CN106875934A - Metal organic frame sound-absorbing part and sound-producing device module - Google Patents
Metal organic frame sound-absorbing part and sound-producing device module Download PDFInfo
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- CN106875934A CN106875934A CN201710203932.XA CN201710203932A CN106875934A CN 106875934 A CN106875934 A CN 106875934A CN 201710203932 A CN201710203932 A CN 201710203932A CN 106875934 A CN106875934 A CN 106875934A
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- sound
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- absorbing
- absorbing part
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
- G10K11/165—Particles in a matrix
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a kind of metal organic frame sound-absorbing part.The metal organic frame sound-absorbing part includes metal organic frame porous material, the metal organic frame porous material is configured by metal ion and carboxylic acid and formed, there is micropore and mesoporous in the metal organic frame porous material, the pore diameter range of the micropore is 0.3 0.8 nanometers, the mesoporous pore diameter range is 2 40 nanometers, the aperture in the metal organic frame sound-absorbing part with macropore, the macropore is more than 0.1 micron.One of the invention has technical effect that, metal organic frame sound-absorbing part compared to traditional foaming kind sound-absorbing material, with more preferable sound-absorbing effect.
Description
Technical field
The invention belongs to sound-producing device technical field, in particular it relates to a kind of metal organic frame sound-absorbing part and
Sound-producing device module.
Background technology
Sound-producing device module as a kind of energy converter for converting electrical signals to voice signal, be in electro-acoustic product not
The part that can or lack, is often used in the consumer electronics products such as mobile phone, computer.Sound-producing device module is generally by shell and hair
Whole module shell inner chamber is separated into two cavitys of the preceding operatic tunes and the rear operatic tunes by acoustic device monomer composition, sound-producing device monomer.
In order to improve the acoustical behavior of sound-producing device module, in the prior art frequently with setting up sound-absorbing part in the rear operatic tunes
Means, to absorb acoustic energy, are equivalent to expansion rear chamber volume, and module F0 effects are reduced so as to reach.Traditional sound-absorbing part is hair
Bubble class foam, such as polyurethanes foam, melamine class foam.
In recent years, increasingly lightening with Wearable electronic product, the volume of sound-producing device module also correspondingly reduces,
Thereafter operatic tunes volume is constantly compressed, so that the volume of filling foam class sound-absorbing part traditional in the inner also accordingly becomes to get over
Come smaller, it is difficult to the resonant frequency F0 of sound-producing device module is dropped to sufficiently low, cannot ensure low in sound-producing device module
Frequency tonequality.
Therefore, it is necessary to provide a kind of new, better sound-absorbing part to replace traditional foaming kind foam.
In the case of miniaturization of electronic products, sound-producing device module is set to reach the requirement of acoustical behavior.
The content of the invention
It is an object of the present invention to provide a kind of new solution of sound-absorbing part.
According to the first aspect of the invention, there is provided a kind of metal organic frame sound-absorbing part, the metal organic frame is inhaled
Sound part includes metal organic frame porous material, and the metal organic frame porous material is matched somebody with somebody by metal ion with organic molecule
Body, forms the porous material with periodic network structure, has micropore and mesoporous in the metal organic frame porous material,
The pore diameter range of the micropore is 0.3-0.8 nanometers, and the mesoporous pore diameter range is 2-40 nanometers, the metal organic frame
The aperture in sound-absorbing part with macropore, the macropore is more than 0.1 micron.
Alternatively, the metal ion at least includes a kind of ion of element in copper, iron, zinc, manganese, indium, cadmium, cobalt.
Alternatively, the smaller ligand at least includes at least one in formic acid, malonic acid, tartaric acid or citric acid.
Alternatively, the metal organic frame sound-absorbing part includes big orifice, and the metal-organic framework material is configured to attached
In big orifice, there is the macropore in the big orifice.
Alternatively, the big orifice is organic high polymer microsphere, and the organic high polymer microsphere has pore passage structure, described
The crystallization of metal organic frame porous material is compounded in the surface and pore passage structure of the polymer microsphere.
Alternatively, the organic high polymer microsphere is made up of GMA polymerization.
Alternatively, the big orifice is foam, and the foam has pore passage structure, the metal organic frame porous material
It is attached on the surface and pore passage structure of organic foam.
Alternatively, the metal organic frame porous material is prepared into sound-absorbing powder, and the sound-absorbing powder passes through bonding agent
With the metal organic frame sound-absorbing part that mould forms predetermined shape, the intergranular gap in the sound-absorbing powder constitutes described big
Hole.
