JP4789940B2 - 等方性の繊維強化熱可塑性樹脂シートとその製造方法並びに成形板 - Google Patents
等方性の繊維強化熱可塑性樹脂シートとその製造方法並びに成形板 Download PDFInfo
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- B29C70/502—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC] by first forming a mat composed of short fibres
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- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of material
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- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
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- B29C43/44—Compression means for making articles of indefinite length
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/042—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with carbon fibres
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/241—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres
- C08J5/243—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres using carbon fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2101/00—Use of unspecified macromolecular compounds as moulding material
- B29K2101/12—Thermoplastic materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
- B29K2105/0854—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns in the form of a non-woven mat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
- B29K2105/14—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles oriented
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29K2307/00—Use of elements other than metals as reinforcement
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2377/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
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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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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
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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
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249924—Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
- Y10T428/24994—Fiber embedded in or on the surface of a polymeric matrix
- Y10T428/249948—Fiber is precoated
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Description
理論積層数=(成形板の厚さ)/(一つのプリプレグの厚さ)≧10
炭素繊維HTA−12K(800tex、12,000本のストランド、東邦テナックス社製)からなる長繊維を一方向に配向した目付40g/m2 の炭素繊維ストランドのシート状物の両面に、PA6フィルム(ナイロン6、ユニチカ社製、目付28.75g/m2)を配置し、シート状物をフィルムで挟んだサンドイッチ状の積層体を得た。この積層体を230〜260℃に加熱して、PA6フィルムをシート状物に溶融含浸させた。得られた樹脂含浸シート状物の厚さは0.07〜0.08mmであった。繊維体積含有率は30%であった。
炭素繊維HTA−6K(400tex、6,000本のストランド、東邦テナックス社製)からなる長繊維を一方向に配向した目付80g/m2 の炭素繊維ストランドのシート状物の両面に、PA6フィルム(ナイロン6、ユニチカ社製、目付28.75g/m2)を配置し、シート状物をフィルムで挟んだサンドイッチ状の積層体を得た。この積層体を、260℃に加熱して、PA6フィルムをシート状物に溶融含浸させた。得られた樹脂含浸シート状物は、幅が約5mmで、厚さは0.26mmであった(繊維体積含有率は50%)。その後は実施例1の場合と同様に処理して、カット長25mm、幅5mmのストランドプリプレグを用いて繊維強化熱可塑性樹脂シートを作成し、そのシートを用いて厚さ2.3mm(理論積層数9)の成形板を得た。この成形板の機械的物性は表1に示した通りであった。
実施例1で得られた樹脂含浸シート状物(幅20mm)を、裁断する長さを10mm(比較例2)、40mm(実施例2)、50mm(比較例3)と変えたものを3種類別々に準備し、それぞれ実施例1の場合と同様に成形板を成形した。それらの機械的物性は表1に示した通りであった。プリプレグの長さが10mm(比較例2、本発明の範囲外)と短いものは、成形板の機械的物性、特に、曲げ強度が低いことがわかる。また、長さが50mm(比較例3、本発明の範囲外)と長いものは、長さが40mm(実施例2、本発明の範囲内)のものと機械的物性自体は殆どかわらないが、CV値が10以上(実施例2は10以下)であり、物性値のバラツキが大きい、即ち等方性に劣ることがわかる。
実施例1と同様な実験において、但し、PA6フィルムの目付を変えて、プリプレグの繊維体積含有率が15%(比較例4)と45%(実施例3)になるように調節した。得られたプリプレグを用いて、それぞれ実施例1と同様に成形板を成形した。それらの機械的物性は表1に示した通りであった。維体積含有率が15%(比較例4、本発明の範囲外)のものは、機械的物性が十分ではないことがわかる。
実施例1と同様な実験において、但し、シート状物の目付とPA6フィルムの目付を変えて、繊維体積含有率が30%になるように調節し、プリプレグの厚さが0.15mm(比較例5)と0.10mm(実施例4)と0.05mm(実施例5)のものを得た。例えば、厚さが0.15mmの場合は、シート状物の目付を80g/m2、PA6フィルムの目付を57.5g/m2に調節すれば良い。得られたプリプレグを用いて、それぞれ実施例1と同様に成形板を成形した。それらの機械的物性は表1に示した通りであった。厚さが0.15mmのものは(比較例5、本発明の範囲外)、厚さが0.10mm(実施例4)や0.05mm(実施例5)のものより、特に曲げ強度が低いことがわかる。
