EP3347511A1 - Demi-produit textile - Google Patents

Demi-produit textile

Info

Publication number
EP3347511A1
EP3347511A1 EP16763826.1A EP16763826A EP3347511A1 EP 3347511 A1 EP3347511 A1 EP 3347511A1 EP 16763826 A EP16763826 A EP 16763826A EP 3347511 A1 EP3347511 A1 EP 3347511A1
Authority
EP
European Patent Office
Prior art keywords
thread
threads
warp
weft
product according
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.)
Withdrawn
Application number
EP16763826.1A
Other languages
German (de)
English (en)
Inventor
Roy GLUTHMANN
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.)
Hermes Schleifmittel GmbH and Co KG
Original Assignee
Hermes Schleifmittel GmbH and Co KG
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 Hermes Schleifmittel GmbH and Co KG filed Critical Hermes Schleifmittel GmbH and Co KG
Publication of EP3347511A1 publication Critical patent/EP3347511A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
    • D03D15/267—Glass
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/04—Heat-responsive characteristics
    • D10B2401/041—Heat-responsive characteristics thermoplastic; thermosetting
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/063—Load-responsive characteristics high strength
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/02—Reinforcing materials; Prepregs

Definitions

  • the invention relates to a textile semi-finished product, with Wenig ⁇ least one warp thread, at least one weft thread and at least one connecting yarn.
  • Such products are required for the production of thermoplastic fiber composite structures, which are produced by pressing under the influence of temperature.
  • thermoplastic matrix component and verbin ⁇ det with the reinforcing layers to a high-strength composite material.
  • Her ⁇ alternate method is for a variety of industrially produced in large series moldings, especially those in
  • EP 0 361 796 A2 describes a moldable textile semifinished product, wherein a plurality of superimposed layers are each formed from adjacent, not interwoven, threads and a matrix component is introduced into these layers.
  • This may consist of thermoplastic or thermosetting resin, metal or ceramic and be introduced in the form of threads, tapes, film-like layers, woven or non-woven materials.
  • the reinforcing ⁇ layers and the matrix components are sewn together. It It is proposed to introduce thermoplastic threads together with a reinforcing thread. Because of the different stretch characteristics of reinforcing filaments and thermoplastic filaments, this inevitably leads to egg nem bogigen, non-stretched over Verstärkungsfä ⁇ .
  • the invention is based on the object to provide a textile semifinished product of the type mentioned, which is kos ⁇ ten redesign on widely available machines to produce and defined, reproducible properties, in particular ⁇ special strength properties.
  • This object is achieved by the subject matter of the Pa ⁇ tentificat 1 and 2.
  • the invention is thus an aforementioned semi-finished textile, wherein either the at least one warp yarn, a reinforcing layer bil ⁇ det, and the at least one weft thread is a thermoplastic shear yarn is (variant of claim 1) or vice versa (variant of claim 2). Warp threads and weft threads stretch in each case in one plane, these planes are arranged substantially parallel to each other.
  • An inventive textile semi-finished product is a semi-finished ⁇ product from which can be manufactured in a fiber composite workpiece or -Material with melting thermoplastic constituents under the action of heat and preferably pressure.
  • the terms "warp threads”, “weft threads” and “Veritatisfä ⁇ den” include corresponding systems, which preferably do not consist of a single thread, but from yarn sheets.
  • a group of threads usually comprises a plurality of individual threads, which may be identical or different and made of the same or different materials. Yarns may possibly also on the basis of different types of yarn, z. Staple fiber or filament yarn.
  • the reinforcing layer adds to the workpiece from the semifinished product forth ⁇ made strength, especially tensile strength in the axial direction of the stretched extending filaments or groups of filaments. Accordingly, it is in the ER inventive semi-finished product is not a tissue that always has ei ⁇ nen bogigen thread run.
  • the connecting thread holds monofilaments or bundles of threads of the reinforcing fibers and the thermoplastic matrix layer (thermoplastic weft thread in the variant of claim 1, thermoplastic warp thread in the variant of claim 2) and connects them. Holding means that the connection thread at least contributes to the Subject Author ⁇ fenden threads spatially fixed to each other or are limited in their freedom of movement sawn.
  • the function of the Hal ⁇ least is covered mainly by covering or wrapping around the warp and weft threads.
  • the semifinished product according to the invention is a biaxial clutches based on the Kettengewirktechnologie with parallel weft insertion ⁇ .
  • the basic textile structure consists of warp, weft and connecting thread, wherein the connecting thread Mesh forms.
