FR2923179A1 - PROCESS FOR THE MANUFACTURE BY MOLDING A THERMOPLASTIC COMPOSITE PIECE - Google Patents

PROCESS FOR THE MANUFACTURE BY MOLDING A THERMOPLASTIC COMPOSITE PIECE Download PDF

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Publication number
FR2923179A1
FR2923179A1 FR0851915A FR0851915A FR2923179A1 FR 2923179 A1 FR2923179 A1 FR 2923179A1 FR 0851915 A FR0851915 A FR 0851915A FR 0851915 A FR0851915 A FR 0851915A FR 2923179 A1 FR2923179 A1 FR 2923179A1
Authority
FR
France
Prior art keywords
layer
reinforcing fibers
thermoplastic
molding
mold
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.)
Pending
Application number
FR0851915A
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French (fr)
Inventor
Vincent Duqueine
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.)
Tecalemit Aerospace Composites SAS
Original Assignee
Carbone Forge SARL
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 Carbone Forge SARL filed Critical Carbone Forge SARL
Priority to FR0851915A priority Critical patent/FR2923179A1/en
Publication of FR2923179A1 publication Critical patent/FR2923179A1/en
Pending legal-status Critical Current

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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
    • B29C70/04—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
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
    • B29C70/465—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating by melting a solid material, e.g. sheets, powders of fibres
    • 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
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
    • B29K2077/10—Aromatic polyamides [polyaramides] or derivatives thereof
    • 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
    • B29K2081/00—Use of polymers having sulfur, with or without nitrogen, oxygen or carbon only, in the main chain, as moulding material
    • B29K2081/04—Polysulfides, e.g. PPS, i.e. polyphenylene sulfide or derivatives thereof
    • 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
    • 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
    • B29K2707/00—Use of elements other than metals for preformed parts, e.g. for inserts
    • B29K2707/04—Carbon
    • 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
    • B29K2709/00—Use of inorganic materials not provided for in groups B29K2703/00 - B29K2707/00, for preformed parts, e.g. for inserts
    • B29K2709/08—Glass

Abstract

Procédé de fabrication par moulage d'une pièce composite thermoplastique issue d'une combinaison d'une ou de plusieurs matrices thermoplastiques compatibles avec des fibres de renfort identiques ou de nature différente.Il consiste à:- dans une première opération, déposer dans un moule (10) une couche (2) de fibres de renfort,- dans une seconde opération, déposer sur ladite couche (2) de fibres de renfort, une couche (3) d'une matrice thermoplastique- répéter éventuellement, une ou plusieurs fois, successivement les première et seconde opérations,- refermer le moule (1) et appliquer des conditions particulières de pression et de température durant un temps donné,- refroidir, et démouler la pièce (4) obtenue.Process for manufacturing by molding a thermoplastic composite part resulting from a combination of one or more thermoplastic matrices compatible with identical or different types of reinforcing fibers. It consists in: in a first operation, depositing in a mold (10) a layer (2) of reinforcing fibers, - in a second operation, depositing on said layer (2) of reinforcing fibers, a layer (3) of a thermoplastic matrix- possibly repeat, one or more times, successively the first and second operations, - close the mold (1) and apply special conditions of pressure and temperature for a given time, - cool, and demold the piece (4) obtained.

