JPH0813520B2 - Carbon fiber reinforced carbon composite material - Google Patents
Carbon fiber reinforced carbon composite materialInfo
- Publication number
- JPH0813520B2 JPH0813520B2 JP62129147A JP12914787A JPH0813520B2 JP H0813520 B2 JPH0813520 B2 JP H0813520B2 JP 62129147 A JP62129147 A JP 62129147A JP 12914787 A JP12914787 A JP 12914787A JP H0813520 B2 JPH0813520 B2 JP H0813520B2
- Authority
- JP
- Japan
- Prior art keywords
- carbon fiber
- composite material
- fiber reinforced
- carbon
- carbon composite
- 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 - Lifetime
Links
- 229920000049 Carbon (fiber) Polymers 0.000 title claims description 33
- 239000004917 carbon fiber Substances 0.000 title claims description 33
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims description 25
- 229910052799 carbon Inorganic materials 0.000 title claims description 24
- 239000002131 composite material Substances 0.000 title claims description 21
- 239000002759 woven fabric Substances 0.000 claims description 13
- 239000004744 fabric Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000835 fiber Substances 0.000 description 6
- 239000011229 interlayer Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920000297 Rayon Polymers 0.000 description 3
- 239000002964 rayon Substances 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000012783 reinforcing fiber Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Ceramic Products (AREA)
- Reinforced Plastic Materials (AREA)
- Laminated Bodies (AREA)
- Moulding By Coating Moulds (AREA)
Description
【発明の詳細な説明】 ［産業上野利用分野］ 本発明は層間接着力を強化した炭素繊維強化炭素複合
材料に関するものである。The present invention relates to a carbon fiber reinforced carbon composite material having enhanced interlayer adhesion.
［従来の技術］ 炭素繊維強化炭素複合材料の強化繊維の形状は、チョ
ップドファイバーペーパー、不織布、長繊維（１次元強
化）、織布（２次元）、３次元織等があげられる。[Prior Art] The shape of the reinforcing fiber of the carbon fiber reinforced carbon composite material includes chopped fiber paper, non-woven fabric, long fiber (one-dimensional reinforcing), woven fabric (two-dimensional), three-dimensional weaving and the like.
強化繊維として、短繊維であるチョップドファイバー
ペーパーを用いた場合、又は不織布を用いた場合の炭素
繊維強化炭素複合材料は、強度が弱く構造材として使用
に耐えない。また長繊維（１次元強化）の場合は、一方
向についてのみ高強度という異方性が強すぎて構造材と
しての使用に問題がある。また３次元織物の場合は、強
度も等方的であるため構造材として最適であるが、３次
元織物は非常に高価であること、また中心部を高密度化
することが難しいという欠点がある。When chopped fiber paper, which is a short fiber, is used as the reinforcing fiber, or when a non-woven fabric is used, the carbon fiber-reinforced carbon composite material has low strength and cannot be used as a structural material. In the case of long fibers (one-dimensionally reinforced), the anisotropy of high strength in only one direction is too strong, and there is a problem in using it as a structural material. In addition, a three-dimensional woven fabric is optimal as a structural material because it is isotropic in strength, but the three-dimensional woven fabric has disadvantages that it is very expensive and it is difficult to densify the central portion. .
織布の場合上記のような問題点はないものの、目的の
炭素複合材料の製造においては、通常１種類の２次元織
布（あみ方、糸間隔、収束糸のフィラメント数、カーボ
ンファイバーの種類が同じもの）を用いたプリプレグを
積層してから焼成するという工程をとるため、積層方向
の接着強度が弱い。すなわち層間剪断強度が弱いという
問題点がある。本発明は上記問題点に鑑み成されたもの
でありその目的は、２次元織炭素繊維織布を用いてプリ
プレグの複数を積層した構造でありながら、層間接着強
度の高い、炭素繊維強化炭素複合材料を提供することに
ある。In the case of a woven cloth, although there are no such problems as described above, in the production of a target carbon composite material, usually, one type of two-dimensional woven cloth (the way of binding, the thread interval, the number of filaments of the converging thread, the type of carbon fiber is Since the prepreg using the same one) is laminated and then fired, the adhesive strength in the laminating direction is weak. That is, there is a problem that the interlaminar shear strength is weak. The present invention has been made in view of the above problems, and an object thereof is a carbon fiber-reinforced carbon composite having a high interlayer adhesion strength while having a structure in which a plurality of prepregs are laminated using a two-dimensional woven carbon fiber woven cloth. To provide the material.
