EP1194476A1 - Matiere thermoplastique renforcee par de longues fibres et son procede de production - Google Patents
Matiere thermoplastique renforcee par de longues fibres et son procede de productionInfo
- Publication number
- EP1194476A1 EP1194476A1 EP00951222A EP00951222A EP1194476A1 EP 1194476 A1 EP1194476 A1 EP 1194476A1 EP 00951222 A EP00951222 A EP 00951222A EP 00951222 A EP00951222 A EP 00951222A EP 1194476 A1 EP1194476 A1 EP 1194476A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fibers
- thermoplastic
- fiber
- thermoplastic material
- polyamide
- 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- Withdrawn
Links
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
- B29C70/02—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements, e.g. non-specified reinforcements, fibrous reinforcing inserts and fillers, e.g. particulate fillers, incorporated in matrix material, forming one or more layers and with or without non-reinforced or non-filled layers
- B29C70/021—Combinations of fibrous reinforcement and non-fibrous material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
Definitions
- the present invention relates to a long-fiber-reinforced thermoplastic material and a method for producing long-fiber-reinforced thermoplastics, in which the fibers are impregnated with a first thermoplastic material.
- Long fibers are generally understood to be fibers with a length of at least 1 mm, preferably of the order of 5 mm or more.
- Such fiber materials which are also referred to as composite materials, are now used in a very wide variety of ways in the field of mechanical components, in which a low weight and z.
- B. a high mechanical strength, electrical insulation, or a low or high thermal conductivity to be combined.
- B. glass fiber or carbon fiber reinforced plastics which are for light, but mechanically highly stressed components such.
- B. aircraft wings, boat hulls, golf club shafts, technical injection molded parts and the like are used.
- thermoplastic materials are often also provided as semi-finished goods or semi-finished products, for example by B.
- a thermoplastic is mixed with appropriate fibers or by impregnating fibers with a thermoplastic, whereupon the material thus produced is then comminuted into pellets or granules, which is then used as a raw material for the production of components of larger dimensions.
- the pellets or granulate particles are melted, placed in a mold or spread on surfaces and connected to one another in this way.
- thermoplastic contributes to the favorable formability, elasticity and other desirable properties, such as corrosion resistance, temperature resistance and general chemical resistance
- thermoplastics which have so far been used for the impregnation of long fibers, are still unsatisfactory in most cases
- the present invention has for its object to provide a long-fiber reinforced thermoplastic material and a method for producing the same, which offers a considerably broader variation in the mechanical, other physical, chemical and electrical properties that can be achieved than with previously known ones thermoplastic, long fiber reinforced materials was the case
- the object on which the invention is based is achieved in that the matrix of the material consists of at least two different thermoplastics, the fibers being essentially only wetted by one of the two thermoplastic materials
- At least 80% of the fibers or the fiber surfaces are preferably wetted with the first of the two thermoplastic materials
- the second thermoplastic material can then, if necessary, with regard to the physical or chemical properties desired for the end product Properties can be selected
- the second thermoplastic material can be one which has a higher temperature resistance, a higher compressive strength or generally mechanical strength, a better electrical insulation ability or optionally also a conductivity or a better resistance to certain chemicals depending on the Proportion of the second thermoplastic material can then determine its favorable properties for the end product, whereas the fibers impregnated with the first thermoplastic material contribute a very good tensile strength and thus a high mechanical strength for the material.
- thermoplastic material which may have a very poor impregnation or wetting ability for the fibers, but can be connected relatively well and easily to the first thermoplastic material.
- the result is then a material which combines the favorable properties of the long fiber reinforcement with those of the second thermoplastic material, the first thermoplastic material essentially providing only the link between the fibers and the second thermoplastic material.
- the second thermoplastic material that can be used is one that has poor impregnation or wetting properties for the fibers present in the material. If this impregnation or wetting ability were just as good or even better than for the first thermoplastic material, the fibers could also be coated or coated directly with the second material and the combination of two thermoplastic materials would not be required.
- thermoplastic materials can also have new favorable properties, which neither of the two materials has in itself, so that the basic idea of the present invention should also include the use of two thermoplastic materials as a matrix for long fibers , even if the individual materials each have good wetting and impregnating properties for the fibers.
- fibers contained in the material in particular glass carbon, aramid or natural fibers are provided, with the latter z.
- thermoplastic material which is referred to here as the "first" thermoplastic material
- the material preferably being selected from the group consisting of polypropylene, Polyamide (polyamide 6, polyamide 66, polyamide 12, polyamide 46), polyethylene, acrylonitrile / butadiene / styrene copolymers, polyphenylene sulfide, polystyrene and polyether ether ketone.
- Advantageous properties of the material are also obtained when the at least two thermoplastic materials contained in the material are poorly or immiscible and form an inhomogeneous mixture.