本比較例は、チョップドストランド・プリプレグの代わりに、通常の炭素繊維不織布を用いて成形板を製造した例である。炭素繊維HTA−12K(800tex、12,000本のストランド、東邦テナックス社製)の不織布とPA6を一体化した炭素繊維強化スタンパブルシートを用いて、遠赤外線ヒータによって260〜280℃に予熱した後、金型プレス法を用いて80〜120℃での条件で加熱・加圧処理し、厚さ3mmの成形板を得た。その機械的物性は表1に示した通りであった。繊維体積含有率は、本発明の実施例1のものと同じであるが、機械的物性値は本発明のものの方が優れていることが分かる。
本比較例は、チョップドストランド・プリプレグの代わりに、実施例1と同じ炭素繊維のチョップドファイバー(長さ6mm)とPA6樹脂ペレットを用いて、常法に従って射出成形で、厚さ3mmの成形板を製造した。得られた成形板の機械的物性は表1に示した通りであった。繊維体積含有率は、本発明の実施例1のものと同じであるが、機械的物性値は本発明のものの方が優れていることが分かる。
Claims (6)
- 熱可塑性樹脂と強化繊維とからなり、前記熱可塑性樹脂をマトリックスとした一方向に配列されたストランド(前記強化繊維の束)を切断した小片のプリプレグであるチョップドストランド・プリプレグであって、該プリプレグの繊維体積含有率(Vf)が20〜50%であり、該プリプレグの繊維軸方向の長さが15〜45mmであり、そして該プリプレグの厚さが0.13mm以下のものが、繊維配向がランダムになるように積層された積層物を、加熱・加圧してシート状に成形してなる等方性の繊維強化熱可塑性樹脂シート。
- 強化繊維が炭素繊維である請求項1記載の等方性の繊維強化熱可塑性樹脂シート。
- 請求項1記載の繊維強化熱可塑性樹脂シートが1枚乃至複数枚積層され一体に成形された成形板であって、その理論積層数が下記式を満足する成形板。
理論積層数=(成形板の厚さ)/(一つのプリプレグの厚さ)≧10 - JIS K 7017に従って測定した曲げ強度と曲げ弾性率のCV値が10以下である請求項3記載の成形板。
- 熱可塑性樹脂と強化繊維とからなるチョップドストランド・プリプレグであって、該プリプレグの繊維体積含有率(Vf)が20〜50%であり、該プリプレグの繊維軸方向の長さが15〜45mmであり、且つ該プリプレグの厚さが0.13mm以下のものを、繊維配向がランダムになるように積層し、次いで該積層物を加熱・加圧することを特徴とする等方性の繊維強化熱可塑性樹脂シートの製造方法。
- チョップドストランド・プリプレグを、繊維配向がランダムになるようにスチールベルト上に積層し、次いで該積層物を、ダブルベルトプレス、間欠ホットプレス又は熱ロールを用いて150〜400℃で0.1〜10MPaで加熱・加圧処理することからなる、請求項5記載の等方性の繊維強化熱可塑性樹脂シートの製造方法。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007530990A JP4789940B2 (ja) | 2005-08-18 | 2006-08-14 | 等方性の繊維強化熱可塑性樹脂シートとその製造方法並びに成形板 |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005237459 | 2005-08-18 | ||
| JP2005237459 | 2005-08-18 | ||
| PCT/JP2006/315999 WO2007020910A1 (ja) | 2005-08-18 | 2006-08-14 | 等方性の繊維強化熱可塑性樹脂シートとその製造方法並びに成形板 |
| JP2007530990A JP4789940B2 (ja) | 2005-08-18 | 2006-08-14 | 等方性の繊維強化熱可塑性樹脂シートとその製造方法並びに成形板 |
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| Publication Number | Publication Date |
|---|---|
| JPWO2007020910A1 JPWO2007020910A1 (ja) | 2009-02-26 |
| JP4789940B2 true JP4789940B2 (ja) | 2011-10-12 |
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| Country | Link |
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| US (1) | US9545760B2 (ja) |
| EP (1) | EP1927618A4 (ja) |
| JP (1) | JP4789940B2 (ja) |
| KR (1) | KR100944032B1 (ja) |
| CN (1) | CN101243121B (ja) |
| WO (1) | WO2007020910A1 (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016143645A1 (ja) * | 2015-03-06 | 2016-09-15 | 国立大学法人 東京大学 | チョップドテープ繊維強化熱可塑性樹脂シート材及びその製造方法 |
| US9580568B2 (en) | 2011-04-14 | 2017-02-28 | Teijin Limited | Fiber-reinforced composite material |
| US12570809B2 (en) | 2016-10-07 | 2026-03-10 | Suncorona Oda Co., Ltd. | Unidirectional prepreg, fiber-reinforced thermoplastic resin sheet, manufacturing methods of unidirectional prepreg and fiber-reinforced thermoplastic resin sheet, and molded body |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4988229B2 (ja) * | 2006-03-25 | 2012-08-01 | 帝人テクノプロダクツ株式会社 | 表面平滑性に優れたハイブリッド複合材料とその成形方法。 |
| CN101774281B (zh) * | 2009-01-09 | 2013-07-10 | 马水源 | 预浸热塑性树脂结构的制造方法 |
| GB2471316B (en) * | 2009-06-25 | 2014-07-30 | Gordon Murray Design Ltd | Vehicle chassis |
| CN102049883A (zh) * | 2009-10-28 | 2011-05-11 | 瑞鸿复材企业股份有限公司 | 具织物触感的纤维积层体结构及其制备方法 |
| BR112012031629A2 (pt) | 2010-06-11 | 2017-05-23 | Ticona Llc | membro estrutural formado a partir de um sólido perfil linear |
| JP2013530855A (ja) | 2010-06-22 | 2013-08-01 | ティコナ・エルエルシー | 強化引抜成形異形材の形成方法 |
| KR20130112710A (ko) | 2010-06-22 | 2013-10-14 | 티코나 엘엘씨 | 보강된 속이 빈 프로파일 |
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Also Published As
| Publication number | Publication date |
|---|---|
| US9545760B2 (en) | 2017-01-17 |
| US20090104418A1 (en) | 2009-04-23 |
| JPWO2007020910A1 (ja) | 2009-02-26 |
| KR100944032B1 (ko) | 2010-02-24 |
| WO2007020910A1 (ja) | 2007-02-22 |
| EP1927618A4 (en) | 2010-01-13 |
| EP1927618A1 (en) | 2008-06-04 |
| KR20080033315A (ko) | 2008-04-16 |
| CN101243121A (zh) | 2008-08-13 |
| CN101243121B (zh) | 2011-09-28 |
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