CN108117656A - Vibrating diaphragm for sound-producing device and preparation method thereof - Google Patents
Vibrating diaphragm for sound-producing device and preparation method thereof Download PDFInfo
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- CN108117656A CN108117656A CN201711408646.3A CN201711408646A CN108117656A CN 108117656 A CN108117656 A CN 108117656A CN 201711408646 A CN201711408646 A CN 201711408646A CN 108117656 A CN108117656 A CN 108117656A
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- Prior art keywords
- vibrating diaphragm
- whisker
- crystal whisker
- preparation
- silica gel
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2401/02—Cellulose; Modified cellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2459/00—Characterised by the use of polyacetals containing polyoxymethylene sequences only
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/08—Oxygen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/10—Silicon-containing compounds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The invention discloses a kind of for vibrating diaphragm of sound-producing device and preparation method thereof.The preparation method includes：Crystal whisker materials are added in silica gel, and are uniformly mixed；Mixed material is molded, to form vibrating diaphragm.The preparation method can significantly improve the performances such as hardness, elasticity modulus, tensile strength, heat resistance, the resistance to ag(e)ing of vibrating diaphragm after shaping by adding in whisker into silica gel.In addition, the addition by changing whisker, can adjust the hardness of the vibrating diaphragm after shaping, so as to adapt to requirement of the different sound-producing devices for acoustical behavior, and improve audition performance.
Description
Technical field
The present invention relates to technical field of material, more particularly, to a kind of vibrating diaphragm and its system for sound-producing device
Preparation Method.
Background technology
In the prior art, silica gel vibrating diaphragm is by injection sulfidization molding by silica gel.Silica gel is usually in a liquid state.Silica gel shakes
Film is thermosets, has the characteristics that temperature tolerance is good and vibrating diaphragm caliper uniformity is good, can be obviously improved the sound of vibrating diaphragm
Learn performance.
However, the hardness of this silica gel vibrating diaphragm is single, it is impossible to according to the hardness of different acoustic performance requirements adjustment vibrating diaphragms.
In addition, the damping capacity of this silica gel vibrating diaphragm is poor, be unsatisfactory for product to the high-damping of vibrating diaphragm, high audition performance will
It asks.
The content of the invention
It is an object of the present invention to provide a kind of new solutions of the vibrating diaphragm for sound-producing device.
According to the first aspect of the invention, a kind of preparation method of the vibrating diaphragm for sound-producing device is provided.The preparation side
Method includes：Crystal whisker materials are added in silica gel, and are uniformly mixed；Mixed material is molded, to form vibrating diaphragm.
Optionally, the crystal whisker materials include at least one of inorganic crystal whisker and organic crystalline palpus.
Optionally, the crystal whisker materials include inorganic crystal whisker under conditions of, the inorganic crystal whisker include silicon carbide whisker,
In ZnOw, potassium titanate crystal whisker, aluminium borate whisker, alkali magnesium sulfate crystal whisker, calcium sulfate crystal whiskers and calcium carbonate crystal whisker extremely
Few one kind.
Optionally, under conditions of the crystal whisker materials include organic whisker, the organic crystalline must include native cellulose
At least one of whisker, polyformaldehyde whisker and polyester whisker.
Optionally, the ratio between the crystal whisker materials and mass fraction of the silica gel are：0:100-25:100.
Optionally, it is compatible between the crystal whisker materials and the silica gel for improving to further include the addition into the silica gel
The coupling agent of property.
Optionally, crystal whisker materials are added in silica gel described, and before uniformly mixed step, further including will be described
Coupling agent is mixed with the crystal whisker materials, and processing is modified with the surface to the crystal whisker materials.
Optionally, the coupling agent includes at least one in silane coupling agent, titanate coupling agent and stearic acid coupling agent
Kind.
Optionally, the ratio between the coupling agent and mass fraction of the silica gel are：0.1:100-3:100.
According to another aspect of the present invention, a kind of vibrating diaphragm for sound-producing device is provided.The vibrating diaphragm is according to the present invention
The preparation method provided is prepared.
According to one embodiment of the disclosure, which can be significantly improved by adding in whisker into silica gel
The performances such as hardness, elasticity modulus, tensile strength, heat resistance, the resistance to ag(e)ing of the vibrating diaphragm after type.
In addition, the addition by changing whisker, the hardness of the vibrating diaphragm after shaping can be adjusted, so as to adapt to different sounding
Requirement of the device for acoustical behavior, and improve audition performance.In the silica gel of Unit Weight, whisker addition is bigger, then
The hardness of vibrating diaphragm is higher；Conversely, then the hardness of vibrating diaphragm is lower.