Description

La présente invention a pour objet un procédé de fabrication par moulage d'une pièce composite thermoplastique, issue d'une combinaison de fibres de renfort identiques ou de nature différentes avec une ou plusieurs matrices thermoplastiques compatibles. On connaît déjà des procédés de moulage d'une pièce composite thermoplastique ou thermodurcissable, destinés à mettre en forme un matériau composite constitué de fibres noyées dans une matrice thermoplastique. Les fibres peuvent être de différentes natures, par exemple du verre, du carbone ou de l'aramide, tandis que la matrice est par exemple du type polyamide ou autre. Les produits connus à matrice thermoplastique sont généralement présentés sous forme semi-rigide, nappe, tissu, ou autres, ce qui limite fortement la réalisation de formes complexes de pièces composites. Il existe également des produits pré imprégnés à matrice thermoplastique en configuration souple très adaptée à des géométries de grande complexité. Par contre, la combinaison et l'imprégnation des fibres de renfort restent très limitées. Ainsi, certaines matrices thermoplastiques ne peuvent pas être associées avec certains types de fibres de renfort, par exemple la combinaison d'une matrice thermoplastique Polysulfure de phénylène (PPS) avec des fibres de verre, qui n'existe qu'en configuration semi-rigide. La présente invention a pour but de proposer un procédé de fabrication par moulage d'une pièce composite thermoplastique permettant de remédier aux inconvénients précités. Le procédé de fabrication par moulage d'une pièce composite thermoplastique issue d'une combinaison d'une ou de plusieurs matrices thermoplastiques compatibles avec des fibres de renfort identiques ou de nature différente selon l'invention, se caractérise essentiellement en ce qu'il consiste à: - dans une première opération, déposer dans un moule une 35 couche de fibres de renfort, - dans une seconde opération, déposer sur ladite couche de fibres de renfort, une couche d'une matrice thermoplastique, - répéter éventuellement, une ou plusieurs fois, successivement les première et seconde opérations, - refermer le moule et appliquer des conditions particulières de pression et de température durant un temps donné, - refroidir et démouler la pièce obtenue. La ou les couches de fibres de renfort sont souples, de même que la ou les couches d'une matrice thermoplastique, en sorte qu'il est possible de leur faire prendre des formes complexes. Puis, lors de la mise en pression, la matière thermoplastique flue dans la couche de fibres de renfort et se 15 consolide. Les avantages et les caractéristiques du procédé selon l'invention, ressortiront plus clairement de la description qui suit et qui se rapporte au dessin annexé, lequel en représente un mode de réalisation non limitatif. 20 Dans le dessin annexé : - les figures la, lb et le représentent chacune une vue schématique en coupe d'un moule, et illustrant des étape du procédé selon l'invention. - la figure 2 représente une vue schématique en coupe du 25 même moule, illustrant une variante du même procédé. Ce procédé pourra être également réalisé avec des couches multiples. En référence à ces figures, on peut voir un moule 1 comprenant une partie femelle 10 et une partie mâle 11. 30 Selon le procédé objet de la présente invention, figure la, on dépose dans la partie femelle 10 une couche de fibres de renfort 2, puis une couche d'une matrice thermoplastique 3. Ces couches 2 et 3 sont souples, ce qui permet d'épouser les formes les plus complexes du moule 1. The present invention relates to a method of manufacturing by molding a thermoplastic composite part, resulting from a combination of reinforcing fibers identical or different in nature with one or more compatible thermoplastic matrices. Processes for molding a thermoplastic or thermosetting composite part for forming a composite material consisting of fibers embedded in a thermoplastic matrix are already known. The fibers may be of different types, for example glass, carbon or aramid, while the matrix is for example of the polyamide type or other. Known thermoplastic matrix products are generally presented in semi-rigid form, web, fabric, or others, which greatly limits the production of complex shapes of composite parts. There are also pre-impregnated thermoplastic matrix products in flexible configuration very suitable for geometries of great complexity. On the other hand, the combination and the impregnation of the reinforcing fibers remain very limited. Thus, certain thermoplastic matrices can not be associated with certain types of reinforcing fibers, for example the combination of a thermoplastic Polysulfide (PPS) matrix with glass fibers, which exists only in semi-rigid configuration . The object of the present invention is to provide a process for the manufacture by molding of a thermoplastic composite part making it possible to remedy the aforementioned drawbacks. The method of manufacturing by molding a thermoplastic composite part resulting from a combination of one or more thermoplastic matrices compatible with identical or different type of reinforcing fibers according to the invention is essentially characterized in that it consists of to: - in a first operation, depositing a layer of reinforcing fibers in a mold, - in a second operation, depositing on said layer of reinforcing fibers, a layer of a thermoplastic matrix, - possibly repeating, one or more Once, successively the first and second operations, - close the mold and apply special conditions of pressure and temperature for a given time, - cool and demold the piece obtained. The layer or layers of reinforcing fibers are flexible, as well as the layer or layers of a thermoplastic matrix, so that it is possible to make them take complex shapes. Then, during pressurization, the thermoplastic material flows into the reinforcing fiber layer and consolidates. The advantages and characteristics of the method according to the invention will become more clearly apparent from the description which follows and which refers to the appended drawing, which represents a non-limiting embodiment thereof. In the accompanying drawing: FIGS. 1a, 1b and 1c are each a schematic sectional view of a mold, and illustrating steps of the method according to the invention. - Figure 2 shows a schematic sectional view of the same mold, illustrating a variant of the same method. This process may also be performed with multiple layers. With reference to these figures, it is possible to see a mold 1 comprising a female part 10 and a male part 11. According to the method that is the subject of the present invention, FIG. 1a, a layer of reinforcing fibers 2 is deposited in the female part 10. , then a layer of a thermoplastic matrix 3. These layers 2 and 3 are flexible, which allows to marry the most complex forms of the mold 1.

