KR20200004998A - Mircoporous block for microspeaker and method of preparing the same - Google Patents
Mircoporous block for microspeaker and method of preparing the same Download PDFInfo
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- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62625—Wet mixtures
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/82—Coating or impregnation with organic materials
- C04B41/83—Macromolecular compounds
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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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
- H04R7/08—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers separated by air or other fluid
Abstract
Description
본 발명은 마이크로스피커용 다공성 블록 및 그 제조 방법에 관한 것이다. The present invention relates to a porous block for a microspeaker and a method of manufacturing the same.
마이크로스피커는 휴대용 기기 등에 구비되어 음향을 발생하는 장치로, 최근 모바일 기기들의 발달에 따라 다양한 기기들에 설치되고 있다. 특히 최근에 개발되는 모바일 기기들은 휴대를 용이하게 하기 위해 경량화, 소형화, 슬림화되는 추세인데, 그에 따라 모바일 기기에 설치되는 마이크로스피커도 소형화, 슬림화될 것이 요구된다. Microspeakers are devices that generate sound in portable devices and the like, and are being installed in various devices according to the development of mobile devices. In particular, recently developed mobile devices are tending to be lightweight, miniaturized, and slim for easy portability. Accordingly, microspeakers installed in mobile devices are required to be miniaturized and slimmed.
그러나 마이크로스피커의 경우 소형화, 슬림화되는 경우 진동판의 면적이 작아지고, 진동판이 진동하며 발생한 소리가 공명하며 증폭되는 공명 공간의 크기 역시도 작아지기 때문에 음압이 작아진다는 문제가 있었다. 이러한 음압의 감소는 특히 저음역대에서 두드러지며, 저음역대에서 음압을 강화하기 위해 다공성 물질인 공기 흡착제를 공명 공간에 배치함으로써, 다공성 물질이 공기 분자를 흡착하여 가상의 음향 공간을 만들게 되며, 저역대의 SPL을 향상되고, 저역대의 THD를 감소시키는 기술이 개발되어 왔다. However, in the case of microspeakers, the size of the diaphragm decreases when the microspeaker is miniaturized and slim, and the sound pressure decreases because the sound generated by vibrating the diaphragm is resonant and the size of the resonance space is also reduced. This decrease in sound pressure is particularly pronounced in the low frequencies, and by placing a porous air adsorbent in the resonance space to enhance the sound pressure in the low frequencies, the porous material adsorbs air molecules to create a virtual acoustic space. Techniques have been developed to improve SPL and reduce low frequency THD.
본 발명은 다공성 블록 및 그 제조 방법을 제공하는 것을 목적으로 한다. An object of the present invention is to provide a porous block and a method of manufacturing the same.
본 발명은 20㎛ 이하의 입자 크기를 갖는 제올라이트 고형분을 바인더와 첨가제를 혼합한 용매에 섞어 균질 분산을 시킨 슬러리를 형성하는 제1 단계; 및 마이크로스피커의 공명공간의 형상으로 가공하여 슬러리를 고정할 수 있는 담지체에 균질 분산된 슬러리를 고정하는 제2 단계;를 거쳐 공명공간 형상으로 다공성 블록을 제조하는 것을 특징으로 하는 다공성 블록 제조방법을 제공한다. The present invention comprises a first step of forming a slurry of homogeneous dispersion by mixing a zeolite solid content having a particle size of 20 ㎛ or less in a solvent mixed with a binder and an additive; And a second step of fixing the homogeneously dispersed slurry to a carrier capable of fixing the slurry by processing into a shape of a resonance space of the microspeaker; and manufacturing a porous block in a resonance space shape. To provide.
또한 본 발명의 다른 일 예로, 제2 단계에서 슬러리를 고정할 수 있는 담지체는 다공성의 폴리머, 세라믹 또는 금속재료로 성형된 것을 특징으로 하는 다공성 블록 제조방법을 제공한다. In another embodiment of the present invention, the support for fixing the slurry in the second step provides a method for producing a porous block, characterized in that formed from a porous polymer, ceramic or metal material.
