CN108574923A - A kind of preparation method of silicon-carbon vibrating diaphragm, carbonaceous vibrating diaphragm and the acoustic elements equipped with the vibrating diaphragm - Google Patents
A kind of preparation method of silicon-carbon vibrating diaphragm, carbonaceous vibrating diaphragm and the acoustic elements equipped with the vibrating diaphragm Download PDFInfo
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- CN108574923A CN108574923A CN201810402162.6A CN201810402162A CN108574923A CN 108574923 A CN108574923 A CN 108574923A CN 201810402162 A CN201810402162 A CN 201810402162A CN 108574923 A CN108574923 A CN 108574923A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
- H04R2231/001—Moulding aspects of diaphragm or surround
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- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The present invention relates to electro-acoustic product technical fields, more particularly to a kind of silicon-carbon vibrating diaphragm, the preparation method of silicon-carbon vibrating diaphragm and equipped with the acoustic elements of the vibrating diaphragm, including：Prepare carbonaceous vibrating diaphragm；The silica gel vibrating diaphragm prepared is provided；The carbonaceous vibrating diaphragm and the silica gel vibrating diaphragm are closely joined together by post forming mode；By preparing silicon-carbon vibrating diaphragm, the silicon-carbon vibrating diaphragm of preparation has light, range is wide, elastic and rigidity is good, and high temperature resistant, endurance, the advantages that small is influenced by external environments such as moisture, a kind of novel silicon-carbon vibrating diaphragm is made in silica gel vibrating diaphragm and carbonaceous vibrating diaphragm by the way of post forming, so as to be conveniently mounted in the acoustic elements of electrical loudspeaker, also it can be directly integrally formed with the acoustic elements of electrical loudspeaker, compared to traditional technical solution or pure carbonaceous vibrating diaphragm or pure silicon glue vibrating diaphragm, with higher sensitivity and identification, technological operation is simple, it is convenient to be molded, it can realize extensive preparation.
Description
【Technical field】
The present invention relates to electro-acoustic product technical fields, more particularly to a kind of preparation method of silicon-carbon vibrating diaphragm, silicon-carbon vibrating diaphragm
And the acoustic elements equipped with the vibrating diaphragm.
【Background technology】
As the important composition component of loud speaker, vibrating diaphragm is one and changes very sensitive element for electromagnetic field, works as telecommunications
When number passing through coil, magnetic field generates variation, leads to vibrating diaphragm stress deformation.Quickly due to change in electric, lead to vibrating diaphragm height
Speed vibration, then air is passed to by vibration of membrane of shaking, to produce sound wave.In this process, the acoustical behavior of vibrating diaphragm
Determine the overall performance of earphone or loud speaker.The type of vibrating diaphragm has very much, there is papery vibrating diaphragm, wooden vibrating diaphragm, plastics vibrating diaphragm, gold
Belong to vibrating diaphragm, biological vibrating diaphragm etc..Carbon material is considered as a kind of acoustic diaphragm material haveing excellent performance.This material is by verification
Really there are some very excellent characteristics.On acoustic response curve it is apparent it is excellent in aluminium vibrating diaphragm, titanium vibrating diaphragm these simple apply
The vibrating diaphragm technology of layer, while being also advantageous over multilayer vibrating diaphragm technology.
In the prior art, the method by bonding one layer of aluminium film on plastics vibrating diaphragm improves the rigid of vibrating diaphragm to realize
The purpose of property and high frequency stability.But since its primer is still using plastic film, and the weight of film is also simultaneously
Do not mitigate, thus it is limited to the improvement space of sound quality, especially in large-scale frequency band, high range, it is easy to cause cohesive
Amorphous carbon layer shatters distortion greatly, it is difficult to really restore primary sound.
Inventor has found in the implementation of the present invention：Existing aluminium vibrating diaphragm weight is bigger, and inertia is not small, rigidity
Deficiency, there is still a need for improve the audio performance shown.
【Invention content】
One purpose of the embodiment of the present invention is to provide a kind of preparation method of silicon-carbon vibrating diaphragm, silicon-carbon vibrating diaphragm and shakes equipped with this
The acoustic elements of film, it is intended to solve the bad technical problem of audio performance that existing aluminium vibrating diaphragm is showed.
