Sound absorbing member and sound emitting device

Abstract

The application discloses an acoustic absorption piece and a sound production device. The acoustic absorption piece comprises porous acoustic absorption material, silica vesicle material and adhesive. The silica vesicle material forms a hollow shell structure and is distributed between the porous acoustic absorption material. The adhesive is used to bond the porous acoustic absorption material and the silica vesicle material into an integrated whole. The compression resilience of the acoustic absorption piece is 50%-80% after compression to 1 / 3 of the size of the acoustic absorption piece, and / or the crushing resistance of the acoustic absorption piece is greater than 0.1 N. The acoustic absorption piece can effectively solve the problem that the acoustic absorption particles in the sound production device are prone to be crushed under high power, so that the sound production device can still have high low-frequency performance after high-power work, and the durability and service life of the sound production device are improved.

Description

Technical Field

[0001] This invention relates to the field of acoustics, specifically to a sound-absorbing component and a sound-generating device. Background Technology

[0002] In recent years, the trend towards thinner and lighter electronic products has resulted in less space for sound-generating devices. Consequently, these devices have become increasingly flat, significantly reducing the volume of the acoustic cavity and impacting their low-frequency performance. Related technologies address this by filling the acoustic cavity with porous sound-absorbing material. The porous structure of this material allows for rapid adsorption and desorption of gases within the cavity, effectively increasing the virtual resonant space and thus lowering the resonant frequency F0, thereby improving the device's low-frequency sensitivity.

[0003] However, in related technologies, due to the poor toughness of inorganic adhesives after curing, the strength of sound-absorbing components bonded with inorganic adhesives is not high. When the sound-generating device is in a high-power working state, the sound-absorbing particles filled in the sound cavity of the sound-generating device collide and rub against each other, and are very prone to deformation and breakage. The broken dust enters the sound-generating unit, affecting the normal operation of the sound-generating unit, resulting in an increase in the resonant frequency F0 and a decrease in low-frequency performance. Summary of the Invention

[0004] The main objective of this invention is to provide a sound-absorbing component and a sound-generating device, aiming to solve the technical problem that the low-frequency performance of sound-generating devices deteriorates after high-power operation in related technologies.

[0005] To achieve the above objectives, this application provides a sound-absorbing component, comprising a porous sound-absorbing material, a silica vesicle material, and an adhesive. The silica vesicle material is formed as a hollow shell-like structure and distributed between the porous sound-absorbing material. The adhesive is used to bond the porous sound-absorbing material and the silica vesicle material together. The sound-absorbing component has a compression rebound rate of 50%-80% after being compressed to 1 / 3 of its size and subjected to external force, and / or the sound-absorbing component has a crushing resistance greater than 0.1N.

[0006] Optionally, the silica foam material accounts for 5%-25% of the mass of the sound-absorbing component.

[0007] Optionally, the silica vesicle material is formed as a multilayer vesicle structure, the silica vesicle material including inter-wall pores located between two adjacent layers and vesicle pores located at the center.

[0008] Optionally, the diameter of the inter-wall pores is 2-4 nm, and the diameter of the vesicle pores is 10-50 nm; And / or, the particle size of the silica vesicle material is 1-200 nm.

[0009] Optionally, the pore wall thickness of the pore structure is 4-25 nm.

[0010] Optionally, the bulk density of the silica vesicle material is 0.01-0.3 g / mL.

[0011] Optionally, the adhesive includes inorganic adhesives. The inorganic adhesive includes at least one of silicate sol, silica sol, aluminum sol, phosphate sol, sulfate, and borate. And / or, the inorganic adhesive accounts for 1-50% of the mass of the sound-absorbing component.

[0012] Optionally, the porous sound-absorbing material includes zeolite powder particles, wherein the silicon-to-aluminum mass ratio of the zeolite powder particles is less than 200, and the average particle size of the zeolite powder particles is greater than 10 μm.

[0013] Optionally, the zeolite powder particles have at least one of the crystal structures of MOR, MFI, and FER.

[0014] Optionally, the weight change of the sound-absorbing component after being left to stand at room temperature for 24 hours in an environment with 95% humidity is less than 5%.

[0015] Optionally, the pore volume of the sound-absorbing element is greater than 0.01 mL / g.