또한 본 발명의 다른 일 예로, 제1 단계에서 슬러리는 제올라이트 고형분 중량 대비 1~10wt%의 바인더와 0.5~5wt%의 첨가제를 포함하는 것을 특징으로 하는 다공성 블록의 제조 방법을 제공한다. In another embodiment of the present invention, the slurry in the first step provides a method for producing a porous block, characterized in that it comprises a binder of 1 ~ 10wt% relative to the weight of zeolite solid content and 0.5 ~ 5wt% additive.
또한 본 발명의 다른 일 예로, 제2 단계는 담지체에 고정된 슬러리에 포함된 기공제, 분산제 또는 바인더를 제거하는 전처리 혹은 후처리 과정을 포함하는 것을 특징으로 하는 다공성 블록의 제조 방법을 제공한다. In another embodiment of the present invention, the second step provides a method for producing a porous block, characterized in that it comprises a pre- or post-treatment process to remove the pore, dispersant or binder contained in the slurry fixed to the carrier. .
또한 본 발명은 20㎛ 이하의 입자 크기를 갖는 제올라이트 고형분을 바인더와 첨가제를 혼합한 용매에 섞어 균질 분산을 시킨 슬러리를 마이크로스피커의 공명공간의 형상으로 가공한 담지체에 고정하여 제조되는 다공성 블록을 제공한다. In addition, the present invention is a porous block prepared by fixing a slurry prepared by mixing a zeolite solid content having a particle size of 20㎛ or less in a solvent mixed with a binder and an additive to a carrier processed in the shape of the resonance space of a micro speaker to provide.
또한 본 발명의 다른 일 예로, 다공성 블록의 표면은 제올라이트 고형분 대비 1~15wt%의 고분자 코팅층이 형성된 것을 특징으로 하는 다공성 블록을 제공한다. In another embodiment of the present invention, the surface of the porous block provides a porous block, characterized in that the polymer coating layer of 1 to 15wt% relative to the zeolite solids.
또한 본 발명의 다른 일 예로, 입자 표면의 고분자 코팅층은 바인더, 첨가제 혹은 바인더와 첨가제가 혼합된 상태로 형성되는 다공성 블록을 제공한다. In another embodiment of the present invention, the polymer coating layer on the surface of the particle provides a porous block formed in a binder, an additive, or a mixture of a binder and an additive.
또한 본 발명의 다른 일 예로, 다공성 블록 내부는 첨가제인 기공제로부터 연유하는 0.1~20um의 기공을 포함하는 것을 특징으로 하는 다공성 블록을 제공한다.In another embodiment of the present invention, the porous block provides a porous block, characterized in that it comprises a pore of 0.1 ~ 20um derived from the pore-forming agent as an additive.
본 발명이 제공하는 다공성 블록은 마이크로스피커의 공명 공간에 꼭 맞는 크기로 제조할 수 있어, 종래의 다공성 입자를 마이크로스피커에 적용하는 것에 비해 다공성 입자를 별도의 파우치 등에 담은 다음 적용하지 않고 다공성 블록을 바로 적용할 수 있다는 장점이 있다. Porous block provided by the present invention can be manufactured in a size that fits the resonance space of the microspeaker, compared to applying the conventional porous particles to the microspeaker, the porous block is contained in a separate pouch, etc. and then applied without The advantage is that it can be applied immediately.
도 1은 본 발명의 일 실시예에 따른 다공성 블록의 제조 방법을 나타낸 플로우차트. 1 is a flowchart illustrating a method of manufacturing a porous block according to an embodiment of the present invention.
이하, 도면을 참조하여 본 발명을 더욱 상세하게 설명한다. Hereinafter, the present invention will be described in more detail with reference to the drawings.
