CN109467930A - A kind of earphone diaphragm material and preparation method thereof - Google Patents
A kind of earphone diaphragm material and preparation method thereof Download PDFInfo
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- C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08J2379/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2433/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
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- C08J2471/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
- C08J2471/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
- C08J2471/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
- C08J2471/12—Polyphenylene oxides
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- 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
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- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
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- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
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Abstract
The invention discloses a kind of earphone diaphragm material and preparation method thereof, the raw material of earphone diaphragm material is formed are as follows: polyetherimide resin: 60-80 parts；Thermoplastic resin: 15-30 parts；Fibrous type filler: 10-30 parts；Compatibility agent: 5-10 parts；Modifying agent: 0.5-1 parts；Antioxidant: 0.5-1 parts；Lubricant: 0.5-2 parts, the thermoplastic resin is one or more of polyethylene, polypropylene, polyvinyl chloride, polystyrene, polymethyl methacrylate, polyester, polyformaldehyde, polyamide, polyphenylene oxide, and the fibrous type filler is one of glass fibre, ceramic fibre, carbon fiber.The present invention has excellent heat resistance, and easy processing, plasticity are high by the polyetherimide composite material of addition fibrous type filler preparation, and in the case where condition of equivalent thickness, equal quality, rigidity is bigger, and it is excellent earphone diaphragm material that thinner softer draftability is high.
Description
Technical field
The present invention relates to earphone field of material technology, specially a kind of earphone diaphragm material and preparation method thereof.
Background technique
Earphone is our usually one of very high carry-on equipment of frequency of use, and a good earphone can not only allow your to enjoy
The high tone quality details richer with listening, while also damage of the hearing of let us from those rotten earphones.It is most normal for people
For moving-coil earphone, influencing loudspeaker unit element qualitative factor has very much, and vibrating diaphragm is then that can loudspeaker unit possess element
One of critical component of matter.So-called vibrating diaphragm is an element very sensitive for changes of magnetic field in fact, when electric signal passes through coil
When, magnetic field generates variation, leads to vibrating diaphragm stress deformation.Quickly due to change in electric, lead to vibrating diaphragm vibration at high speed, then lead to
Over vibration vibration of membrane passes to air, to produce sound wave, in this process, the quality of vibrating diaphragm determines the entirety of earphone
Quality.The type of vibrating diaphragm has very much, has papery vibrating diaphragm, wooden vibrating diaphragm, plastics vibrating diaphragm, metal vibration diaphragm, biological vibrating diaphragm etc., generally exists
In earphone, the design requirement of vibrating diaphragm is that quality is lighter, rigidity is better preferably, and such vibrating diaphragm can be completely by the dynamic of coil
Sound can be converted to.
Polyetherimide (PEI) vibrating diaphragm is a kind of common plastics vibrating diaphragm, and polyetherimide has plasticity high, easily
Processing, advantage at low cost, but rigidity it is poor, internal resistance is small, be easy to cause distortion, if to obtain preferable rigidity, need with
Increase vibrating diaphragm with a thickness of cost, so, it would be desirable to the big polyetherimide composite material of a kind of light weight, rigidity.
Summary of the invention
The purpose of the present invention is to provide a kind of earphone diaphragm materials and preparation method thereof, to solve in above-mentioned background technique
It is proposed the problem that existing polyetherimide material is rigidly poor, internal resistance is small.
To achieve the above object, the invention provides the following technical scheme: a kind of earphone diaphragm material and preparation method thereof,
The raw material of earphone diaphragm material forms are as follows:
Polyetherimide resin: 60-80 parts；
Thermoplastic resin: 15-30 parts；
Fibrous type filler: 10-30 parts；
Compatibility agent: 5-10 parts；
Modifying agent: 0.5-1 parts；
Antioxidant: 0.5-1 parts；
Lubricant: 0.5-2 parts.