- the inhomogeneities should be relatively small, ie the dimensions of inhomogeneous areas should be smaller than the typical fiber lengths.
- the fibers which are each wetted well by one of the materials, to bridge inhomogeneous areas in which the other thermoplastic material, which has poor wettability, predominates.
- the favorable properties provided by the tensile strength of the fibers are retained, while at the same time the favorable properties which the thermoplastic material contributes, which does not bond well with the fibers, are retained in the material.
- a variant of the invention is preferred, in which the proportion of a first , the fiber wetting material is between 10 and 40% of the matrix material.
- the first material is polypropylene and the second material is a high quality polyamide, such as. B. PA66, the polypropylene content is between 10 and 40% and the PA content is accordingly 60-90%.
- the material is given a compatibilizer which increases the connection between the different matrix materials and / or their miscibility. In this way, a more favorable connection of the two poorly miscible materials and thus a greater degree of homogeneity is achieved, so that relatively short fibers in the range of 1-5 mm in length can be used, which easily bridge the correspondingly small inhomogeneous areas.
- the object on which the invention is based is achieved in that the already impregnated fibers are impregnated again with a second thermoplastic material different from the first material or to be mixed or wrapped.
- thermoplastic materials which in themselves are not very suitable for a direct connection
- the length of the fibers to be impregnated is expediently preferably at least 3 or particularly preferably more than 6 mm.
- the fibers can be supplied in the form of a strand with fibers oriented essentially in the longitudinal direction, but also as a fiber mat in matted form or simply as a fiber mixture with fibers of any orientation.
- the fibers are first extruded or coated with the first thermoplastic material and, after the thermoplastic material has solidified, optionally also a shaping step, in order to make the entire material, for. B. extruded in a strand with a constant cross-section, it can then be impregnated as a strand with the second thermoplastic material.
- an embodiment of the production process in which after the solidification and the shaping which may have taken place, the material formed in this way (mostly in the form of a strand) is divided into smaller sections, the length of these sections being at least of the order of magnitude of the middle Fiber length is so as not to unnecessarily shorten the existing fibers.
- the fibers are particularly long and z. B. well over 6 mm, such as. B. have a length of 25 mm or are more or less continuous fibers, the sections into which the strand formed with the first thermoplastic material is divided can also be shorter than it corresponds to the average fiber length.
- These divided sections are then mixed with the second material, optionally with heating, and the mixed material is then subjected to a shaping process.
- Such a shaping process is generally carried out by extrusion, blow molding or injection molding.
- this mixture is increased only briefly to the melting point or slightly above the melting point of the higher-melting substance , although this can lead to the mixture not becoming completely homogeneous, it is sufficient if the inhomogeneous regions have small dimensions compared to the fibers, ie if e.g. B. alternately smaller areas are present in the material, which consist only of one or only of the other thermoplastic material, but these areas have typical dimensions that are significantly less than the fiber length.
- Figure 1 schematically shows a process for the production of long fiber reinforced thermoplastics with a matrix of different thermoplastics
- Figure 2 schematically shows a mixture of a long fiber reinforced thermoplastic
- FIG. 1 One can see in FIG. 1 on the left a fiber strand 1 which is passed through an extruder 2 with a feed device 3 for a first thermoplastic material, the extruder 2 and the corresponding feed nozzle 3 being shown only roughly schematically here, just like the fiber strand 1 only is shown schematically and passes through the extruders 2 and 4 from left to right.
- the fiber strand is impregnated and is now referred to as impregnated fiber strand 11, which is passed through a second extruder 4 with a second feed nozzle 5, so that the fiber strand impregnated with the first thermoplastic material 1 1 is coated with the second matrix or the second matrix is applied to the impregnated strand 1 1 and now exits the extruder 4 as a finished fiber strand 21.
- This procedure is particularly recommended when it can be assumed that the connection between the two thermoplastics is poor and forms a non-homogeneous mixture of the plastics, so that the best possible connection between the two thermoplastics when extruded or encased with the second matrix can be realized.
- FIG. 2 shows a long fiber-reinforced thermoplastic material with two matrices, which is produced in a slightly different way than the thermoplastic material 21 shown schematically in FIG. 1.
- the resulting long-fiber-reinforced material 1 1 ' which consists only of the fibers and a first thermoplastic material, is cut into pellets in the form of rods and these pellets or rods are made of the material 1 1' then mixed with a second thermoplastic material 6, as is shown schematically in FIG.
- This mixture can then be heated again and optionally also extruded in order to produce a close connection between the fiber-reinforced first thermoplastic material 11 'and the second matrix material 6.