본 발명에 따른 다공성 블록은 마이크로 단위의 입자 크기를 갖는 제올라이트 고형분을 바인더와 첨가제를 혼합한 용매에 섞어 균질 분산을 시킨 슬러리를 형성하는 제1 단계(S1) 및 마이크로스피커의 공명공간의 형상으로 가공하여 슬러리를 고정할 수 있는 담지체에 균질 분산된 슬러리를 고정하는 제2 단계(S2)를 거쳐 공명공간 형상으로 제조된다. 바인더는 PVA, PEG 혹은 PA와 같은 고분자 바인더 중에서 어느 하나 이상을 혼합하며, 첨가제로는 분산제는 분산성을 높이기 위한 분산제나, 슬러리 내부 기포를 제거하기 위한 소포제 등을 포함할 수 있다. The porous block according to the present invention is processed into a shape of a resonance space of the microspeaker and the first step (S1) of forming a slurry in which the zeolite solid content having a particle size of micro units is mixed with a solvent mixed with a binder and an additive to form a homogeneous dispersion. By the second step (S2) for fixing the slurry homogeneously dispersed in the carrier to which the slurry can be fixed in the form of a resonance space. The binder mixes any one or more of a polymer binder such as PVA, PEG, or PA, and the additive may include a dispersant for increasing dispersibility, an antifoaming agent for removing bubbles in the slurry, and the like.
슬러리는 제올라이트 고형분 중량 대비 1~10wt%의 바인더와 0.5~5wt%의 첨가제를 포함하는 것이 바람직하다. 제2단계의 전처리 혹은 후처리 단계로 담지체에 고정된 슬러리에 포함된 기공제, 분산제 또는 바인더를 제거하는 과정(S3)을 더 포함할 수 있다. 이 과정은 드라이아이스나 액체질소 또는 열교환기와 진공 펌프의 조합을 이용할 수 있다. 이 과정에서 상변화 현상을 유도하여 용매를 승화시키는 등의 방법으로 입자를 건조시킨다. The slurry preferably contains 1 to 10 wt% binder and 0.5 to 5 wt% additives based on the weight of zeolite solids. The method may further include removing the pore agent, the dispersant, or the binder included in the slurry fixed to the carrier by the second step of pretreatment or aftertreatment. This process may use dry ice or liquid nitrogen or a combination of heat exchangers and vacuum pumps. In this process, the particles are dried by inducing a phase change phenomenon and subliming the solvent.
한편, 슬러리를 고정할 수 있는 담지체는 다공성의 폴리머, 세라믹 또는 금속재료로 성형될 수 있다. On the other hand, the carrier to which the slurry can be fixed may be molded from a porous polymer, ceramic or metal material.
제조된 다공성 블록의 표면은 제올라이트 고형분 대비 1~15wt%의 고분자 코팅층이 형성되는 것이 바람직하다. The surface of the prepared porous block is preferably a polymer coating layer of 1 ~ 15wt% compared to the zeolite solids.
블록 표면의 고분자 코팅층은 바인더 및 첨가제 중 하나 이상으로 형성된다. 즉, 바인더로 코팅층이 형성될 수도 있고, 첨가제로 코팅층이 형성될 수도 잇으며, 바인더와 첨가제가 혼합된 것으로 코팅층이 형성될 수 있다. 코팅층은 다공성 입자가 만들어지는 과정에서 용매가 제거되면서 코팅층을 형성하기도 하고, 구형 입자가 만들어진 후에 코팅층이 형성할 수도 있다. 코팅층의 재료는 유/무기 폴리머 바인더나, 페인트나 잉크 제조 등에 쓰이는 첨가제 종류와 바인더가 섞여인 것을 수도 있다. The polymer coating layer on the block surface is formed of at least one of a binder and an additive. That is, the coating layer may be formed of a binder, the coating layer may be formed of an additive, and the coating layer may be formed of a mixture of a binder and an additive. The coating layer may form a coating layer while the solvent is removed in the process of forming the porous particles, or may be formed after the spherical particles are made. The material of the coating layer may be a mixture of an organic / inorganic polymer binder, an additive used in paint or ink production, and a binder.
한편 다공성 블록 내부는 첨가제인 기공제로부터 연유하는 0.1~20㎛의 기공을 포함한다. 기공제는 물이나 물과 유기용매의 혼합물로부터 유래되며, 용매가 기공제 역할을 하게된다. 즉, 급속 동결된 액적에서 용매가 제거되면서 다공성 블록 내부에 미세 기공을 형성하게 된다. On the other hand, the inside of the porous block includes pores of 0.1 ~ 20㎛ condensed from the pore agent as an additive. The pore is derived from water or a mixture of water and an organic solvent, and the solvent serves as a pore. That is, as the solvent is removed from the rapidly frozen droplets, fine pores are formed in the porous block.
