WO2015197148A1 - Structure composite thermodurcissable renforcée par des fibres comportant un élément d'application de charge thermodurcissable renforcé par des fibres - Google Patents

Structure composite thermodurcissable renforcée par des fibres comportant un élément d'application de charge thermodurcissable renforcé par des fibres Download PDF

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Publication number
WO2015197148A1
WO2015197148A1 PCT/EP2015/000889 EP2015000889W WO2015197148A1 WO 2015197148 A1 WO2015197148 A1 WO 2015197148A1 EP 2015000889 W EP2015000889 W EP 2015000889W WO 2015197148 A1 WO2015197148 A1 WO 2015197148A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber
thermoplastic
molded body
impregnated
insert
Prior art date
Application number
PCT/EP2015/000889
Other languages
German (de)
English (en)
Inventor
Julius Rausch
David Roquette
Tobias KLEFFEL
Daniel Kugele
Christoph HOLLÄNDER
Original Assignee
Audi Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Audi Ag filed Critical Audi Ag
Priority to EP15719147.9A priority Critical patent/EP3160721A1/fr
Publication of WO2015197148A1 publication Critical patent/WO2015197148A1/fr

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Classifications

    • 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
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/86—Incorporated in coherent impregnated reinforcing layers, e.g. by winding
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0078—Measures or configurations for obtaining anchoring effects in the contact areas between layers
    • B29C37/0082—Mechanical anchoring
    • 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
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/78—Moulding material on one side only of the preformed part
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
    • B29C45/14786—Fibrous material or fibre containing material, e.g. fibre mats or fibre reinforced material