Alternatively, the metal organic frame sound-absorbing part is configured to be painted in the operatic tunes of sound-producing device module
Sound absorbing layer, the metal organic frame porous material is prepared into sound-absorbing powder, and the sound-absorbing powder mixes with bonding agent, and bonding is solid
It is scheduled on the operatic tunes inwall of sound-producing device module, forms sound absorbing layer, the intergranular gap composition of the sound-absorbing powder is described big
Hole.
Alternatively, the aperture local peaking of the micropore at 0.4-0.7 nanometers, the mesoporous aperture local peaking is in 2-
40 nanometers, at 0.1-25 microns, the specific surface of the metal organic frame sound-absorbing part is integrated for the aperture local peaking of the macropore
Cloth scope is 200-900m2/g。
Alternatively, the metal organic frame sound-absorbing part can receive sound in being configured for being arranged on sound-producing device module
The region of sound.
Present invention also offers a kind of sound-producing device module, including module casing and sound-producing device monomer and above-mentioned gold
Category organic frame sound-absorbing part, the sound-producing device monomer and metal organic frame sound-absorbing part are arranged in the module casing.
One of the invention has technical effect that, relative to the metal that traditional foam is provided as sound-absorbing part, the present invention
Organic frame sound-absorbing part has more preferable acoustical behavior improvement.
By referring to the drawings to the detailed description of exemplary embodiment of the invention, further feature of the invention and its
Advantage will be made apparent from.
Brief description of the drawings
The accompanying drawing for being combined in the description and constituting a part for specification shows embodiments of the invention, and even
It is used to explain principle of the invention together with its explanation.
Fig. 1 is the structural representation of the metal organic frame sound-absorbing part that a kind of specific embodiment of the invention is provided；
Fig. 2 is the structural representation of the metal organic frame sound-absorbing part that another kind specific embodiment of the invention is provided；
Fig. 3 is the signal that metal organic frame sound-absorbing part is placed in sound-producing device module in the specific embodiment of the invention
Figure.
Specific embodiment
Describe various exemplary embodiments of the invention in detail now with reference to accompanying drawing.It should be noted that：Unless had in addition
Body illustrates that the part and the positioned opposite of step, numerical expression and numerical value for otherwise illustrating in these embodiments do not limit this
The scope of invention.
The description only actually at least one exemplary embodiment is illustrative below, never as to the present invention
And its any limitation applied or use.
May be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as a part for specification.
In all examples shown here and discussion, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it need not be further discussed in subsequent accompanying drawing.
The invention provides a kind of metal organic frame sound-absorbing part, main performance sound absorption is metal in the sound-absorbing part
Organic frame porous sound absorbing material.The metal organic frame porous sound absorbing material by metal ion and organic micromolecule ligand,
The porous material with periodic network structure formed by self assembling process.Have in the metal organic frame porous material
There is micropore and mesoporous, the pore diameter range of the micropore is between 0.3-0.8 nanometers.It is empty that this micropore primarily serves adsorption and desorption
The effect of qi leel, is that sound absorption is directly played in sound-absorbing part, the structure that acoustic pressure is acted on is absorbed.The mesoporous pore diameter range
Between 2-40 nanometers.It is described it is mesoporous can also play a part of adsorption and desorption air molecule, also, it is described it is mesoporous can also
Air molecule is quickly entered or abjection micropore, play a part of to accelerate air turnover.Due in the rear operatic tunes of sound-producing device
Sound pressure variations it is rapid, thus, it is necessary to enable air molecule quickly to pass in and out the micropore, reaching virtual increases acoustic capacitance
Performance requirement.
For the mode that metal organic frame porous material forms metal organic frame sound-absorbing part, the present invention does not carry out specific
Limitation, optional implementation method can be also included in subsequent content of the invention.Particularly, the metal organic frame sound-absorbing
The aperture also in part with macropore, the macropore is more than 0.1 micron.The effect of the macropore is that raising air turnover metal is organic
The speed of framework sound-absorbing part, enables air molecule quickly to be entered into from the rear operatic tunes inside metal organic frame sound-absorbing part
It is opposite in mesoporous and micropore, air molecule is quickly deviate from.Can take various forms to form described big in the present invention
Hole, the present invention is limited not to this.
Alternatively, the metal ion at least includes a kind of ion of element in copper, iron, zinc, manganese, indium, cadmium, cobalt.It is described
Small molecule organic ligand then can at least include at least one in formic acid, malonic acid, tartaric acid or citric acid.By self assembly
What process was formed forms metal organic framework porous material with periodic network structure.Metal organic frame porous material has
The characteristics of stable material quality, the structural reliability of the sound-absorbing part of formation is higher, and the big I of metal-organic framework materials pore size is led to
The part for crossing selection different length is realized.Alternatively, the present invention not to constitute metal organic frame porous material metal from
Son and carboxylic acid are particularly limited, and are more than enumerated, and also comply with the metal ion of sound-absorbing material performance requirement and organic small
Molecule ligand, falls within variation of the invention.
