WO2016150550A1 - Procédé de fabrication de plastique renforcé par des fibres de carbone - Google Patents

Procédé de fabrication de plastique renforcé par des fibres de carbone Download PDF

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Publication number
WO2016150550A1
WO2016150550A1 PCT/EP2016/000395 EP2016000395W WO2016150550A1 WO 2016150550 A1 WO2016150550 A1 WO 2016150550A1 EP 2016000395 W EP2016000395 W EP 2016000395W WO 2016150550 A1 WO2016150550 A1 WO 2016150550A1
Authority
WO
WIPO (PCT)
Prior art keywords
mold
curing
fiber
light
molding
Prior art date
Application number
PCT/EP2016/000395
Other languages
German (de)
English (en)
Inventor
Daniel Sluka
Original Assignee
Eisenmann Se
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 Eisenmann Se filed Critical Eisenmann Se
Publication of WO2016150550A1 publication Critical patent/WO2016150550A1/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
    • B29C70/04—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
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/345—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using matched moulds
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0888—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using transparant moulds
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C2033/0005—Moulds or cores; Details thereof or accessories therefor with transparent parts, e.g. permitting visual inspection of the interior of the cavity
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0827—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using UV radiation

Definitions

  • the invention relates to a method for producing a fiber-plastic composite by means of a mold and a mold for producing a fiber-plastic erbunds.
  • fiber-plastic composites such as glass fiber reinforced plastic (GRP) or carbon fiber reinforced plastic (CFRP)
  • GRP glass fiber reinforced plastic
  • CFRP carbon fiber reinforced plastic
  • One such method is wet-pressing, in which liquid reaction resin compounds and reinforcing fibers are processed in two-part molds. Most of the molds are closed by means of a hydraulic press. During the closing process, the resin charge is distributed over the mold space and wets the reinforcing fiber. The molding cures in the mold and can then be removed from the mold.
  • RTM resin injection process
  • Hot pressing used This refers to the processing at temperatures above 120 ° C under pressure, preferably in steel tools.
  • An exemplary processing cycle in wet pressing is as follows: First, a release agent is applied to the surface of mold top and bottom. Reinforcing fiber blanks are laid according to the shape contour. The reaction resin batch is mixed with the reactants and poured into the mold. The press is closed and it is waited until the pressed parts are cured in the closed mold. Thereafter, the press is opened and the pressed part is removed from the mold.
  • a disadvantage of this method is the long process time, which is largely determined by the waiting time until curing in the mold.
  • the hot pressing represents a further development in this respect. By heating the tools and thus also the moldings, the cycle can be significantly accelerated. In this case, correspondingly thermally curable resins are used. The disadvantage here is that a high energy consumption is required for the thermal curing of the molded parts. At the same time, thermal curing also represents a factor determining the duration of the process cycle.
  • the method according to the invention comprises the following steps: introducing a UV-curable first material and together or separately in time a second material into the mold; Exposing the first material; and demolding the molding.
  • First and second materials may 'be introduced into two temporally separated steps.
  • first the first material and then the second material or, conversely, first the second material and then the first material can be introduced into the mold.
  • the first material and the second Material are combined before introduction with each other and introduced together in the mold.
  • the first material can form an outer surface of the second material and support or stabilize the uncured second material.
  • exposing the first material may initiate a cure of the UV-curable first material and fix the shape of the first material as molded through the mold.
  • the second material may comprise a molding material such as a resin and / or fibers.
  • the second material may therefore comprise only one molding material, only fibers or both components together.
  • the step of introducing the second material may thus comprise separately applying fibers and the second material covering the fibers.
  • fiber and fiber sheath can already be prepared and optionally already combined and applied in a single step.
  • the second material may be, for example, a thermosetting resin. But it can also be other thermally curable plastics.
  • the steps of introducing the first material and the second material may be simultaneous or sequential.
  • the first material may be introduced into the mold before the second material.
  • the first material may be introduced after the second material. This can be realized, for example, after the introduction of the second material by means of an injection of the first material between the second material and the inner mold surface.
  • the UV stabilization step significantly shortens the shape stabilization phase from thermal or reaction hardening.
  • the second material after being removed, is stabilized by the first material, but has not yet hardened. It can thus be combined, for example, with other moldings - for example joined - and cured at a later stage of the process together with the combined moldings.
  • a subsequent process step can be used, which provides a suitable for the curing of the molding temperature control. It must Thus, the molding are not heated separately for the curing process, but it can be shared in a subsequent process step anyway existing temperature cycle. This allows a particularly energy-saving production of a fiber-plastic composite molding.
  • the step of introducing the UV-curable first material comprises applying the first material as a layer.
  • the demolded molded part thus has a molding of the at least partially surrounding layer of the first material, which gives the entire molded part Sta ⁇ biltician.
  • the mold contour predetermined by the mold is uniformly transferred to the molded part.
  • a preferred embodiment of the method provides that the step of exposing comprises an irradiation of the light into the mold, in particular with UV light.
  • the first material can thus be exposed even when the first material is covered with the second material.
  • a through-blasting of the mold may be provided.
  • light sources or Lichtwellenlei ⁇ ter may be provided within the form.
  • the exposure of the first material preferably leads to hardening, in particular to complete curing of the first material.