Definitions

  • the invention relates to a FRP structure with a load introduction element according to the preamble of patent claim 1.
  • FRP fiber composite plastic
  • load introduction elements for example for low loads
  • load introduction elements are glued in a separate process step.
  • various surface treatments such as surface roughening or UV treatments, are carried out. Disadvantages of this are the additional process steps, wherein in particular the surface treatments are expensive and expensive.
  • DE 10 2012 207 1 18 A1 likewise discloses a FRP structure with an insert part in order to connect further force-transmitting components to the FRP structure via such an insert part.
  • This FRP structure consists of a carrier of either a fiber reinforced thermoset, a non-reinforced thermoplastic or a glass fiber reinforced thermoplastic material.
  • an insert of a fiber-reinforced plastic is embedded.
  • a core is first produced by means of a pultrusion process (also called a pultrusion process) in which an impregnated, textile semi-finished product is pulled through a matrix and the fibers are exclusively oriented in the pullout direction.
  • the pultrided core is wrapped by means of pull-wrap or pull-braiding with a fiber layer or fiber fabric made of long fiber strands, so that a different fiber direction results compared to the fibers of the core.
  • this represents a very expensive process for producing such an FRP structure.
  • DE 201 11 1 1 743 A1 describes an FRP structure with at least one textile insert in combination with a thermoplastic matrix and stiffening ribs injection-molded from thermoplastic material. These stiffening ribs contain a relatively high volume fraction of at least 30% short fibers from a reinforcement part material.
  • the object of the invention is to provide a FRP structure of the type mentioned, in which the load introduction element is integrated with an improved form fit, ie with better mechanical properties and higher transferable forces in the FRP structure with a thermoset matrix.
  • This object is achieved by a FRP structure having the features of patent claim 1.
  • Such an FRP structure which comprises at least one fiber structure embedded in a thermosetting matrix and at least one load introduction element, is characterized according to the invention in that
  • the load introduction element has a thermoplastic molded body, which is produced by partial impregnation of a fiber insert by means of thermoplastic injection molding, and
  • thermosetting matrix The non-impregnated portion of the arranged on the fiber structure with the thermoplastic molded body fiber insert is impregnated together with the fiber structure with the thermosetting matrix.
  • thermoplastic semi-finished fiber insert as thermoplastic matrix and the non-impregnated portion of this semi-finished fiber impregnated together with the fiber structure with the thermoset matrix, so that in this way also creates a positive connection.
  • a high adhesion and a positive connection with high connection quality are achieved between the fiber feeder and the respectively involved matrix systems.
  • a significantly improved positive connection is achieved, so that a tension transfer between the thermoplastic region, that is to say the first region and the second region, is made possible.
  • thermoset structure Due to the positive connection between the reinforcing fibers or the semifinished fiber product and the respective matrix systems exist between the thermoset structure and its thermoplastic load introduction element no adhesion problems, so that significantly higher forces can be transmitted. Since the thermoplastic molding is made of plastic, a further structure, for example, can be connected directly thereto by means of a screw connection.
  • load introduction element by means of a thermoplastic processing process can be carried out economically and then easily integrated into the FRP structure by means of a thermosetting processing process.
  • the load introduction elements are, for example, inserted directly into the injection or pressing tools for producing a thermoset component. This eliminates additional processes for mounting conventional load introduction elements.
  • the thermoplastic molded body forms a composite with the fiber insert over at least one impregnated region of the fiber insert or semifinished fiber product.
  • an optimal positive connection between the semi-finished semifinished product and the thermoplastic molding is achieved.
  • the thermoplastic molded body forms a composite with the fiber insert over a plurality of impregnated regions of the fiber insert or of the semi-finished fiber product. This leads to an improved positive connection between the thermoplastic molding and the thermoset matrix.
  • thermoplastic molding to form a mechanical interface of the thermoplastic molded body on a connecting element, which is prepared by molding in the production of the thermoplastic molding.
  • a connecting element may, for example, be designed as a sleeve with or without thread or as a threaded bolt, etc., and be made of metal or plastic.
  • the fiber feeder or the semi-finished fiber product is formed from textile fibers and / or metal fibers, wherein the fiber structure is a May be a fabric, a mat, a nonwoven, a braid, a knitted fabric and / or a knitted fabric.
  • thermoplastic molded body a cuboid, frusto-conical or a truncated pyramidal shape, which can be realized especially in the conical shapes, an undercut in the field of thermoset matrix of the FRP structure.
  • thermoplastic molded body can also have reinforcing ribs.
  • Figure 1 is a schematic representation of a FRP structure with a
  • FIG. 2 shows a schematic representation of a further embodiment of a load introduction element in a sectional view
  • FIG. 3 shows a schematic illustration of the load introduction element according to FIG. 2 in a plan view
  • FIG. 4 is a schematic representation of another embodiment of the load introduction element of Figure 2.
  • FIG. 1 shows an FRP structure 1 with a load introduction element 10, wherein this FRP structure 1 shown represents part of a thermoset component.
  • This load introduction element 10 comprises a fiber insert 1 1 as semifinished fiber product, which is partially impregnated with a thermoplastic matrix to produce a thermoplastic molding body 12, so that an impregnated region 1 1.2 and an unimpregnated, ie dry, region 1.1 are formed.
  • the dry fiber feeder 1 1 is inserted and impregnated with a tool stroke in the range 1 1 .2 of Faserein casual 1 1 with the thermoplastic matrix and in this case the thermoplastic molding 12 produced.
  • appropriate seals are introduced into the tool; alternatively, the area 1 1 .1 can be sealed by local overpressing.
  • the component geometry of the thermoset component to be produced determines the shape of the thermoplastic molding 12. According to FIGS. 1 to 4, this thermoplastic molding 12 has a frustoconical shape.
  • thermoplastic molded body It is also possible to realize other shapes, such as, for example, a truncated pyramidal or cylindrical shape, or to cast ribs onto the thermoplastic molded body.
  • all forms are possible, which can be realized by injection molding. Outside the impregnated region 1 1.2, the fiber insert 11 is not impregnated with the thermoplastic matrix; this non-impregnated region 11 1 of the fiber insert 11 remains dry.
  • thermoplastic molded body 12 forms a mechanical interface to fasten other components can.
  • this thermoplastic molded body 12 has a threaded bushing as a connecting element 13, via which the other components can be connected.
  • This threaded bush can be produced simultaneously with the production of the thermoplastic molded body 12, or subsequently hot or cold pressed into the thermoplastic molded body 12. Alternatively, threaded bolts can be integrated into the thermoplastic molding.
  • the load introduction element 10 is now used for producing the FRP structure 1 of a thermoset component according to FIG.
  • the thermoplastic molded body 12 is inserted with the partially impregnated textile semi-finished fiber 1 1 together with a fiber structure 2 in a tool for processing thermoset molding compounds, so that the fiber insert 1 1 of the load application element 10 rests on this fiber structure 2.
  • the non-impregnated region 1 1.1 of the fiber insert 1 is impregnated together with the vehicle structure 2 with a duroplastic matrix 3.
  • FIG. 1 shows the FRP structure 1 after the thermosetting processing process, in which the thermoplastic molded body 12 is connected with its base 12.1 over the impregnated region 11.2 all-over to the fibers of the fiber insert 11.
  • thermosetting processing process impregnated in thermosetting processing process and thus also achieved a positive connection between the non-impregnated region 11 .1 and the thermosetting matrix system.
  • thermoplastic molded body 12 forms a mechanical interface to fasten other components can.
  • the further component for example, by means of a screw directly to this thermoplastic molded body 12 are screwed.
  • a connecting element 13 As a mechanical interface and a threaded sleeve can be used as a connecting element 13, via which the other components can be connected.
  • a load introduction element 10 according to the invention is shown in FIG. 2, in which the thermoplastic molded body 12 has such a threaded sleeve 13. Otherwise, this load introduction element 10 according to FIG. 2 corresponds to that of the FVK structure 1 according to FIG. 1.
  • Such a connecting element 13 may be made of plastic or metal.
  • the threaded sleeve 13 is encapsulated simultaneously with the production of the thermoplastic molding 12, or subsequently hot or cold pressed into the thermoplastic molding 12.
  • the thermoplastic molded body 12 is connected with its base 12.1 over its entire surface with the fibers of the fiber insert 1 1 in the range 1 1.2.
  • the load introduction element 10 shown in FIG. 4 is formed with a thermoplastic molded body 12, on whose base surface 12.1 an annular flange 12.2 is formed, which forms the thermoplastic composite with the impregnated region 11.21 of the fiber insert 11.
  • annular flange 12.2 In addition to this annular flange 12.2, further concentric nested further annular flanges may be provided, so that concentrically nested annular surfaces arise as the geometry of the impregnated regions 1 1.2 of the fiber insert 1, in whose interspaces the thermoset matrix 3 is produced in the production of an FRP structure 1 can flow according to FIG.
  • the load introduction element 10 according to FIG. 4 is produced in the same way as that according to FIG. Instead of a threaded sleeve, this load introduction element 10 to form a mechanical interface on a threaded bolt made of metal or plastic as a connecting element 14.
  • the load introduction element 10 according to FIG. 4 is used instead of that according to FIG. 1 for producing a FRP structure 1.
  • FIG. 5 shows a plan view of another load introduction element 10 with a thermoplastic molding 12 with fiber insert 1 partially impregnated with a thermoplastic matrix.
  • the base 12.1 of the thermoplastic molding 12 has four cylindrical connection feet 12.3, which each have a composite with impregnated areas 1 1 .2 of the fiber insert 1 1 form. Outside of these circular regions 1 1.2, the fiber insert 11, ie the region 11, is not impregnated and forms a bond therewith with the thermoset matrix 3 corresponding to the FRP structure 1 according to FIG.
  • the geometry of the impregnated regions 1 1 .2 of the fiber insert 1 1 can be configured in different ways. Thus, geometric arrangements are possible below the thermoplastic molding 12, which are characterized by alternating and juxtaposed areas of exposed / dry and impregnated fibers of the fiber insert 11.