L'étape suivante, figure lb, consiste à presser l'ensemble avec la partie mâle 11, à exercer une certaine pression P, et à chauffer l'ensemble, cela pendant un certain temps. Enfin, figure lc, après refroidissement la pièce obtenue 4 5 peut être démoulée. En référence maintenant à la figure 2, on peut voir que, selon une variante, on dépose dans la partie femelle 10, après y avoir déposé une couche de fibres de renfort 2, puis une couche d'une matrice thermoplastique 3, une nouvelle couche 20 de 10 fibres de renfort identiques ou différentes de celles de la couche 2, puis une nouvelle couche 30 d'une matrice thermoplastique identique ou compatible avec celle de la couche 3. Le procédé selon l'invention permet de fabriquer des 15 pièces composites complexes, par exemple réalisé en PPS avec des fibres de verre. Ce procédé peut cependant être appliqué à tous types de plastique et tous types de fibre de renfort. Ce procédé présente également des avantages du point de 20 vue économique, puisqu'il ne nécessite pas d'opérations d'entremêlement de fils des différents composants ou de pré imprégnation des fibres de renfort. The next step, FIG. 1b, consists in pressing the assembly with the male part 11, exerting a certain pressure P, and heating the assembly for a certain time. Finally, FIG. 1c, after cooling, the part obtained can be demolded. Referring now to Figure 2, it can be seen that, according to a variant, is deposited in the female part 10, after having deposited a layer of reinforcing fibers 2, then a layer of a thermoplastic matrix 3, a new layer 20 of 10 reinforcing fibers identical or different from those of the layer 2, then a new layer 30 of a thermoplastic matrix identical or compatible with that of the layer 3. The method according to the invention makes it possible to manufacture complex composite parts , for example made of PPS with glass fibers. This method can however be applied to all types of plastic and all types of reinforcing fiber. This method also has advantages from an economic point of view since it does not require operations of intermingling of the yarns of the various components or pre-impregnation of the reinforcing fibers.

Claims (1)