[0016] This application also provides a sound-generating device, which includes a housing, a sound-generating unit, and a sound-absorbing component as described above; The sound-generating unit is disposed within the housing, and the sound-generating unit and the housing cooperate to form a front acoustic cavity and a rear acoustic cavity, and the sound-absorbing component is disposed in the front acoustic cavity and / or the rear acoustic cavity.

[0017] This application provides a sound-absorbing component and a sound-generating device. The sound-absorbing component includes a porous sound-absorbing material, a silica vesicle material, and an adhesive. The silica vesicle material is formed into a hollow shell-like structure and distributed between the porous sound-absorbing material. The adhesive is used to bond the porous sound-absorbing material and the silica vesicle material together. The sound-absorbing component has a compression rebound rate of 50%-80% after being compressed to 1 / 3 of its size, and / or the sound-absorbing component has a crushing resistance greater than 0.1N. In this way, when the sound-generating device is operating at high power, the porous sound-absorbing materials filling the sound cavity of the sound-generating device collide and rub against each other. The silica foam material can provide a buffering effect, thereby effectively avoiding friction and collision between the porous sound-absorbing materials, greatly reducing the risk of breakage of the sound-absorbing components, so that the compression rebound rate of the sound-absorbing components reaches 50%-80%, and / or, the crushing resistance of the sound-absorbing components is greater than 0.1N. This overcomes the technical defects of the sound-absorbing particles filling the sound cavity of the sound-generating device colliding and rubbing against each other when the sound-generating device is operating at high power, which are prone to deformation and breakage. The broken dust enters the sound-generating unit, affecting the normal operation of the sound-generating unit, resulting in an increase in the resonant frequency F0 and a decrease in low-frequency performance. This allows the sound-generating device to still have high low-frequency performance after high-power operation, improving the durability and service life of the sound-generating device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the sound-absorbing component of the present invention; Figure 2 This is a schematic diagram of the structure of one possible embodiment of the silica vesicle material in this invention. Figure 3 This is a comparison chart of the frequency response curves of the embodiments and comparative examples of the present invention before the reliability test; Figure 4 This is a comparison graph of the frequency response curves of the embodiments and comparative examples of the present invention after reliability experiments.

[0020] Explanation of reference numerals in the accompanying drawings of the embodiments:

[0021] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] This application provides a sound-absorbing component. In one embodiment of the sound-absorbing component, refer to... Figure 1 The sound-absorbing component includes a porous sound-absorbing material 20, a silica vesicle material 10, and an adhesive. The silica vesicle material 10 is formed as a hollow shell-like structure and is distributed between the porous sound-absorbing material 20. The adhesive is used to bond the porous sound-absorbing material 20 and the silica vesicle material 10 together. The sound-absorbing component has a compression rebound rate of 50%-80% after being compressed to 1 / 3 of its size and subjected to external force, and / or the sound-absorbing component has a crushing resistance greater than 0.1N.

[0024] In this embodiment, the porous sound-absorbing material refers to a material with a network structure composed of interconnected pores, including one or more mixtures of activated carbon, zeolite powder, activated silica, porous alumina, and molecular sieves. Compared to continuous medium materials, porous sound-absorbing materials have advantages such as low relative density, high specific strength, high specific surface area, light weight, sound insulation, heat insulation, and good permeability. Utilizing the internal pore structure of the porous sound-absorbing material, the gas in the acoustic cavity of the sound-generating device can be rapidly adsorbed and desorbed, achieving a virtual increase in the resonant space of the acoustic cavity of the sound-generating device, thereby effectively reducing the resonant frequency F0 of the sound-generating device and improving the low-frequency sensitivity of the sound-generating device. However, the pore walls of the porous sound-absorbing material are relatively thin. When the sound-generating device is in a high-power operating state, the sound-absorbing particles filling the acoustic cavity of the sound-generating device collide and rub against each other, easily deforming and breaking. The broken dust enters the sound-generating unit, affecting the normal operation of the sound-generating unit, leading to an increase in the resonant frequency F0 and a decrease in low-frequency performance.

[0025] Optionally, the porous sound-absorbing material includes zeolite powder particles, wherein the silicon-to-aluminum mass ratio of the zeolite powder particles is less than 200, and the average particle size of the zeolite powder particles is greater than 10 μm.