  • the respective yarn sheets preferably consist of mutually parallel individual threads. Kettfadenscharen and weft threads advance preferably approximately orthogonal to each other.
  • the semi-finished product preferably comprises a thermoplastic Ver ⁇ tying thread, a layer of reinforcing filaments and a layer of thermoplastic matrix filaments.
  • the invention provides a semi-finished product, whose Verstärkungsfä ⁇ are aligned unidirectionally and that therefore can be used as a unidirectional patch for the manufacture ⁇ development of fiber composite structures with complex shapes and load directions. Depending on the expected
  • semifinished products according to the invention can be combined with one another in such a way that the respective unidirectionally oriented reinforcing layers point in the direction of loading to be expected.
  • semi-finished products according to the invention can be arranged one above the other with appropriately aligned reinforcing fibers.
  • the invention thus provides a universal and flexible Struktur ⁇ releasing semi-finished, by means of which can be prepared a variety of complex composite structures in a simple and economical way.
  • the independent claims 1 and 2 of the present patent application define a semifinished textile product with warp threads and weft threads made of different materials (reinforcing threads or reinforcing layer or thermoplastic threads).
  • warp threads on the one hand and weft threads on the other hand consist of said different materials.
  • the formulation used in the claims that the weft (or warp) a thermoplastic Fa is the means that it is composed exclusively of thermoplasti ⁇ rule materials. In other words, it is a semi-finished product in which warp threads and weft threads of the corresponding different materials were fed during knit production. Not, several semi-finished products or layers of Ge ⁇ Am working in which consist in each knitted warp threads and weft threads of a uniform material, superimposed on each other is to be arranged by the invention.
  • the preparation takes place by means of a knitting machine with weft insertion pa ⁇ rallelem or a raschel knitting machine. It is thus possible to use widely used machines for producing a semifinished product according to the invention. Additional devices, for example for introducing nonwoven layers or other textile elements as reinforcing or matrix component are not required.
  • the machine as described above, warp and
  • the weft or alternatively the warp thread consists of thermoplastic material and forms the matrix thread.
  • the handle "thermoplastic" is to be understood in the context of the invention as a property of a fabric or a thread material to melt in the course of further processing of Halb ⁇ tool under temperature and preferably pressure to produce a composite.
  • the matrix yarn loses all or part of its thread ⁇ structure and changes into a binding the reinforcing fibers and / or embedding matrix material.
  • Suitable thermoplastic materials preferably melt at temperatures between 150 and 300 ° C. Suitable are ther ⁇ moplastic polymers such. As polyester, polyamide or polypropylene. The materials of the reinforcing layer do not melt under these conditions, or only to a small extent, but rather retain largely their shape, structure and strength.
  • the connecting thread always penetrates the reinforcing layer in the area of the free spaces between the threads or the thread coulters. The penetration of a reinforcing layer along with damage and a deflection of threads is thereby avoided. Thus, neither the warp nor the weft thread are pierced by the connecting thread. They are thus weakened neither by breaking or tearing individual thread elements, nor is the principle rectilinear extension of the threads or the yarn sheet changed.
  • the weft thread is executed as a full shot. If the reinforcing layer is formed by weft threads, in this embodiment, the maximum length of the reinforcing threads corresponds to the production width of the semifinished product.
  • a full shot (also a paral- lel shot) is a transverse straight thread stretch over the entire width of the warp knit and is limited only by the edge of the warp knitted fabric. The full shot is held by stitches of another thread system.
  • the warp thread is preferably designed as a standing thread. It thus forms a longitudinally geradli ⁇ nig extending thread line.
  • a filament thread is a length of thread that extends in a straight line in the warp knit longitudinally between two wales of another thread system and that is not bounded by stitches or handles of the same thread.
  • the at least one connection ⁇ thread is preferably a thermoplastic yarn.
  • Warp thread and weft thread preferably extend substantially orthogonal to each other.
  • the semifinished product according to the invention can be modularly quizverarbei ⁇ tet.
  • a layer of the semifinished product with a unidirectional reinforcement layer can be combined with further layers, for example where the main loading direction of the reinforcing layer extends in a different direction, thus forming an angle with the Hauptbe ⁇ lastungscardi the reinforcing layer of the first layer of the semifinished product.