［問題点を解決するための手段］ 本発明の上記目的は、２次元織炭素繊維織布を用いた
プリプレグの複数が積層されてなる炭素繊維強化炭素複
合材料において、隣接するプリプレグの織布による表面
状態が互いに異なっていることを特徴とする炭素繊維強
化炭素複合材料によって達成される。[Means for Solving the Problems] The above object of the present invention is to provide a carbon fiber-reinforced carbon composite material in which a plurality of prepregs using a two-dimensional woven carbon fiber woven fabric are laminated, by using a woven fabric of adjacent prepregs. It is achieved by a carbon fiber reinforced carbon composite material characterized by different surface states.
本発明において隣接するプリプレグの織布による表面
状態を互いに異なるようにするのは、プリプレグ間の接
着を強力にするためである。そのための手段としては、
織布の、あみ方、糸間隔、収束系のフィラメント数、炭
素繊維を異ならせること、織布のおき方を異ならせるこ
と等が挙げられ、それらを組み合わせて用いてもよい。In the present invention, the surface states of the prepregs adjacent to each other are made different from each other in order to strengthen the adhesion between the prepregs. As a means for that,
Examples of the method include different ways of weaving, spacing of threads, number of filaments in a converging system, different carbon fibers, different ways of placing woven cloth, and the like, and these may be used in combination.
ここであみ方としては、平織、朱子織、綾織等が用い
られる。また糸間隔とは、縦糸・横糸のいずれかもしく
はその両方のピッチである。また収束糸のフィラメント
数とは、縦糸・横糸の一束の糸に含まれる炭素繊維の数
のことであり、ひとつの織布の中にも数種のフィラメン
ト数の収束糸が含まれ得る。また酸素繊維の種類とは、
炭素繊維の原料（PAN、ピッチ、レーヨン等）や線径、
成分（炭素質・黒鉛質）である。また織布のおき方と
は、プリプレグを積層して成形する際のプリプレグの並
べ方であり、具体的には織布のおき方を異ならせるため
に積層時に隣接するプリプレグの凹の位置に凸を合わせ
るようにする。Here, plain weave, satin weave, twill weave, and the like are used as the stitches. Further, the thread interval is a pitch of either warp threads or weft threads, or both of them. The number of filaments of the converging yarn means the number of carbon fibers contained in one bundle of warp yarns and weft yarns, and one woven fabric may contain converging yarns of several kinds of filament numbers. What is the type of oxygen fiber?
Carbon fiber raw materials (PAN, pitch, rayon, etc.) and wire diameter,
It is a component (carbonaceous / graphitic). Further, the woven cloth placement is the arrangement of the prepregs when the prepregs are stacked and molded. Specifically, in order to make the woven cloth placement different, a convex is formed at the concave position of the adjacent prepregs during the stacking. Try to match.
以上の手段を単独で又は組み合わせて用いれば、積層
した場合、プリプレグ表面の凹凸の周期や振幅が異なる
ため及び／又は凹凸がかみあわさるため、隣接するプリ
プレグの炭素繊維がからみあうかたちとなり、層間強度
を向上させることができる。When the above means are used alone or in combination, when laminated, because the cycle and amplitude of the unevenness of the prepreg surface are different and / or the unevenness is engaged, the carbon fibers of the adjacent prepregs become entangled and the interlayer strength is increased. Can be improved.
以下、本発明を実施例を挙げて説明する。 Hereinafter, the present invention will be described with reference to examples.
［実施例］ 比較例１ （１）PAN系炭素繊維の1000本フィラメントを平織にし
た織布を用いたプリプレグを100枚用意し、適当に重ね
合わせ加圧成形した。[Examples] Comparative Example 1 (1) 100 pieces of PAN-based carbon fiber A prepreg using a woven cloth obtained by plain-weaving filaments was prepared for 100 sheets, and appropriately laminated and pressure-molded.
（２）その後、不活性雰囲気で2000℃まで焼成し炭素繊
維強化炭素複合材料を得た。(2) After that, it was fired to 2000 ° C. in an inert atmosphere to obtain a carbon fiber reinforced carbon composite material.