In addition, by adjusting the hardness of vibrating diaphragm, the F of vibrating diaphragm can be adjusted0(resonant frequency) reduces the non-linear mistake of vibrating diaphragm
Very, the generation of vibrating diaphragm rupture of membranes phenomenon is reduced.
Further, since the damping capacity of vibrating diaphragm improves, therefore the noise of sound-producing device can be reduced.Since the hardness of vibrating diaphragm carries
Height, therefore the diaphagras of vibrating diaphragm can be significantly reduced, so as to reduce noise.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Description of the drawings
It is combined in the description and the attached drawing of a part for constitution instruction shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is the flow chart of the preparation method of the vibrating diaphragm according to an embodiment of the invention for sound-producing device.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that：Unless in addition have
Body illustrates that the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The scope of invention.
It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to the present invention
And its application or any restrictions that use.
It 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 part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely illustrative, 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 attached drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent attached drawing in a attached drawing.
Fig. 1 is the flow chart of the preparation method of the vibrating diaphragm according to an embodiment of the invention for sound-producing device.
As shown in Figure 1, the preparation method, including：
S1, crystal whisker materials are added in silica gel, and be uniformly mixed.
Wherein, crystal whisker materials are the staple fibers of the micro/nano level formed by high-purity crystal growth.The machinery of crystal whisker materials
Intensity is equal to the intensity that adjacent interatomic force generates.The height-oriented structure of crystal whisker materials makes it have high intensity, high-modulus, and
And the characteristics of heat resistance, wearability, damping performance, good damping capacity.Silica gel is the common used material of this field.In normal temperature and pressure
It is usually liquid down.Silica gel is thermosets, can make its curing by heating.
S2, mixed material is molded, to form vibrating diaphragm.
Specifically, in one example, vibrating diaphragm is formed by way of injection molding.Material gradually cures, and forms tool
There is the vibrating diaphragm of setting structure.
Certainly, those skilled in the art can select molding mode according to actual needs, not limit herein.Such as it flows
The molding modes such as prolong, print.
In embodiments of the present invention, by adding in whisker into silica gel, can significantly improve shaping after vibrating diaphragm hardness,
The performances such as elasticity modulus, tensile strength, heat resistance, resistance to ag(e)ing.
In addition, the addition by changing whisker, the hardness of the vibrating diaphragm after shaping can be adjusted, so as to adapt to different sounding
Requirement of the device for acoustical behavior, and improve audition performance.In the silica gel of Unit Weight, whisker addition is bigger, then
The hardness of vibrating diaphragm is higher；Conversely, then the hardness of vibrating diaphragm is lower.
In addition, by adjusting the hardness of vibrating diaphragm, the F of vibrating diaphragm can be adjusted0(resonant frequency) reduces the non-linear mistake of vibrating diaphragm
Very, the generation of vibrating diaphragm rupture of membranes phenomenon is reduced.
Further, since the damping capacity of vibrating diaphragm improves, therefore the noise of sound-producing device can be reduced.Due to the hardness of vibrating diaphragm, resist
The raising of tensile strength, therefore the diaphagras of vibrating diaphragm can be significantly reduced, so as to reduce noise, and extend the use longevity of vibrating diaphragm
Life.
In one example, crystal whisker materials include at least one of inorganic crystal whisker and organic crystalline palpus.Inorganic crystal whisker is by nothing
Machine material preparation forms.Organic crystalline must be prepared by organic material.Both whiskers derive from a wealth of sources, and can effectively improve
The hardness and damping capacity of vibrating diaphragm after shaping.
In one example, under conditions of crystal whisker materials include inorganic crystal whisker, optionally, inorganic crystal whisker includes carborundum
In whisker, ZnOw, potassium titanate crystal whisker, aluminium borate whisker, alkali magnesium sulfate crystal whisker, calcium sulfate crystal whiskers and calcium carbonate crystal whisker
At least one.The compatibility of above-mentioned crystal whisker materials and silica gel is good.Crystal whisker materials have good stability, and can significantly improve
The comprehensive performances such as the hardness of the vibrating diaphragm after shaping and damping capacity.Those skilled in the art can be selected in above-mentioned inorganic crystal whisker
Any one is modified silica gel, and a variety of mixtures in above-mentioned inorganic crystal whisker can also be selected to be modified silica gel.
