JPS6052640B2 - carbon diaphragm - Google Patents
carbon diaphragmInfo
- Publication number
- JPS6052640B2 JPS6052640B2 JP2067979A JP2067979A JPS6052640B2 JP S6052640 B2 JPS6052640 B2 JP S6052640B2 JP 2067979 A JP2067979 A JP 2067979A JP 2067979 A JP2067979 A JP 2067979A JP S6052640 B2 JPS6052640 B2 JP S6052640B2
- Authority
- JP
- Japan
- Prior art keywords
- carbon
- diaphragm
- composite material
- carbon matrix
- synthetic resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims description 31
- 229910052799 carbon Inorganic materials 0.000 title claims description 21
- 239000011159 matrix material Substances 0.000 claims description 13
- 239000002131 composite material Substances 0.000 claims description 10
- 229910002804 graphite Inorganic materials 0.000 claims description 10
- 239000010439 graphite Substances 0.000 claims description 10
- 229920003002 synthetic resin Polymers 0.000 claims description 10
- 239000000057 synthetic resin Substances 0.000 claims description 10
- 229920000592 inorganic polymer Polymers 0.000 claims description 7
- CFOAUMXQOCBWNJ-UHFFFAOYSA-N [B].[Si] Chemical compound [B].[Si] CFOAUMXQOCBWNJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000010304 firing Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
Description
【発明の詳細な説明】
本発明は主に音響機器に用いられる炭素振動板に関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a carbon diaphragm mainly used in audio equipment.
一般に音響機器用の振動板、特にスピーカの振動板とし
て用いられる薄板には、能率が良く、広い周波数帯域に
亘つて忠実に再生するために、軽量て剛性が大きく、か
つヤング率Ｅと密度ρとの比、即ち比こわさＥ／ρが大
きいことが必要とされる。In general, thin plates used as diaphragms for audio equipment, especially speakers, are lightweight and rigid, and have a Young's modulus E and a density ρ, in order to be efficient and reproduce faithfully over a wide frequency range. The ratio of stiffness E/ρ, that is, relative stiffness E/ρ, is required to be large.
これらの点から従来、木材パルプ、アルミニウム、チタ
ンなどの材料が用いられてきたが、そのいずれもが充分
な特性を有しているとは言い難かつた。From these points of view, materials such as wood pulp, aluminum, and titanium have been used in the past, but it is difficult to say that any of them has sufficient properties.
即ち、Ｅ／ρの大きな材料としてボロン、ベリリウム、
炭素などがあるが、これらの材料はその加工性が悪く、
しかも、チタン、アルミニウムを用いた場合には材料の
加工性では比較的良好てあるが、その物理的性質におい
て比こわさＥ／ρが大きくならない欠点があつた。又、
鱗片状黒鉛に合成樹脂炭化物を配向させた複合材にて振
動板を形成したものは軽量且高剛性の特性を有するが、
カーボンマトリックスだけで形成され炭素分子相互がフ
アンデルワールスカで単に結合していると考えられしか
も、焼成の際に分解ガスが発生することによりミクロ的
にはポーラスな構造であるため機械的強度が弱くなる欠
点があつた。That is, boron, beryllium,
There are carbon, etc., but these materials have poor workability,
Moreover, when titanium or aluminum is used, although the workability of the material is relatively good, there is a drawback in its physical properties that the relative stiffness E/ρ is not large. or,
A diaphragm made of a composite material made of scaly graphite and oriented synthetic resin carbide has the characteristics of being lightweight and highly rigid.
It is thought that it is formed only from a carbon matrix, and the carbon molecules are simply bonded to each other through Van der Waalska bonding.Moreover, it has a microscopically porous structure due to the generation of decomposition gas during firing, which reduces its mechanical strength. It had a weakness that made it weak.
