JP2001226855A - Woven fabric of pitch-based carbon fiber - Google Patents
Woven fabric of pitch-based carbon fiberInfo
- Publication number
- JP2001226855A JP2001226855A JP2000033073A JP2000033073A JP2001226855A JP 2001226855 A JP2001226855 A JP 2001226855A JP 2000033073 A JP2000033073 A JP 2000033073A JP 2000033073 A JP2000033073 A JP 2000033073A JP 2001226855 A JP2001226855 A JP 2001226855A
- Authority
- JP
- Japan
- Prior art keywords
- carbon fiber
- pitch
- woven fabric
- based carbon
- tow
- 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
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、複合材料として優
れた機能を有するピッチ系炭素繊維織物に関する。The present invention relates to a pitch-based carbon fiber woven fabric having excellent functions as a composite material.
【０００２】[0002]
【従来の技術】現在、炭素繊維はポリアクリロニトリル
（ＰＡＮ）を原料とするＰＡＮ系炭素繊維とピッチ類を
原料とするピッチ系炭素繊維が製造されているが、この
うち、ピッチ系炭素繊維は特に高弾性であるという特徴
を有し、より広範な用途が期待されている。かかるピッ
チ系炭素繊維はスポーツ、レジャー用品から宇宙航空用
途種々の構造材料として利用されつつある。この場合、
炭素繊維は、トウを製織して得た織物に熱硬化性樹脂を
含浸させてシート状に加工したプリプレグと呼ばれる中
間体とし、このプリプレグを成型、硬化させた炭素繊維
強化樹脂複合材（以下「ＣＦＲＰ」という）、あるい
は、このプリプレグをピッチや熱硬化性樹脂に含浸させ
て焼成、緻密化させた炭素繊維強化炭素複合材（以下
「Ｃ／Ｃ」という）などの複合材として用いることが一
般的である。2. Description of the Related Art At present, PAN-based carbon fibers using polyacrylonitrile (PAN) as a raw material and pitch-based carbon fibers using pitches as a raw material are manufactured. It has the feature of high elasticity and is expected to be used in a wider range of applications. Such pitch-based carbon fibers are being used as various structural materials from sports and leisure goods to aerospace applications. in this case,
The carbon fiber is a carbon fiber reinforced resin composite material (hereinafter referred to as “prepreg” formed by impregnating a woven fabric obtained by weaving a tow with a thermosetting resin and processing the resulting prepreg into a sheet shape. CFRP)) or a composite material such as a carbon fiber reinforced carbon composite material (hereinafter referred to as "C / C") obtained by impregnating the prepreg with pitch or thermosetting resin, firing and densifying the prepreg. It is a target.
【０００３】これらの炭素繊維からなる複合材の使用範
囲を更に拡大させるためには、複合化の技術改良の他
に、炭素繊維や炭素繊維織物等の中間基材の性能改良や
コストダウンが大きな課題である。まず、炭素繊維は、
炭素繊維トウの繊度を大きくすることにより、コストを
下げることができる。即ち、繊維径を太くしたり、フィ
ラメント数を多くすることにより繊度が大きくなり、紡
糸工程や焼成工程での生産性が向上し、安価な炭素繊維
トウを製造することが可能となる。しかしながら、太い
炭素繊維トウを使用した炭素繊維織物は、一般的に、織
物のＦＡＷ（Ｆｉｂｅｒ Ａｒｅａ Ｗｅｉｇｈｔ：織
物の単位面積当たりの重さ）や厚みが大きく、プリプレ
グを成型するときの樹脂含浸性が悪くなり、それを用い
て得られる複合材における樹脂のボイドが多くなり、高
い強度特性があまり期待できない。一方、太い炭素繊維
トウを使用したＦＡＷの小さい炭素繊維織物では、炭素
繊維トウの間に形成される空隙が大きくなるので、これ
を用いて得られる複合材の炭素繊維の含有率は低くな
り、また、炭素繊維トウの間に形成される空隙部分に樹
脂のボイドが集中的に発生するという問題がある。[0003] In order to further expand the range of use of these carbon fiber composite materials, in addition to the improvement of composite technology, the performance improvement and cost reduction of intermediate substrates such as carbon fibers and carbon fiber fabrics are significant. It is an issue. First, carbon fiber
The cost can be reduced by increasing the fineness of the carbon fiber tow. That is, by increasing the fiber diameter or increasing the number of filaments, the fineness is increased, the productivity in the spinning step or the firing step is improved, and an inexpensive carbon fiber tow can be manufactured. However, a carbon fiber woven fabric using a thick carbon fiber tow generally has a large FAW (Fiber Area Weight: weight per unit area of the woven fabric) and a large thickness, and the resin impregnating property when molding a prepreg is large. As a result, the composite material obtained by using the resin material has many voids, and high strength characteristics cannot be expected. On the other hand, in a carbon fiber woven fabric having a small FAW using a thick carbon fiber tow, the voids formed between the carbon fiber tows become large, so that the carbon fiber content of the composite material obtained by using the carbon fiber tow becomes low, In addition, there is a problem that voids of the resin are intensively generated in voids formed between the carbon fiber tows.