Preferably, the thermoplastic resin is polyethylene, polypropylene, polyvinyl chloride, polystyrene, poly-methyl methacrylate
One or more of ester, polyester, polyformaldehyde, polyamide, polyphenylene oxide.
Preferably, the fibrous type filler is one of glass fibre, ceramic fibre, carbon fiber.
A kind of preparation method of earphone diaphragm material, preparation process the following steps are included:
S1, it is added in high speed ingredient blender after drying polyetherimide resin, adds thermoplastic resin, fibrous type
Filler, compatibility agent and modifying agent are uniformly mixed and obtain mixture A；
S2, addition antioxidant and lubricant prefabricated mixture will be obtained in mixture A obtained in S1；
S3, the prefabricated mixture in S2 is placed in Φ 36-65mm, in the equidirectional parallel double-screw extruder of L/D=36-48
The extruding pelletization after melting；
S4, by material that extruding pelletization in S3 obtains it is cooling after be placed in pelleter and carry out pelletizing, obtain polyetherimide
Amine composite material, i.e., required earphone diaphragm material.
Preferably, the drying temperature of the polyetherimide resin raw material is 120-140 degree, and drying time is 3-6 hours.
Preferably, the process conditions of the double screw extruder melting extrusion are as follows: one section of temperature 280-300 degree, two sections of temperature
Spend 300-330 degree, three sections of temperature 330-350 degree, four sections of temperature 350-370 degree, five sections of temperature 370-380 degree, six Duan Wendu
340 degree of 360-380 degree, die head temperature.
Compared with prior art, the beneficial effects of the present invention are: the polyethers that the present invention passes through addition fibrous type filler preparation
Acid imide composite material has excellent heat resistance, and easy processing, plasticity are high, and in condition of equivalent thickness, equal quality
In the case where, rigidity is bigger, and it is excellent earphone diaphragm material that thinner softer draftability is high.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The present invention provides a kind of technical solution: a kind of earphone diaphragm material and preparation method thereof, earphone diaphragm material
Raw material composition are as follows:
Polyetherimide resin: 60-80 parts；
Thermoplastic resin: 15-30 parts；
Fibrous type filler: 10-30 parts；
Compatibility agent: 5-10 parts；
Modifying agent: 0.5-1 parts；
Antioxidant: 0.5-1 parts；
Lubricant: 0.5-2 parts.
Embodiment one:
The composition proportion of use are as follows:
Polyetherimide resin: 60 parts；
Thermoplastic resin: 20 parts；
Fibrous type filler: 10 parts；
Compatibility agent: 6 parts；
Modifying agent: 1 part；
Antioxidant: 1 part；
Lubricant: 2 parts.
In the present embodiment, thermoplastic resin is polyethylene, polypropylene, polyvinyl chloride, polystyrene, poly-methyl methacrylate
One or more of ester, polyester, polyformaldehyde, polyamide, polyphenylene oxide.
In the present embodiment, fibrous type filler is one of glass fibre, ceramic fibre, carbon fiber.
The preparation process of the present embodiment the following steps are included:
S1, it is added in high speed ingredient blender after drying polyetherimide resin, adds thermoplastic resin, fibrous type
Filler, compatibility agent and modifying agent are uniformly mixed and obtain mixture A；
S2, addition antioxidant and lubricant prefabricated mixture will be obtained in mixture A obtained in S1；
S3, the prefabricated mixture in S2 is placed in Φ 36-65mm, in the equidirectional parallel double-screw extruder of L/D=36-48
The extruding pelletization after melting；
S4, by material that extruding pelletization in S3 obtains it is cooling after be placed in pelleter and carry out pelletizing, obtain polyetherimide
Amine composite material, i.e., required earphone diaphragm material.
In the present embodiment, the drying temperature of polyetherimide resin raw material is 120-140 degree, and drying time is 3-6 hours.
