JPS61111963A - Manufacture of carbon formed body - Google Patents
Manufacture of carbon formed bodyInfo
- Publication number
- JPS61111963A JPS61111963A JP59231297A JP23129784A JPS61111963A JP S61111963 A JPS61111963 A JP S61111963A JP 59231297 A JP59231297 A JP 59231297A JP 23129784 A JP23129784 A JP 23129784A JP S61111963 A JPS61111963 A JP S61111963A
- Authority
- JP
- Japan
- Prior art keywords
- pitch
- fibers
- carbon
- weight
- oxidized
- 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.)
- Granted
Links
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、炭素成形体の製造法に関し、詳しぐは成形体
の形くずれがなく、しかも気泡の生成を抑制して高密度
・高強度の成形体を得ることのできる方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a carbon molded body, and more specifically, to a method for producing a molded body with high density and high strength by preventing the shape of the molded body from deforming and suppressing the generation of air bubbles. Regarding how it can be done.
従来より高強度の炭素成形体を製造する方法として、炭
素繊維を熱硬化性樹脂やピッチなどを結合剤として成形
体を製造したのち加圧下に焼成する方法が提案されてい
る（特開昭５２−５２９１２号）。Conventionally, as a method for producing a high-strength carbon molded body, a method has been proposed in which a molded body is produced using carbon fibers as a binder with a thermosetting resin, pitch, etc., and then fired under pressure (Japanese Patent Application Laid-Open No. 1983-1993). -52912).
しかしながら、このような方法では焼成の途上で成形体
が形くずれし易く、また焼成時に生成するガスによって
製品中に気泡を含有し、十分な強度のものが得られない
という問題があった。However, this method has the problem that the molded product tends to lose its shape during firing, and the product contains bubbles due to the gas generated during firing, making it impossible to obtain a product with sufficient strength.
そこで本発明者は、このような従来技術における問題点
を解消するべく鋭意検討を重ねた結果、ピッチ粉体また
はピッチ繊維を適度に酸化処理し、次いで得られた酸化
ピッチを成形したのち焼成することにより、成形体の形
くずれがな（、しかも気泡の生成を抑制しうろことを見
出し、この知見に基いて本発明を完成した。Therefore, as a result of intensive studies to solve the problems in the conventional technology, the inventor of the present invention has developed a method in which pitch powder or pitch fibers are appropriately oxidized, the resulting oxidized pitch is molded, and then fired. As a result, the inventors discovered that the molded body retains its shape (and suppresses the formation of bubbles), and has completed the present invention based on this knowledge.
すなわち本発明は、第１にピッチ粉体またはピッチ繊維
を酸化処理し、次いで得られた酸化ピッチを成形し、得
られた成形体を焼成することを特徴とする炭素成形体の
製造法を提供するものであるゆ
また本発明は、第２にピッチ粉体またはピッチ蕪雑を酸
化処理し、次いで得られた酸化ピッチに炭素繊維または
不融化ピッチ繊維を配合した後成形し、得られた成形体
を焼成することを特徴とする炭素成形体の製造法を提供
するものである。That is, the present invention provides a method for producing a carbon molded body, which is characterized by first oxidizing pitch powder or pitch fibers, then molding the obtained oxidized pitch, and firing the obtained molded body. Second, pitch powder or pitch waste is oxidized, and then carbon fibers or infusible pitch fibers are blended with the obtained oxidized pitch, and then molded. The present invention provides a method for producing a carbon molded body, which is characterized by firing the body.
本発明において原料として用いるピッチとしては石油系
ピッチあるいは石炭系ピッチのいずれであってもよい。The pitch used as a raw material in the present invention may be either petroleum pitch or coal pitch.
ピッチの軟化点は２５０〜３８０℃のものが好ましく、
場合によっては光学的異方性相の含を量が８０％以上、
もしくは実質的に１００％のメソ相ピッチが用いられる
。The softening point of the pitch is preferably 250 to 380°C,
In some cases, the content of the optically anisotropic phase is 80% or more,
Alternatively, substantially 100% mesophase pitch is used.