In order to solve the above-mentioned technical problem, the embodiment of the present invention provides following technical scheme：
In a first aspect, the embodiment of the present invention provides a kind of preparation method of silicon-carbon vibrating diaphragm, the preparation method includes：System
Standby carbonaceous vibrating diaphragm；The silica gel vibrating diaphragm prepared is provided；The carbonaceous vibrating diaphragm and the silica gel vibrating diaphragm are passed through into post forming
Mode is closely joined together.
Preferably, the preparation carbonaceous vibrating diaphragm specifically includes：A kind of presoma resin, film are provided；
The presoma resin is uniformly coated on the film containing releasing agent；On coated presoma resin
One layer of film containing releasing agent is covered again；Under predetermined temperature and predetermined pressure, sizing obtains presoma resin film；It will be described
Presoma resin film cuts into the diaphragm of predetermined shape by machinery；By the diaphragm in inert gas shielding environment, pre-
Under constant-pressure, temperature-gradient method obtains the carbonaceous vibrating diaphragm of hole even compact to 1000 DEG C or more carbonizations.
Preferably, the presoma resin is phenolic resin, polyurethane resin, furane resins, silicones, and unsaturation is poly-
Ester, alkalescent phenol resin, the composition of one or more of epoxy resin.
Preferably, the presoma resin is siliceous resin composite body, and wherein silicone content is 0.01%-100%.
Preferably, the presoma thick resin film is 0.01-2mm.
Preferably, the inert gas is one kind in nitrogen, argon gas, helium and carbon dioxide.
Preferably, the predetermined temperature is 70-250 DEG C.
Preferably, the post forming mode uses laser, plasma or ultrasonic power.
In second aspect, the embodiment of the present invention provides a kind of silicon-carbon vibrating diaphragm, and the silicon-carbon vibrating diaphragm is appointed by the claims
Preparation method described in one is made.
In the third aspect, the embodiment of the present invention provides a kind of acoustic elements, and the acoustic elements include silicon as described above
Carbon vibrating diaphragm.
Compared with prior art, advantage is the embodiment of the present invention：By the way that silica gel vibrating diaphragm and carbonaceous vibrating diaphragm are used
A kind of novel silicon-carbon vibrating diaphragm is made in the mode of post forming, so as to be conveniently mounted in the acoustic elements of electrical loudspeaker,
Also it can be directly integrally formed with the acoustic elements of electrical loudspeaker, compared to traditional technical solution or pure carbonaceous vibrating diaphragm or pure
Silica gel vibrating diaphragm has higher sensitivity and identification, technological operation simple, and molding is convenient, can realize extensive preparation, together
When, the novel silicon-carbon vibrating diaphragm of preparation itself has light, and range is wide, elastic and rigidity preferably, and high temperature resistant, endurance, by water
The advantages that influence for external environment of grading is small.
【Description of the drawings】
Fig. 1 is a kind of structural schematic diagram of silicon-carbon vibrating diaphragm provided in an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of loud speaker acoustic elements provided in an embodiment of the present invention；
Fig. 3 is a kind of scanning electron microscope (SEM) photograph of silicon-carbon vibrating diaphragm pore structure provided in an embodiment of the present invention；
Fig. 4 is a kind of flow diagram of the preparation method of silicon-carbon vibrating diaphragm provided in an embodiment of the present invention.
In figure：100, silicon-carbon vibrating diaphragm；10, hole；200, acoustic elements；20, acoustic elements ontology.
【Specific implementation mode】
In order to make the purpose of the present invention, scheme and advantage be more clearly understood, with reference to the accompanying drawings and embodiments, to this hair
It is bright to be further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to
Limit the present invention.In addition, as long as technical characteristic involved in invention described below different embodiments is each other
Not constituting conflict can be combined with each other.
Fig. 1 is a kind of structural schematic diagram of silicon-carbon vibrating diaphragm provided in an embodiment of the present invention；As shown in Figure 1, the silicon-carbon vibrating diaphragm
100 are equipped with several holes 10, and hole 10 is uniformly distributed in entire 100 material of silicon-carbon vibrating diaphragm, 100 material of silicon-carbon vibrating diaphragm
Porosity is more than 70%；The aperture of above-mentioned hole 10 is 1-100 μm, and preferably the aperture of hole 10 is 1-10 μm.