In the present embodiment, the process conditions of double screw extruder melting extrusion are as follows: one section of temperature 280-300 degree, two sections of temperature
Spend 300-330 degree, three sections of temperature 330-350 degree, four sections of temperature 350-370 degree, five sections of temperature 370-380 degree, six Duan Wendu
340 degree of 360-380 degree, die head temperature.
Embodiment two:
The composition proportion of use are as follows:
Polyetherimide resin: 60 parts；
Thermoplastic resin: 15 parts；
Fibrous type filler: 15 parts；
Compatibility agent: 8 parts；
Modifying agent: 1 part；
Antioxidant: 0.5 part；
Lubricant: 0.5 part.
In the present embodiment, thermoplastic resin is polyethylene, polypropylene, polyvinyl chloride, polystyrene, poly-methyl methacrylate
One or more of ester, polyester, polyformaldehyde, polyamide, polyphenylene oxide.
In the present embodiment, fibrous type filler is one of glass fibre, ceramic fibre, carbon fiber.
The preparation process of the present embodiment the following steps are included:
S1, it is added in high speed ingredient blender after drying polyetherimide resin, adds thermoplastic resin, fibrous type
Filler, compatibility agent and modifying agent are uniformly mixed and obtain mixture A；
S2, addition antioxidant and lubricant prefabricated mixture will be obtained in mixture A obtained in S1；
S3, the prefabricated mixture in S2 is placed in Φ 36-65mm, in the equidirectional parallel double-screw extruder of L/D=36-48
The extruding pelletization after melting；
S4, by material that extruding pelletization in S3 obtains it is cooling after be placed in pelleter and carry out pelletizing, obtain polyetherimide
Amine composite material, i.e., required earphone diaphragm material.
In the present embodiment, the drying temperature of polyetherimide resin raw material is 120-140 degree, and drying time is 3-6 hours.
In the present embodiment, the process conditions of double screw extruder melting extrusion are as follows: one section of temperature 280-300 degree, two sections of temperature
Spend 300-330 degree, three sections of temperature 330-350 degree, four sections of temperature 350-370 degree, five sections of temperature 370-380 degree, six Duan Wendu
340 degree of 360-380 degree, die head temperature.
Embodiment three:
The composition proportion of use are as follows:
Polyetherimide resin: 65 parts；
Thermoplastic resin: 15 parts；
Fibrous type filler: 13 parts；
Compatibility agent: 5 parts；
Modifying agent: 0.5 part；
Antioxidant: 0.5 part；
Lubricant: 1 part.
In the present embodiment, thermoplastic resin is polyethylene, polypropylene, polyvinyl chloride, polystyrene, poly-methyl methacrylate
One or more of ester, polyester, polyformaldehyde, polyamide, polyphenylene oxide.
In the present embodiment, fibrous type filler is one of glass fibre, ceramic fibre, carbon fiber.
The preparation process of the present embodiment the following steps are included:
S1, it is added in high speed ingredient blender after drying polyetherimide resin, adds thermoplastic resin, fibrous type
Filler, compatibility agent and modifying agent are uniformly mixed and obtain mixture A；
S2, addition antioxidant and lubricant prefabricated mixture will be obtained in mixture A obtained in S1；
S3, the prefabricated mixture in S2 is placed in Φ 36-65mm, in the equidirectional parallel double-screw extruder of L/D=36-48
The extruding pelletization after melting；
S4, by material that extruding pelletization in S3 obtains it is cooling after be placed in pelleter and carry out pelletizing, obtain polyetherimide
Amine composite material, i.e., required earphone diaphragm material.
In the present embodiment, the drying temperature of polyetherimide resin raw material is 120-140 degree, and drying time is 3-6 hours.
In the present embodiment, the process conditions of double screw extruder melting extrusion are as follows: one section of temperature 280-300 degree, two sections of temperature
Spend 300-330 degree, three sections of temperature 330-350 degree, four sections of temperature 350-370 degree, five sections of temperature 370-380 degree, six Duan Wendu
340 degree of 360-380 degree, die head temperature.