Alternatively, the metal organic frame sound-absorbing part also includes big orifice, has pore passage structure in the big orifice, this
A little pore passage structures constitute the macropore.The metal organic frame porous material be configured to be attached to the big orifice surface and
In pore passage structure.In this embodiment, the metal organic frame sound-absorbing material can be configured to powder or slurry, make
Metal organic frame porous material can be preferably attached in big orifice.
Further, in a kind of specific embodiment of the invention, the big orifice can be organic high polymer microsphere.
There is pore passage structure in the organic high polymer microsphere, can be as the macropore of metal organic frame sound-absorbing part.It is described organic high
Molecule microballoon can be the crystalline substance base material long of metal organic frame porous material, i.e., organic high polymer microsphere is used as metal organic frame
Porous material crystallization, the base material of growth.The metal organic frame porous material directly forms knot on organic high polymer microsphere
It is brilliant.When the metal organic frame sound-absorbing part is prepared, can be by raw material of metal organic frame porous material and organic high
Molecule microballoon is together placed in crystallization reaction kettle, and so, the crystallization metal organic frame porous material meeting direct growth of synthesis is answered
Close in the surface and pore passage structure of the organic high polymer microsphere.
Alternatively, the organic high polymer microsphere can be made up of GMA polymerization.Certainly, other
Be adapted to crystallization composition metal organic frame porous material high-molecular organic material can also as the organic high polymer microsphere,
The present invention is particularly limited not to this.
In another embodiment of the invention, as shown in figure 1, the described big orifice of metal organic frame sound-absorbing part 1
Can be foam 20, the foamed foaming materials of the foam 20 are formed, and itself have good porous loose structure feature.It is described
The pore passage structure of foam 20 can be as the macropore.The metal organic frame porous material 10 is attached to the foam 20
In surface and pore passage structure.In this embodiment, optional forming method is, by the metal organic frame porous material
10 are configured to sound-absorbing slurry, and the foam 20 is immersed in sound-absorbing slurry afterwards, soak metal organic frame porous material 10
Enter foam 20, be attached in the pore passage structure of foam 20.Afterwards, then dried, dried process, make metal organic frame porous
Sound-absorbing material is consolidated on foam 20, forms the metal organic frame sound-absorbing part 1.
Alternatively, in another embodiment, the metal organic frame sound-absorbing part does not use big orifice, but passes through
The metal organic frame porous material solidification of itself links to form the macropore.The metal organic frame porous material is prepared into
Sound-absorbing powder.By bonding agent and mould, sound-absorbing powder consolidation can be formed predetermined shape, directly constituting metal has machine frame
Frame sound-absorbing part 1.As shown in Fig. 2 for example sound-absorbing powder and bonding agent can be filled with specific mould, be shaped and solidified
Processing, so that composition metal organic frame sound-absorbing part 1 of shaping.Especially, the intergranular gap in the sound-absorbing powder is constituted
The macropore 11.It is controlled by conditions such as bonding agent, consolidation technique, the sizes of sound-absorbing powder particle, can is particle
Between gap meet the macropore 11 condition requirement.Especially, the shape of mould can be with the operatic tunes of sound-producing device module
Structure matches, so that the metal organic frame sound-absorbing part 1 of shaping matches with the structure of the operatic tunes, makes full use of the sky of the operatic tunes
Between.
In another embodiment, above-mentioned big orifice is not used equally, the metal organic frame sound-absorbing part can be straight
Connect the sound absorbing layer for being configured to be formed in the operatic tunes of sound-producing device module.It is similar with above-mentioned implementation method, the metal is had
Machine frame porous material is prepared into sound-absorbing powder, afterwards mixes sound-absorbing powder with bonding agent, and sound-absorbing powder is adhesively fixed on
On the operatic tunes inwall of sound-producing device module, sound absorbing layer is formed.Due to accumulation of the sound-absorbing powder on operatic tunes inwall, sound-absorbing powder
Intergranular gap can constitute the macropore.
Fig. 3 shows the structure that the metal organic frame sound-absorbing part 1 is fixed in the operatic tunes of sound-producing device module.It is described
Sound-producing device module can have module casing 30, have the rear operatic tunes 31 and monomer area 32, sound-producing device monomer in module casing
33 are placed in the monomer area 32.The metal organic frame sound-absorbing part 1 is placed in the rear operatic tunes 31, sound-producing device monomer 33
The sound produced during work can be also passed in the rear operatic tunes 31, metal organic frame sound-absorbing in addition to it can be spread out of from outlet sound mouth
Part 1 can play a part of to absorb sound.