In one example, under conditions of crystal whisker materials include organic whisker, it is brilliant that organic crystalline must include native cellulose
At least one of palpus, polyformaldehyde whisker and polyester whisker.The compatibility of above-mentioned crystal whisker materials and silica gel is good.Crystal whisker materials
It has good stability, and the comprehensive performances such as hardness and damping capacity that can significantly improve the vibrating diaphragm after shaping.People in the art
Member can select in above-mentioned organic crystalline palpus any one silica gel is modified, can also select more in above-mentioned organic crystalline palpus
The mixture of kind is modified silica gel.
The additive amount of whisker is bigger, then the hardness of the vibrating diaphragm after being molded is bigger, but additive amount crosses the tough of conference influence vibrating diaphragm
Property.
In one example, the ratio between mass fraction of crystal whisker materials and silica gel is：0:100-25:100.In the proportion
Interior, crystal whisker materials can significantly improve the hardness and damping capacity of the vibrating diaphragm after shaping, and will not reduce the toughness of vibrating diaphragm, make to shake
Film has good elasticity.
In one example, further include and the idol for improving the compatibility between crystal whisker materials and silica gel is added into silica gel
Join agent.
Wherein, coupling agent has close silica gel group and close crystal whisker materials group, can make the combination of silica gel and crystal whisker materials
Power higher, so that silica gel can be preferably compatible with crystal whisker materials.Since compatibility improves, therefore after shaping can be further improved
The comprehensive performances such as the hardness of vibrating diaphragm and damping capacity.
In one example, it is added to by crystal whisker materials in silica gel, and before uniformly mixed step, further includes idol
Connection agent is mixed with crystal whisker materials, and processing is modified with the surface to crystal whisker materials.Coupling agent can be made by modification
Close crystal whisker materials group is more effectively combined with crystal whisker materials.Then, crystal whisker materials and coupling agent are added together in silica gel.
The close crystal whisker materials group of coupling agent can be combined together with silica gel.
Compared with the method that directly coupling agent and crystal whisker materials are added in silica gel, this mode causes coupling agent and crystalline substance
Whisker material can be combined more fully, so that the combination power between crystal whisker materials and silica gel can be stronger, compatibility is more preferable.
In other examples, crystal whisker materials can be added into silica gel first, then add coupling agent, and are carried out fully mixed
It closes；Alternatively, adding coupling agent into silica gel first, then crystal whisker materials are added, and be sufficiently mixed, alternatively, same in item silica gel
Shi Tianjia coupling agents and crystal whisker materials, and be sufficiently mixed.Without first crystal whisker materials are modified with processing with coupling agent.
In this way, it can equally improve the compatibility of coupling agent and crystal whisker materials.
In one example, crystal whisker materials, coupling agent and silica gel are kneaded using rheometer.Specifically, whisker material
Material, coupling agent and silica gel are added in rheometer are kneaded according to set proportion.When the torque of rheometer is steady, explanation
Three kinds of materials are by evenly mixing.Next, vibrating diaphragm is made by way of injection molding.Rheometer can improve three kinds of materials
Mixing velocity, improve uniformity of mixture.
Can also be that crystal whisker materials, coupling agent and silica gel are directly appended to mixer or mixing according to set proportion
It is mixed in device, as long as can be uniformly mixed.Next, vibrating diaphragm is formed by way of injection molding.
In one example, coupling agent is included in silane coupling agent, titanate coupling agent and stearic acid coupling agent at least
It is a kind of.Above-mentioned material derives from a wealth of sources, and coupling effect is excellent.Those skilled in the art can be selected in above-mentioned coupling agent
Any one is added, and a variety of mixtures in above-mentioned coupling agent can also be selected to be added.
In one example, the ratio between mass fraction of coupling agent and silica gel is：0.1:100-3:100.In the proportion
Interior, the vibrating diaphragm after shaping has higher hardness and damping capacity, while the toughness of vibrating diaphragm will not be adversely affected again.
Those skilled in the art can select coupling agent, the species of crystal whisker materials and additive amount according to actual needs.
In other examples, in order to improve the comprehensive performance of vibrating diaphragm, can also be kneaded when add in plasticizer, bulking agent,
The auxiliary agents such as heat stabilizer, light stabilizer, lubricant, fire retardant.Those skilled in the art can select ability according to actual needs
The common auxiliary agent in domain and dosage.