  • the semifinished product constructive and material are not aligned to the specific requirements of each use. Rather, modules consisting of a matrix layer and a unidirectional reinforcing layer can be produced and then specifically combined depending on the strength requirements. Decisive is both the number of reinforcing layers used, as well as their orientation to each other, which in particular the main load directions can be considered.
  • a precursor is first produced specifically for the corresponding application, in which a number of semifinished products (layers) according to the invention with appropriate orientation of the reinforcing layers are combined under the effect of temperature and pressure, as a rule processed into plates.
  • This precursor (plates) is then processed in the appropriate form to the reinforced end product.
  • Be ⁇ affects the joining of the semi-finished products to a preliminary product that the melting of the matrix layer and the penetration and integration of the reinforcing fibers with the matrix material under the defined conditions of this Pre-fabrication step takes place reliably and reproducibly.
  • the semifinished product of the invention can supply step in this prefabrication under heat on a flat surface and pressed plates (modules) assembled ⁇ the.
  • Each module preferably consists of a combination of several layers and thus has a plurality of respectively unidirectionally extending reinforcing layers with preferably mutually differing orientation. Number and orientation (axis perpendicular to the flat direction of extension) of the layers are specifically combined depending on the requirements - especially the strength requirements - of the end ⁇ product.
  • the thus prefabricated power flow module is pressed by means of a desired component corresponding negative mold under the action of heat.
  • the modules obtained by means of the prefabrication step or the end products produced therefrom have a are very powerful strength and are suitable for demanding applications to ⁇ .
  • the threads of the reinforcing layers are structurally completely stretched and pa ⁇ rallel to each other, furthermore, they have no damage or defects on. Accordingly, the strength values of the modules are subject to only very slight fluctuations, and correspondingly their use can be calculated mathematically. An additional use of material to compensate for fluctuations in strength is thus not required.
  • the invention thus also provides a textile semi ⁇ convincing as a precursor, having at least two layers of reinforcing ⁇ which extend in substantially mutually pa- rallelen levels.
  • the individual threads or sets of threads of at least two of the reinforcement layers preferably extend at an angle to one another. This allows adaptation to the main load directions of the intended end product.
  • thermoplastic warp or weft thread (matrix thread) and thermoplastic connecting thread differ from each other.
  • the melting temperature of the thermoplastic connecting thread is less than that of the thermoplastic matrix thread. This can be achieved in a corresponding temperature control, first, the melting of the connecting thread, wherein the thermoplastic see matrix thread is maintained in shape.
  • the composite of the yarn layer loosens and the threads can be pressed against the mold (good drapability) for improved flexibility and adaptability. move.
  • the melting of the thermoplastic matrix thread takes place at a higher temperature and the textile structure has significantly lower stresses at this point in time.
  • the textile composite still exists during melting of the matrix component.
  • ther ⁇ moplastischer connecting thread has to be chosen, the melting temperature exceeds the melting temperature of the matrix yarn.
  • the individual filaments or groups of filaments of the reinforcing layer containing fibers selected from the group consisting of glass fibers, carbon ⁇ fibers, basalt fibers, high-strength polymer fibers and mixtures thereof.
  • the fibers or Fadenscha ⁇ ren are processed with commercially available textile machines.
  • the invention further fiber composite workpieces or -Werkstoffe, obtainable by heating and forming a textile semi-finished product according to the invention.
  • FIG. 1 shows schematically the structure of a textile semifinished product according to the invention.
  • the drawing (FIG. 1) shows the exemplary embodiment with a reinforcing layer consisting of weft threads (4) in one plane and a matrix layer consisting of thermoplastic warp threads (2, 3) in a further plane. Both the warp and weft threads are straight and stretched parallel to each other. The cohesion as a textile fabric is ensured by the connecting thread 1.
  • the connecting threads (1) always penetrate the plane of the reinforcing fiber strands (4) in the free spaces between their yarn bundles.
  • the present embodiment forms a stable, largely distortion-free, consisting of exactly positioned textile elements unidirectional composite. It enables draping in three-dimensional shapes and melting of the thermoplastic matrix component, a good sliding of the reinforcing layer.
  • the textile semi-finished product was based on a knitted fabric with
  • Basis weight of the textile semifinished product approx. 480 g / m 2