【０００４】[0004]
【発明が解決しようとする課題】従って、太い炭素繊維
トウを使用して、空隙が少なく均一で、且つ、薄い厚さ
のＦＡＷの小さな炭素繊維織物が理想的である。そのた
めには、太い炭素繊維トウを開繊して糸幅を広くして製
織する必要があるが、ピッチ系の炭素繊維では、高弾性
であるという特徴のため繊維が折れやすく、トウを十分
に開繊することが難しい。また、開繊できても、その炭
素繊維を用いて製織すると、目開き割合がなお大きかっ
たり、製織時の屈曲、摩擦等により生じた単繊維の破
断、毛羽等により欠陥を生じ、該織物を複合材に適用し
た場合に、ピッチ系炭素繊維の本来の機械的特性を十分
に発現できなかった。Therefore, it is ideal to use a carbon fiber tow having a small FAV and a small thickness using a thick carbon fiber tow. For this purpose, it is necessary to open a thick carbon fiber tow and widen the yarn width for weaving.However, in the pitch-based carbon fiber, the fiber is easily broken due to its characteristic of high elasticity, and the tow is sufficiently removed. Difficult to open. Also, even if the fiber can be opened, when weaving using the carbon fiber, the opening ratio is still large, bending during weaving, breakage of a single fiber caused by friction, etc., defects due to fluff, etc. When applied to a composite material, the original mechanical properties of the pitch-based carbon fiber could not be sufficiently exhibited.
【０００５】[0005]
【課題を解決するための手段】そこで、本発明者等は、
高弾性のピッチ系炭素繊維トウを用いて目開きの小さ
な、欠陥のない優れた性能の織物を得る方法について鋭
意検討を行った。その結果、炭素繊維トウを製造する段
階で、糸道や、糸の通るバーの表面状態を改良し、糸に
できるだけダメージを与えないようにして、開繊しても
繊維の機械的強度を十分に発揮できる炭素繊維トウを
得、その炭素繊維トウを更に開繊し、製織することによ
り目開きの小さい、欠陥の無い織物を得られることを見
いだした。更に、この織物を用いて、欠陥が少なく、十
分な強度を有し、且つ、薄物のＣＦＲＰ、Ｃ／Ｃなどの
複合材が得られることを見い出した。即ち、本発明は、
ＦＡＷが５０〜５００ｇ／ｍ2 、目開き割合が１０％以
下であることを特徴とするピッチ系炭素繊維織物、及び
それを複合材に関する。Means for Solving the Problems Accordingly, the present inventors have
A method for obtaining a fabric having excellent performance without defects and small openings by using a high-elasticity pitch-based carbon fiber tow was studied diligently. As a result, at the stage of manufacturing the carbon fiber tow, the yarn path and the surface condition of the bar through which the yarn passes are improved so that the yarn is not damaged as much as possible. It has been found that a woven fabric having a small opening and having no defect can be obtained by further opening and weaving the carbon fiber tow which can be exhibited in the above. Furthermore, using this woven fabric, it has been found that a composite material such as CFRP and C / C having a small number of defects and having sufficient strength can be obtained. That is, the present invention
The present invention relates to a pitch-based carbon fiber woven fabric having a FAW of 50 to 500 g / m 2 and an opening ratio of 10% or less, and a composite material thereof.
