JP5897593B2 - 複合品製造用樹脂溶解性ベールおよびそれの製造方法 - Google Patents
複合品製造用樹脂溶解性ベールおよびそれの製造方法 Download PDFInfo
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- JP5897593B2 JP5897593B2 JP2013542037A JP2013542037A JP5897593B2 JP 5897593 B2 JP5897593 B2 JP 5897593B2 JP 2013542037 A JP2013542037 A JP 2013542037A JP 2013542037 A JP2013542037 A JP 2013542037A JP 5897593 B2 JP5897593 B2 JP 5897593B2
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- resin
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
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- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0261—Polyamide fibres
- B32B2262/0269—Aromatic polyamide fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/106—Carbon fibres, e.g. graphite fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/718—Weight, e.g. weight per square meter
-
- 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
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
-
- 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.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/608—Including strand or fiber material which is of specific structural definition
- Y10T442/609—Cross-sectional configuration of strand or fiber material is specified
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- Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Optics & Photonics (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Nonwoven Fabrics (AREA)
- Reinforced Plastic Materials (AREA)
- Laminated Bodies (AREA)
- Moulding By Coating Moulds (AREA)
Description
クスは18から38の範囲であってもよい。
溶解性を制御する結果としてあまりにも早期の溶解が実質的または完全に起こらないようにしかつ強化剤が複合品全体に渡って実質的または完全にむらなく分布するようにする。
流)に運ばれる結果としてもたらされる。
よびFAW偏差が小さいことが含まれる。また、ベール強度が高いことも改良として実現されたが、しかしながら、それはこの上に挙げた特性と同じ度合ではなかった。逆に、本出願者らは、気流温度を低くして約650度Fにすると限られた度合であるが向上がもたらされることも見いだし、そのような向上には、これらに限定するものでないが、繊維がより粗いことおよび微細な繊維のパーセントが低いこと(即ち、直径が8μm未満の繊維が20%未満であること)が含まれる。
の態様の重合体が示すメルトフローインデックスは約18MFIから約38MFI、好適には約20MFIから28MFIの範囲である。即ち、そのような重合体は高い粘度(η)を示し、いくつかの態様では、全体に渡って狭い分子量分布示す。MFIが低いこと、即ち約20MFIから28MFIの範囲であることは重合体が高い分子量を有することに相当する。このような特性の影響によって結果として繊維の溶解速度が遅くなりかつ重合体が起こす分解の速度が遅くなった。
」が低いと呼ぶ。ベールの厚みが薄いことが重要である、と言うのは、そのような厚みはプレフォームのかさの直接的関数であるからである。密封型鋳型RTM用途では、プレフォームの寸法が鋳型寸法の5%から10%の範囲を超えないようにすべきである。通常のベールを用いるとプレフォームのかさが20%に及んで増加する。
解釈される。このことは密封型鋳込み用途、例えばRTM[この場合、鋳型を閉じることができるようにプレフォームが鋳型内に適切に適合すべきである(この上で考察した)]などの場合に特に重要である。加うるに、このようにプレフォームのかさが小さいことは複合品プライ厚(プライ層1層当たりにベールを1つ含有する複合品の場合)がベール無しで作られた複合品の複合品プライ厚(CPT)に相当すると解釈される(図7を参照)。図7を参照して、左側の写真はカレンダー加工されていないベール層を用いて作られた複合積層品の断面を示しており、中心の写真は本発明の態様に従うカレンダー加工ベールを用いて作られた複合積層品を示しており、右側の写真はベールを全く用いないで作られた複合積層品である。これらの積層品を比較することで、カレンダー加工ベールの場合の接触面の層の方がカレンダー加工されていないベールのそれよりもずっと狭いことが分かる。このようにかさが小さい結果として繊維体積分率がより高い複合品がもたらされる。
解することを指す。あまりにも早期の溶解は、溶解が樹脂注入温度より低い温度で生じる時に起こる。
の利点がもたらされることを見いだした:カレンダー加工していないベールの厚みが250から500μmの範囲であるのに比較してベールの厚みが20から90μmの範囲であること、ベールが不織布の特性、例えば多孔性および柔軟性を維持していること(即ちフィルムのようでないこと)、プレフォームバルクファクターが低いこと(特に密封型鋳込み用途、例えばRTMなどで重要)、およびCPTがベール無しで作られた複合品のそれに相当すること。
Claims (9)
- 液状樹脂注入用に形造られたプレフォームであって、
強化繊維を含んで成る少なくとも1の構造層、および
前記構造層と接触している少なくとも1の樹脂溶解性不織ベールであって、平均直径が10ミクロンから16ミクロンの範囲でありかつ直径が8ミクロン未満の繊維が20%未満である多数の熱可塑性繊維で構成されており、幅方向の布面積重量偏差が10%未満であるベールを含有して成る、
ここで、ベールの熱可塑性繊維は樹脂溶解性熱可塑性重合体で形成され、該重合体は常温において固相であるが、該重合体が所定の温度で溶解する硬化性組成物と接触すると少なくとも部分的溶解を起こす、ここで該温度は前記硬化性組成物が実質的に硬化を起こし始める温度より低くかつ該樹脂溶解性不織ベールが示す固有の溶融温度より低い、
プレフォーム。 - 前記構造層の形態が多数の隣接して位置する強化繊維層の形態でありかつ前記樹脂溶解性不織ベールが隣接して位置する対の強化繊維層の間に挟まれている請求項1記載のプレフォーム。
- 前記ベールの布面積重量が1平方メートル当たり5グラムから1平方メートル当たり80グラムの範囲でありかつ厚みがカレンダー加工の結果として20μmから90μmの範囲である請求項1記載のプレフォーム。
- 前記ベールの熱可塑性繊維がメルトフローインデックスが18から38の範囲である熱可塑性重合体で形成されている請求項1記載のプレフォーム。
- 前記ベールの熱可塑性繊維が芳香族重合体で形成されている請求項1記載のプレフォーム。
- 更に前記ベールの全体に渡って位置する多数の穴も含んで成る請求項1記載のプレフォーム。