Abstract

L'invention concerne une structure composite renforcée par des fibres (1) qui comprend au moins une structure de fibres (2) incorporée dans un matrice thermodurcissable (3) et au moins un élément d'application de charge (10). L'invention est caractérisée en ce que l'élément d'application de charge (10) comprend un corps moulé thermoplastique (12) qui est produit par imprégnation partielle d'un insert de fibres (11) par moulage par injection thermoplastique, et en ce que la région non imprégnée (11.1) de l'insert de fibres (11), disposé sur la structure de fibres (2) avec le corps moulé thermoplastique (12), est imprégnée avec la matrice thermodurcissable (3) conjointement avec la structure fibreuse (2).
PCT/EP2015/000889 2014-06-25 2015-04-30 Structure composite thermodurcissable renforcée par des fibres comportant un élément d'application de charge thermodurcissable renforcé par des fibres WO2015197148A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15719147.9A EP3160721A1 (fr) 2014-06-25 2015-04-30 Structure composite thermodurcissable renforcée par des fibres comportant un élément d'application de charge thermodurcissable renforcé par des fibres

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014009446.4A DE102014009446B4 (de) 2014-06-25 2014-06-25 Duroplastische FVK-Struktur mit einem thermoplastischen und faserverstärkten Lasteinleitungselement
DE102014009446.4 2014-06-25

Publications (1)

Publication Number Publication Date
WO2015197148A1 true WO2015197148A1 (fr) 2015-12-30

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PCT/EP2015/000889 WO2015197148A1 (fr) 2014-06-25 2015-04-30 Structure composite thermodurcissable renforcée par des fibres comportant un élément d'application de charge thermodurcissable renforcé par des fibres

Country Status (3)

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EP (1) EP3160721A1 (fr)
DE (1) DE102014009446B4 (fr)
WO (1) WO2015197148A1 (fr)

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DE102016125664A1 (de) 2016-12-23 2018-06-28 Böllhoff Verbindungstechnik GmbH Bestigungseinleger für ein Bauteil aus Kunststoff-,Schaum- oder Verbundmaterial
DE102016125660A1 (de) * 2016-12-23 2018-06-28 Böllhoff Verbindungstechnik GmbH Befestigungseinleger für ein Bauteil aus Kunststoff-, Schaum- oder Verbundmaterial
DE102017204512A1 (de) * 2017-03-17 2018-09-20 Airbus Defence and Space GmbH Anbindungsoptimierung für hybride Composite-Strukturen
DE102017213727A1 (de) * 2017-08-08 2019-02-14 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Herstellen eines Bauteilverbunds sowie Bauteilverbindung
DE102017123751B4 (de) * 2017-10-12 2021-08-26 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren zur Herstellung eines aus einem faserverstärkten Kunststoff hergestellten Bauteils, Bauteil und Verwendung des Bauteils
DE102018203724A1 (de) * 2018-03-13 2019-09-19 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Herstellung eines faserverstärkten Kunststoffbauteils und faserverstärktes Kunststoffbauteil
DE102019121740A1 (de) * 2019-08-13 2021-02-18 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Herstellen eines Faser-Kunststoff-Verbundbauteils
FR3109557B1 (fr) 2020-04-22 2023-01-06 Hexcel Reinforcements Elément composite intermédiaire, procédé de fabrication et pièce composite