本発明においては、このようなピッチを直径５０〜５０
０μ、好ましくは１００〜３００μに粉砕して得られる
ピッチ粉体、またはこのようなピッチを溶融紡糸して得
られる糸径５〜３０′μ、好ましくは１０〜２０μのピ
ッチ繊維を用いる。ここで溶融紡糸の条件は原料とする
ピッチの種類などにより異なり、一義的に決定すること
はできないが、一般的には従来行なわれている条件を採
用すればよい。具体的には、紡糸温度２５０〜４００℃
、好ましくは２６０〜３８０℃、紡糸速度１００〜１５
００ｍ／分、好ましくは２００〜１０００ｍ／分の条件
で行ないピッチ繊維を得る。In the present invention, such a pitch is set to a diameter of 50 to 50 mm.
Pitch powder obtained by grinding to 0μ, preferably 100 to 300μ, or pitch fibers obtained by melt spinning such pitch and having a thread diameter of 5 to 30'μ, preferably 10 to 20μ, is used. Here, the melt spinning conditions vary depending on the type of pitch used as a raw material and cannot be unambiguously determined, but generally conventional conditions may be employed. Specifically, the spinning temperature is 250 to 400°C.
, preferably 260-380°C, spinning speed 100-15
00 m/min, preferably 200 to 1000 m/min to obtain pitch fibers.
本発明においては、このようにして得られるピッチ粉体
またはピッチ繊維をまず酸化処理する。In the present invention, the pitch powder or pitch fiber thus obtained is first subjected to an oxidation treatment.
この酸゛比処理は通常、酸化性ガス雰囲気中において、
３００〜４００°Ｃ１好ましくは３２５〜３７５℃に昇
温し、ピッチ粉体またはピッチ繊維中の酸素含有量が３
〜５重量、好ましくは３．５〜４．５重量％となるよう
に行なう。昇温速度は１〜ｂ／分間、好ましくは１０〜
ｂ
よい。ここで酸化性ガスとしては酸素、オゾン。This acid ratio treatment is usually performed in an oxidizing gas atmosphere.
The temperature is raised to 300 to 400°C, preferably 325 to 375°C, and the oxygen content in the pitch powder or pitch fiber is 3.
-5% by weight, preferably 3.5-4.5% by weight. The heating rate is 1-b/min, preferably 10-b/min.
b Good. Here, the oxidizing gases are oxygen and ozone.
空気、窒素酸化物、亜硫酸ガス、塩酸あるいはこれらの
混合物等が挙げられる。また、酸化促進剤として無機酸
、例えば塩化水素、臭化水素、硫酸。Examples include air, nitrogen oxides, sulfur dioxide gas, hydrochloric acid, and mixtures thereof. Also, inorganic acids such as hydrogen chloride, hydrogen bromide, sulfuric acid as oxidation promoters.
硝酸など；金属塩化合物、例えば硝酸ナトリウム。Nitric acid, etc.; metal salt compounds, such as sodium nitrate.
硝酸カリウム、硫酸ナトリウム、硫酸カリウム。Potassium nitrate, sodium sulfate, potassium sulfate.
塩化アルミニウムなど；金属酸化物、例えば酸化ナトリ
ウム、酸化カリウム、過マンガン酸カリウムなど；アン
モニウム塩化合物、例えば硫酸アンモニウムなどを使用
してもよい。Aluminum chloride, etc.; metal oxides, such as sodium oxide, potassium oxide, potassium permanganate, etc.; ammonium salt compounds, such as ammonium sulfate, etc. may also be used.
このようにして酸化処理されたピッチ粉体またはピッチ
繊維は粉砕物の形で成形される。したがって、酸化ピッ
チ粉体はそのままでよいが、酸化ピッチ繊維は乳鉢など
ｊ；よりその全長を５０〜１０００μ、好ましくは５０
〜２００μの長さに粉砕しておく。The pitch powder or pitch fibers thus oxidized are molded into a pulverized product. Therefore, the oxidized pitch powder may be left as it is, but the oxidized pitch fibers may have a total length of 50 to 1000 μm, preferably 50 μm.
Grind to ~200μ length.
次いで、このようにして得られた酸化ピッチ粉砕物を所
望形状に成形する。ここで成形は通常、１００〜５００
ｋｇ／ｃｏｌＧの圧力で圧縮成形すルコとにより行な
われる。Next, the pulverized oxidized pitch product thus obtained is molded into a desired shape. Here, the molding is usually 100 to 500
This is done by compression molding at a pressure of kg/colG.
さらに、得られた成形体を焼成する。すなわち、得られ
た成形体を不活性ガス雰囲気中で８００〜１５００℃、
好ましくは１０００〜１２００℃に昇温して炭化する。Furthermore, the obtained molded body is fired. That is, the obtained molded body was heated at 800 to 1500°C in an inert gas atmosphere.