[0026] In this embodiment, the zeolite powder particles have numerous pores with a wide pore size distribution. That is, the zeolite powder particles typically contain multiple pores of different sizes, which is more conducive to improving the acoustic performance of the sound-generating device. If the particle size of the porous sound-absorbing material is too small, fine fragments of porous sound-absorbing material are easily left behind during the preparation process. These fragments are also easily generated during the processing and use of the sound-absorbing component. These fine fragments may enter the sound-generating unit, affecting its normal operation, leading to an increase in the resonant frequency F0 and a decrease in low-frequency performance. Therefore, the average particle size of the zeolite powder particles is determined to be greater than 10 μm. The zeolite powder particles with a silicon-to-aluminum mass ratio of less than 200 contain abundant aluminum, which can better bond with inorganic adhesives, resulting in higher bonding strength between the zeolite powder particles. Optionally, the average particle size of the zeolite powder particles can be 11 μm, 13 μm, 15 μm, 18 μm, etc., and the silicon-to-aluminum mass ratio in the zeolite powder particles can be 100, 120, 150, 180, etc.

[0027] Optionally, the zeolite powder particles have at least one of the crystal structures of MOR, MFI, and FER.

[0028] In this embodiment, different crystal structures affect the ability of zeolite powder particles to adsorb and desorb air molecules. Zeolite powder particles with at least one of the MOR, MFI and FAU crystal structures can provide a pore structure that facilitates the adsorption and desorption of air molecules, and the structure is regular and has high sound absorption performance.

[0029] The adhesive refers to a substance that can bond material surfaces together. It can be at least one of silicate sol, silica sol, aluminum sol, phosphate sol, borates, sulfates, magnesium aluminum silicate sol, and various metal oxide sols, etc., and this invention does not limit its use. The adhesive is used to bond the porous sound-absorbing material and the silica vesicle material together.

[0030] Optionally, the adhesive includes at least one of silicate sol, silica sol, aluminum sol, phosphate sol, sulfate, and borate. And / or, the inorganic adhesive accounts for 1-50% of the mass of the sound-absorbing component.

[0031] In this embodiment, the adhesive includes at least one of silicates, silica sols, aluminosilicates, phosphates, sulfates, and borates. These adhesives have low curing temperatures, typically below 100°C. The low curing temperature will not damage the sound-generating monomers or adversely affect their performance. Therefore, there are more options for the preparation method. The sound-absorbing component can be prepared separately and then assembled into the sound cavity of the sound-generating device. Alternatively, the sound-absorbing particles can be formed and then filled into the sound cavity of the sound-generating device, and then the sound-absorbing particles can be post-cured to form a block-shaped sound-absorbing component. This can improve the assembly efficiency of the sound-absorbing component.

[0032] Excessive addition of the adhesive may clog the pores on the surface of the porous sound-absorbing material, affecting the acoustic performance of the sound-generating device. Therefore, the inorganic adhesive is determined to account for 1-50% of the mass of the sound-absorbing component, for example, 1%, 5%, 10%, 20%, 30%, 40%, 50%, etc.

[0033] The silica vesicle material refers to silica particles with a hollow, layered structure. The layered structure refers to a structure consisting of hollow pores and a shell wall structure completely or partially covering the pores. The silica vesicle material may have one or more layered structures. In one implementable embodiment, refer to... Figure 2 The silica vesicle material may include vesicle pores 11 located in the geometric center region and at least one shell wall structure 13 stacked around the vesicle pores 11. The shell wall structure 13 is made of silica, and pore structures of the same or different sizes may also be formed on the shell wall structure 13, which can connect the gaps between the shell wall structures. The silica vesicle material is distributed among the porous sound-absorbing materials. Therefore, when the sound-generating device is in a high-power operating state, the silica vesicle material can provide a buffering effect, thereby effectively avoiding friction and collision between the porous sound-absorbing materials, greatly reducing the risk of breakage of the sound-absorbing component, making the compression rebound rate of the sound-absorbing component reach 50%-80%, and / or, the crushing resistance of the sound-absorbing component is greater than 0.1N.

[0034] Optionally, the silica foam material accounts for 5%-25% of the mass of the sound-absorbing component.