Preferably, in above-mentioned implementation method of the invention, the aperture local peaking of the micropore at 0.4-0.7 nanometers,
At 2-40 nanometers, the aperture local peaking of the macropore is at 0.1-25 microns for the mesoporous aperture local peaking.Preferably, institute
The pore diameter range of macropore is stated between 0.1-25 microns.
Alternatively, the specific surface area distribution of the metal organic frame sound-absorbing part is 200-900m2/g.Preferably,
The distribution of specific surface is 250-550m2/g。
In the range of above-mentioned parameter, the sound-absorbing effect of the metal organic frame sound-absorbing part more preferably, can more effectively drop
The F0 of low sound-producing device module.
Especially, the metal organic frame sound-absorbing part that the present invention is provided can be used for sound-producing device module.The sound-absorbing part sets
The region that sound can be received in sound-producing device module is put, generally can be the rear operatic tunes of module.Certainly, the present invention not
Application to metal organic frame sound-absorbing part carries out concrete restriction, in other embodiments, the metal organic frame sound-absorbing
Part may be also used in the device that other need absorb sound.
The metal organic framework sound-absorbing part that the present invention is provided can substantially reduce sound-producing device module resonant frequency, be better than
Traditional sound-absorbing cotton material.The big I of metal-organic framework material pore size is by selecting different metal ion and organic small
Molecule ligand is regulated and controled.Duct polarity can realize control by being modified part side chain.Because the metal has machine frame
The duct of the easy modulation of frame porous material and duct chemical environment, it is found that the metal organic frame with this kind of hierarchical porous structure is porous
, there is the phenomenon that low frequency sensitivity is improved, resonant frequency F0 is reduced in terms of loudspeaker module acoustical behavior in the sound-absorbing part of material.
On the other hand, the metal organic frame porous material chemical stability is good, high temperature resistant, density are low, high mechanical strength
The advantages of.The life-span of the sound-absorbing part being made effectively extends compared with foam class sound-absorbing part.
Also, metal organic frame sound-absorbing part synthesis technique of the invention is simple, can be according to the acoustical cavity of given shape
Make shaping, yield is higher, to a certain extent can reduces cost, have greatly expanded metal organic frame porous sound absorbing material micro-
Application in type sound-producing device product.
Present invention also offers a kind of sound-producing device module, the sound-producing device module includes module casing, sound-producing device
Monomer and above-mentioned metal organic frame sound-absorbing part.The sound-producing device monomer and metal organic frame sound-absorbing part are arranged on described
In module casing.Sound-producing device monomer is configured to produce sound, and is spread out of from the outlet sound mouth of module casing.The metal is organic
Framework sound-absorbing part is then located at the rear operatic tunes or other positions of module casing, for absorbing the sound in module casing.
Although being described in detail to some specific embodiments of the invention by example, the skill of this area
Art personnel it should be understood that example above is merely to illustrate, rather than in order to limit the scope of the present invention.The skill of this area
Art personnel to above example it should be understood that can modify without departing from the scope and spirit of the present invention.This hair
Bright scope is defined by the following claims.
Claims (12)
1. a kind of metal organic frame sound-absorbing part, it is characterised in that the metal organic frame sound-absorbing part has machine frame including metal
Frame porous material, by metal ion and organic micromolecule ligand, formed has periodically the metal organic frame porous material
The porous material of network structure, has micropore and mesoporous, the aperture model of the micropore in the metal organic frame porous material
It is 0.3-0.8 nanometers to enclose, and the mesoporous pore diameter range is 2-40 nanometers, is had in the metal organic frame sound-absorbing part big
Hole, the aperture of the macropore is more than 0.1 micron.
2. metal organic frame sound-absorbing part according to claim 1, it is characterised in that the metal ion at least includes
A kind of ion of element in copper, iron, zinc, manganese, indium, cadmium, cobalt.
3. metal organic frame sound-absorbing part according to claim 1, it is characterised in that the smaller ligand at least includes
At least one in formic acid, malonic acid, tartaric acid or citric acid.
4. metal organic frame sound-absorbing part according to claim 1, it is characterised in that the metal organic frame sound-absorbing part
Including big orifice, the metal-organic framework material is configured to be attached in big orifice, has the macropore in the big orifice.