  • the step of introducing the second material comprises compressing, in particular pressing, the second material.
  • the second material is nestled against the shape contour of the mold.
  • an optional introduction of the first material during the compression or pressing process can take place.
  • curing of the second material is carried out.
  • curing can For example, be carried out by means of a temperature increase of the molding.
  • a subsequent, occurring in any case during further processing of the molding Temperianss Republic can be used.
  • This can be, for example, a drying process of a coating applied to the molded part, such as a paint finish.
  • the inventive mold for producing a plastic composite molding, in particular a fiber-plastic composite molding is according to the invention transparent to light radiation that a material in the mold is curable by injecting light into the mold.
  • the accessibility of the material in the mold can be provided, for example, from the outside by means of irradiation of the mold or by means of light sources or optical waveguides located in the mold.
  • the material may comprise a first and a second material.
  • the first material may be curable by means of light and the second material may be thermally curable.
  • a manufacturing cycle by means of this mold is significantly simplified in comparison to a known thermal curing, since the thermal curing can be done here, for example, without form in a continuous furnace.
  • the light is preferably UV radiation.
  • curing for example by means of crosslinking of the first material, can take place within a short time.
  • the mold is advantageously at least partially made of glass, in particular of quartz glass.
  • This design provides the necessary stability for the manufacturing process.
  • the material glass can easily be irradiated by means of UV radiation.
  • the mold has an upper part and a lower part. Both the upper part and the lower part and also only either the upper or the lower part can be acted upon by the UV-curable material.
  • the two-part design allows, for example, a pressing of the upper part and lower part together and thus an exact shaping before the hardening process.
  • FIG. 1 shows a flow chart of a first method according to the invention for producing a fiber-plastic composite molding
  • the process according to the invention for producing a fiber-plastic composite molding shown in FIG. 1 provides, in a first step, for applying a mold with a UV varnish (S1).
  • the UV varnish may be a UV-curable resin.
  • the UV varnish is applied as a layer on the mold.
  • the fiber parts intended for the mold such as mats and a thermosetting resin, are laminated into the mold (S2).
  • the lamination process can be a hand lamination. An automated laminating process may also be provided.
  • the mold After lamination, the mold is closed (S3).
  • the closed mold is irradiated with UV light (S4).
  • UV irradiation the UV varnish that is in the mold hardens.
  • the shape is designed so that UV light can be irradiated onto the UV varnish.
  • UV curing the molded part in the mold is removed from the mold (S5).
  • the molded part Due to the curing of the UV varnish, the molded part now has a certain stability which enables handling and in particular further processing.
  • the molding is placed in a painting station (S6) and painted there (S7). After painting, the paint must be cured.
  • the painted molding in a dryer spent (S8).
  • S9 a tempering process is provided.
  • both the paint and the thermosetting resin material constituting the fiber composite resin are cured.
  • both the coating is cured and the final stability of the molded part is reached.
  • a fiber material such as a carbon mat
  • a resin S20
  • S20 may be, for example, commercially available pre-pregs.
  • a mold is treated with a UV varnish, preferably coated (S21).
  • the carbon mat with resin is in the
  • the mold is closed (S23) and irradiated with UV light (S24).
  • the first molded part thus produced is demoulded (S25).
  • a second molded part is produced.
  • Both moldings are joined together (S27).
  • the drying process (S28, S29) is also omitted become.
  • the joined parts are painted (S30) and painted (S31).
  • the joined and lacquered molded parts are placed in a dryer (S32) and both dried in the dryer and finally cured (S33). After removing the joined, painted and hardened parts from the dryer (S34), they can be transferred for further processing (S35).
  • FIGS. 3 a and 3 b show an embodiment according to the invention of a mold 10 for producing a fiber-plastic composite molded part 100.
  • the mold is open, shown closed in FIG. 3 b.
  • the mold 10 has an upper mold part 12 and a lower mold part 14.
  • the upper mold part 12 is formed as a male mold, while the lower mold part 14 is formed as a die. But there are also other shapes possible.
  • the molding section 16 is made of quartz glass in the present embodiment and embedded in the mold bottom 14. Other materials than quartz glass are possible, as long as they have the required dimensional stability and radiopacity. Alternatively, the entire lower mold part 14 or additionally also the upper mold part 16 can be made radiographable.
  • Both the upper mold part 12 and the lower mold part 14 have edges 18, 20 which define the mold interior in the closed state of the mold 10 (FIG. 3b).
  • a carbon fiber resin semifinished product 102 is inserted into the mold 10.
  • the semifinished product 102 has a carbon fiber mat 110, which is coated with a resin 112.
  • a UV lacquer layer 114 is provided between the semifinished product 102 and the lower mold part 14. This was applied before placing and laminating the semifinished product 102.
  • the mold top 12 and mold bottom 14 define the final shape of the mold 100.
  • the UV varnish 114 is exposed via the quartz glass mold section 16.
  • the exposure can take place via light sources present in the quartz glass or in the lower mold part 14 or via a feed by means of optical waveguides from the outside.
  • a pressure on the semifinished product 102 can be exercised.
  • the resin 112 may be a thermosetting resin.
  • the compaction of the resin 112 and the carbon fiber mat 110 is carried out as homogeneous during the pressing operation ⁇ that the resin 112 is not mixed or with the UV varnish layer 114 the layer thickness of the UV-paint layer is impaired 114th
  • curing of the UV varnish 114 takes place without shrinkage within a few seconds.
  • the upper mold part 12 may also be coated with a lacquer layer 114.
  • the shape of the contour shape may be such as madestal- tet that both paint layers come upon closing of the upper mold part 12 and mold part 14 and 114 in contact combine MITEI ⁇ Nander.
  • both UV lacquer layers 114 are cured together.
  • the resin 112 with the carbon fiber mat 110 is thus surrounded by hardened UV lacquer layers 114 and, as it were, enclosed by them.