- the material ultimately produced can be inhomogeneous and essentially retain the structure according to FIG. 2 (generally without air gaps), but the fibers in the pellets 11 ′ are the inhomogeneous ones Bridging areas so that when viewed macroscopically, ie at dimensions that are significantly greater than the length of the individual pellets 1 1 ', the material appears homogeneous overall and has properties that combine the properties of conventional fiber-reinforced materials with the properties of the second thermoplastic Material represents, although the second thermoplastic material by itself does not or only poorly connects to fibers and was therefore not conventionally producible as a long fiber reinforced material.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
L'invention concerne une matière thermoplastique renforcée par de longues fibres et un procédé de production de thermoplastes renforcés par de longues fibres. Selon ce procédé, les fibres sont imprégnées d'une première matière thermoplastique. La matrice de la matière étant composée d'au moins deux matières thermoplastiques différentes et les fibres mouillées sensiblement par une seule des deux matières thermoplastiques, la matière offre une variété nettement plus grande en termes de propriétés mécaniques ciblées et autres propriétés physiques, chimiques et électriques que celle des matières thermoplastiques renforcées par de longues fibres actuelles.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19930920A DE19930920A1 (de) | 1999-07-06 | 1999-07-06 | Langfaserverstärktes thermoplastisches Material und Verfahren zum Herstellen desselben |
DE19930920 | 1999-07-06 | ||
PCT/DE2000/001928 WO2001002471A1 (fr) | 1999-07-06 | 2000-06-09 | Matiere thermoplastique renforcee par de longues fibres et son procede de production |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1194476A1 true EP1194476A1 (fr) | 2002-04-10 |
Family
ID=7913680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00951222A Withdrawn EP1194476A1 (fr) | 1999-07-06 | 2000-06-09 | Matiere thermoplastique renforcee par de longues fibres et son procede de production |
Country Status (5)
Country | Link |
---|---|
US (1) | US6846857B1 (fr) |
EP (1) | EP1194476A1 (fr) |
AU (1) | AU6424800A (fr) |
DE (1) | DE19930920A1 (fr) |
WO (1) | WO2001002471A1 (fr) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10212943B4 (de) * | 2002-03-22 | 2010-05-27 | Eastman Kodak Co. | Zylinder für eine elektrofotografische Druckmaschine |
CA2553193A1 (fr) * | 2004-03-16 | 2005-09-29 | Daniel P. Dekock | Procede destine a preparer une composition renforcee a la fibre de verre et articles fabriques a partir de celle-ci |
US20080221254A1 (en) * | 2006-10-16 | 2008-09-11 | Mohamed Hassan El-Zayatie | Material for making long fiber filled thermoplastics with improved additive evenness and physical properties |
CA2801267A1 (fr) | 2010-06-11 | 2011-12-15 | Ticona Llc | Element structural forme a partir d'un profile lineaire plein |
MX2012014178A (es) | 2010-06-22 | 2013-02-21 | Ticona Llc | Perfiles huecos reforzados. |
BR112012032181A2 (pt) | 2010-06-22 | 2016-11-22 | Ticona Llc | método para a formação de perfis pultrudados reforçados. |
WO2011163365A2 (fr) | 2010-06-22 | 2011-12-29 | Ticona Llc | Préimprégné thermoplastique contenant des fibres longues et continues |
JP5735109B2 (ja) | 2010-08-13 | 2015-06-17 | グリーン, ツイード オブ デラウェア, インコーポレイテッド | 高体積繊維負荷を有する熱可塑性繊維複合材ならびにそれを作製するための方法および装置 |
CN103534763B (zh) | 2011-04-12 | 2017-11-14 | 南方电线有限责任公司 | 具有复合芯的输电电缆 |
US9190184B2 (en) | 2011-04-12 | 2015-11-17 | Ticona Llc | Composite core for electrical transmission cables |
CA2831358C (fr) | 2011-04-12 | 2019-04-02 | Ticona Llc | Tiges thermoplastiques renforcees de fibres continues et methode d'extrusion par etirage pour sa fabrication |
WO2012141689A1 (fr) | 2011-04-12 | 2012-10-18 | Ticona Llc | Section d'imprégnation de moule et procédé d'imprégnation de stratifils de fibres |
TW201303192A (zh) | 2011-04-12 | 2013-01-16 | Ticona Llc | 用於水下應用之臍管 |
US9346222B2 (en) | 2011-04-12 | 2016-05-24 | Ticona Llc | Die and method for impregnating fiber rovings |