【０００６】[0006]
【発明の実施の形態】以下、本発明を詳細に説明する。
本発明のピッチ系炭素繊維織物を構成するピッチ系炭素
繊維は一般に以下のような方法で製造する。炭素繊維を
得るための紡糸ピッチを得るための炭素質原料として
は、例えば、石炭系のコールタール、コールタールピッ
チ、石炭液化物、石炭液化物、石油系の重質油、ター
ル、ピッチ又はナフタレンやアントラセンの触媒反応に
よる重合反応生成物等が挙げられるが、光学的異方性組
織の割合がより高い紡糸ピッチが望ましい。かかる紡糸
ピッチから、フィラメント数が、通常８０００〜２００
００、好ましくは８５００〜１８０００、特に好ましく
は９０００〜１６０００のピッチ繊維トウを得る。この
炭素繊維トウを製造する上では、一度に製造できるトウ
の本数が限られていることから、８０００フィラメント
よりも少ないと、生産できる量が少なくなり、コスト的
に不利となり、一方、２００００フィラメントを越える
ような炭素繊維トウからＦＡＷの小さな織物を製造する
場合は、元のトウも太いため、開繊によりさらに太くな
り、取り扱いにくくなる。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
The pitch-based carbon fiber constituting the pitch-based carbon fiber fabric of the present invention is generally produced by the following method. As a carbonaceous raw material for obtaining a spinning pitch for obtaining carbon fibers, for example, coal-based coal tar, coal tar pitch, coal liquefaction, coal liquefaction, petroleum heavy oil, tar, pitch or naphthalene And a polymerization reaction product by a catalytic reaction of anthracene. A spinning pitch having a higher ratio of an optically anisotropic structure is desirable. From such a spinning pitch, the number of filaments is usually 8000 to 200
A pitch fiber tow of 00, preferably 8500 to 18000, particularly preferably 9000 to 16000 is obtained. In producing this carbon fiber tow, since the number of tows that can be produced at one time is limited, if the number is less than 8000 filaments, the amount that can be produced decreases and the cost becomes disadvantageous. When fabricating a small FAW woven fabric from a carbon fiber tow that is too large, the original tow is also thick, so it becomes even thicker by opening and becomes difficult to handle.
【０００７】次に、このピッチ繊維トウは、を酸化性ガ
ス雰囲気中で通常３００〜４００℃で加熱処理すること
により、不融化繊維トウを得る。更に、この不融化繊維
トウを窒素、アルゴン等の不活性ガス雰囲気中、通常２
０００〜３０００℃で炭化、黒鉛化し、通常の方法で表
面処理したのち、サイジング剤を繊維に対し、通常０．
２〜１０重量％、好ましくは０．５〜７重量％添着し、
炭素繊維トウを得る。サイジング剤としては通常用いら
れる任意のものが使用でき、具体的には、エポキシ化合
物、水溶性ポリアミド化合物、飽和又は不飽和ポリエス
テル、酢酸ビニル等が挙げられる。Next, the pitch fiber tow is heat-treated in an oxidizing gas atmosphere usually at 300 to 400 ° C. to obtain an infusible fiber tow. Further, the infusibilized fiber tow is usually placed in an atmosphere of an inert gas such as nitrogen, argon, or the like.
After carbonizing and graphitizing at 000 to 3000 ° C. and surface-treating by a usual method, a sizing agent is added to the fiber in an amount of usually 0.1 to 0.1%.
2 to 10% by weight, preferably 0.5 to 7% by weight,
Obtain carbon fiber tow. Any commonly used sizing agent can be used, and specific examples include an epoxy compound, a water-soluble polyamide compound, a saturated or unsaturated polyester, and vinyl acetate.