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Knitting Of Fabric (AREA)
  • Woven Fabrics (AREA)

Abstract

La présente invention concerne un demi-produit textile qui comporte au moins un fil de chaîne (2, 3), au moins un fil de trame (4) et au moins un fil de liaison (1). Selon l'invention, le fil de chaîne forme une couche de renforcement et le fil de trame est un fil thermoplastique, ou l'inverse. Les fils de chaîne et les fils de trame s'étendent chacun dans un plan, et ces plans sont sensiblement parallèles l'un à l'autre.
EP16763826.1A 2015-09-11 2016-09-12 Demi-produit textile Withdrawn EP3347511A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP15184833 2015-09-11
PCT/EP2016/071440 WO2017042384A1 (fr) 2015-09-11 2016-09-12 Demi-produit textile

Publications (1)

Publication Number Publication Date
EP3347511A1 true EP3347511A1 (fr) 2018-07-18

Family

ID=54106255

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16763826.1A Withdrawn EP3347511A1 (fr) 2015-09-11 2016-09-12 Demi-produit textile

Country Status (3)

Country Link
EP (1) EP3347511A1 (fr)
CN (1) CN108026673A (fr)
WO (1) WO2017042384A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619399B1 (fr) * 1987-08-11 1991-10-25 Brochier Sa Structure textile pour la realisation de stratifies a hautes proprietes mecaniques
JPS6445841A (en) * 1987-08-13 1989-02-20 Nitto Boseki Co Ltd Fabric for fiber reinforced thermoplastic resin laminate material
GB8822521D0 (en) * 1988-09-26 1988-11-02 Tech Textiles Ltd Method of producing formable composite material
FR2645881B1 (fr) * 1989-04-14 1992-06-12 Hexcel Genin Sa Etoffe thermo-plastique
CN101718020B (zh) * 2009-12-18 2011-06-22 东华大学 具有正交结构与平纹结构的三维机织物的制备方法
JP2012057276A (ja) * 2010-09-10 2012-03-22 Ichimura Sangyo Co Ltd 織編用糸とこれを用いた織編物並びに無機繊維補強樹脂成形品とその製造方法
US10161067B2 (en) * 2012-03-01 2018-12-25 Groz-Beckert Kg Fabric for use in composite materials and method for producing said fabric and a composite material body
JP5852542B2 (ja) * 2012-10-10 2016-02-03 綾羽株式会社 炭素繊維強化複合材用織物およびその製造方法
CN104129595B (zh) * 2014-08-06 2017-01-04 兖矿集团有限公司 一种直经整芯芳纶阻燃输送带

Also Published As

Publication number Publication date
WO2017042384A1 (fr) 2017-03-16
CN108026673A (zh) 2018-05-11

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