本発明は上述の様な点に艦みてなされたものであり、そ
の目的とするところは鱗片状黒鉛と合成樹脂炭化物との
カーボンマトリックスよりなる振動板形状の複合材をシ
リコン−ボロン系セミ無機ポリマーを溶媒中に溶した溶
液内に浸漬し、そして非酸化性雰囲気下で再焼成するこ
とによりシリコン−ボロン系セミ無機ポリマーと前記カ
ーボンマトリックスとを不定形状態に結合したことによ
り機械的強度が強くなつて加工性にも優れ、又比こわさ
が大きくしかも軽量且つ高剛性な炭素振動板を提供する
にある。The present invention has been made in view of the above-mentioned points, and its purpose is to create a diaphragm-shaped composite material made of a carbon matrix of flaky graphite and synthetic resin carbide into a silicone-boron semi-inorganic polymer. The silicon-boron semi-inorganic polymer and the carbon matrix are bonded into an amorphous state by immersing the polymer in a solution dissolved in a solvent and re-firing in a non-oxidizing atmosphere, resulting in strong mechanical strength. To provide a carbon diaphragm that has excellent workability, is relatively stiff, is lightweight, and has high rigidity.
以下、本発明の詳細を製造方法とともに説明する。The details of the present invention will be explained below along with the manufacturing method.
先ず最初に、本発明を構成するカーボンマトリックスか
らなる複合材の製造工程の一例を簡単に説明する。First, an example of the manufacturing process of a composite material made of a carbon matrix constituting the present invention will be briefly described.
先ず、鱗片状黒鉛に合成樹脂を混合し、次いでロール圧
延法等の適宜手段にて前記鱗片状黒鉛と・合成樹脂等の
原材料をシート状として前記鱗片状黒鉛を厚さ方向に配
向させる。First, a synthetic resin is mixed with flaky graphite, and then raw materials such as the flaky graphite and synthetic resin are formed into a sheet shape by appropriate means such as roll rolling, and the flaky graphite is oriented in the thickness direction.
その後、振動板の形状、例えばスピーカ用振動板ならば
コーン型又はドーム型等の適宜形状に成型して真空炉内
で型にセットし、加熱温度を序々に上昇することによつ
て前記合成樹脂を炭化させて前記鱗片状黒鉛とのカーボ
ンマトリックス複合材を形成する。上記の製造に用いる
合成樹脂としては熱可塑性又は熱硬化性の何れの合成樹
脂でもよいが、要は加熱することにより炭化可能な合成
樹脂であればよく、例えばポリ塩化ビニール、ポリイミ
ド、フェノール等の炭素収率の良い各合成樹脂が用いら
れる。そして、本発明は上記のように製造されるカーボ
ンマトリックス複合材を、シリコン−ボロン系セミ無機
ポリマーを溶媒中に溶した溶液内に浸漬する第１工程と
、次いで非酸化性雰囲気下で加熱して再焼成する第２工
程を経て製造される。Thereafter, the diaphragm is formed into an appropriate shape, such as a cone shape or a dome shape in the case of a diaphragm for a speaker, and set in a mold in a vacuum furnace, and the synthetic resin is heated by gradually increasing the heating temperature. is carbonized to form a carbon matrix composite material with the flaky graphite. The synthetic resin used in the above production may be either thermoplastic or thermosetting, but in short, any synthetic resin that can be carbonized by heating is sufficient, such as polyvinyl chloride, polyimide, phenol, etc. Various synthetic resins with good carbon yields are used. The present invention includes a first step of immersing the carbon matrix composite material produced as described above in a solution of a silicon-boron semi-inorganic polymer dissolved in a solvent, and then heating it in a non-oxidizing atmosphere. It is manufactured through a second step of re-firing.
上記製造工程中、カーボンマトリックスを製造するのに
鱗片状黒鉛２００：塩化ビニール１００の重量比をもつ
て製造した場合には真空炉内での炭化温度は５００℃位
とする。そして、シリコン−ボロン系セミ無機ポリマー
を溶す溶媒としてはテトロヒドロフランを用いる。しか
も上記第２工程での非一酸化性雰囲気として例えは窒素
ガスの雰囲気とし、再焼成の加熱温度としては６００℃
〜１２０（代）とする。上記各工程を経て製造される黒
鉛と合成樹脂炭化物とのカーボンマトリックスの複合材
はシリコン−ボロン系セミ無機ポリマーで結合されて共
有結合を含んだ不定形状態の複合材となる。In the above manufacturing process, when the carbon matrix is manufactured with a weight ratio of 200 parts of flaky graphite to 100 parts of vinyl chloride, the carbonization temperature in the vacuum furnace is set at about 500°C. Tetrohydrofuran is used as a solvent for dissolving the silicon-boron semi-inorganic polymer. Moreover, the non-monoxidizing atmosphere in the second step is, for example, a nitrogen gas atmosphere, and the heating temperature for re-firing is 600°C.