【０００８】また、上記における不融化、炭化・黒鉛化
等の各工程においては通糸を行なわれるが、繊維は脆弱
で折り曲げに対して弱く破損し易く、また、繊維トウが
損傷し、ケバや糸切れが生じる問題がある。そこで、本
発明で用いる炭素繊維を製造する場合は、従来からの製
造工程をそのまま実施するのではなく、できるだけ、糸
を折り曲げたり、糸が装置あるいは糸同士でこすれたり
しないようにし、また、やむを得ず糸の向きを変えるた
め糸を曲げるときにおいても使用するバーやコムは梨地
処理等により表面状態を調整し、できるだけ糸にダメー
ジを与えないようにすることが必要となる。In each of the above-mentioned steps of infusibilization, carbonization and graphitization, threading is performed. However, the fibers are fragile and are easily damaged by bending, and the fiber tow is damaged, and the fiber tow is damaged. There is a problem that yarn breakage occurs. Therefore, when manufacturing the carbon fiber used in the present invention, instead of performing the conventional manufacturing process as it is, as much as possible, bend the yarn, and try not to rub the yarn between devices or yarns, and inevitably It is necessary to adjust the surface condition of the bar or comb used for bending the yarn in order to change the direction of the yarn by performing a satin finish or the like so as not to damage the yarn as much as possible.
【０００９】なお、炭素繊維の製造に使用されるバー
は、通常、Ｖ溝やＵ溝のない平型の円筒形状を有するも
のであるが、本発明で用いる炭素繊維を製造する場合
は、特に、表面が梨地状であって、表面粗度Ｒmax が１
〜１０μｍ程度のものが好ましい。これにより、繊維ト
ウとバーとの接触面積がある程度小さくなり摩擦係数が
小さくなるため、接触張力を低減することができる。従
来、バーの表面仕上げ方法としては、梨地仕上げのほか
に鏡面仕上げが一般的であるが、鏡面仕上げの場合は糸
束との接触面積が増大して摩擦係数が大きくなるためあ
まり好ましくない。The bar used for the production of carbon fibers usually has a flat cylindrical shape without V-grooves or U-grooves. The surface is satin-like and the surface roughness Rmax is 1
Those having a diameter of about 10 to 10 μm are preferred. Thereby, the contact area between the fiber tow and the bar is reduced to some extent and the friction coefficient is reduced, so that the contact tension can be reduced. Conventionally, as a surface finishing method of a bar, mirror finishing is generally used in addition to matte finishing. However, mirror finishing is not preferable because the contact area with the yarn bundle increases and the friction coefficient increases.
【００１０】このようにして得られた炭素繊維トウの繊
度は、通常１．０〜３．０ｇ／ｍ、好ましくは１．１〜
２．７ｇ／ｍである。フィラメント数と同じで、１．０
ｇ／ｍより小さいとコスト的に不利となり、３．０ｇ／
ｍより大きいと、トウが太くなるため、開繊によりさら
に太くなり、取り扱いにくくなる。また、この炭素繊維
トウを常法により開繊することで、糸幅を通常１０〜４
０ｍｍ、好ましくは１６〜４０ｍｍ、特に好ましくは２
０〜４０ｍｍに調製する。この開繊の際も、できるだけ
繊維にダメージを与えないようにするために前記のよう
なに梨地仕上げした開繊バーを使用するのが望ましい。
更に、開繊した炭素繊維トウを 通常、炭素繊維を製織
する際に使用することができる織機、例えばシャトル織
機やレピア織機等を使用して製織し、平織あるいは朱子
織の織物とする。[0010] The fineness of the carbon fiber tow thus obtained is usually 1.0 to 3.0 g / m, preferably 1.1 to 3.0 g / m.
2.7 g / m. Same as the number of filaments, 1.0
If it is less than g / m, it is disadvantageous in terms of cost, and 3.0 g / m
If it is larger than m, the tow becomes thicker, so that it becomes further thicker by fiber opening and becomes difficult to handle. Further, by opening the carbon fiber tow by a conventional method, the yarn width is usually set to 10 to 4 times.
0 mm, preferably 16 to 40 mm, particularly preferably 2 mm
Adjust to 0 to 40 mm. At the time of this fiber opening, it is preferable to use a fiber-finished fiber-opening bar as described above in order to minimize damage to the fibers.
Further, the opened carbon fiber tow is usually woven using a loom that can be used for weaving carbon fibers, for example, a shuttle loom, a rapier loom, or the like, to obtain a plain weave or satin weave.