Fig. 2 is a kind of structural schematic diagram of loud speaker acoustic elements provided in an embodiment of the present invention；As shown in Fig. 2, acoustics
Unit 200 includes above-mentioned silicon-carbon vibrating diaphragm 100 and acoustics cell body 20, and silicon-carbon vibrating diaphragm 100 is directly connected in acoustic elements ontology
On 20, have the advantages that sensitivity and identification are high.
Silicon-carbon vibrating diaphragm includes the upper and lower in the embodiment of the present invention, and upper layer is carbonaceous vibrating diaphragm, and lower layer is silica gel vibrating diaphragm, carbon
Matter vibrating diaphragm and silica gel vibrating diaphragm all have preferable high temperature resistance, by the way that upper layer carbonaceous vibrating diaphragm and lower layer silica gel vibrating diaphragm is compound
Sensitivity and the high NEW TYPE OF COMPOSITE silico-carbo diaphragm materials of identification, as silicon-carbon vibrating diaphragm are had both to a kind of.
Fig. 3 is the scanning electron microscope (SEM) photograph of silicon-carbon vibrating diaphragm pore structure.
Silicon-carbon vibrating diaphragm provided in this embodiment can also use fairly simple technique to realize extensive preparation, have relatively low
Production and application cost.Fig. 4 is a kind of flow diagram of the preparation method of silicon-carbon vibrating diaphragm provided in an embodiment of the present invention.
As shown in figure 4, the preparation method of the silicon-carbon vibrating diaphragm includes the following steps：
S1：Prepare carbonaceous vibrating diaphragm；
The preparation carbonaceous vibrating diaphragm specifically includes：A kind of presoma resin, film are provided.
It is phenolic resin, polyurethane resin, furan that the presoma resin, which has scheduled concentration and viscosity, presoma resin,
Furane resins, silicones, unsaturated polyester (UP), alkalescent phenol resin, epoxy resin a combination of one or more object.
The presoma resin is a kind of siliceous resin composite body, and the resin composite body is silicones, Ludox, silicon
One kind of gel, silica gel, silane, silicon powder, wherein silicone content are 0.01%-100%, and preferably silicone content is in the present embodiment
10-50%.
The film is polyethylene, makrolon, polyethylene terephthalate, polystyrene, polyether-ether-ketone, polyamides
One kind in imines, liquid crystal polymer, polyphenylene sulfide being coated with releasing agent on the film in the present embodiment.
The presoma resin is uniformly coated on the film containing releasing agent.
The presoma resin is uniformly coated on by serialization film-forming apparatus on the film containing releasing agent.Institute
It states continuous film forming equipment and uses casting roller film device.
By the film for being loaded with presoma resin by there is the channel of predetermined temperature, speed and temperature of the film by channel are controlled
Degree covers the film containing releasing agent after predetermined temperature is handled on coated presoma resin.
It is understood that the control speed and temperature of the film by channel, wherein channel speed 0.01-
100m/min；Preferred channel speed is 1-60m/min in the present embodiment；Channel temperature is 50-180 DEG C in the present embodiment, this reality
It is 60-120 DEG C to apply the preferred channel temperature of example.
The channel is metal box or metal box.
Presoma resin film is obtained after predetermined temperature and pressure shaping.
It is understood that above-mentioned predetermined temperature is 70-250 DEG C, the preferred predetermined temperature of the present embodiment is 120-200 DEG C；
Predetermined pressure is 0.01MPa or more, and preferably predetermined pressure is 14-16MPa in the present embodiment.
Presoma thick resin film is 0.01-2mm in the present embodiment, and preferably presoma thick resin film is 0.03-1mm.
The presoma resin film is cut into the diaphragm of predetermined shape by machinery.
Above-mentioned diaphragm can be round, rectangular or oval, it is to be understood that the shape of diaphragm can be according to using ring
Border is arbitrarily set.
By the diaphragm in inert gas shielding environment, under predetermined pressure, temperature-gradient method is carbonized to 1000 DEG C or more
To the carbonaceous diaphragm materials for having hole even compact.
Above-mentioned inert gas is one kind in nitrogen, argon gas, helium, carbon dioxide；Above-mentioned predetermined pressure can be understood as
At the pressure applied on presoma resin film during carbon, predetermined pressure is 0.1MPa or more, preferably pre- level pressure in the present embodiment
Power is 0.4-1.5MPa.