REVENDICATIONS 1. Procédé de fabrication par moulage d'une pièce composite thermoplastique issue d'une combinaison d'une ou de plusieurs matrices thermoplastiques compatibles avec des fibres de renfort identiques ou de nature différente, caractérisé en ce qu'il consiste à: - dans une première opération, déposer dans un moule (10) une couche (2) de fibres de renfort, - dans une seconde opération, déposer sur ladite couche (2) de fibres de renfort, une couche (3) d'une matrice 10 thermoplastique, - répéter éventuellement, une ou plusieurs fois, successivement les première et seconde opérations, - refermer le moule (1) et appliquer des conditions particulières de pression et de température durant un temps 15 donné, -refroidir, et démouler la pièce (4) obtenue. 1. A method of manufacturing by molding a thermoplastic composite part obtained from a combination of one or more thermoplastic matrices compatible with identical or different types of reinforcing fibers, characterized in that it consists of: in a first operation, depositing in a mold (10) a layer (2) of reinforcing fibers, - in a second operation, depositing on said layer (2) of reinforcing fibers, a layer (3) of a thermoplastic matrix, - Repeating possibly, one or more times, successively the first and second operations, - Close the mold (1) and apply special conditions of pressure and temperature for a given time 15, -Chill, and demold the piece (4) obtained .
FR0851915A 2007-11-02 2008-03-26 PROCESS FOR THE MANUFACTURE BY MOLDING A THERMOPLASTIC COMPOSITE PIECE Pending FR2923179A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0851915A FR2923179A1 (en) 2007-11-02 2008-03-26 PROCESS FOR THE MANUFACTURE BY MOLDING A THERMOPLASTIC COMPOSITE PIECE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0758760A FR2923178A1 (en) 2007-11-02 2007-11-02 Composite thermoplastic part manufacturing method, involves applying specific pressure and temperature on mold during given time, cooling obtained composite thermoplastic part, and removing composite thermoplastic part from mold
FR0851915A FR2923179A1 (en) 2007-11-02 2008-03-26 PROCESS FOR THE MANUFACTURE BY MOLDING A THERMOPLASTIC COMPOSITE PIECE

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FR2923179A1 true FR2923179A1 (en) 2009-05-08

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FR0758760A Pending FR2923178A1 (en) 2007-11-02 2007-11-02 Composite thermoplastic part manufacturing method, involves applying specific pressure and temperature on mold during given time, cooling obtained composite thermoplastic part, and removing composite thermoplastic part from mold
FR0851915A Pending FR2923179A1 (en) 2007-11-02 2008-03-26 PROCESS FOR THE MANUFACTURE BY MOLDING A THERMOPLASTIC COMPOSITE PIECE

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FR3072897B1 (en) * 2017-10-26 2020-11-06 Faurecia Automotive Composites METHOD OF MANUFACTURING A PART IN COMPOSITE MATERIAL

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0516235A1 (en) * 1991-05-29 1992-12-02 Dsm N.V. Process for processing a material comprising thermoplastic polymer and fibrous reinforcing material
DE19712865A1 (en) * 1997-03-27 1997-09-25 Inst Verbundwerkstoffe Gmbh Thermoplastic moulding production technique
EP0835741A2 (en) * 1996-09-01 1998-04-15 New Millennium Composites Limited Manufacture of fibre reinforced composites
EP0928804A1 (en) * 1998-01-08 1999-07-14 Ten Cate Advanced Composites B.V. Method for preparing a fabric substantially consisting of carbon fibers
CA2407880A1 (en) * 2002-10-26 2004-04-26 Mohini M. Sain Process to manufacture high impact natural composites
WO2004048072A1 (en) * 2002-11-22 2004-06-10 Uws Ventures Ltd Rigid composite structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0516235A1 (en) * 1991-05-29 1992-12-02 Dsm N.V. Process for processing a material comprising thermoplastic polymer and fibrous reinforcing material
EP0835741A2 (en) * 1996-09-01 1998-04-15 New Millennium Composites Limited Manufacture of fibre reinforced composites
DE19712865A1 (en) * 1997-03-27 1997-09-25 Inst Verbundwerkstoffe Gmbh Thermoplastic moulding production technique
EP0928804A1 (en) * 1998-01-08 1999-07-14 Ten Cate Advanced Composites B.V. Method for preparing a fabric substantially consisting of carbon fibers
CA2407880A1 (en) * 2002-10-26 2004-04-26 Mohini M. Sain Process to manufacture high impact natural composites
WO2004048072A1 (en) * 2002-11-22 2004-06-10 Uws Ventures Ltd Rigid composite structure

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