The present invention proposes a kind of earphone diaphragm material and preparation method thereof, has an excellent heat resistance, and easy processing, can
Plasticity is high, and in the case where condition of equivalent thickness, equal quality, and rigidity is bigger, and it is excellent ear that thinner softer draftability is high
Machine diaphragm materials, to solve the problems, such as to propose that existing polyetherimide material is rigidly poor, internal resistance is small in above-mentioned background technique.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of earphone diaphragm material and preparation method thereof, it is characterised in that: the raw material of its earphone diaphragm material forms are as follows:
Polyetherimide resin: 60-80 parts；
Thermoplastic resin: 15-30 parts；
Fibrous type filler: 10-30 parts；
Compatibility agent: 5-10 parts；
Modifying agent: 0.5-1 parts；
Antioxidant: 0.5-1 parts；
Lubricant: 0.5-2 parts.
2. a kind of earphone diaphragm material according to claim 1, it is characterised in that: the thermoplastic resin be polyethylene,
One of polypropylene, polyvinyl chloride, polystyrene, polymethyl methacrylate, polyester, polyformaldehyde, polyamide, polyphenylene oxide or
It is several.
3. a kind of earphone diaphragm material according to claim 1, it is characterised in that: the fibrous type filler is glass fibers
One of dimension, ceramic fibre, carbon fiber.
4. a kind of preparation method of earphone diaphragm material, it is characterised in that: its preparation process the following steps are included:
S1, it is added in high speed ingredient blender after drying polyetherimide resin, adds thermoplastic resin, fibrous type is filled out
Material, compatibility agent and modifying agent are uniformly mixed and obtain mixture A；
S2, addition antioxidant and lubricant prefabricated mixture will be obtained in mixture A obtained in S1；
S3, the prefabricated mixture in S2 is placed in Φ 36-65mm, is passed through in the equidirectional parallel double-screw extruder of L/D=36-48 molten
Melt rear extruding pelletization；
S4, by material that extruding pelletization in S3 obtains it is cooling after be placed in pelleter and carry out pelletizing, obtain answering polyetherimide
Condensation material, i.e., required earphone diaphragm material.
5. a kind of preparation method of earphone diaphragm material according to claim 1, it is characterised in that: the polyetherimide
The drying temperature of resin raw material is 120-140 degree, and drying time is 3-6 hours.
6. a kind of preparation method of earphone diaphragm material according to claim 1, it is characterised in that: the twin-screw extrusion
The process conditions of machine melting extrusion are as follows: one section of temperature 280-300 degree, two sections of temperature 300-330 degree, three sections of temperature 330-350 degree,
Four sections of temperature 350-370 degree, five sections of temperature 370-380 degree, six sections of temperature 360-380 degree, 340 degree of die head temperature.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021082249A1 (en) * | 2019-10-31 | 2021-05-06 | 歌尔股份有限公司 | Vibration diaphragm for micro sound-producing device and micro sound-producing device |
| CN113248918A (en) * | 2021-04-19 | 2021-08-13 | 深圳市博盛新材料有限公司 | High-hardness corrosion-resistant modified plastic material and preparation method thereof |
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| US3827012A (en) * | 1973-04-10 | 1974-07-30 | Fire Devices Mfg Ltd | Fire detector |
| CN101288336A (en) * | 2005-10-14 | 2008-10-15 | Kh化学有限公司 | Acoustic diaphragm and speakers having the same |
| CN201204688Y (en) * | 2008-02-29 | 2009-03-04 | 瑞声声学科技(常州)有限公司 | Compound diaphragm |
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| CN113248918A (en) * | 2021-04-19 | 2021-08-13 | 深圳市博盛新材料有限公司 | High-hardness corrosion-resistant modified plastic material and preparation method thereof |
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