Preferably, the temperature is raised to 1000 to 1200°C to carbonize.
ここで不活性ガスとしては窒素ガス、ヘリウムガス、ア
ルゴンガスなどが挙げられる。なお、この焼成は真空下
で行ってもよい。Examples of the inert gas include nitrogen gas, helium gas, and argon gas. Note that this baking may be performed under vacuum.
さらに必要に応じ２０００〜２５００℃に加熱して黒鉛
化してもよい。Furthermore, if necessary, it may be graphitized by heating to 2000 to 2500°C.
このようにして本発明の第１の炭素成形体を製造するこ
とができる。In this way, the first carbon molded body of the present invention can be manufactured.
また、本発明の第２は上記の如くピッチ粉体またはピッ
チ繊維を酸化処理し、次いで得られた酸化ピッチ粉砕物
に、炭素繊維または不融化ピッチ繊維を配合した点に特
色を有するものである。Further, the second aspect of the present invention is characterized in that pitch powder or pitch fibers are oxidized as described above, and then carbon fibers or infusible pitch fibers are blended into the pulverized oxidized pitch product obtained. .
ここで炭素繊維としては特に制限はないが、例えば石油
系ピッチあるいは石炭系ピッチを溶融紡糸して得られる
ピッチ繊維を不融化処理、焼成処理して製造された糸径
５〜２０μのものを用いることができる。また、不融化
ピッチ繊維は炭素繊維を製造する際の不融化工程で得ら
れたものを用いることができる。ここで炭素繊維または
不融化ピッチ繊維は前記酸化ピッチ粉砕物１００重量部
に対し５〜５０重量部、好ましくは１０〜３０重量部の
割合で配合される。ここで炭素繊維または不融化ピッチ
繊維の配合量が上記割合に満たないと、十分な添加効果
を得ることができず、また炭素繊維または不融化ピッチ
繊維を上記割合を超えて配合すると、成形体内部の結合
力が弱く、機械的強度の高い成形体が得られない。There are no particular restrictions on the carbon fibers, but for example, pitch fibers obtained by melt-spinning petroleum-based pitch or coal-based pitch may be infusible and fired and have a diameter of 5 to 20 μm. be able to. Further, as the infusible pitch fiber, one obtained in an infusible step when manufacturing carbon fibers can be used. Here, the carbon fibers or infusible pitch fibers are blended in an amount of 5 to 50 parts by weight, preferably 10 to 30 parts by weight, based on 100 parts by weight of the oxidized pitch pulverized product. If the blending amount of carbon fiber or infusible pitch fiber is less than the above ratio, sufficient addition effect cannot be obtained, and if the blending amount of carbon fiber or infusible pitch fiber exceeds the above ratio, the molded product The internal bonding force is weak and a molded product with high mechanical strength cannot be obtained.
この炭素繊維または不融化ピッチ繊維の配合により、製
造される成形体の強度を一層向上させることが可能にな
る。By blending carbon fibers or infusible pitch fibers, it becomes possible to further improve the strength of the molded product produced.
本発明の第２においては、以後本発明の第１と同様に成
形し、得られた成形体を焼成すればよい。In the second aspect of the present invention, the molded body may be molded in the same manner as in the first aspect of the present invention, and the obtained molded body may be fired.
叙上の如き本発明の第１によれば形（ずれのない成形体
を得ることができる。しかも、成形体中に気泡がなく、
高密度かつ高強度の成形体を得ることができる。According to the first aspect of the present invention as described above, it is possible to obtain a molded product with no deviation in shape.Moreover, there are no air bubbles in the molded product,
A molded article with high density and high strength can be obtained.
さらに、本発明の第２によれば一層強度の向上した成形
体を得ることができる。Furthermore, according to the second aspect of the present invention, a molded article with further improved strength can be obtained.
したがって、本発明は機械部品、電気・電子機器部品な
どの製造に有効に利用することができる。Therefore, the present invention can be effectively used in manufacturing mechanical parts, electrical/electronic equipment parts, and the like.
実施例１
軟化点２８０℃の石油系ピッチを溶融紡糸して糸径１０
μのピッチ繊維を得た。このピッチ繊維を空気中におい
て室温から３５０℃まで２０℃／分間の昇温速度で加熱
し、酸化ピッチ繊維を得た。Example 1 Petroleum-based pitch with a softening point of 280°C was melt-spun to a yarn diameter of 10
μ pitch fibers were obtained. This pitch fiber was heated in air from room temperature to 350°C at a heating rate of 20°C/min to obtain oxidized pitch fiber.