5. metal organic frame sound-absorbing part according to claim 4, it is characterised in that the big orifice is organic polymer
Microballoon, the organic high polymer microsphere has pore passage structure, and the metal organic frame porous material crystallization is compounded in the height
In the surface and pore passage structure of molecule microballoon.
6. metal organic frame sound-absorbing part according to claim 5, it is characterised in that the organic high polymer microsphere is by first
The polymerization of base glycidyl acrylate is made.
7. metal organic frame sound-absorbing part according to claim 4, it is characterised in that the big orifice is foam, described
Foam has pore passage structure, and the metal organic frame porous material is attached to surface and the pore passage structure of organic foam
On.
8. metal organic frame sound-absorbing part according to claim 1, it is characterised in that the porous material of metal organic frame
Material is prepared into sound-absorbing powder, and the sound-absorbing powder forms the metal organic frame sound-absorbing of predetermined shape by bonding agent and mould
Part, the intergranular gap in the sound-absorbing powder constitutes the macropore.
9. metal organic frame sound-absorbing part according to claim 1, it is characterised in that the metal organic frame sound-absorbing part
The sound absorbing layer being painted in the operatic tunes of sound-producing device module is configured to, the metal organic frame porous material is prepared into
Sound-absorbing powder, the sound-absorbing powder mixes with bonding agent, is adhesively fixed on the operatic tunes inwall of sound-producing device module, forms sound-absorbing
Layer, the intergranular gap of the sound-absorbing powder constitutes the macropore.
10. metal organic frame sound-absorbing part according to claim 1, it is characterised in that the aperture local peaks of the micropore
, at 0.4-0.7 nanometers, at 2-40 nanometers, the aperture local peaking of the macropore is in 0.1- for the mesoporous aperture local peaking for value
25 microns, the specific surface area distribution of the metal organic frame sound-absorbing part is 200-900m2/g。
11. metal organic frame sound-absorbing parts according to claim 1, it is characterised in that the metal organic frame sound-absorbing
Part is configured for being arranged in sound-producing device module the region that can receive sound.
12. a kind of sound-producing device modules, it is characterised in that including module casing and sound-producing device monomer and claim 1-11
One of any described metal organic frame sound-absorbing part, the sound-producing device monomer and metal organic frame sound-absorbing part are arranged on institute
In stating module casing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710203932.XA CN106875934A (en) | 2017-03-30 | 2017-03-30 | Metal organic frame sound-absorbing part and sound-producing device module |
| PCT/CN2017/090643 WO2018176664A1 (en) | 2017-03-30 | 2017-06-28 | Metal-organic framework sound absorbing member and sound producing device module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710203932.XA CN106875934A (en) | 2017-03-30 | 2017-03-30 | Metal organic frame sound-absorbing part and sound-producing device module |
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| Publication Number | Publication Date |
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| CN106875934A true CN106875934A (en) | 2017-06-20 |
Family
ID=59160397
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| CN201710203932.XA Pending CN106875934A (en) | 2017-03-30 | 2017-03-30 | Metal organic frame sound-absorbing part and sound-producing device module |
Country Status (2)
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| CN (1) | CN106875934A (en) |
| WO (1) | WO2018176664A1 (en) |
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| CN109429137B (en) * | 2017-08-21 | 2021-02-23 | 镇江贝斯特新材料有限公司 | Loudspeaker |
| CN109338816A (en) * | 2018-11-21 | 2019-02-15 | 无锡高强特种纺织有限公司 | A kind of wear-resisting sound-proof wallpaper and preparation method thereof |
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| CN113613778A (en) * | 2018-11-27 | 2021-11-05 | 卡本艾尔有限公司 | Cavity and active region |
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| CN113474081A (en) * | 2018-11-27 | 2021-10-01 | 卡本艾尔有限公司 | Cavity and active region |
| CN113613778B (en) * | 2018-11-27 | 2023-11-24 | 卡本艾尔有限公司 | Cavities and active regions |
| CN109801616A (en) * | 2018-12-31 | 2019-05-24 | 瑞声科技（南京）有限公司 | Sound-absorbing material and loudspeaker enclosure with the sound-absorbing material |
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| CN113903320A (en) * | 2021-09-29 | 2022-01-07 | 瑞声光电科技(常州)有限公司 | Sound absorbing material and loudspeaker using same |
| US20230096193A1 (en) * | 2021-09-29 | 2023-03-30 | Aac Microtech (Changzhou) Co., Ltd. | Sound-absorbing material and speaker using same |
| US11863932B2 (en) * | 2021-09-29 | 2024-01-02 | Aac Microtech (Changzhou) Co., Ltd. | Sound-absorbing material and speaker using same |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018176664A1 (en) | 2018-10-04 |
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Application publication date: 20170620 |