CA2817683C - Controlled fiber-matrix adhesion for polymer fiber composites - Google Patents

Controlled fiber-matrix adhesion for polymer fiber composites Download PDF

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Publication number
CA2817683C
CA2817683C CA2817683A CA2817683A CA2817683C CA 2817683 C CA2817683 C CA 2817683C CA 2817683 A CA2817683 A CA 2817683A CA 2817683 A CA2817683 A CA 2817683A CA 2817683 C CA2817683 C CA 2817683C
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CA
Canada
Prior art keywords
fibers
composite article
adhesion
layers
adhesion level
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.)
Active
Application number
CA2817683A
Other languages
English (en)
French (fr)
Other versions
CA2817683A1 (en
Inventor
Mark S. Wilenski
Michael P. Kozar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Boeing Co
Original Assignee
Boeing Co
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Filing date
Publication date
Application filed by Boeing Co filed Critical Boeing Co
Publication of CA2817683A1 publication Critical patent/CA2817683A1/en
Application granted granted Critical
Publication of CA2817683C publication Critical patent/CA2817683C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0407—Transparent bullet-proof laminatesinformative reference: layered products essentially comprising glass in general B32B17/06, e.g. B32B17/10009; manufacture or composition of glass, e.g. joining glass to glass C03; permanent multiple-glazing windows, e.g. with spacing therebetween, E06B3/66
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • 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
    • B32B5/00—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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • B32B5/12—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 structural features of a fibrous or filamentary layer characterised by the relative arrangement of fibres or filaments of different layers, e.g. the fibres or filaments being parallel or perpendicular to each other
    • 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
    • B32B5/00—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
    • B32B5/14—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 a layer differing constitutionally or physically in different parts, e.g. denser near its faces
    • 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
    • B32B5/00—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
    • 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
    • B32B5/24—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 one layer being a fibrous or filamentary layer
    • B32B5/26—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 one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0471—Layered armour containing fibre- or fabric-reinforced layers
    • F41H5/0485—Layered armour containing fibre- or fabric-reinforced layers all the layers being only fibre- or fabric-reinforced layers
    • 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
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B32B2260/023—Two or more layers
    • 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
    • B32B2571/00—Protective equipment
    • B32B2571/02—Protective equipment defensive, e.g. armour plates or anti-ballistic clothing
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/40—Weight reduction
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • 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.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Laminated Bodies (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
CA2817683A 2010-12-15 2011-11-09 Controlled fiber-matrix adhesion for polymer fiber composites Active CA2817683C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US12/968,514 US9857148B2 (en) 2010-12-15 2010-12-15 Controlled fiber-matrix adhesion in polymer fiber composites
US12/968,514 2010-12-15
PCT/US2011/060025 WO2012082266A1 (en) 2010-12-15 2011-11-09 Controlled fiber-matrix adhesion for polymer fiber composites

Publications (2)

Publication Number Publication Date
CA2817683A1 CA2817683A1 (en) 2012-06-21
CA2817683C true CA2817683C (en) 2019-01-22

Family

ID=45418756

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2817683A Active CA2817683C (en) 2010-12-15 2011-11-09 Controlled fiber-matrix adhesion for polymer fiber composites

Country Status (10)