~120 (generations). The carbon matrix composite material of graphite and synthetic resin carbide produced through each of the above steps is bonded with a silicon-boron semi-inorganic polymer to become an amorphous composite material containing covalent bonds.
従つて、耐食性、耐熱性、機械的強度は大幅に向上する
。しかも、カーボンマトリックスを主材料にして製造さ
れているため、軽量且つ高剛性にしてＥ／ρは大きい。
上述の様に本発明によつて得られた炭素振動板は、カー
ボンマトリックスの複合材に結合材としてシリコン−ボ
ロン系セミ無機ポリマーを用いて結合することにより共
有結合を含んだ不定形状態となるから、単にカーボンマ
トリックスだけから形成される従来の振動板に比して機
械的強度、耐食性、耐熱性が大きく、又加工性も優れた
ものとなる。Therefore, corrosion resistance, heat resistance, and mechanical strength are significantly improved. Moreover, since it is manufactured using a carbon matrix as the main material, it is lightweight and has high rigidity, and has a large E/ρ.
As described above, the carbon diaphragm obtained by the present invention becomes an amorphous state containing covalent bonds by bonding to a carbon matrix composite material using a silicon-boron semi-inorganic polymer as a binder. Therefore, compared to conventional diaphragms formed solely from a carbon matrix, the diaphragm has greater mechanical strength, corrosion resistance, and heat resistance, and is also superior in workability.
Claims (1)
ックスの複合材に該鱗片状黒鉛を厚さ方向に配向する如
く振動板となるべき形状に焼成するものにして、前記複
合材をシリコン−ボロン系セミ無機ポリマーを主成分と
する溶液内に浸漬して再焼成することによりカーボンマ
トリックスと不定形状態に結合させて成る炭素振動板。1. A carbon matrix composite material of flaky graphite and synthetic resin carbide is fired into a shape that will become a diaphragm so that the flaky graphite is oriented in the thickness direction, and the composite material is made of silicon-boron based material. A carbon diaphragm that is bonded to a carbon matrix in an amorphous state by immersing it in a solution containing a semi-inorganic polymer as its main component and re-baking it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2067979A JPS6052640B2 (en) | 1979-02-26 | 1979-02-26 | carbon diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2067979A JPS6052640B2 (en) | 1979-02-26 | 1979-02-26 | carbon diaphragm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55114097A JPS55114097A (en) | 1980-09-03 |
| JPS6052640B2 true JPS6052640B2 (en) | 1985-11-20 |
Family
ID=12033859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2067979A Expired JPS6052640B2 (en) | 1979-02-26 | 1979-02-26 | carbon diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6052640B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62108581A (en) * | 1985-11-02 | 1987-05-19 | ライセンテイア・パテント−フエルヴアルトウンクス−ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフトウンク | Solar power generation device and its manufacturing method |
| JPH04761U (en) * | 1990-04-16 | 1992-01-07 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2554335Y2 (en) * | 1991-03-04 | 1997-11-17 | セイレイ工業株式会社 | Tractor valve case mounting structure |
| CN108574923B (en) * | 2018-04-28 | 2020-08-07 | 深圳市摩码克来沃化学科技有限公司 | Preparation method of silicon-carbon vibrating diaphragm, carbon vibrating diaphragm and acoustic unit provided with vibrating diaphragm |
-
1979
- 1979-02-26 JP JP2067979A patent/JPS6052640B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62108581A (en) * | 1985-11-02 | 1987-05-19 | ライセンテイア・パテント−フエルヴアルトウンクス−ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフトウンク | Solar power generation device and its manufacturing method |
| JPH04761U (en) * | 1990-04-16 | 1992-01-07 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55114097A (en) | 1980-09-03 |
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