【００１１】以上のようにして得られた本発明のピッチ
系炭素繊維織物は、ＦＡＷが５０〜５００ｇ／ｍ2 、好
ましくは８０〜４００ｇ／ｍ2 、特に好ましくは１００
〜３００ｇ／ｍ2 であり、目開き割合が１０％以下、好
ましくは５％以下、特に好ましくは３％以下である。な
お、ここでの織物の目開き割合とは、織物を該織物の平
面に対して垂直方向から見たときの、製織した炭素繊維
トウのトウとトウとの隙間で、経方向の隙間と緯方向の
隙間の重なった部分の割合である。The pitch-based carbon fiber fabric of the present invention obtained as described above has a FAW of 50 to 500 g / m 2 , preferably 80 to 400 g / m 2 , particularly preferably 100 to 400 g / m 2 .
To 300 g / m 2 , and the opening ratio is 10% or less, preferably 5% or less, and particularly preferably 3% or less. Here, the opening ratio of the woven fabric is the gap between the tow of the woven carbon fiber tow when the woven fabric is viewed from the direction perpendicular to the plane of the woven fabric, the gap in the warp direction and the weft. It is the ratio of the overlapping portion of the gap in the direction.
【００１２】[0012]
【実施例】以下、本発明を実施例により更に詳細に説明
するが、その要旨を越えない限り以下の実施例により限
定されるものでない。なお、実施例での織物の目開き割
合の測定は、（株）ニコン製ＬＵＺＥＸ２Ｄにより画像
処理を行って求めた。具体的には、目開き割合を測定し
ようとする織物の画像を取り込み、織物のある一定の面
積に対する、目の開いている部分の面積の割合を求め
る。織物の画像を取り込んだ際、目の詰まっている部分
と、目の開いている部分の色調が異なっているため、容
易に割合を求めることができる。EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples, but it should not be construed that the present invention is limited thereto without departing from the scope of the invention. In addition, the measurement of the opening ratio of the woven fabric in the examples was obtained by performing image processing with LUZEX2D manufactured by Nikon Corporation. More specifically, an image of the woven fabric whose opening ratio is to be measured is taken in, and the ratio of the area of the open portion to a certain fixed area of the woven fabric is obtained. When the image of the woven fabric is captured, since the color tone of the portion where the eyes are closed is different from that of the portion where the eyes are open, the ratio can be easily obtained.
【００１３】実施例１ コールタールピッチより、軟化点３００℃、且つ偏向顕
微鏡下１００倍で観察した光学的異方性割合が１００％
の紡糸ピッチを調整した。該ピッチを、口金温度３３５
℃で溶融紡糸し、得られたフィラメント数１２０００の
ピッチ繊維トウを得た。該ピッチ繊維トウを３８５℃で
空気中で加熱処理することにより不融化繊維トウを得
た。更に、該不融化繊維を梨地処理したガイドバー及び
コムに通しながら２１００℃で黒鉛化し表面処理した
後、エポキシ系のサイジング剤を２％添着し、炭素繊維
トウを得た。かくして得られた炭素繊維トウ繊度は２．
０ｇ／ｍ、糸幅７ｍｍであった。Example 1 From the coal tar pitch, a softening point of 300 ° C. and an optical anisotropy ratio of 100% as observed under a polarizing microscope at 100 × are 100%.
Was adjusted. The pitch is adjusted to a die temperature of 335.
Then, the fiber was melt-spun at a temperature of 0 ° C. to obtain a pitch fiber tow having 12,000 filaments. The pitch fiber tow was heated at 385 ° C. in the air to obtain an infusible fiber tow. Further, the infusibilized fiber was graphitized at 2100 ° C. while passing through a matte-treated guide bar and a comb, and surface-treated, and then an epoxy-based sizing agent was impregnated at 2% to obtain a carbon fiber tow. The carbon fiber tow fineness thus obtained is 2.
0 g / m and a yarn width of 7 mm.