尚、プリプレグは炭素繊維：自己焼結性炭素粉末：樹
脂＝1:1:1（重量比）で構成されている。成形条件は、
温度200℃面圧力20kg/cm2加圧時間10分とし、焼成条件
は、1000℃まで昇温速度30℃/hその後2000℃まで100℃/
h面圧力500kg/cm2で行った。The prepreg is composed of carbon fiber: self-sintering carbon powder: resin = 1: 1: 1 (weight ratio). The molding conditions are
Temperature 200 ℃ Surface pressure 20kg / cm 2 Pressurization time 10 minutes, firing conditions are heating rate up to 1000 ℃ 30 ℃ / h then 2000 ℃ 100 ℃ /
The h-side pressure was 500 kg / cm 2 .
実施例１ （１）比較例１で用いたプリプレグを、100枚用意し、
隣接するプリプレグの縦糸と横糸の交点が重ならないよ
うに重ね合わせ加圧成形した。Example 1 (1) Prepare 100 sheets of the prepreg used in Comparative Example 1,
Overlapping and pressure molding were performed so that the intersections of the warp and weft threads of adjacent prepregs did not overlap.
（２）その後比較例と同条件で焼成し、炭素繊維強化炭
素複合材料を得た。(2) Then, it was fired under the same conditions as in Comparative Example to obtain a carbon fiber reinforced carbon composite material.
（実施例２） （１）PAN系炭素繊維の1000本フィラメントを平織,8朱
子織，綾織にした織布を用いたプリプレグをそれぞれ35
枚ずつ用意し、平織・８朱子織・綾織・平織……の順に
重ね合わせ加圧成形した。(Example 2) (1) 35 prepregs using a woven cloth of 1000 pieces of PAN-based carbon fiber made into plain weave, 8 satin weave, and twill weave.
Each piece was prepared and laminated in order of plain weave, 8 satin weave, twill weave, plain weave, and pressure-molded.
（２）その後比較例１と同条件で焼成し炭素繊維強化炭
素複合材料を得た。(2) Thereafter, firing was performed under the same conditions as in Comparative Example 1 to obtain a carbon fiber reinforced carbon composite material.
実施例３ （１）PAN系炭素繊維の1000本フィラメントを平織にし
た２種類の織布を用いたプリプレグをそれぞれ50枚ずつ
用意した。１種類は、縦糸・横糸と10mmに９本収束糸が
存在するもの、もう１種は10mmに７本収束糸が存在する
織布でこれらを交互に重ね合わせ加圧成形した。Example 3 (1) 50 pieces of prepregs using two kinds of woven cloths in which 1000 filaments of PAN-based carbon fiber were plain woven were prepared. One type was a woven fabric in which warp and weft yarns had 10 converging yarns in 10 mm, and the other type was a woven fabric in which 7 converging yarns exist in 10 mm, and these were alternately laminated and pressure-molded.
（２）その後比較例１と同条件で焼成し、炭素繊維強化
炭素複合材料を得た。(2) Then, it was fired under the same conditions as in Comparative Example 1 to obtain a carbon fiber reinforced carbon composite material.
実施例４ （１）PAN系炭素繊維のフィラメント数が1000本,2000
本,3000本,6000本,12000本の収束糸を用いて縦糸・横糸
ともに、3000本,1000本,6000本,2000本,12000本,2000
本,6000本,1000本,3000本,1000本……の順に８朱子織に
した織布を用いたプリプレグを40枚用意し、隣接するプ
リプレグの凹凸ができるだけ重ならないように重ね合わ
せ加圧成形した。Example 4 (1) The number of filaments of PAN-based carbon fiber is 1000, 2000
3000, 6000, 12000 yarns for both warp and weft yarns 3000, 1000, 6000, 2000, 12000, 2000
40 pieces of prepreg using 8 satin weave cloth are prepared in order of 6000 pieces, 6000 pieces, 1000 pieces, 3000 pieces, 1000 pieces. did.
（２）その後比較例１と同じ条件で焼成し炭素繊維強化
炭素複合材料を得た。(2) Then, it was fired under the same conditions as in Comparative Example 1 to obtain a carbon fiber reinforced carbon composite material.
実施例５ （１）線径５μｍ程度のPAN系炭素繊維の1000本フィラ
メントを平織にした織布と線径12μｍ程度のピッチ系炭
素繊維の2000本フィラメントを平織にした織布と、線径
８μｍ程度のレーヨン系炭素繊維の3000本フィラメント
数を平織にした織布を使用したプリプレグをそれぞれ15
枚用意し、PAN系，ピッチ系，レーヨン系……の順に重
ね合わせ加圧成形した。Example 5 (1) Woven cloth in which 1000 filaments of PAN-based carbon fiber having a wire diameter of about 5 μm are plain-woven, woven cloth in which 2000 filaments of pitch-based carbon fiber having a wire diameter of about 12 μm are plain-woven, and wire diameter of 8 μm Approximately 3000 rayon-based carbon fibers, 15 prepregs each using a plain woven fabric
Sheets were prepared, and PAN type, pitch type, rayon type, etc. were stacked in this order and pressure-molded.
