CN103929710A - 一种复合振膜的制备方法 - Google Patents

一种复合振膜的制备方法 Download PDF

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Publication number
CN103929710A
CN103929710A CN201410174169.9A CN201410174169A CN103929710A CN 103929710 A CN103929710 A CN 103929710A CN 201410174169 A CN201410174169 A CN 201410174169A CN 103929710 A CN103929710 A CN 103929710A
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China
Prior art keywords
preparation
composite diaphragm
raw material
mixture
vibrating diaphragm
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Pending
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CN201410174169.9A
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English (en)
Inventor
朱秉科
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AAC Microtech Changzhou Co Ltd
AAC Optoelectronic Changzhou Co Ltd
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AAC Optoelectronic Changzhou Co Ltd
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Priority to CN201410174169.9A priority Critical patent/CN103929710A/zh
Publication of CN103929710A publication Critical patent/CN103929710A/zh
Priority to US14/522,650 priority patent/US20150306793A1/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/003—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/12—Spreading-out the material on a substrate, e.g. on the surface of a liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/026—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles characterised by the shape of the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
    • B29C41/28—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length by depositing flowable material on an endless belt
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/38—Loudspeaker cones; Acoustic diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/025—Diaphragms comprising polymeric materials

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

本发明公开了一种复合振膜的制备方法，其包括以下步骤：提供一种粉末状石墨烯；提供一种高分子原料；将所述石墨烯与高分子原料进行混合得到混合物；将所述混合物进行加热以得到混合浆体；采用流延成型方法将上述混合浆体压制成复合振膜。本发明提供的复合振膜的制作方法简单，并且具有强度高、性能优良等特性。

Description

一种复合振膜的制备方法
【技术领域】
本发明涉及一种复合振膜的制备方法。
【背景技术】
随着市场需求的不断提高，手机逐渐向薄型化方向发展，而且要求其声音质量越来越好，这就要求手机中的声学器件向着小型、薄型、高音质发展。振膜是扬声器等声学器件的核心部件，对其声学性能的要求也就随之提高。
在相关技术中的振膜是通过单一的布膜或其他可热压成型材料压制而成。然而，此结构的振膜，在高频时，由于刚性不够，容易产生分割振动，影响失真和听感。另外，在实际应用中，在不影响音质的同时，为提高振膜的强度，业内常用的做法为增加振膜上局部区域的厚度，可是，单一材料制成的振膜，压成后振膜各处的厚度相同，不能满足上述要求。
因此，有必要提供一种新的复合振膜来克服上述缺点。
【发明内容】
本发明的目的在于提供一种复合振膜的制备方法。
本发明的目的是这样实现的：
一种复合振膜的制备方法，其包括以下步骤：
S1：提供一种粉末状石墨烯；
S2：提供一种高分子原料；
S3：将所述石墨烯与高分子原料进行混合得到混合物；
S4：将所述混合物进行加热以得到混合浆体；
S5：采用流延成型方法将上述混合浆体压制成复合振膜。
优选的，所述高分子原料为颗粒状结构。
优选的，步骤S4中，还包括在混合浆体中加入粘结剂、分散剂、溶剂并混合以形成混合浆料。
优选的，步骤S5中，所述混合浆料经除泡后进行流延成型。
优选的，进一步将所述流延成型的复合振膜进行干燥。
优选的，所述高分子原料为聚醚醚酮、聚萘二甲酸乙二醇酯、聚对苯二甲酸乙二醇酯、聚苯硫醚、聚芳酯中的任意一种。
与相关技术的振膜相比较，本发明的复合振膜强度较高，性能优良，且工艺简单，生产成本低。
【附图说明】
图1为本发明复合振膜的制作流程图。
【具体实施方式】
下面对本发明复合振膜作详细说明。参照图1所示，
一种复合振膜的制备方法，其包括以下步骤：
S1：提供一种粉末状石墨烯；
S2：提供一种高分子原料；
S3：将所述石墨烯与高分子原料进行混合得到混合物；
S4：将所述混合物进行加热以得到混合浆体；
S5：采用流延成型方法将上述混合浆体压制成复合振膜。
在本实施方式中，所述S2提供的高分子原料为固体的颗粒状或粉末状结构。所述石墨烯与高分子原料进行充分的混合和搅拌后得到固态的混合物。然后将该混合物加热至熔融状态以得到混合浆体，优选的，在所述混合浆体中加入粘结剂、分散剂和溶剂等并进行充分的搅拌和混合，以形成混合浆料。
随后，将所述混合浆料经除泡后进行流延成型。进一步将所述流延成型的复合振膜进行干燥。
所述高分子原料可以为PEEK(polyetheretherketone，聚醚醚酮)、PEN(polyethylene naphthalate，聚萘二甲酸乙二醇酯)、PET(polyethyleneterephthalate，聚对苯二甲酸乙二醇酯)、PPS(Polyphenylene sulfide，聚苯硫醚)或PAR(Polyarylate，聚芳酯)中的任意一种。
其中以PEEK聚醚醚酮材料为最优，因为聚醚醚酮具有弹性模量高和耐磨性强的优点，以增强复合振膜的强度和刚性，提高复合振膜的声学性能。
本发明提供的复合振膜的制作方法简单、生产成本低，并且该复合振膜具有强度高、性能优良等特性，且区别于传统的复合振膜具有牢固稳定可靠性能高的特点。所述复合振膜可以用于扬声器、受话器等电声器件中。
以上所述仅为本发明的较佳实施方式，本发明的保护范围并不以上述实施方式为限，但凡本领域普通技术人员根据本发明所揭示内容所作的等效修饰或变化，皆应纳入权利要求书中记载的保护范围内。