【００１４】該炭素繊維トウを梨地処理した開繊バーを
用いて、糸幅２０ｍｍになるよう開繊した炭素繊維トウ
をレピア織機にて製織した結果得られた平織の炭素繊維
織物はＦＡＷ２００ｇ／ｍ2 、目開き割合２％と欠陥の
ないものであった。この炭素繊維織物にエポキシ樹脂を
含浸してプリプレグを作成した後、積層し、１２０℃で
２時間熱処理をして成形してＣＦＲＰを製造したとこ
ろ、欠陥がなく、引張強度が約４０ｋｇ／ｍｍ2と充分
な強度を有したＣＦＲＰが製造できた。また、この炭素
繊維織物にフェノール樹脂を含浸してプリプレグを作成
した後、成型し、成型体を得た。この成型体を２０００
℃で焼成した後、ピッチを含浸し、９００℃で１時間焼
成する緻密化工程を７回繰り返した。これを２０００℃
で焼成することによりＣ／Ｃを製造したところ、大きな
ボイドを有することのなく、また、良好な強度を有した
Ｃ／Ｃが得られた。A carbon fiber tow obtained by weaving a carbon fiber tow having a yarn width of 20 mm with a rapier loom using a fiber-opening bar in which the carbon fiber tow is matted is FAW 200 g / m2. 2. The opening ratio was 2%, and there was no defect. This carbon fiber fabric was impregnated with an epoxy resin to form a prepreg, laminated, heat-treated at 120 ° C. for 2 hours and molded to produce CFRP, which had no defects and a tensile strength of about 40 kg / mm 2. Thus, CFRP having sufficient strength could be produced. A prepreg was prepared by impregnating the carbon fiber fabric with a phenol resin, and then molded to obtain a molded body. 2000
After firing at ℃, the pitch was impregnated and the densification step of firing at 900 ° C for 1 hour was repeated seven times. 2000 ℃
When C / C was manufactured by baking, C / C having no large voids and having good strength was obtained.
【００１５】比較例１ 実施例１と同じ炭素繊維トウを開繊せずに製織し、ＦＡ
Ｗ２００ｇ／ｍ2 、目開き割合５０％の平織りの織物を
得た。この炭素繊維織物を用いてＣＦＲＰを製造した
が、大きな空隙ができ、また、実施例１のＣＦＲＰの４
分の１程度の引張強度であった。Comparative Example 1 The same carbon fiber tow as in Example 1 was woven without opening, and
A plain woven fabric having a W of 200 g / m 2 and an opening ratio of 50% was obtained. CFRP was manufactured using this carbon fiber woven fabric, but large voids were formed.
The tensile strength was about one-tenth.
【００１６】比較例２ 実施例１と同じ炭素繊維トウを開繊せずに製織し、ＦＡ
Ｗ５４０ｇ／ｍ2 、目開き割合１０％の平織りの織物を
得た。この炭素繊維織物を用いてＣＦＲＰを製造を試み
たが、樹脂含浸がうまくいかなかった。Comparative Example 2 The same carbon fiber tow as in Example 1 was woven without opening, and FA
A plain woven fabric having a W of 540 g / m 2 and an opening ratio of 10% was obtained. An attempt was made to produce CFRP using this carbon fiber fabric, but the resin impregnation was not successful.
【００１７】比較例３ 実施例１の黒鉛化工程で、梨地バーの代わりに鏡面のバ
ーを用いた以外は実施例１と同じ方法で製造した炭素繊
維トウを得た。このものを、開繊処理したところ、ケバ
の発生や、フィラメント切れにより、製織が困難であっ
た。Comparative Example 3 A carbon fiber tow produced in the same manner as in Example 1 except that a mirror-finished bar was used in place of the satin bar in the graphitization step of Example 1. When this was subjected to fiber opening treatment, weaving was difficult due to occurrence of fluff and breakage of filaments.