CA2775442C (fr) | 2011-04-29 | 2019-01-08 | Ticona Llc | Section d'impregnation avec surface en amont et methode d'impregnation des rubans de fibres |
PL2701886T3 (pl) | 2011-04-29 | 2017-06-30 | Ticona Llc | Dysza z rozpraszającą strumień bramką przejściową oraz sposób impregnowania włókien niedoprzędów |
CA2775445C (fr) | 2011-04-29 | 2019-04-09 | Ticona Llc | Matrice et methode d'impregnation des rubans de fibres |
US10336016B2 (en) | 2011-07-22 | 2019-07-02 | Ticona Llc | Extruder and method for producing high fiber density resin structures |
WO2013086269A1 (fr) | 2011-12-09 | 2013-06-13 | Ticona Llc | Section d'imprégnation de matrice pour imprégner des mèches de fibres |
US9283708B2 (en) | 2011-12-09 | 2016-03-15 | Ticona Llc | Impregnation section for impregnating fiber rovings |
BR112014012309A2 (pt) | 2011-12-09 | 2017-06-13 | Ticona Llc | fita de polímero reforçado com fibra assimétrica |
WO2013086267A1 (fr) | 2011-12-09 | 2013-06-13 | Ticona Llc | Section d'imprégnation de matrice pour imprégner des mèches de fibres |
WO2013086259A1 (fr) | 2011-12-09 | 2013-06-13 | Ticona Llc | Filière et procédé d'imprégnation de stratifils de fibres |
US9410644B2 (en) | 2012-06-15 | 2016-08-09 | Ticona Llc | Subsea pipe section with reinforcement layer |
US11358347B2 (en) | 2019-02-21 | 2022-06-14 | Johns Manville | Manufacturing fiber-reinforced thermoplastic concentrates |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2516128A2 (fr) | 1980-12-15 | 1983-05-13 | Vasseur Georges | Plafonds chauffants par rayonnement sous forme modulaire et leur systeme modulaire de raccordement electrique |
GB8400292D0 (en) * | 1984-01-06 | 1984-02-08 | Wiggins Teape Group Ltd | Fibre reinforced moulded plastics articles |
JPS63289034A (ja) * | 1987-05-21 | 1988-11-25 | Toho Rayon Co Ltd | 熱可塑性樹脂組成物およびその製造方法 |
DE3843576A1 (de) * | 1988-12-23 | 1990-07-12 | Jv Kunststoffwerk | Verfahren und vorrichtung zur herstellung von kunststoffformteilen |
US5185117A (en) * | 1989-09-05 | 1993-02-09 | Composite Products, Inc. | Process for compounding thermoplastic resin and fibers |
US5165941A (en) * | 1989-09-05 | 1992-11-24 | Composite Products, Inc. | Extruder apparatus and process for compounding thermoplastic resin and fibres |
US4994312A (en) * | 1989-12-27 | 1991-02-19 | Eastman Kodak Company | Shaped articles from orientable polymers and polymer microbeads |
US5114992A (en) * | 1990-12-26 | 1992-05-19 | Shell Oil Company | Reinforced polymers |
IT1254197B (it) * | 1992-02-06 | 1995-09-14 | Donegani Guido Ist | Procedimento per la preparazione di corpi formati in polimeri termoplastici rinforzati con fibra lunga |
DE4330861A1 (de) * | 1993-09-11 | 1995-03-16 | Basf Ag | Flächiges Halbzeug aus GMT-Recyclat |
JP3216428B2 (ja) * | 1994-06-13 | 2001-10-09 | チッソ株式会社 | 長繊維強化ポリマーアロイ樹脂組成物 |
DE19523490C2 (de) * | 1995-06-28 | 1997-04-10 | Werner & Pfleiderer | Vorrichtung und Verfahren zur Imprägnierung von Fasersträngen mit Kunststoffmaterial |
US5789477A (en) * | 1996-08-30 | 1998-08-04 | Rutgers, The State University | Composite building materials from recyclable waste |
US6090319A (en) | 1997-01-14 | 2000-07-18 | Ticona Celstran, Inc. | Coated, long fiber reinforcing composite structure and process of preparation thereof |
US6221951B1 (en) * | 1998-05-21 | 2001-04-24 | General Electric Company | Ketone polymer/fiber compositions |
EP1105277B1 (fr) * | 1998-06-19 | 2005-12-14 | Ticona Celstran, Inc. | Structure composite enduite de renfort a longues fibres et son procede de fabrication |
-
1999
- 1999-07-06 DE DE19930920A patent/DE19930920A1/de not_active Ceased
-
2000
- 2000-06-09 AU AU64248/00A patent/AU6424800A/en not_active Abandoned
- 2000-06-09 WO PCT/DE2000/001928 patent/WO2001002471A1/fr active Application Filing
- 2000-06-09 EP EP00951222A patent/EP1194476A1/fr not_active Withdrawn
- 2000-06-09 US US10/019,601 patent/US6846857B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0102471A1 * |
Also Published As
Publication number | Publication date |
---|---|
US6846857B1 (en) | 2005-01-25 |
WO2001002471A1 (fr) | 2001-01-11 |
AU6424800A (en) | 2001-01-22 |
DE19930920A1 (de) | 2001-01-11 |
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