According to another embodiment of the invention, a kind of vibrating diaphragm for sound-producing device is provided.The vibrating diaphragm is according to this hair
The preparation method of bright offer is prepared.The vibrating diaphragm can be single-layer membrane structure or be formed by multiple film layers compound
Vibrating diaphragm.
The vibrating diaphragm has the characteristics of hardness is high, and damping capacity is excellent.
In addition, the noise of the vibrating diaphragm is small, hearing effect is good, and service life is long.
Although some specific embodiments of the present invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to illustrating, the scope being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above example.This hair
Bright scope is defined by the following claims.
Claims (10)
1. a kind of preparation method of vibrating diaphragm for sound-producing device, which is characterized in that including：
Crystal whisker materials are added in silica gel, and are uniformly mixed；
Mixed material is molded, to form vibrating diaphragm.
2. the preparation method of vibrating diaphragm according to claim 1, which is characterized in that the crystal whisker materials include inorganic crystal whisker and have
At least one of machine whisker.
3. the preparation method of vibrating diaphragm according to claim 2, which is characterized in that include inorganic crystal whisker in the crystal whisker materials
Under the conditions of, the inorganic crystal whisker includes silicon carbide whisker, ZnOw, potassium titanate crystal whisker, aluminium borate whisker, alkali magnesium sulfate
At least one of whisker, calcium sulfate crystal whiskers and calcium carbonate crystal whisker.
4. the preparation method of vibrating diaphragm according to claim 2, which is characterized in that include organic whisker in the crystal whisker materials
Under the conditions of, the organic crystalline must include at least one of native cellulose whisker, polyformaldehyde whisker and polyester whisker.
5. the preparation method of vibrating diaphragm according to claim 1, which is characterized in that the quality of the crystal whisker materials and the silica gel
The ratio between number is：0:100-25:100.
6. the preparation method of vibrating diaphragm described in any one in claim 1-5, which is characterized in that further include to the silicon
It adds to improve the coupling agent of the compatibility between the crystal whisker materials and the silica gel in glue.
7. the preparation method of vibrating diaphragm according to claim 6, which is characterized in that crystal whisker materials are added to silica gel described
In, and before uniformly mixed step, further include and mix the coupling agent with the crystal whisker materials, with to the crystal whisker materials
Surface be modified processing.
8. the preparation method of vibrating diaphragm according to claim 6, which is characterized in that the coupling agent includes silane coupling agent, titanium
At least one of acid esters coupling agent and stearic acid coupling agent.
9. the preparation method of vibrating diaphragm according to claim 6, which is characterized in that the mass parts of the coupling agent and the silica gel
It is the ratio between several to be：0.1:100-3:100.
10. a kind of vibrating diaphragm for sound-producing device, which is characterized in that according to as described in any one in claim 1-9
Preparation method is prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711408646.3A CN108117656A (en) | 2017-12-22 | 2017-12-22 | Vibrating diaphragm for sound-producing device and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711408646.3A CN108117656A (en) | 2017-12-22 | 2017-12-22 | Vibrating diaphragm for sound-producing device and preparation method thereof |
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| Publication Number | Publication Date |
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| CN108117656A true CN108117656A (en) | 2018-06-05 |
Family
ID=62231357
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711408646.3A Pending CN108117656A (en) | 2017-12-22 | 2017-12-22 | Vibrating diaphragm for sound-producing device and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109266003A (en) * | 2018-08-31 | 2019-01-25 | 歌尔股份有限公司 | The preparation method and sounding device of vibrating diaphragm |
| CN109266005A (en) * | 2018-08-31 | 2019-01-25 | 歌尔股份有限公司 | A kind of preparation method and sounding device of vibrating diaphragm |
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| CN107277712A (en) * | 2017-07-06 | 2017-10-20 | 奥音科技（北京）有限公司 | Forming method, silica gel vibrating diaphragm and the sound-producing device of silica gel vibrating diaphragm |
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2017
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| CN107277712A (en) * | 2017-07-06 | 2017-10-20 | 奥音科技（北京）有限公司 | Forming method, silica gel vibrating diaphragm and the sound-producing device of silica gel vibrating diaphragm |
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|---|---|---|---|---|
| CN109266003A (en) * | 2018-08-31 | 2019-01-25 | 歌尔股份有限公司 | The preparation method and sounding device of vibrating diaphragm |
| CN109266005A (en) * | 2018-08-31 | 2019-01-25 | 歌尔股份有限公司 | A kind of preparation method and sounding device of vibrating diaphragm |
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