Above-mentioned temperature-gradient method is to 1000 DEG C or more, it can be understood as at the heating rate and carburizing temperature during carbon,
In, heating rate is 0.01-20 DEG C/min, and preferably heating rate is 0.1-10 DEG C/min；Wherein, carburizing temperature 500-1400
DEG C, preferred carburizing temperature is 700-1200 DEG C in the present embodiment.
Carbonaceous vibrating diaphragm is the structural porous material of the mixed type crystal carbon of siliceous element in the present embodiment.
S2：The silica gel vibrating diaphragm prepared is provided.
The silica gel vibrating diaphragm specifically includes molded pellosil, and the pellosil is introduced into moulding press in a continuous manner
Die cavity in, so that pellosil is kept smooth in die cavity；
Molding controls mould temperature；
Molding pressure is adjusted, and pressurize is for a period of time；
Molding is taken out, and silica gel vibrating diaphragm is prepared.
Above-mentioned mould temperature temperature range is 70-200 DEG C, and preferably mould temperature temperature is 150-180 DEG C；The molding pressure is
0.01MPa or more, preferably molding pressure are 20-21MPa；The dwell time is less than 20 minutes, preferred pressurize in the present embodiment
Time is 1-2 minutes.
S3：The silicon-carbon plasma membrane and the silica gel vibrating diaphragm are closely joined together by post forming mode.
The post forming mode is the methods of laser, plasma or ultrasound.
On the one hand, silicon-carbon vibrating diaphragm based on the embodiment of the present invention is used for the acoustic elements of electrical loudspeaker, has matter
Gently, elasticity is good, and rigidity is big, is unlikely to deform, and heat-resisting quantity is good, the high advantage of high frequency stability；On the other hand, by silica gel vibrating diaphragm with
A kind of novel silicon-carbon vibrating diaphragm is made in carbonaceous vibrating diaphragm by the way of post forming, so as to be conveniently mounted at electrical loudspeaker
It in acoustic elements, also can be directly integrally formed with the acoustic elements of electrical loudspeaker, compared to traditional technical solution or pure
Carbonaceous vibrating diaphragm has higher sensitivity and identification, technological operation simple, and molding is convenient, can realize extensive preparation.
Below in conjunction with several specific embodiments, be described in detail silicon-carbon vibrating diaphragm provided in an embodiment of the present invention preparation process and
Performance.
Embodiment 1：
Silane is uniformly mixed with polyurethane resin to obtain presoma resin, particularly, control silicone content is 14%.It will gather
Urethane presoma resin is uniformly coated on the poly terephthalic acid second containing releasing agent by the equipment of a succession of casting roller film
On the film of diol ester, thickness of the control polyurethane presoma resin on film is 0.05mm.Then before polyurethane being loaded with
Drive body resin control film by the metal box containing hot-air, particularly, control hot air temperature be 75 DEG C, before film
It is 5m/min into speed.After predetermined temperature is handled, poly- pair on coated presoma resin on lid containing releasing agent
Ethylene terephthalate film.It shapes under 150 DEG C, the pressure of 21MPa, obtains presoma resin film.Presoma resin
Film mechanically cuts into the diaphragm of predetermined shape.
By the aforementioned diaphragm for cutting into predetermined shape in helium atmosphere protection, it is loaded into 0.6MPa, with the speed of 3 DEG C/min
Degree is warming up to 1000 DEG C of carbonizations, and carbonization obtains the structural porous structure of the mixed type crystal carbon of the siliceous element of hole even compact
Material, wherein 4 μm of aperture, porosity 78%.
The present embodiment provides a kind of preparation methods of silica gel vibrating diaphragm, including：Molded pellosil is provided；
The pellosil is introduced into the die cavity of moulding press in a continuous manner, pellosil is made to keep smooth in die cavity；
Molding, 155 DEG C of control mould temperature, adjusting molding pressure is 20MPa, and pressurize 2min, molding are taken out, and silica gel is prepared
Vibrating diaphragm.
By the way of ultrasonic post forming, silica gel is shaken with carbonaceous vibrating diaphragm for the silica gel vibrating diaphragm that preceding method is prepared
Film is securely bonded together with carbonaceous vibrating diaphragm, and one kind is made and has both that sensitivity and identification are high, range is wide, elastic, lightweight, just
The high novel silicon-carbon vibrating diaphragm of property, temperature in use.