- 液状樹脂注入工程を用いた複合品製造方法であって、
強化繊維を含んで成る多数の構造層を鋳型内に配置し、
少なくとも1の樹脂溶解性不織ベールを隣接する構造層の間に差し込んで該構造層と少なくとも1のベールでプリフォームを形成し、
ここで、上記少なくとも1のベールは、平均直径が10ミクロンから16ミクロンの範囲でありかつ直径が8ミクロン未満の繊維が20%未満である多数の樹脂溶解性繊維で構成されていて各ベールの幅方向の布面積重量偏差が10%未満である、
前記プレフォームを初期温度が75℃未満の樹脂と接触させ、
前記プレフォームを前記繊維の大部分が溶解する前以て決めておいた温度閾値に加熱した後に前記前以て決めておいた温度閾値に到達させ、そして
前記プレフォームを前記決めておいた温度閾値に前以て決めておいた時間保持しながら前記プレフォームを硬化させる、
ことを含んで成る方法。 - 前記前以て決めておいた温度閾値が180℃である請求項7記載の液状樹脂注入工程を用いた複合品製造方法。
- 前記ベールの熱可塑性繊維がメルトフローインデックスが18から38の範囲である熱可塑性重合体で形成されている請求項7記載の液状樹脂注入工程を用いた複合品製造方法。
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PCT/US2011/061297 WO2012074778A1 (en) | 2010-12-01 | 2011-11-18 | Resin-soluble veils for composite article fabrication and methods of manufacturing the same |
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EP2642007B1 (en) * | 2010-12-24 | 2018-10-24 | Toray Industries, Inc. | Method for producing carbon fiber aggregate, and method for producing carbon fiber-reinforced plastic |
CN104552934A (zh) * | 2013-10-22 | 2015-04-29 | 谢贤晓 | 织物成形方法 |
US10632718B2 (en) * | 2014-09-30 | 2020-04-28 | The Boeing Company | Filament network for a composite structure |
EP3095572A1 (en) | 2015-05-22 | 2016-11-23 | Borealis AG | Process for manufacturing of a fibre-reinforced polymer composition |
GB201513870D0 (en) * | 2015-08-05 | 2015-09-16 | Hexcel Composites Ltd | Moulding materials with improved surface finish |
WO2017200560A1 (en) * | 2016-05-19 | 2017-11-23 | Cerex Advanced Fabrics, Inc. | Items made with corrosion resistant nonwoven fabrics |
AU2016222310B2 (en) * | 2016-08-29 | 2022-09-29 | The Boeing Company | Method of locally influencing resin permeability of a dry preform |
DE102016119866A1 (de) * | 2016-10-18 | 2018-04-19 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Verfahren und Anlage zur Erzeugung eines Vlieses aus Fasern |
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US11628632B2 (en) * | 2019-03-25 | 2023-04-18 | The Boeing Company | Pre-consolidated charges of chopped fiber for composite part fabrication |
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US7211530B2 (en) * | 2003-09-24 | 2007-05-01 | Owens-Corning Fiberglas Technology, Inc. | Fibrous veil for Class A sheet molding compound applications |
US7682697B2 (en) * | 2004-03-26 | 2010-03-23 | Azdel, Inc. | Fiber reinforced thermoplastic sheets with surface coverings |
JP4511260B2 (ja) * | 2004-06-22 | 2010-07-28 | 旭化成せんい株式会社 | 細幅テープおよび細幅テープ状物 |
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US7252729B2 (en) * | 2004-12-29 | 2007-08-07 | Owens-Corning Fiberglas Technology Inc. | Polymer/WUCS mat for use in sheet molding compounds |
US8703630B2 (en) | 2005-05-09 | 2014-04-22 | Cytec Technology Corp | Resin-soluble thermoplastic veil for composite materials |
US9427917B2 (en) * | 2008-10-23 | 2016-08-30 | Hexcel Reinforcements | Reinforcement materials, suitable for the constitution of composite parts |
US8652371B2 (en) * | 2008-11-20 | 2014-02-18 | Cytec Technology Corp. | Constant pressure infusion process for resin transfer molding |
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BR112013012884A2 (pt) | 2019-01-08 |
AU2011336966B2 (en) | 2013-11-21 |
BR112013012884B1 (pt) | 2021-03-02 |
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ES2525170T3 (es) | 2014-12-18 |
US20120141728A1 (en) | 2012-06-07 |
EP2646500B1 (en) | 2014-09-03 |
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US9902118B2 (en) | 2018-02-27 |
CA2817369A1 (en) | 2012-06-07 |
KR101784543B1 (ko) | 2017-10-11 |
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US20150091216A1 (en) | 2015-04-02 |
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