この酸化ピッチ繊維中の酸素含有量は４．０重量％であ
った。次に、この酸化ピッチ繊維を乳鉢にて粉砕し、得
られた粉砕物を４００ ｋｇ／ｃｕｌＧの圧力で圧縮成
形し、直径１２龍、肉厚２龍の円板を得た。この円板を
窒素ガス雰囲気中において、１０’Ｃ／分間の昇温速度
で１０００℃に加熱し、焼成した。この結果、形くずれ
のない密度１．７５ ｇ ／ｍｌ（原料ピッチの密度１
．３１ ｇ ／ｍｌ１−）の高密度炭素成形体を得た。The oxygen content in this oxidized pitch fiber was 4.0% by weight. Next, this oxidized pitch fiber was crushed in a mortar, and the resulting crushed product was compression-molded at a pressure of 400 kg/culG to obtain a disc with a diameter of 12 mm and a wall thickness of 2 mm. This disk was heated to 1000°C at a temperature increase rate of 10'C/min in a nitrogen gas atmosphere and fired. As a result, the density was 1.75 g/ml without deformation (density of raw material pitch 1
．． A high-density carbon molded body of 31 g/ml1-) was obtained.
実施例２
軟化点２８０℃の石油系ピッチを直径１００μ以下に粉
砕し、得られたピッチ粉末を空気流通下に、室温から３
５０℃まで１０℃／分間の昇温速度で加熱することによ
り酸素含有量３．８重量％の酸化ピッチ粉末を得た。得
られた酸化ピッチ粉末を４００ ｋｇ／ｃｎ！Ｇの圧力
で圧縮成形し、直径１２龍、肉厚２１ｍの円板を得た。Example 2 Petroleum-based pitch with a softening point of 280°C was ground to a diameter of 100 μm or less, and the resulting pitch powder was heated from room temperature to 3°C under air circulation.
Pitch oxide powder having an oxygen content of 3.8% by weight was obtained by heating to 50°C at a temperature increase rate of 10°C/min. The obtained oxidized pitch powder is 400 kg/cn! Compression molding was performed at a pressure of G to obtain a disc with a diameter of 12 mm and a wall thickness of 21 m.
この円板を窒素ガス雰囲気中で１０℃／分間の昇温速度
で１０００℃まで加熱し焼成した。この結果、形くずれ
のない密度１．７４ ｇ／ＩＩＩｊ！の高密度炭素成形
体を得た。This disk was fired by heating to 1000° C. at a heating rate of 10° C./min in a nitrogen gas atmosphere. As a result, the density is 1.74 g/IIIj without deformation! A high-density carbon molded body was obtained.
比較例１
軟化点２８０℃の石油系ピッチを直径１００μ以下に粉
砕して得たピッチ粉末を４００ ｋＨ／ｃｍ” Ｇの圧
力で圧縮成形し、直径１２ｍｍ、肉厚２１１１の円板を
得た。この円板を１０°Ｃ／分間の昇温速度で４００°
Ｃまで加熱して表面を酸化した。次いで、この円板を窒
素ガス雰囲気中において１０℃／分間の昇温速度で１０
００℃まで加熱し、焼成した。Comparative Example 1 Pitch powder obtained by pulverizing petroleum pitch with a softening point of 280° C. to a diameter of 100 μm or less was compression molded at a pressure of 400 kH/cm”G to obtain a disc with a diameter of 12 mm and a wall thickness of 2111 mm. This disk was heated to 400° at a heating rate of 10°C/min.
The surface was oxidized by heating to C. Next, this disk was heated in a nitrogen gas atmosphere at a heating rate of 10°C/min for 10
It was heated to 00°C and fired.
この結果、円板は形くずれするとともに発泡し、成形体
としてのかさ密度の測定は不可能であった。As a result, the disc lost its shape and foamed, making it impossible to measure the bulk density of the molded product.
実施例３
実施例１における酸化ピッチ繊維粉砕物１００重量部に
対して炭素繊維５０重量部を配合した混合物を４００
ｋｇ／ｃｍ” Ｇの圧力において直径１２酊、肉厚２關
の円板に圧縮成形し、窒素雰囲気中において、１０℃／
分間の昇温速度で１０００ ”Ｃまで加熱し焼成した。Example 3 A mixture of 50 parts by weight of carbon fibers and 100 parts by weight of the pulverized oxidized pitch fibers in Example 1 was mixed into 400 parts by weight.