Embodiment 2
Silica hydrogel is uniformly mixed with phenolic resin to obtain presoma resin by predetermined ratio, particularly, controls silicone content
It is 11%.By phenolic resin by the equipment containing a succession of casting roller film, it is uniformly coated on poly- to benzene containing releasing agent
On naphthalate film, thickness of the control polyurethane presoma resin on film is 0.08mm.Then phenol will be loaded with
Urea formaldehyde presoma resin control film by the metal box containing hot-air, particularly, control hot air temperature be 90
DEG C, film forward speed is 7m/min.After predetermined temperature is handled, contain demoulding on lid on coated presoma resin
The pet film of agent.It shapes under 157 DEG C, the pressure of 15.5MPa, obtains presoma resin film.
Presoma resin film mechanically cuts into the diaphragm of predetermined shape.
By the aforementioned diaphragm for cutting into predetermined shape in helium atmosphere protection, it is loaded into 0.7MPa, with the speed of 2 DEG C/min
Degree is warming up to 1100 DEG C of carbonizations, and carbonization obtains the structural porous structure of the mixed type crystal carbon of the siliceous element of hole even compact
Material, wherein 3 μm of aperture, porosity 76%.
A kind of aforementioned preparation method of silica gel vibrating diaphragm of offer, including：Molded pellosil is provided；
The pellosil is introduced into the die cavity of moulding press in a continuous manner, pellosil is made to keep smooth in die cavity；
Molding, 160 DEG C of control mould temperature, adjusting molding pressure is 20MPa, and pressurize 1min, molding are taken out, and silica gel is prepared
Vibrating diaphragm.
By the way of ultrasonic post forming, silica gel is shaken with carbonaceous vibrating diaphragm for the silica gel vibrating diaphragm that preceding method is prepared
Film is securely bonded together with carbonaceous vibrating diaphragm, and one kind is made and has both that sensitivity and identification are high, range is wide, elastic, lightweight, just
The high novel silicon-carbon vibrating diaphragm of property, temperature in use.
Embodiment 3
Silicon powder is uniformly mixed with furane resins to obtain presoma resin by predetermined ratio, particularly, controls silicone content
It is 21%.By furane resins presoma resin by the equipment containing a succession of casting roller film, it is uniformly coated on containing demoulding
On the polystyrene film of agent, thickness of the control furane resins presoma resin on film is 0.1mm.Then furans will be loaded with
Resin precursor resin control film by the metal box containing hot-air, particularly, control hot air temperature be 86 DEG C,
Film forward speed is 10m/min.After predetermined temperature is handled, contain releasing agent on lid on coated presoma resin
Polystyrene film.It shapes under 150 DEG C, the pressure of 15MPa, obtains presoma resin film.Presoma resin film is passed through
Mechanical system cuts into the diaphragm of predetermined shape.
By the aforementioned diaphragm for cutting into predetermined shape in helium atmosphere protection, it is loaded into 0.6MPa, with the speed of 5 DEG C/min
Degree is warming up to 500 DEG C of carbonizations, and carbonization obtains the structural porous structure of the mixed type crystal carbon of the siliceous element of hole even compact
Material, wherein 2 μm of aperture, porosity 83%.
A kind of preparation method of silica gel vibrating diaphragm is provided, including：Molded pellosil is provided；
The pellosil is introduced into the die cavity of moulding press in a continuous manner, pellosil is made to keep smooth in die cavity；
Molding, 160 DEG C of control mould temperature, adjusting molding pressure is 20MPa, and pressurize 2min, molding are taken out, and silica gel is prepared
Vibrating diaphragm.
By the way of ultrasonic post forming, silica gel is shaken with carbonaceous vibrating diaphragm for the silica gel vibrating diaphragm that preceding method is prepared
Film is securely bonded together with carbonaceous vibrating diaphragm, and one kind is made and has both that sensitivity and identification are high, range is wide, elastic, lightweight, just
The high novel silicon-carbon vibrating diaphragm of property, temperature in use.