[0035] In this embodiment, if the amount of silica vesicle material added is too small, the buffering effect provided is small, and the risk of breakage of the sound-absorbing component remains high; if the amount of silica vesicle material added is too large, the mass proportion of the porous sound-absorbing material is relatively reduced, the pore structure is relatively reduced, the effect of virtually increasing the resonant space of the sound-generating device is poor, and the acoustic performance will also be reduced. Therefore, the mass proportion of the silica vesicle material in the sound-absorbing component is determined to be 5%-25%, for example, 5%, 10%, 15%, 20%, 25%, etc.

[0036] Optionally, refer to Figure 2 The silica vesicle material is formed as a multilayer vesicle structure, and the silica vesicle material includes inter-wall pores 12 located between two adjacent layers and vesicle pores 11 located at the center.

[0037] In this embodiment, the silica vesicle material is formed as a multi-layered vesicle structure. The silica vesicle material includes inter-wall pores 12 located between adjacent layers and vesicle pores 11 located at the center. This multi-layered vesicle structure provides a buffering effect, effectively preventing frictional collisions between porous sound-absorbing materials and significantly reducing the risk of sound-absorbing component breakage. Furthermore, the vesicle walls of each layer can have interconnected pore structures, allowing gas in the sound cavity of the sound-generating device to be rapidly adsorbed and desorbed within the multi-layered vesicle structure of the silica vesicle material through these pores. This achieves a virtual increase in the resonant space of the sound cavity, effectively reducing the resonant frequency F0 of the sound-generating device and improving its low-frequency sensitivity. The vesicle pore 11 refers to a vesicle-like structure located at the geometric center of the silica vesicle material and completely enclosed within it. These vesicle pores have strong resistance to deformation, providing sufficient buffering for the sound-generating device and effectively preventing frictional collisions between porous sound-absorbing materials, thus significantly reducing the risk of sound-absorbing component breakage. The inter-wall hole 12 refers to the gap located between two adjacent vesicle structures, which can further provide a buffering effect for the sound-generating device and enhance the resistance of the sound-absorbing component to deformation.

[0038] Optionally, the diameter of the inter-wall pores is 2-4 nm, and the diameter of the vesicle pores is 10-50 nm; And / or, the particle size of the silica vesicle material is 1-200 nm.

[0039] In this embodiment, if the aperture of the pore structure is too small, it is difficult to provide sufficient buffering, and the virtual increase in the resonant space of the sound-generating device's acoustic cavity is minimal; however, if the aperture of the pore structure is too large, it will lead to a decrease in the strength of the silica vesicle material, thus reducing the buffering effect. Therefore, the aperture of the pore structure is determined to be 1-200 nm, such as 1 nm, 5 nm, 10 nm, 50 nm, 100 nm, 150 nm, 200 nm, etc.

[0040] If the pore size of the vesicle pore 11 is too small, it will be difficult to provide sufficient buffering. Conversely, if the pore size is too large, it will reduce the strength of the silica vesicle material and decrease the buffering effect. Therefore, the pore size of the vesicle pore 11 is determined to be 10-50 nm, such as 10 nm, 20 nm, 30 nm, 40 nm, 50 nm, etc. If the pore size of the inter-wall pore 12 is too large, the wall thickness of each vesicle structure will be relatively small, which will reduce the strength of the silica vesicle material. However, if the pore size of the inter-wall pore 12 is too small, the effect of virtually increasing the acoustic cavity resonance space of the sound-generating device and the buffering effect will not be significant. Therefore, the pore size of the inter-wall pore 12 is determined to be 2-4 nm, such as 2 nm, 3 nm, 4 nm, etc.

[0041] Optionally, the pore wall thickness of the pore structure is 4-25 nm.

[0042] In this embodiment, if the pore wall thickness of the pore structure is too small, the strength of the silica vesicle material will decrease; if the pore wall thickness is too large, the volume of the hollow region in the pore structure will be relatively small, resulting in an insignificant virtual increase in the acoustic cavity resonance space and a weak buffering effect in the sound-generating device. Therefore, the pore wall thickness of the pore structure is determined to be 4-25 nm, such as 4 nm, 6 nm, 10 nm, 15 nm, 20 nm, 25 nm, etc.

[0043] Optionally, the bulk density of the silica vesicle material is 0.01-0.3 g / mL.