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FR2098457A1 (en) * 1970-07-16 1972-03-10 Permali Ltd Chemically resistant components - of duromer body and fluorocarbon lining
JPH05211909A (ja) * 1992-02-10 1993-08-24 Yoshida Kogyo Kk <Ykk> シートクッション用の面ファスナー片連結体
WO1995001741A1 (fr) * 1993-07-06 1995-01-19 Velcro Industries B.V. Insert du type a crochet et boucle utlise dans un procede de moulage
WO1996019338A1 (fr) * 1994-12-22 1996-06-27 Minnesota Mining And Manufacturing Company Procede et moule de fabrication d'un element de fixation comportant un element d'accrochage et article ainsi obtenu
WO1997020480A1 (fr) * 1995-12-06 1997-06-12 Velcro Industries B.V. Dispositif de fixation a boucles et a crochets comportant une couche contenant un metal poreux
DE10101271A1 (de) 2001-01-12 2002-08-14 Fritzmeier Composite Gmbh & Co Kunststofformteil
US20040195877A1 (en) * 2003-04-03 2004-10-07 John Demain Attaching covers to seat cushions
US20070101557A1 (en) * 2005-11-07 2007-05-10 Gallant Christopher M Bendable fastener strips
DE102011111743A1 (de) 2011-08-24 2013-02-28 Daimler Ag FVK-Bauteil und Herstellungsverfahren
DE102012207118A1 (de) 2012-04-27 2013-10-31 Bayerische Motoren Werke Aktiengesellschaft Bauteil aus Kunststoff

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DE1090849B (de) * 1952-11-11 1960-10-13 Fatege Fabrikation Tech Gewebe Verfahren zum Herstellen eines Schichtstoffes in zwei Arbeitsgaengen
DE102005008252B4 (de) * 2005-02-21 2014-03-20 Airbus Operations Gmbh Verfahren zur Herstellung eines Faserverbund-Bauelements
DE102011012900A1 (de) * 2011-03-03 2012-02-09 Daimler Ag Faserverstärktes Kunststoffverbundbauteil und dessen Herstellung
DE102012216812A1 (de) * 2011-09-22 2013-03-28 Cetex Institut für Textil- und Verarbeitungsmaschinen gemeinnützige GmbH Faserverbundhalbzeug, aus diesem Faserverbundhalbzeug hergestellter Halbzeugaufbau sowie Verfahren zu deren Herstellung
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2098457A1 (en) * 1970-07-16 1972-03-10 Permali Ltd Chemically resistant components - of duromer body and fluorocarbon lining
JPH05211909A (ja) * 1992-02-10 1993-08-24 Yoshida Kogyo Kk <Ykk> シートクッション用の面ファスナー片連結体
WO1995001741A1 (fr) * 1993-07-06 1995-01-19 Velcro Industries B.V. Insert du type a crochet et boucle utlise dans un procede de moulage
WO1996019338A1 (fr) * 1994-12-22 1996-06-27 Minnesota Mining And Manufacturing Company Procede et moule de fabrication d'un element de fixation comportant un element d'accrochage et article ainsi obtenu
WO1997020480A1 (fr) * 1995-12-06 1997-06-12 Velcro Industries B.V. Dispositif de fixation a boucles et a crochets comportant une couche contenant un metal poreux
DE10101271A1 (de) 2001-01-12 2002-08-14 Fritzmeier Composite Gmbh & Co Kunststofformteil
US20040195877A1 (en) * 2003-04-03 2004-10-07 John Demain Attaching covers to seat cushions
US20070101557A1 (en) * 2005-11-07 2007-05-10 Gallant Christopher M Bendable fastener strips
DE102011111743A1 (de) 2011-08-24 2013-02-28 Daimler Ag FVK-Bauteil und Herstellungsverfahren
DE102012207118A1 (de) 2012-04-27 2013-10-31 Bayerische Motoren Werke Aktiengesellschaft Bauteil aus Kunststoff

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Title
See also references of EP3160721A1 *

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Publication number Publication date
DE102014009446A1 (de) 2015-12-31
EP3160721A1 (fr) 2017-05-03
DE102014009446B4 (de) 2020-10-15

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