Embodiment 4
Silicones is uniformly mixed with epoxy resin to obtain presoma resin by predetermined ratio, particularly, controls silicone content
It is 30%.By silicon-epoxy presoma resin by the equipment containing a succession of casting roller film, it is uniformly coated on containing releasing agent
Kapton on, thickness of the control epoxy presoma resin on film is 0.07mm.Then epoxy forerunner will be loaded with
Body resin control film by the metal box containing hot-air, particularly, control hot air temperature be 77 DEG C, film advance
Speed is 6m/min.After predetermined temperature is handled, the polyamides containing releasing agent is sub- on lid on coated presoma resin
Amine film.It shapes under 170 DEG C, the pressure of 16MPa, obtains epoxy resin presoma resin film.Epoxy resin presoma tree
Adipose membrane mechanically cuts into the diaphragm of predetermined shape.
By the aforementioned diaphragm for cutting into predetermined shape in nitrogen atmosphere protection, it is loaded into 0.5MPa, with the speed of 1 DEG C/min
Degree is warming up to 1000 DEG C of carbonizations, and carbonization obtains the structural porous structure of the mixed type crystal carbon of the siliceous element of hole even compact
Material, wherein 4 μm of aperture, porosity 75%.
A kind of aforementioned preparation method of silica gel vibrating diaphragm of offer, including：Molded pellosil is provided；
The pellosil is introduced into the die cavity of moulding press in a continuous manner, pellosil is made to keep smooth in die cavity；
Molding, 155 DEG C of control mould temperature, adjusting molding pressure is 21MPa, and pressurize 2min, molding are taken out, and silica gel is prepared
Vibrating diaphragm.
By the way of ultrasonic post forming, silica gel is shaken with carbonaceous vibrating diaphragm for the silica gel vibrating diaphragm that preceding method is prepared
Film is securely bonded together with carbonaceous vibrating diaphragm, and one kind is made and has both that sensitivity and identification are high, range is wide, elastic and rigid
It gets well, the novel silicon-carbon vibrating diaphragm that lightweight and temperature in use are high.
Comparative example 1
A kind of carbonaceous diaphragm materials are prepared, silicon powder is uniformly mixed with furane resins to obtain presoma resin, particularly,
It is 14% to control silicone content.By furane resins presoma resin by the equipment containing a succession of casting roller film, it is evenly coated with
On the polystyrene film containing releasing agent, thickness of the control furane resins presoma resin on film is 0.1mm.Then
By be loaded with furane resins presoma resin control film by the metal box containing hot-air, particularly, control hot-air
Temperature is 86 DEG C, and film forward speed is 10m/min.After predetermined temperature is handled, in coated presoma resin upper cover
On the polystyrene film containing releasing agent.It shapes under 150 DEG C, the pressure of 15MPa, obtains presoma resin film.Forerunner
Body resin film mechanically cuts into the diaphragm of predetermined shape.
By the aforementioned diaphragm for cutting into predetermined shape in helium atmosphere protection, it is loaded into 0.6MPa, with the speed of 5 DEG C/min
Degree is warming up to 1000 DEG C of carbonizations, and carbonization obtains the structural porous structure of the mixed type crystal carbon of the siliceous element of hole even compact
Material, wherein 2 μm of aperture, porosity 83%.
Comparative example 2
The present embodiment provides a kind of preparation methods of silica gel vibrating diaphragm, including：Molded pellosil is provided；
The pellosil is introduced into the die cavity of moulding press in a continuous manner, pellosil is made to keep smooth in die cavity；
Molding, 155 DEG C of control mould temperature, adjusting molding pressure is 20MPa, and pressurize 2min, molding are taken out, and silica gel is prepared
Vibrating diaphragm.
According to the above-mentioned technical solution, comparative example 1 is by providing a kind of carbonaceous vibrating diaphragm, the bottom of the carbonaceous vibrating diaphragm
Still use pet film for primer, quality does not mitigate, and inertia is bigger, the vibrating diaphragm application
In acoustic elements, it is easy to cause carbon-coating and shatters distortion greatly, can not reasonably restore/play back voice signal；And comparative example 2
It is provided solely for a kind of silica gel vibrating diaphragm, the elastic and rigidity of the silica gel vibrating diaphragm is poor, which applies its in acoustic elements to vibrate
Dynamically bad, audio presentation is also uneven.
And in the embodiment of the present invention, by the way that silica gel vibrating diaphragm and carbonaceous vibrating diaphragm is a kind of new using being made by way of post forming
Type silicon-carbon vibrating diaphragm also can be with the acoustics list of electrical loudspeaker so as to be conveniently mounted in the acoustic elements of electrical loudspeaker
Member is directly integrally formed, and has higher sensitivity compared to traditional technical solution or pure carbonaceous vibrating diaphragm or pure silicon glue vibrating diaphragm
Simple with identification, technological operation, molding is convenient, can realize extensive preparation, meanwhile, the novel silicon-carbon vibrating diaphragm of preparation itself
With light, range is wide, and elastic and rigidity is good, and high temperature resistant, endurance are influenced the advantages that small by external environments such as moisture.