Claims (8)
마이크로스피커의 공명공간의 형상으로 가공하여 슬러리를 고정할 수 있는 담지체에 균질 분산된 슬러리를 고정하는 제2 단계;를 거쳐 공명공간 형상으로 다공성 블록을 제조하는 것을 특징으로 하는 다공성 블록 제조방법. A first step of mixing a zeolite solid having a particle size of 20 μm or less in a solvent in which a binder and an additive are mixed to form a slurry having a homogeneous dispersion;
And a second step of fixing the homogeneously dispersed slurry to a carrier capable of fixing the slurry by processing into a shape of a resonance space of the microspeaker.
제2 단계에서 슬러리를 고정할 수 있는 담지체는 다공성의 폴리머, 세라믹 또는 금속재료로 성형된 것을 특징으로 하는 다공성 블록 제조방법. The method of claim 1,
The carrier that can fix the slurry in the second step is a porous block manufacturing method, characterized in that formed from a porous polymer, ceramic or metal material.
제1 단계에서 슬러리는 제올라이트 고형분 중량 대비 1~10wt%의 바인더와 0.5~5wt%의 첨가제를 포함하는 것을 특징으로 하는 다공성 블록의 제조 방법.The method of claim 1,
The slurry in the first step is a method for producing a porous block, characterized in that containing 1 to 10wt% binder and 0.5 to 5wt% additive based on the weight of zeolite solids.
제2 단계는 담지체에 고정된 슬러리에 포함된 기공제, 분산제 또는 바인더를 제거하는 전처리 혹은 후처리 과정을 포함하는 것을 특징으로 하는 다공성 블록의 제조 방법. The method of claim 1,
The second step is a method for producing a porous block, characterized in that it comprises a pre- or post-treatment process to remove the pore, dispersant or binder contained in the slurry fixed to the carrier.
다공성 블록의 표면은 제올라이트 고형분 대비 1~15wt%의 고분자 코팅층이 형성된 것을 특징으로 하는 다공성 블록. The method of claim 5,
The surface of the porous block is a porous block, characterized in that the polymer coating layer of 1 ~ 15wt% compared to the zeolite solids.
입자 표면의 고분자 코팅층은 바인더, 첨가제 혹은 바인더와 첨가제가 혼합된 상태로 형성되는 다공성 블록.The method of claim 6,
The polymer coating layer on the particle surface is a porous block formed in a binder, an additive or a mixture of a binder and an additive.
다공성 블록 내부는 첨가제인 기공제로부터 연유하는 0.1~20㎛의 기공을 포함하는 것을 특징으로 하는 다공성 블록.The method of claim 5,
The porous block is a porous block, characterized in that it comprises pores of 0.1 ~ 20㎛ condensed from the pore agent as an additive.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113079437A (en) * | 2021-03-16 | 2021-07-06 | 苏州夸克新材料科技有限公司 | Gas absorption material block and manufacturing method thereof |
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| US8687836B2 (en) | 2012-08-31 | 2014-04-01 | Bose Corporation | Loudspeaker system |
| EP2424270B1 (en) | 2010-08-23 | 2014-05-21 | Knowles Electronics Asia PTE. Ltd. | Loudspeaker system with improved sound |
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2018
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2424270B1 (en) | 2010-08-23 | 2014-05-21 | Knowles Electronics Asia PTE. Ltd. | Loudspeaker system with improved sound |
| US8687836B2 (en) | 2012-08-31 | 2014-04-01 | Bose Corporation | Loudspeaker system |
Non-Patent Citations (1)
| Title |
|---|
| http://www.knowles.com/eng/Products/Receivers-and-speakers/Speaker-enhancement-technology |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113079437A (en) * | 2021-03-16 | 2021-07-06 | 苏州夸克新材料科技有限公司 | Gas absorption material block and manufacturing method thereof |
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