It was compression molded into a disc with a diameter of 12 mm and a wall thickness of 2 mm at a pressure of 10 kg/cm"G, and then heated at 10 °C/cm in a nitrogen atmosphere.
It was fired by heating to 1000''C at a heating rate of 1 minute.
この結果、形くずれのない密度１．７６ｇ／＋＋／！の
高密度炭素成形体を得た。As a result, the density is 1.76g/++/ without deformation! A high-density carbon molded body was obtained.
実施例４
実施例２における酸化ピッチ粉末１００重量部に対して
炭素繊維５０重量部を配合した混合物を４００ ｋｇ／
ｃ＋ｎｔＱの圧力において直径１２ｍｍ、肉厚２龍の円
板に圧縮成形した。得られた円板を窒素ガス雰囲気中に
おいて１０°Ｃ／分間の昇温速度で加熱し、１０００℃
で焼成した。この結果、形くずれのない密度１．７５ｇ
／ｍＪの高密度炭素成形体を得た。Example 4 A mixture of 100 parts by weight of oxidized pitch powder in Example 2 and 50 parts by weight of carbon fiber was mixed at 400 kg/
It was compression molded into a disc with a diameter of 12 mm and a wall thickness of 2 mm at a pressure of c+ntQ. The obtained disk was heated at a heating rate of 10°C/min in a nitrogen gas atmosphere to 1000°C.
It was fired in As a result, the density is 1.75g without deformation.
/mJ of high-density carbon molded body was obtained.
比較例２
軟化点２８０℃の石油系ピッチを直径１００μ以下に粉
砕して得たピッチ粉末１００重量部に対して炭素繊維５
０重量部を配合した混合物を４００ｋｇ ／ ｃｍ ２
Ｇの圧力で圧縮成形し、直径１２ｍｍ、肉厚２龍の円
板を得た。得られた円板を窒素ガス雰囲気中において１
０°Ｃ／分間の昇温速度で１０００℃まで加熱し、焼成
した。この結果、円板は形くずれし、発泡したため成形
体としてのかさ密度は測定できなかった。Comparative Example 2 5 parts by weight of carbon fiber per 100 parts by weight of pitch powder obtained by crushing petroleum pitch with a softening point of 280°C to a diameter of 100 μm or less
400kg/cm2 of the mixture containing 0 parts by weight
Compression molding was performed at a pressure of G to obtain a disc with a diameter of 12 mm and a wall thickness of 2 mm. The obtained disk was placed in a nitrogen gas atmosphere for 1
It was heated to 1000°C at a temperature increase rate of 0°C/min and fired. As a result, the disk lost its shape and foamed, so that the bulk density of the molded product could not be measured.
Claims (5)
で得られた酸化ピッチを成形し、得られた成形体を焼成
することを特徴とする炭素成形体の製造法。(1) A method for producing a carbon molded body, which comprises oxidizing pitch powder or pitch fibers, then molding the obtained oxidized pitch, and firing the resulting molded body.
素含有量が３〜５重量％となるように行なう特許請求の
範囲第１項記載の製造法。(2) The manufacturing method according to claim 1, wherein the oxidation treatment is performed such that the oxygen content in the pitch powder or pitch fiber is 3 to 5% by weight.
で得られた酸化ピッチに炭素繊維または不融化ピッチ繊
維を配合した後成形し、得られた成形体を焼成すること
を特徴とする炭素成形体の製造法。(3) Carbon molding characterized by oxidizing pitch powder or pitch fibers, then blending carbon fibers or infusible pitch fibers into the resulting oxidized pitch, and then molding, and firing the resulting molded product. How the body is manufactured.
素含有量が３〜５重量％となるように行なう特許請求の
範囲第３項記載の製造法。(4) The manufacturing method according to claim 3, wherein the oxidation treatment is performed such that the oxygen content in the pitch powder or pitch fiber is 3 to 5% by weight.