（２）その後比較例１と同じ条件で焼成し炭素繊維強化
炭素複合材料を得た。(2) Then, it was fired under the same conditions as in Comparative Example 1 to obtain a carbon fiber reinforced carbon composite material.
比較例1,実施例１〜５で得た炭素繊維強化炭素複合材
料の層間剪断強度を測定した。ここで測定は、試験片寸
法７（幅）×５（厚さ）×30（長さ）、スパン20mm、ク
ロスヘッド速度0.5mm/min、の３点曲げ試験法でおこな
った。その結果を第１表に示す。The interlaminar shear strength of the carbon fiber reinforced carbon composite materials obtained in Comparative Example 1 and Examples 1 to 5 was measured. Here, the measurement was carried out by a three-point bending test method with a specimen size of 7 (width) × 5 (thickness) × 30 (length), a span of 20 mm, and a crosshead speed of 0.5 mm / min. The results are shown in Table 1.
［発明の効果］ 以上のように本発明の炭素複合材料は、層間接着力が
強く、全体としての強度も高く等方的であり、その製造
においても特に複雑な工程を必要としない炭素繊維強化
炭素複合材料である。 [Advantages of the Invention] As described above, the carbon composite material of the present invention has a strong interlayer adhesion, a high strength as a whole and isotropic, and a carbon fiber reinforced that does not require a particularly complicated process in its production. It is a carbon composite material.
Claims (3)
の複数が積層されてなる炭素繊維強化炭素複合材料にお
いて、隣接するプリプレグの織布による表面状態が互い
に異なっていることを特徴とする炭素繊維強化炭素複合
材料。1. A carbon fiber reinforced carbon composite material in which a plurality of prepregs made of a two-dimensional woven carbon fiber woven fabric are laminated, and the prepregs of adjacent prepregs have different surface states from each other. Carbon fiber reinforced carbon composite material.
メント数、炭素繊維の種類、もしくは織布のおき方、又
はそれらの組み合わせが異なることにより、隣接するプ
リプレグの織布による表面状態が互いに異なっている特
許請求の範囲第１項記載の炭素繊維強化炭素複合材料。2. The surface of an adjacent prepreg made of a woven fabric due to the difference in the weave pattern, the thread spacing, the number of filaments in the converging system, the type of carbon fiber, the woven fabric placement, or a combination thereof. The carbon fiber reinforced carbon composite material according to claim 1, wherein the states are different from each other.
ずれかである特許請求の範囲第１項又は第２項記載の炭
素繊維強化炭素複合材料。3. The carbon fiber reinforced carbon composite material according to claim 1 or 2, wherein the woven fabric has a plain weave, satin weave, or twill weave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62129147A JPH0813520B2 (en) | 1987-05-26 | 1987-05-26 | Carbon fiber reinforced carbon composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62129147A JPH0813520B2 (en) | 1987-05-26 | 1987-05-26 | Carbon fiber reinforced carbon composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63293051A JPS63293051A (en) | 1988-11-30 |
| JPH0813520B2 true JPH0813520B2 (en) | 1996-02-14 |
Family
ID=15002295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62129147A Expired - Lifetime JPH0813520B2 (en) | 1987-05-26 | 1987-05-26 | Carbon fiber reinforced carbon composite material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0813520B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH068214B2 (en) * | 1989-12-22 | 1994-02-02 | 新日本製鐵株式会社 | Carbon fiber reinforced carbon composite material |
| JP5490554B2 (en) * | 2010-02-01 | 2014-05-14 | コバレントマテリアル株式会社 | Carbon fiber reinforced carbon composite crucible and method for producing the crucible |
| JP5812439B2 (en) * | 2011-03-29 | 2015-11-11 | 東洋紡株式会社 | Laminated molded product of fiber reinforced thermoplastic resin |
| JP5979862B2 (en) * | 2011-12-13 | 2016-08-31 | イビデン株式会社 | C / C composite laminate |
-
1987
- 1987-05-26 JP JP62129147A patent/JPH0813520B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63293051A (en) | 1988-11-30 |
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