Obviously, above-described embodiment is only intended to clearly illustrate example, and does not limit the embodiments.For
For those of ordinary skill in the art, other various forms of variations or change can also be made on the basis of the above description
It is dynamic.There is no necessity and possibility to exhaust all the enbodiments.And obvious variation extended from this or change
It is dynamic still within the protection scope of the invention.
Claims (10)
1. a kind of preparation method of silicon-carbon vibrating diaphragm, which is characterized in that the preparation method includes：
Prepare carbonaceous vibrating diaphragm；
The silica gel vibrating diaphragm prepared is provided；
The carbonaceous vibrating diaphragm and the silica gel vibrating diaphragm are closely joined together by post forming mode.
2. preparation method as described in claim 1, which is characterized in that the preparation carbonaceous vibrating diaphragm specifically includes：
A kind of presoma resin, film are provided；
The presoma resin is uniformly coated on the film containing releasing agent；
Cover one layer of film containing releasing agent again on coated presoma resin；
Under predetermined temperature and predetermined pressure, sizing obtains presoma resin film；
The presoma resin film is cut into the diaphragm of predetermined shape by machinery；
By the diaphragm in inert gas shielding environment, under a predetermined, temperature-gradient method is obtained to 1000 DEG C or more carbonizations
There is the carbonaceous vibrating diaphragm of hole even compact.
3. preparation method as claimed in claim 2, which is characterized in that the presoma resin is phenolic resin, polyurethane tree
Fat, furane resins, silicones, unsaturated polyester (UP), alkalescent phenol resin, the combination of one or more of epoxy resin
Object.
4. preparation method as claimed in claim 2, which is characterized in that the presoma resin is siliceous resin composite body,
Wherein silicone content is 0.01%-100%.
5. preparation method as claimed in claim 2, which is characterized in that the presoma thick resin film is 0.01-2mm.
6. preparation method as claimed in claim 2, which is characterized in that the inert gas is nitrogen, argon gas, helium and dioxy
Change one kind in carbon.
7. preparation method as claimed in claim 2, which is characterized in that the predetermined temperature is 70-250 DEG C.
8. preparation method as described in claim 1, which is characterized in that the post forming mode using laser, plasma or
Ultrasonic power.
9. a kind of silicon-carbon vibrating diaphragm, which is characterized in that the silicon-carbon vibrating diaphragm is by the claims 1-8 any one of them preparation side
Method is made.
10. a kind of acoustic elements, which is characterized in that including：Silicon-carbon vibrating diaphragm as claimed in claim 9.
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| CN201810402162.6A CN108574923B (en) | 2018-04-28 | 2018-04-28 | Preparation method of silicon-carbon vibrating diaphragm, carbon vibrating diaphragm and acoustic unit provided with vibrating diaphragm |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110049425A (en) * | 2019-03-13 | 2019-07-23 | 东莞涌韵音膜有限公司 | Moving-coil speaker unit formation technique with miniature vibrating diaphragm |
| CN114105667A (en) * | 2020-08-28 | 2022-03-01 | 常州驰科光电科技有限公司 | Novel ball top material and preparation method thereof |
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| JPS55114097A (en) * | 1979-02-26 | 1980-09-03 | Pioneer Electronic Corp | Carbon diaphragm |
| US5072806A (en) * | 1988-11-25 | 1991-12-17 | Mitsubishi Pencil Co., Ltd. | Diaphragm for acoustic equipment |
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| CN206596206U (en) * | 2017-02-13 | 2017-10-27 | 歌尔科技有限公司 | Vibrating diaphragm component and loudspeaker monomer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110049425A (en) * | 2019-03-13 | 2019-07-23 | 东莞涌韵音膜有限公司 | Moving-coil speaker unit formation technique with miniature vibrating diaphragm |
| CN114105667A (en) * | 2020-08-28 | 2022-03-01 | 常州驰科光电科技有限公司 | Novel ball top material and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN108574923B (en) | 2020-08-07 |
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