【００１８】[0018]
【発明の効果】本発明のピッチ系炭素繊維織物は、太く
糸幅の広い炭素繊維トウを用いて製織されているため凹
凸が少なく、織糸間の空隙が殆どないという特徴を有
し、且つ、安価に製造することができる。かかる炭素繊
維織物を用いることにより、欠陥が少なく、非常に高い
強度特性を有するＣＦＲＰやＣ／Ｃなどの複合材を得る
ことができる。該複合材の具体的用途としては、例え
ば、優れたガス透過性、電気伝導性、機械的強度を有す
る点で、燃料電池用の炭素電極材としての応用が期待で
きる。The pitch-based carbon fiber woven fabric of the present invention is characterized in that it is woven using a thick carbon fiber tow having a wide yarn width, so that it has few irregularities and almost no voids between the yarns. , And can be manufactured at low cost. By using such a carbon fiber fabric, it is possible to obtain a composite material such as CFRP or C / C having few defects and very high strength characteristics. As a specific application of the composite material, for example, it can be expected to be used as a carbon electrode material for a fuel cell in that it has excellent gas permeability, electric conductivity, and mechanical strength.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｄ０１Ｆ 9/145 Ｃ０４Ｂ 35/52 Ｅ ４Ｌ０４８ Ｆターム(参考） 4F072 AA01 AA04 AA06 AA07 AB10 AB17 AB18 AB27 AC05 AD23 AG03 AG17 AH18 AH22 AJ04 AL02 AL04 4G032 AA09 AA52 BA02 4J002 CC031 CD001 DA016 FA046 FD016 GC00 GN00 4L037 CS03 FA03 FA15 FA19 PG04 PP02 PP39 PS02 UA10 UA12 UA20 4L045 AA05 4L048 AA05 AA48 AA52 AC09 AC13 BA01 CA01 DA24 DA41 EB00──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification code FI Theme coat ゛ (Reference) D01F 9/145 C04B 35/52 E 4L048 F Term (Reference) 4F072 AA01 AA04 AA06 AA07 AB10 AB17 AB18 AB27 AC05 AD23 AG03 AG17 AH18 AH22 AJ04 AL02 AL04 4G032 AA09 AA52 BA02 4J002 CC031 CD001 DA016 FA046 FD016 GC00 GN00 4L037 CS03 FA03 FA15 FA19 PG04 PP02 PP39 PS02 UA10 UA12 UA20 4L045 AA05 4L048 AA05 DA09AC
Claims (5)
割合が１０％以下であることを特徴とするピッチ系炭素
繊維織物。1. A pitch-based carbon fiber woven fabric having a FAW of 50 to 500 g / m 2 and an opening ratio of 10% or less.
のピッチ系炭素繊維を製織してなる請求項１のピッチ系
炭素繊維織物。2. The pitch-based carbon fiber woven fabric according to claim 1, wherein pitch-based carbon fibers having 8000 to 20,000 filaments are woven.
０〜４０ｍｍのピッチ系炭素繊維トウを製織してなる請
求項１又は２のピッチ系炭素繊維織物。3. A fineness of 1.0 to 3.0 g / m and a yarn width of 1
The pitch-based carbon fiber woven fabric according to claim 1, wherein a pitch-based carbon fiber tow of 0 to 40 mm is woven.
繊維織物に熱硬化性樹脂を含浸してなるプリプレグ。4. A prepreg obtained by impregnating the pitch-based carbon fiber woven fabric according to claim 1 with a thermosetting resin.
炭素繊維強化樹脂複合材又は炭素繊維強化炭素複合材。5. A carbon fiber reinforced resin composite or a carbon fiber reinforced carbon composite produced using the prepreg according to claim 4.
