Multifunctional sound absorption and insulation composite structure based on nano aerogel

Abstract

The utility model discloses a multifunctional sound absorption and insulation composite structure based on nano aerogel in the technical field of sound insulation materials, which comprises a protective surface pore plate, a foamed ceramic sound absorption layer, a nano aerogel filling layer and a sound insulation layer, the protective surface pore plate is made of light high-strength materials, the foamed ceramic sound absorption layer is made of high-performance foamed ceramic materials, and the nano aerogel filling layer is made of nano aerogel. Pores of the foamed ceramic sound absorption layer are filled with the nano aerogel filling layer, the nano aerogel adopts silicon dioxide aerogel or carbon aerogel, and the sound insulation layer adopts a damping interlayer steel plate or an aluminum magnesium alloy plate. The sound absorption, heat insulation, sound insulation and fire prevention functions are efficiently integrated, the nanometer aerogel filling layer is made of silicon dioxide aerogel and has excellent heat insulation and sound absorption performance, and the foamed ceramic sound absorption layer is made of a high-performance foamed ceramic material and has excellent sound absorption, heat insulation and fire prevention performance.

Description

Technical Field

[0001] This utility model relates to the field of sound insulation materials technology, specifically a multifunctional sound absorption and insulation composite structure based on nano-aerogel. Background Technology

[0002] With the increasing demand for high-efficiency sound-absorbing and insulating materials in fields such as construction, transportation, and industry, especially for the control of low-frequency noise, lightweight and multifunctional integration are the future development trends of acoustic materials.

[0003] Traditional sound absorption and insulation structures have poor low-frequency sound absorption effects, relying on increasing thickness or cavity depth, which leads to increased weight and cost. They also have low multi-functional integration, making it difficult to simultaneously meet the needs of sound absorption, sound insulation, heat insulation, and fireproofing.

[0004] Based on this, the present invention designs a multifunctional sound-absorbing and sound-insulating composite structure based on nano-aerogel to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a multifunctional sound-absorbing and sound-insulating composite structure based on nano-aerogel, in order to solve the problems mentioned in the background art, such as poor low-frequency sound absorption effect of traditional sound-absorbing and sound-insulating structures, reliance on increasing thickness or cavity depth, resulting in increased weight and cost, low multifunctional integration, and difficulty in simultaneously meeting the needs of sound absorption, sound insulation, heat insulation, and fire prevention.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multifunctional sound-absorbing and sound-insulating composite structure based on nano-aerogel, comprising a perforated panel, a foam ceramic sound-absorbing layer, a nano-aerogel filling layer, and a sound-insulating layer. The perforated panel is made of lightweight and high-strength material, the foam ceramic sound-absorbing layer is made of high-performance foam ceramic material, the nano-aerogel filling layer fills the pores of the foam ceramic sound-absorbing layer, and the sound-insulating layer is made of damping sandwich steel plate or aluminum-magnesium alloy plate.

[0007] Preferably, the thickness of the foam ceramic sound-absorbing layer is 20mm-50mm.

[0008] Preferably, the thickness of the nano-aerogel filling layer is 10mm-20mm.

[0009] Preferably, the thickness of the sound insulation layer is 1.5mm-3mm.

[0010] Sound absorption: Foam ceramic sound-absorbing layer + nano aerogel filling layer, covering the frequency range of 50Hz-4000Hz.

[0011] Sound insulation: The outer panel is made of damped sandwich steel plate or aluminum-magnesium alloy plate, with a sound insulation of >40dB.

[0012] Thermal insulation: Nano-aerogel filling layer with a thermal conductivity of <0.02W / m·K.

[0013] Fireproof: Foam ceramic + nano aerogel, achieving Class A fireproof standard.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model adopts a multi-layer composite design, and by optimizing the interlayer structure and material combination, it achieves multi-functional and efficient integration of sound absorption, heat insulation, sound insulation and fire resistance. The nano aerogel filling layer adopts silica aerogel, which has excellent heat insulation and sound absorption performance. The foam ceramic sound absorbing layer adopts high-performance foam ceramic material, which has excellent sound absorption, heat insulation and fire resistance performance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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 schematic diagram of the overall structure of this utility model.

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 1-Sound insulation layer, 2-Nano aerogel filling layer, 3-Foam ceramic sound absorption layer, 4-Wall panel. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see the appendix Figure 1 This utility model provides a technical solution: a multifunctional sound-absorbing and sound-insulating composite structure based on nano-aerogel, including a protective hole panel 4, a foam ceramic sound-absorbing layer 3, a nano-aerogel filling layer 2, and a sound insulation layer 1. The protective hole panel 4 is made of lightweight and high-strength material, the foam ceramic sound-absorbing layer 3 is made of high-performance foam ceramic material, the nano-aerogel filling layer 2 fills the pores of the foam ceramic sound-absorbing layer 3, and the sound insulation layer 1 is made of damping sandwich steel plate or aluminum-magnesium alloy plate.

[0021] The thickness of the foam ceramic sound-absorbing layer 3 is 20mm-50mm, the thickness of the nano-aerogel filling layer 2 is 10mm-20mm, and the thickness of the sound insulation layer 1 is 1.5mm-3mm.

