The assembled sound insulation and heat preservation wall panel according to claim 4, characterized in that: A fireproof sheet (11) is laid between the anti-permeation sheet (10) and the second reinforcement strip (13).

7. The assembled sound insulation and heat preservation wall panel according to claim 1, characterized in that: A second groove (14) is provided inside the second reinforcement strip (13), a first groove (5) is provided inside the first reinforcement strip (4), the first groove (5) is filled with a first thermal insulation cotton (6), and the second groove is filled with a second thermal insulation cotton (12).

8. The assembled sound insulation and heat preservation wall panel according to claim 7, characterized in that: A regular hexagonal honeycomb array is used in the first groove (5) and the second groove (14).

9. A method for using an assembled sound insulation and heat preservation wall panel, comprising the assembled sound insulation and heat preservation wall panel according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step S1: Use a sound level meter to measure the noise spectrum of the installation area, and select the wall panel configuration according to the noise characteristics: when the low-frequency noise is greater than 45dB, use a thickened low-frequency sound wave barrier (7); when the medium and high-frequency noise is prominent, use a high-density foamed polyurethane medium and high-frequency sound wave barrier (8); then use an infrared thermal imager to scan the first reinforcement strip (4) and the second reinforcement strip (13) to verify the uniformity of the insulation cotton filling; Step S2: Adjust the distance between adjacent wall panels to 20±0.5 cm, move the wall panel horizontally so that the tongue (15) of the reinforcement ring (3) is embedded in the groove (16) of another wall panel, and apply pressure until a feedback sound of the tongue (15) and the groove (16) being locked is heard, and the wall panel assembly is completed; Step S3: During sound insulation, the low-frequency sound wave barrier (7) absorbs low-frequency noise, and the medium- and high-frequency sound wave barrier (8) absorbs medium- and high-frequency noise; Step S4: Performance test: Sound insulation test, using the sound source method to ensure that the low frequency (20-200Hz) sound insulation is ≥30dB, and the medium and high frequency (200-2000Hz) sound insulation is ≥40dB; thermal insulation test, using the heat flow meter method to measure the heat transfer coefficient, ensuring that K ≤0.30W / (m 2 ·K).

Citation Information

Patent Citations

  • Novel heat preservation and sound insulation wood wall

    CN211666012U