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| JP2000033073A JP4547754B2 (en) | 2000-02-10 | 2000-02-10 | Pitch-based carbon fiber fabric |
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|---|---|---|---|
| JP2000033073A JP4547754B2 (en) | 2000-02-10 | 2000-02-10 | Pitch-based carbon fiber fabric |
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| JP2001226855A true JP2001226855A (en) | 2001-08-21 |
| JP4547754B2 JP4547754B2 (en) | 2010-09-22 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003034519A1 (en) * | 2001-10-16 | 2003-04-24 | Toray Industries, Inc. | Fuel cell-use carbon fiber woven fabric, electrode element, fuel cell, mobile unit, and production method for fuel cell-use carbon fiber woven fabric |
| JP2004207231A (en) * | 2002-12-11 | 2004-07-22 | Matsushita Electric Ind Co Ltd | Electrolyte membrane-electrode junction body for fuel cell and fuel cell operating method using it |
| CN1309106C (en) * | 2002-03-26 | 2007-04-04 | 松下电器产业株式会社 | Electrolyte film electrode union, fuel cell containing the same and process for producing them |
| JP2012254916A (en) * | 2011-05-18 | 2012-12-27 | Covalent Materials Corp | Carbon fiber-reinforced carbon composite cylindrical member, method of manufacturing carbon fiber-reinforced carbon composite cylindrical member, carbon fiber-reinforced carbon composite material crucible, and method of manufacturing carbon fiber-reinforced carbon composite material crucible |
| WO2013147257A1 (en) * | 2012-03-29 | 2013-10-03 | 三菱レイヨン株式会社 | Carbon fibre thermoplastic resin prepreg, carbon fibre composite material and manufacturing method |
| CN104755659B (en) * | 2012-08-31 | 2018-04-17 | 罗格斯德国股份有限公司 | Improved carbon electrode manufacture |
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| JPH11117143A (en) * | 1997-07-15 | 1999-04-27 | Mitsubishi Chemical Corp | Woven fabric of carbon fiber |
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| JPH07189073A (en) * | 1993-12-27 | 1995-07-25 | Mitsubishi Chem Corp | Woven fabric of carbon fiber |
| JPH10317250A (en) * | 1997-05-13 | 1998-12-02 | Toray Ind Inc | Reinforcing fiber fabric and its production |
| JPH11117143A (en) * | 1997-07-15 | 1999-04-27 | Mitsubishi Chemical Corp | Woven fabric of carbon fiber |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003034519A1 (en) * | 2001-10-16 | 2003-04-24 | Toray Industries, Inc. | Fuel cell-use carbon fiber woven fabric, electrode element, fuel cell, mobile unit, and production method for fuel cell-use carbon fiber woven fabric |
| CN1309106C (en) * | 2002-03-26 | 2007-04-04 | 松下电器产业株式会社 | Electrolyte film electrode union, fuel cell containing the same and process for producing them |
| JP2004207231A (en) * | 2002-12-11 | 2004-07-22 | Matsushita Electric Ind Co Ltd | Electrolyte membrane-electrode junction body for fuel cell and fuel cell operating method using it |
| JP2012254916A (en) * | 2011-05-18 | 2012-12-27 | Covalent Materials Corp | Carbon fiber-reinforced carbon composite cylindrical member, method of manufacturing carbon fiber-reinforced carbon composite cylindrical member, carbon fiber-reinforced carbon composite material crucible, and method of manufacturing carbon fiber-reinforced carbon composite material crucible |
| WO2013147257A1 (en) * | 2012-03-29 | 2013-10-03 | 三菱レイヨン株式会社 | Carbon fibre thermoplastic resin prepreg, carbon fibre composite material and manufacturing method |
| CN104321373A (en) * | 2012-03-29 | 2015-01-28 | 三菱丽阳株式会社 | Carbon fibre thermoplastic resin prepreg, carbon fibre composite material and manufacturing method |
| JPWO2013147257A1 (en) * | 2012-03-29 | 2015-12-14 | 三菱レイヨン株式会社 | Carbon fiber thermoplastic resin prepreg, carbon fiber composite material, and production method |
| CN104321373B (en) * | 2012-03-29 | 2018-04-06 | 三菱化学株式会社 | Thermoplastic carbon fiber resin prepreg material, carbon fibre composite and manufacture method |
| KR101902087B1 (en) | 2012-03-29 | 2018-09-27 | 미쯔비시 케미컬 주식회사 | Carbon fibre thermoplastic resin prepreg, carbon fibre composite material and manufacturing method |
| US10370506B2 (en) | 2012-03-29 | 2019-08-06 | Mitsubishi Chemical Corporation | Carbon fiber thermoplastic resin prepreg, carbon fiber composite material and producing method |
| US10370507B2 (en) | 2012-03-29 | 2019-08-06 | Mistubishi Chemical Corporation | Carbon fiber thermoplastic resin prepreg, carbon fiber composite material and producing method |
| CN104755659B (en) * | 2012-08-31 | 2018-04-17 | 罗格斯德国股份有限公司 | Improved carbon electrode manufacture |
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