Country Link
US (1) US9857148B2 (enExample)
EP (2) EP3351889B1 (enExample)
JP (2) JP6071899B2 (enExample)
KR (2) KR101920093B1 (enExample)
CN (1) CN103282737B (enExample)
AU (1) AU2011341610B2 (enExample)
CA (1) CA2817683C (enExample)
ES (1) ES2672093T3 (enExample)
RU (1) RU2592788C2 (enExample)
WO (1) WO2012082266A1 (enExample)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9242427B2 (en) 2010-12-15 2016-01-26 The Boeing Company Coupled fibers in composite articles
US10005256B2 (en) * 2012-06-14 2018-06-26 The Boeing Company Selectively weakened stretched films
US9550881B2 (en) 2013-03-15 2017-01-24 Google Inc. Chopped-fibers with axial property gradient for molded parts
PL3030856T3 (pl) * 2013-08-07 2018-11-30 Dsm Ip Assets B.V. Arkusze odporne balistycznie, wyroby zawierające takie arkusze i sposoby ich wytwarzania
CN107407544B (zh) * 2015-02-06 2020-09-29 帝斯曼知识产权资产管理有限公司 防弹片材以及所述片材的用途
WO2017072053A1 (de) * 2015-10-26 2017-05-04 Covestro Deutschland Ag Mehrschichtiger faserverbundwerkstoff
JP2018533503A (ja) * 2015-10-26 2018-11-15 コベストロ、ドイチュラント、アクチエンゲゼルシャフトＣｏｖｅｓｔｒｏ Ｄｅｕｔｓｃｈｌａｎｄ Ａｇ 多層繊維複合体
US10974841B2 (en) 2018-02-26 2021-04-13 The Boeing Company Kinetic energy absorption method and kinetic energy absorptive, reinforced, composite article
JP6719495B2 (ja) * 2018-03-06 2020-07-08 株式会社Ｓｕｂａｒｕ プリフォーム賦形方法、複合材成形方法及び複合材
US11719514B2 (en) 2019-12-09 2023-08-08 The Boeing Company Ballistic panel and method of making a ballistic panel
US11852443B2 (en) 2019-12-09 2023-12-26 The Boeing Company Ballistic panel and method of making a ballistic panel
CN114993111B (zh) * 2022-06-08 2023-10-31 武汉美琪林新材料有限公司 复合防弹陶瓷及其制备工艺