５０重量部配合してなる特許請求の範囲第３項記載の製
造法。(5) 5 to 5 parts of carbon fiber per 100 parts by weight of oxidized pitch
50 parts by weight of the manufacturing method according to claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59231297A JPS61111963A (en) | 1984-11-05 | 1984-11-05 | Manufacture of carbon formed body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59231297A JPS61111963A (en) | 1984-11-05 | 1984-11-05 | Manufacture of carbon formed body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61111963A true JPS61111963A (en) | 1986-05-30 |
| JPH0227302B2 JPH0227302B2 (en) | 1990-06-15 |
Family
ID=16921402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59231297A Granted JPS61111963A (en) | 1984-11-05 | 1984-11-05 | Manufacture of carbon formed body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61111963A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63248770A (en) * | 1987-04-03 | 1988-10-17 | 日石三菱株式会社 | Manufacture of carbon/carbon composite material |
| EP0307968A2 (en) * | 1987-09-22 | 1989-03-22 | Petoca Ltd. | Process for producing high strength carbon-carbon composite |
| JPH01221557A (en) * | 1988-02-26 | 1989-09-05 | Petoka:Kk | Production of carbon fiber nonwoven cloth |
| JPH02275759A (en) * | 1989-01-17 | 1990-11-09 | Toyota Motor Corp | Sliding part material |
| JPH03237062A (en) * | 1989-06-22 | 1991-10-22 | Toyota Motor Corp | Sliding member |
| JPH0477359A (en) * | 1990-07-17 | 1992-03-11 | Toyota Motor Corp | Carbon fiber reinforced carbon sintered body |
| WO2010084709A1 (en) * | 2009-01-21 | 2010-07-29 | 株式会社クレハ | Method for producing negative electrode material for nonaqueous electrolyte secondary battery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4924348A (en) * | 1972-06-27 | 1974-03-04 | ||
| JPS50106895A (en) * | 1974-01-31 | 1975-08-22 | ||
| JPS5176A (en) * | 1974-06-11 | 1976-01-05 | Klemm Guenter Ing Fa | |
| JPS5112474A (en) * | 1974-07-22 | 1976-01-31 | Shunzo Tachikawa | Rooraanaisono jidokao kanonishita harijobearinguno kumitatesochi |
-
1984
- 1984-11-05 JP JP59231297A patent/JPS61111963A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4924348A (en) * | 1972-06-27 | 1974-03-04 | ||
| JPS50106895A (en) * | 1974-01-31 | 1975-08-22 | ||
| JPS5176A (en) * | 1974-06-11 | 1976-01-05 | Klemm Guenter Ing Fa | |
| JPS5112474A (en) * | 1974-07-22 | 1976-01-31 | Shunzo Tachikawa | Rooraanaisono jidokao kanonishita harijobearinguno kumitatesochi |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63248770A (en) * | 1987-04-03 | 1988-10-17 | 日石三菱株式会社 | Manufacture of carbon/carbon composite material |
| JPH0569061B2 (en) * | 1987-04-03 | 1993-09-30 | Nippon Oil Co Ltd | |
| EP0307968A2 (en) * | 1987-09-22 | 1989-03-22 | Petoca Ltd. | Process for producing high strength carbon-carbon composite |
| JPH01221557A (en) * | 1988-02-26 | 1989-09-05 | Petoka:Kk | Production of carbon fiber nonwoven cloth |
| JPH02275759A (en) * | 1989-01-17 | 1990-11-09 | Toyota Motor Corp | Sliding part material |
| JPH03237062A (en) * | 1989-06-22 | 1991-10-22 | Toyota Motor Corp | Sliding member |
| JPH0477359A (en) * | 1990-07-17 | 1992-03-11 | Toyota Motor Corp | Carbon fiber reinforced carbon sintered body |
| WO2010084709A1 (en) * | 2009-01-21 | 2010-07-29 | 株式会社クレハ | Method for producing negative electrode material for nonaqueous electrolyte secondary battery |
| KR101418634B1 (en) * | 2009-01-21 | 2014-07-14 | 가부시끼가이샤 구레하 | Method for producing negative electrode material for nonaqueous electrolyte secondary battery |
| JP5566914B2 (en) * | 2009-01-21 | 2014-08-06 | 株式会社クレハ | Method for producing negative electrode material for non-aqueous electrolyte secondary battery |
| US8945445B2 (en) | 2009-01-21 | 2015-02-03 | Kureha Corporation | Method of producing anode material for non-aqueous electrolyte secondary battery |
| EP2381517A4 (en) * | 2009-01-21 | 2015-08-19 | Kureha Corp | Method for producing negative electrode material for nonaqueous electrolyte secondary battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0227302B2 (en) | 1990-06-15 |
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