[0044] In this embodiment, if the bulk density of the silica vesicle material is too low, there may be insufficient local buffering effect in the sound-absorbing component, and the risk of breakage of the sound-absorbing component remains relatively high. If the bulk density of the silica vesicle material is too high, the mass ratio of porous sound-absorbing material is relatively reduced, the pore structure is relatively reduced, the effect of virtually increasing the resonant space of the sound-generating device is poor, and the acoustic performance will also be reduced. Therefore, the bulk density of the silica vesicle material is determined to be 0.01-0.3 g / mL, for example, 0.01 g / mL, 0.05 g / mL, 0.1 g / mL, 0.2 g / mL, 0.3 g / mL, etc.

[0045] Optionally, the weight change of the sound-absorbing component after being left to stand at room temperature for 24 hours in an environment with 95% humidity is less than 5%.

[0046] In this embodiment, the sound-absorbing component has low moisture absorption performance. After the sound-absorbing component is placed in a 95% humidity environment at room temperature for 24 hours, it is taken out and left to stand naturally for 20 minutes before a weight test is performed. It was found that the weight change of the sound-absorbing component is less than 5%. The sound-absorbing component has low moisture absorption performance, higher stability, is not easy to age, and has a longer service life.

[0047] Optionally, the pore volume of the sound-absorbing element is greater than 0.01 mL / g.

[0048] In this embodiment, the pore volume of the sound-absorbing component is greater than 0.01 mL / g, which enables the gas in the sound cavity of the sound-generating device to be rapidly adsorbed and desorbed, thereby achieving the effect of virtually increasing the resonant space of the sound cavity of the sound-generating device. This effectively reduces the resonant frequency F0 of the sound-generating device, improves the low-frequency sensitivity of the sound-generating device, and ensures that the sound-generating device has relatively good acoustic performance.

[0049] In this embodiment, the sound-absorbing component includes a porous sound-absorbing material, a silica vesicle material, and an adhesive. The silica vesicle material is formed as a hollow shell-like structure and distributed between the porous sound-absorbing material. The adhesive is used to bond the porous sound-absorbing material and the silica vesicle material together. The sound-absorbing component has a compression rebound rate of 50%-80% after being compressed to 1 / 3 of its size, and / or the sound-absorbing component has a crushing resistance greater than 0.1N. In this way, when the sound-generating device is operating at high power, the porous sound-absorbing materials filling the sound cavity of the sound-generating device collide and rub against each other. The silica foam material can provide a buffering effect, thereby effectively avoiding friction and collision between the porous sound-absorbing materials, greatly reducing the risk of breakage of the sound-absorbing components, so that the compression rebound rate of the sound-absorbing components reaches 50%-80%, and / or, the crushing resistance of the sound-absorbing components is greater than 0.1N. This overcomes the technical defects of the sound-absorbing particles filling the sound cavity of the sound-generating device colliding and rubbing against each other when the sound-generating device is operating at high power, which are prone to deformation and breakage. The broken dust enters the sound-generating unit, affecting the normal operation of the sound-generating unit, resulting in an increase in the resonant frequency F0 and a decrease in low-frequency performance. This allows the sound-generating device to still have high low-frequency performance after high-power operation, improving the durability and service life of the sound-generating device.

[0050] Furthermore, the present invention also provides a sound-generating device, the sound-generating device comprising a housing, a sound-generating unit, and a sound-absorbing element as described in the above embodiments; The sound-generating unit is disposed within the housing, and the sound-generating unit and the housing cooperate to form a front acoustic cavity and a rear acoustic cavity, and the sound-absorbing component is disposed in the front acoustic cavity and / or the rear acoustic cavity.

[0051] The sound-generating device provided in this application solves the technical problem in related technologies where the low-frequency performance of sound-generating devices deteriorates after high-power operation. Compared with the prior art, the beneficial effects of the sound-generating device provided in this embodiment are the same as the beneficial effects of the housing in the above embodiments, and will not be repeated here.

[0052] The housing of the present invention will now be described in detail with reference to specific embodiments and comparative examples. It is to be understood that the following description is merely exemplary and not intended to limit the specific scope of the invention.

[0053] Example The sound-absorbing component includes zeolite powder, silica foam material, and adhesive. The zeolite powder and silica foam material are bonded together by the adhesive, wherein the silica foam material accounts for 20% of the mass of the sound-absorbing component.

[0054] Comparative Example The sound-absorbing component includes zeolite powder and an adhesive, which binds the zeolite powder together.