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5116069B2 (enExample) * 1972-09-22 1976-05-21
US4322476A (en) * 1979-12-12 1982-03-30 General Electric Company Impact resistant laminate
US4400425A (en) * 1980-03-21 1983-08-23 Vladimir Vanha High impact chemically activated polyester fiber reinforced plastic composite
DE3323855C1 (de) * 1983-07-01 1984-11-29 MTU Motoren- und Turbinen-Union München GmbH, 8000 München Faserverstaerkter Verbundwerkstoff sowie Verfahren zur Herstellung einer Verbundwerkstoff-Faser
US5229199A (en) 1985-08-13 1993-07-20 E. I. Du Pont De Nemours And Company Rigid composite comprising woven aramid fabrics coated with an adhesion modifier and embedded in a matrix resin
JPS6265212A (ja) 1985-09-17 1987-03-24 Canon Electronics Inc 磁気コア
JPS6265212U (enExample) * 1985-10-16 1987-04-23
JPH089200B2 (ja) 1989-04-27 1996-01-31 日本鋼管株式会社 繊維強化プラスチックシート及びその製造法
WO1991000490A1 (en) * 1989-06-30 1991-01-10 Allied-Signal Inc. Ballistic-resistant composite article
SU1740968A1 (ru) * 1990-06-19 1992-06-15 Центральный научно-исследовательский институт специального машиностроения Пулезащитный материал
JP3114741B2 (ja) 1991-04-03 2000-12-04 三菱レイヨン株式会社 プリプレグ
JPH0691816A (ja) 1991-10-29 1994-04-05 Agency Of Ind Science & Technol 耐衝撃損傷性複合材料
US5665450A (en) 1992-08-21 1997-09-09 The Curators Of The University Of Missouri Optically transparent composite material and process for preparing same
JPH06126902A (ja) 1992-10-19 1994-05-10 Toyobo Co Ltd 繊維強化複合材料
JPH09254295A (ja) 1996-03-22 1997-09-30 Gamakatsu Co Ltd 板状体とその製造方法
CN1221394A (zh) * 1996-04-10 1999-06-30 Dsm有限公司 增加已辐射固化内侧底涂层与玻璃光纤间粘结力的方法
CA2271137A1 (en) 1997-01-06 1998-10-22 Frank J. Macdonald Impact and puncture resistant panels
DE19932274A1 (de) 1999-07-05 2001-01-18 Inst Polymerforschung Dresden Faserverbundwerkstoff und Verfahren zu seiner Herstellung
DE10011701A1 (de) 2000-03-10 2001-09-27 Verseidag Indutex Gmbh Flexibles Laminat
JP4531207B2 (ja) * 2000-06-23 2010-08-25 ダイヤテックス株式会社 布状体積層透明シート及びその製造方法
RU2251065C2 (ru) * 2002-05-06 2005-04-27 Автономная некоммерческая организация "Центральный научно-исследовательский и опытно-конструкторский институт "Центр перспективных исследований" (АНО ЦНИОКИ "ЦПИ") Листовая броня преимущественно для средств индивидуальной защиты
JP2004292992A (ja) * 2003-03-27 2004-10-21 Ichimura Sangyo Co Ltd 扁平織物、その積層体、それらを用いたプリプレグ、繊維強化プラスチック並びに複合成型物、及びこれらを用いた防護製品
AU2005204052B2 (en) * 2004-01-07 2010-07-22 Dsm Ip Assets B.V. Process for the manufacture of curved objects
US7039282B2 (en) * 2004-06-30 2006-05-02 Corning Cable Systems Llc Optical fiber array with an intermittent profile and method for manufacturing the same
US20080075933A1 (en) 2004-07-02 2008-03-27 Dsm Ip Assets B.V. Flexible Ballistic-Resistant Assembly
JP2006272837A (ja) * 2005-03-30 2006-10-12 Dainippon Ink & Chem Inc 積層構造体
EP1885553A2 (en) 2005-05-18 2008-02-13 Composix Co. Ballistic laminate structure
EP1912788A4 (en) * 2005-07-29 2011-12-28 Composix Co LAMINATED BALLISTIC STRUCTURE
US7622405B1 (en) * 2006-09-26 2009-11-24 Honeywell International Inc. High performance same fiber composite hybrids by varying resin content only
EP1923420B1 (de) * 2006-11-14 2009-02-25 Bond Laminates Gmbh Faserverbund-Werkstoff und Verfahren zu dessen Herstellung
US20100170021A1 (en) * 2007-02-16 2010-07-08 Martin Antonius Van Es Ballistic-resistant moulded article and process for obtaining such article
US8323436B2 (en) 2007-03-28 2012-12-04 The United States Of America As Represented By The Secretary Of The Army Transparent, reinforced, composite fiber and articles made therefrom
JP5125867B2 (ja) * 2008-08-07 2013-01-23 東レ株式会社 強化繊維基材、積層体および複合材料

Also Published As

Publication number Publication date
CN103282737B (zh) 2015-11-25
RU2592788C2 (ru) 2016-07-27
JP6071899B2 (ja) 2017-02-01
CN103282737A (zh) 2013-09-04
JP6546905B2 (ja) 2019-07-17
US9857148B2 (en) 2018-01-02
JP2017114127A (ja) 2017-06-29
RU2013132313A (ru) 2015-01-20
AU2011341610A1 (en) 2013-05-23
KR20180129916A (ko) 2018-12-05
WO2012082266A1 (en) 2012-06-21
EP2652432B1 (en) 2018-03-07
JP2014506200A (ja) 2014-03-13
AU2011341610B2 (en) 2015-11-19
US20120156452A1 (en) 2012-06-21
KR20130138788A (ko) 2013-12-19
CA2817683A1 (en) 2012-06-21
EP2652432A1 (en) 2013-10-23
KR101920093B1 (ko) 2018-11-19
ES2672093T3 (es) 2018-06-12
KR102002744B1 (ko) 2019-07-23
EP3351889A1 (en) 2018-07-25
EP3351889B1 (en) 2021-09-29

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