JP4615398B2 - 炭素繊維複合材料成形体 - Google Patents
炭素繊維複合材料成形体 Download PDFInfo
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- B29C70/28—Shaping operations therefor
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- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
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- Y10T428/249945—Carbon or carbonaceous fiber
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2926—Coated or impregnated inorganic fiber fabric
- Y10T442/2984—Coated or impregnated carbon or carbonaceous fiber fabric
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description
図1は、本発明の炭素繊維複合材料成形体の一実施形態の概念を示す断面図である。この炭素繊維複合材料成形体1は、表皮層を形成する2層の炭素繊維層2の間にコア層3が狭持された構成であり、この積層体に含浸用樹脂が含浸され、この樹脂の硬化とともに成形されている。本発明においては、炭素繊維複合材料成形体における炭素繊維含有率が5〜50%であることが好ましい態様である。また、このような成形体は、表皮層を形成する2層の炭素繊維層の間にコア層を挟み込む工程と、粘度が100〜20000mPa・sの含浸用樹脂を、上記積層体に含浸させる工程と、上記含浸用樹脂を硬化する工程とを備えた本発明の炭素繊維複合材料成形体の製造方法により好適に製造することができる。
1.炭素繊維複合材料成形体の作製
<実施例1>
コア層として、TOYOBO社製のスパンボンド4161N(目付け:161g/m2)とスパンボンド6401(目付け:40g/m2)とを用い、LIBA社製のマルチアクシャル織り機により、炭素繊維(商品名:HTA−S12K−F202、東邦テナックス社製)を1層当たり目付220.5g/m2で、繊維の配向角度が−30°/30°/90°/上記コア層/90°/30°/−30°の構成となるように織り、炭素繊維積層体を作製した。
LIBA社製のマルチアクシャル織り機を用いて、炭素繊維(商品名:HTA−S12K−F202、東邦テナックス社製)を1軸当たり目付220.5g/m2で、繊維の配向角度が−30°/30°/90°/90°/30°/−30°の構成となるように織ることにより、炭素繊維積層体を作製した。
プリプレグ(商品名:W3101/Q112J、東邦テナックス社製)を、繊維の配向角度が0°/90°の構成となるように10枚積層して、□300mmの炭素繊維積層体を作製した。
上記のようにして作製した実施例及び比較例の炭素繊維複合体材料成形体について、コア層、織物及び炭素繊維積層体の厚さ、Vf、曲げ強度、弾性率、引張り強度、並びに、圧縮強度を、下記の方法により測定し、評価を行った。これらの結果は、表1に示した。
コア層の厚さ、織物1枚の厚さ、炭素繊維積層体の厚さについては、ミツトヨ社製のシックネスゲージ547−321により試料を挟み込んで測定した。
まず、MIRAGE社製のSD−120Lにより、各炭素繊維複合材料成形体を構成する含浸用樹脂及び炭素繊維の密度を測定した。次いで、ダイヤモンドカッターで各炭素繊維複合材料成形体を□15mの試験片に切り出し、AND社製のHM−300により、重量を測定した。また、後述するガラスフィルターについても同様に重量を測定した。
樹脂重量=炭素繊維複合材料成形体重量−炭素繊維重量
炭素繊維体積=炭素繊維重量/炭素繊維密度
樹脂体積=樹脂重量/樹脂密度
Vf=炭素繊維体積/(炭素繊維体積+樹脂体積)×100(%)
JIS K7074に準拠して、ダイヤモンドカッターで各炭素繊維複合材料成形体を幅15mm、長さ100mmの試験片に切り出し、この試験片について、島津製作所社製のオートグラフAG5000Eを用いて、試験速度:5mm/min、下支点スパン:板厚×40mmで、4点曲げ試験を行い、B法計算式から曲げ強度及び弾性率を算出した。
JIS K7073に準拠して、ダイヤモンドカッターで各炭素繊維複合材料成形体を幅25mm、長さ200mmの試験片に切り出し、この試験片について、インストロン社製の5882を用いて、試験速度:1mm/min、チャックスパン:100mmで、引張り試験を行い、測定値から引張り強度を算出した。
JIS K7076に準拠して、ダイヤモンドカッターで各炭素繊維複合材料成形体を幅12.5mm、長さ78mmの試験片に切り出し、次いで、この試験片とGFRP製タブとの接着面を#300の紙やすりで研磨した後、アセトン脱脂し、エポキシ系接着剤で両者を接着した。次に、このタブ付き試験片について、島津製作所社製のオートグラフAG5000Eを用いて、試験速度:1mm/min、タブ間スパン:8mmで、A法により圧縮試験を行い、測定値から圧縮強度を算出した。
2…炭素繊維シート
3…コア層
Claims (2)
- 表皮層を形成する2層の炭素繊維層の間に不織布からなるコア層が狭持されて積層体をなし、この積層体に含浸用樹脂を含浸して硬化した炭素繊維複合材料成形体において、前記炭素繊維複合材料成形体における前記炭素繊維の体積含有率が5〜50%であることを特徴とする炭素繊維複合材料成形体。
- 炭素繊維複合材料成形体の製造方法であって、
表皮層を形成する2層の炭素繊維層の間に不織布からなるコア層を挟み込んで積層体とする工程と、
粘度が100〜20000mPa・sの含浸用樹脂を、上記積層体に含浸させる工程と、
上記含浸用樹脂を硬化する工程とを備えることにより、炭素繊維複合材料成形体における前記炭素繊維の体積含有率を5〜50%とすることを特徴とする炭素繊維複合材料成形体の製造方法。
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JP2005245268A JP4615398B2 (ja) | 2005-08-26 | 2005-08-26 | 炭素繊維複合材料成形体 |
US11/509,814 US7648759B2 (en) | 2005-08-26 | 2006-08-25 | Compact carbon fiber composite material |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US10293558B2 (en) | 2014-05-26 | 2019-05-21 | Nissan Motor Co., Ltd. | Composite material molded article and method of producing same |
US10723100B2 (en) | 2016-05-02 | 2020-07-28 | Nissan Motor Co., Ltd. | Fiber-reinforced resin molded article and method for manufacturing same |
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JP5044345B2 (ja) * | 2007-09-21 | 2012-10-10 | 株式会社東芝 | 開閉装置 |
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US7648759B2 (en) | 2010-01-19 |
US20070202762A1 (en) | 2007-08-30 |
JP2007055162A (ja) | 2007-03-08 |
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