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une pièce moulée (100) en composite plastique renforcé par des fibres au moyen d'un moule (10), consistant à introduire un premier matériau (114) durcissable par UV et simultanément ou consécutivement un deuxième matériau (112) dans le moule (10), à irradier le premier matériau (114) et à démouler la pièce moulée (100). L'invention concerne également un moule (10) pour la fabrication d'une pièce moulée (100) en composite plastique, notamment d'une pièce moulée en composite plastique renforcé par des fibres, le moule (10) étant transparent au rayonnement lumineux de telle manière qu'un matériau (114) situé dans le moule peut être durci par application de lumière au moule.
PCT/EP2016/000395 2015-03-20 2016-03-05 Procédé de fabrication de plastique renforcé par des fibres de carbone WO2016150550A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015003511.8 2015-03-20
DE102015003511.8A DE102015003511A1 (de) 2015-03-20 2015-03-20 CFK-Prozess

Publications (1)

Publication Number Publication Date
WO2016150550A1 true WO2016150550A1 (fr) 2016-09-29

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Application Number Title Priority Date Filing Date
PCT/EP2016/000395 WO2016150550A1 (fr) 2015-03-20 2016-03-05 Procédé de fabrication de plastique renforcé par des fibres de carbone

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DE (1) DE102015003511A1 (fr)
WO (1) WO2016150550A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT519830B1 (de) * 2017-04-12 2019-07-15 Engel Austria Gmbh Verfahren zur Herstellung eines konsolidierten mehrlagigen Halbzeugs
DE102018131574A1 (de) * 2018-12-10 2020-06-10 Dieffenbacher GmbH Maschinen- und Anlagenbau Verfahren und Vorrichtung zur Konsolidierung einer Faserverbundstruktur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0571162A1 (fr) * 1992-05-16 1993-11-24 British Aerospace Public Limited Company Fabrication d'articles à partir de matériau composite
US5332536A (en) * 1992-01-22 1994-07-26 Cook Composites And Polymers Co. Molding resins and UV-transparent molds made from the resins for making fiber reinforced articles
US5746967A (en) * 1995-06-26 1998-05-05 Fox Lite, Inc. Method of curing thermoset resin with visible light
US20090110901A1 (en) * 2007-10-31 2009-04-30 Gaw Kevin O Composite fasteners containing multiple reinforcing fiber types

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2362838A1 (de) * 1973-12-18 1975-06-19 Jung Werke Gmbh Verfahren und vorrichtung zur herstellung von kunststoffteilen
DE19705303C2 (de) * 1996-02-16 2002-11-21 Karlsruhe Forschzent Verfahren zur Herstellung von Klein- und Mikroteilen
SG65682A1 (en) * 1997-01-31 1999-06-22 Shonan Design Co Ltd Form for manufacturing resin mold and clamping jig for resin mold

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5332536A (en) * 1992-01-22 1994-07-26 Cook Composites And Polymers Co. Molding resins and UV-transparent molds made from the resins for making fiber reinforced articles
EP0571162A1 (fr) * 1992-05-16 1993-11-24 British Aerospace Public Limited Company Fabrication d'articles à partir de matériau composite
US5746967A (en) * 1995-06-26 1998-05-05 Fox Lite, Inc. Method of curing thermoset resin with visible light
US20090110901A1 (en) * 2007-10-31 2009-04-30 Gaw Kevin O Composite fasteners containing multiple reinforcing fiber types

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Publication number Publication date
DE102015003511A1 (de) 2016-09-22

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