[0022] Example 1: A multifunctional sound-absorbing and sound-insulating composite structure based on nano-aerogel includes a perforated panel 4, a foam ceramic sound-absorbing layer 3, a nano-aerogel filling layer 2, and a sound insulation layer 1. The perforated panel 4 is made of lightweight and high-strength material, protecting the internal structure and providing an aesthetically pleasing surface. The foam ceramic sound-absorbing layer 3 is made of high-performance foam ceramic material, absorbing mid-to-high frequency noise and providing heat insulation and fire resistance. The foam ceramic sound-absorbing layer 3 has a thickness of 20mm. The nano-aerogel filling layer 2 fills the pores of the foam ceramic sound-absorbing layer 3, improving heat insulation performance and assisting in sound absorption. The nano-aerogel filling layer 2 has a thickness of 10mm. The sound insulation layer 1 is made of damping sandwich steel plate or aluminum-magnesium alloy plate, isolating noise transmission and providing structural strength. The sound insulation layer 1 has a thickness of 1.5mm.

[0023] Example 2: A multifunctional sound-absorbing and sound-insulating composite structure based on nano-aerogel includes a perforated panel 4, a foam ceramic sound-absorbing layer 3, a nano-aerogel filling layer 2, and a sound insulation layer 1. The perforated panel 4 is made of lightweight and high-strength material, protecting the internal structure and providing an aesthetically pleasing surface. The foam ceramic sound-absorbing layer 3 is made of high-performance foam ceramic material, absorbing mid-to-high frequency noise and providing heat insulation and fire resistance. The foam ceramic sound-absorbing layer 3 has a thickness of 50mm. The nano-aerogel filling layer 2 fills the pores of the foam ceramic sound-absorbing layer 3, improving heat insulation performance and assisting in sound absorption. The nano-aerogel filling layer 2 has a thickness of 20mm. The sound insulation layer 1 is made of damping sandwich steel plate or aluminum-magnesium alloy plate, isolating noise transmission and providing structural strength. The sound insulation layer 1 has a thickness of 3mm.

[0024] Example 3: A multifunctional sound-absorbing and sound-insulating composite structure based on nano-aerogel includes a perforated panel 4, a foam ceramic sound-absorbing layer 3, a nano-aerogel filling layer 2, and a sound insulation layer 1. The perforated panel 4 is made of lightweight and high-strength material, protecting the internal structure and providing an aesthetically pleasing surface. The foam ceramic sound-absorbing layer 3 is made of high-performance foam ceramic material, absorbing mid-to-high frequency noise and providing heat insulation and fire resistance. The foam ceramic sound-absorbing layer 3 has a thickness of 35mm. The nano-aerogel filling layer 2 fills the pores of the foam ceramic sound-absorbing layer 3, improving heat insulation performance and assisting in sound absorption. The nano-aerogel filling layer 2 has a thickness of 15mm. The sound insulation layer 1 is made of damping sandwich steel plate or aluminum-magnesium alloy plate, isolating noise transmission and providing structural strength. The sound insulation layer 1 has a thickness of 2.25mm.

[0025] The multifunctional sound-absorbing and sound-insulating composite structure based on nano-aerogel from Example 1 is selected. The foam ceramic sound-absorbing layer 3 is fabricated using a foaming process or 3D printing technology. The surface of the foam ceramic board is waterproofed or self-cleaning treated. Two layers of nano-aerogel are filled into the pores of the foam ceramic sound-absorbing layer 3 using a spraying or molding process. The sound insulation layer 1 uses a damping sandwich steel plate or aluminum-magnesium alloy plate, with a sound-insulating coating applied to its surface. The foam ceramic sound-absorbing layer 3 and the sound insulation layer 1 are then composited by hot pressing or adhesive bonding. Performance testing is conducted. The sound absorption performance is assessed using the impedance tube method to test the sound absorption coefficient (α). With an α value greater than 0.8 in the frequency range of 50Hz-4000Hz, the sound insulation performance is tested to achieve a target of >40dB. The thermal insulation performance is tested to achieve a target of <0.02W / m·K. The fire resistance performance meets the UL94 or GB8624 standard and achieves Class A flame retardancy. This sound-absorbing and sound-insulating composite material has industry-leading performance in sound absorption, sound insulation, heat insulation, and fire resistance. It has high performance and is 20%-30% lighter than traditional structures. It also integrates multiple functions such as sound absorption, sound insulation, heat insulation, fire resistance, and electromagnetic shielding. It uses environmentally friendly materials such as foam ceramics and nano-aerogels and has good environmental performance.

[0026] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A multifunctional sound-absorbing and sound-insulating composite structure based on nano-aerogel, comprising a perforated panel (4), a foam ceramic sound-absorbing layer (3), a nano-aerogel filling layer (2), and a sound-insulating layer (1), characterized in that: The protective panel (4) is made of lightweight and high-strength material, the foam ceramic sound-absorbing layer (3) is made of high-performance foam ceramic material, the nano aerogel filling layer (2) is filled in the pores of the foam ceramic sound-absorbing layer (3), the nano aerogel is made of silica aerogel or carbon aerogel, and the sound insulation layer (1) is made of damping sandwich steel plate or aluminum-magnesium alloy plate.

2. The multifunctional sound-absorbing and sound-insulating composite structure based on nano-aerogel according to claim 1, characterized in that: The thickness of the foam ceramic sound-absorbing layer (3) is 20mm-50mm.

3. The multifunctional sound-absorbing and sound-insulating composite structure based on nano-aerogel according to claim 1, characterized in that: The thickness of the nano-aerogel filling layer (2) is 10mm-20mm.

4. The multifunctional sound-absorbing and sound-insulating composite structure based on nano-aerogel according to claim 1, characterized in that: The thickness of the sound insulation layer (1) is 1.5mm-3mm.

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