Claims (6)

1.一种复合振膜的制备方法，其特征在于：其包括以下步骤：
S1：提供一种粉末状石墨烯；
S2：提供一种高分子原料；
S3：将所述石墨烯与高分子原料进行混合得到混合物；
S4：将所述混合物进行加热以得到混合浆体；
S5：采用流延成型方法将上述混合浆体压制成复合振膜。
2.根据权利要求1所述的复合振膜的制备方法，其特征在于：所述高分子原料为颗粒状结构。
3.根据权利要求2所述的复合振膜的制备方法，其特征在于：步骤S4中，还包括在混合浆体中加入粘结剂、分散剂、溶剂并充分混合以形成混合浆料。
4.根据权利要求3所述的复合振膜的制备方法，其特征在于：步骤S5中，所述混合浆料经除泡后进行流延成型。
5.根据权利要求4所述的复合振膜的制备方法，其特征在于：进一步将所述流延成型的复合振膜进行干燥。
6.根据权利要求1到5任意一项所述的复合振膜的制备方法，其特征在于：所述高分子原料为聚醚醚酮、聚萘二甲酸乙二醇酯、聚对苯二甲酸乙二醇酯、聚苯硫醚、聚芳酯中的任意一种。
CN201410174169.9A 2014-04-25 2014-04-25 一种复合振膜的制备方法 Pending CN103929710A (zh)

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US14/522,650 US20150306793A1 (en) 2014-04-25 2014-10-24 Method for manufacturing compound diaphragm

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105323697A (zh) * 2014-07-28 2016-02-10 美特科技(苏州)有限公司 一种复合振膜的制造方法及使用该方法制造的振膜
CN105451150A (zh) * 2014-08-26 2016-03-30 美特科技(苏州)有限公司 一种加劲振膜的制造方法及使用该方法制造的振膜
WO2019036900A1 (zh) * 2017-08-22 2019-02-28 周金进 扬声器振膜表面设覆膜方法
CN114806099A (zh) * 2021-01-28 2022-07-29 慧隆科技股份有限公司 石墨烯母粒与石墨烯震膜的制造方法

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CN113444266A (zh) * 2020-03-26 2021-09-28 慧隆科技股份有限公司 石墨烯酯粒与石墨烯震膜的制造方法

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JP2010251816A (ja) * 2009-04-10 2010-11-04 Toa Corp 薄型音響電気機械変換器
CN102572660A (zh) * 2010-12-10 2012-07-11 韩国电子通信研究院 压电扬声器
CN102547534A (zh) * 2010-12-30 2012-07-04 志丰电子股份有限公司 薄膜永电体、薄膜永电体制作方法及其声音播放装置
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105323697A (zh) * 2014-07-28 2016-02-10 美特科技(苏州)有限公司 一种复合振膜的制造方法及使用该方法制造的振膜
CN105451150A (zh) * 2014-08-26 2016-03-30 美特科技(苏州)有限公司 一种加劲振膜的制造方法及使用该方法制造的振膜
CN105451150B (zh) * 2014-08-26 2019-03-08 美特科技(苏州)有限公司 一种加劲振膜的制造方法及使用该方法制造的振膜
WO2019036900A1 (zh) * 2017-08-22 2019-02-28 周金进 扬声器振膜表面设覆膜方法
CN114806099A (zh) * 2021-01-28 2022-07-29 慧隆科技股份有限公司 石墨烯母粒与石墨烯震膜的制造方法

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