[0055] The same number of sound-absorbing components from the embodiments and comparative examples were assembled into the acoustic rear cavity of the same model of sound-generating device. Before the reliability test, frequency response curve tests were performed on the sound-generating devices corresponding to the embodiments and comparative examples. The test results before the reliability test are as follows: Figure 3 As shown; then, reliability tests were conducted on the sound-generating devices corresponding to the embodiments and comparative examples. After the reliability tests, the F0 of the sound-generating devices was tested, and the sound-generating devices were disassembled to observe the damage of the sound-absorbing components. The test results are shown in Table 1. The frequency response curves of the sound-generating devices corresponding to the embodiments and comparative examples were then tested again. The test results after the reliability tests are shown in Table 1. Figure 4 As shown. The reliability test conditions were: 65℃ temperature, 95%RH environment, 3.5V voltage with noise signal, and continuous power-on operation for 120 hours.

[0056] Table 1

[0057] from Figure 3 As can be seen from the data, the F0 values ​​of the sound-generating devices corresponding to the embodiments and comparative examples are close, indicating that there is no loss in acoustic performance after adding silica vesicle material.

[0058] From Table 1 and Figure 4 It can be seen that the F0 of the sound-generating device corresponding to the embodiment changed little after the reliability test, while the F0 of the sound-generating device corresponding to the comparative example increased significantly after the reliability test. Moreover, the sound-absorbing component of the comparative example was severely broken and shedding powder. This indicates that the addition of silica vesicle material can buffer the porous sound-absorbing material, avoid collision and friction between porous sound-absorbing materials, and reduce the risk of sound-absorbing component breakage.

[0059] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A sound-absorbing component, characterized in that, The sound-absorbing component includes a porous sound-absorbing material, a silica vesicle material, and an adhesive. The silica vesicle material is formed as a hollow shell-like structure and distributed between the porous sound-absorbing material. The adhesive is used to bond the porous sound-absorbing material and the silica vesicle material together. The sound-absorbing component has a compression rebound rate of 50%-80% after being compressed to 1 / 3 of its size, and / or the sound-absorbing component has a crushing resistance greater than 0.1N. The silica vesicle material is formed as a multi-layered vesicle structure, including inter-wall pores between adjacent layers and vesicle pores at the center.

2. The sound-absorbing component as described in claim 1, characterized in that, The silica foam material accounts for 5%-25% of the mass of the sound-absorbing component.

3. The sound-absorbing component as described in claim 1, characterized in that, The diameter of the inter-wall pores is 2-4 nm, and the diameter of the vesicle pores is 10-50 nm; And / or, the particle size of the silica vesicle material is 1-200 nm.

4. The sound-absorbing component as described in claim 1, characterized in that, The bulk density of the silica vesicle material is 0.01-0.3 g / mL.

5. The sound-absorbing component as described in claim 1, characterized in that, The adhesive includes inorganic adhesives. The inorganic adhesive includes at least one of silicate sol, silica sol, aluminum sol, phosphate sol, sulfate, and borate. And / or, the inorganic adhesive accounts for 1-50% of the mass of the sound-absorbing component.

6. The sound-absorbing component as described in claim 1, characterized in that, The porous sound-absorbing material includes zeolite powder particles, wherein the silicon-to-aluminum mass ratio of the zeolite powder particles is less than 200, and the average particle size of the zeolite powder particles is greater than 10 μm.

7. The sound-absorbing component as described in claim 6, characterized in that, The zeolite powder particles have at least one of the crystal structures MOR, MFI, and FER.

8. The sound-absorbing component as described in any one of claims 1-7, characterized in that, The weight change of the sound-absorbing component is less than 5% after being left to stand at room temperature for 24 hours in an environment with 95% humidity.

9. The sound-absorbing component as described in any one of claims 1-7, characterized in that, The pore volume of the sound-absorbing element is greater than 0.01 mL / g.

10. A sound-generating device, characterized in that, The sound-generating device includes a housing, a sound-generating unit, and a sound-absorbing element as described in any one of claims 1-9; The sound-generating unit is disposed within the housing, and the sound-generating unit and the housing cooperate to form a front acoustic cavity and a rear acoustic cavity, and the sound-absorbing component is disposed in the front acoustic cavity and / or the rear acoustic cavity.

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