EP2300219A1 - Procédé de production d articles composites techniques comprenant un époxy et des nanotubes de carbone - Google Patents

Procédé de production d articles composites techniques comprenant un époxy et des nanotubes de carbone

Info

Publication number
EP2300219A1
EP2300219A1 EP09761853A EP09761853A EP2300219A1 EP 2300219 A1 EP2300219 A1 EP 2300219A1 EP 09761853 A EP09761853 A EP 09761853A EP 09761853 A EP09761853 A EP 09761853A EP 2300219 A1 EP2300219 A1 EP 2300219A1
Authority
EP
European Patent Office
Prior art keywords
mould
epoxy
film
blade
carbon nano
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Withdrawn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
EP09761853A
Other languages
German (de)
English (en)
Inventor
Joachim KARTHÄUSER
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.)
Eagle Tuulivoima Oy
Original Assignee
Eagle Tuulivoima Oy
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 Eagle Tuulivoima Oy filed Critical Eagle Tuulivoima Oy
Publication of EP2300219A1 publication Critical patent/EP2300219A1/fr
Withdrawn legal-status Critical Current

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
    • B29C70/58—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • 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
    • C08J5/005—Reinforced macromolecular compounds with nanosized materials, e.g. nanoparticles, nanofibres, nanotubes, nanowires, nanorods or nanolayered materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • F01D5/282—Selecting composite materials, e.g. blades with reinforcing filaments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • F03D1/0675—Rotors characterised by their construction elements of the blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G6/00—Devices for producing mechanical power from solar energy
    • F03G6/02—Devices for producing mechanical power from solar energy using a single state working fluid
    • F03G6/04—Devices for producing mechanical power from solar energy using a single state working fluid gaseous
    • F03G6/045—Devices for producing mechanical power from solar energy using a single state working fluid gaseous by producing an updraft of heated gas or a downdraft of cooled gas, e.g. air driving an engine
    • 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
    • B29K2063/00—Use of EP, i.e. epoxy resins or derivatives thereof, as moulding material
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • B29K2105/165—Hollow fillers, e.g. microballoons or expanded particles
    • B29K2105/167—Nanotubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
    • 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
    • C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/60—Assembly methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/60—Assembly methods
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • This invention relates to a method according to the preamble of claim 1.
  • the technical field is characterized by the keywords: composites, thermosets, reinforcement, carbon fibers (CF) , carbon nano tubes (CNT), production of composites, windmill blades, propellers, sporting goods such as skis, automotive and industrial parts, production methods.
  • the invention relates also to a windmill blade or similar composite article.
  • Epoxy mixtures with CNT are known, in particular under the trade name Hybtonite® by the company Amroy (FI) . Descriptions can be found e.g. in the prior art WO 2006/040398 Al. Hybtonite® is already used in the manufacture of large wind mill blades and other composite articles. The production process for wind mill blades typically involves one mould into which solids are placed such as long glass fibers. Thereafter, a liquid epoxy formulation is pumped into the mould, and typically vacuum has to be applied to ensure that the liquid fills all empty spaces prior to heating up the complete mould.
  • EP 1859920 Al discloses a method to vent residual gas through at least one venting duct which may contain a semi-permeable membrane.
  • the usually employed technique to produce long composite articles such as windmill blades is (vacuum-assisted) resin transfer moulding (RTM) .
  • RTM resin transfer moulding
  • the wind mill blade is painted or gel-coated in order to provide a surface finish and to protect the structure from weather influences and sunlight.
  • Epoxy or polyepoxide is a thermosetting polymer formed from reaction of an epoxide "resin” with polyamine “hardener”.
  • Epoxy has a wide range of applications, including fiber-reinforced plastic materials and general purpose adhesives.
  • Epoxy is a copolymer; that is, it is formed from two different chemicals. These are referred to as the "resin” and the “hardener”.
  • the resin consists of monomers or short chain polymers with an epoxide group at either end. Most common epoxy resins are produced from a reaction between epichlorohydrin and bisphenol-A, though the latter may be replaced by similar chemicals.
  • the hardener consists of polyamine monomers, for example Triethylenetetramine (TETA) . When these compounds are mixed together, the amine groups react with the epoxide groups to form a covalent bond. Each NH group can react with an epoxide group, so that the resulting polymer is heavily crosslinked, and is thus rigid
  • curing The process of polymerization is called "curing", and can be controlled through temperature and choice of resin and hardener compounds; the process can take minutes to hours. Some formulations benefit from heating during the cure period, whereas others simply require time, and ambient temperatures.
  • the costs for raw materials can be high.
  • the costs for moulding are usually high because either pressure or vacuum equipment or both is needed in order first pump liquid raw material into the mould and to secondly ensure that no gas is trapped within the finished article.
  • the surface quality and appearance of the finished article is often of low quality, and this requires after-work such as gel-coating or painting.
  • the stability and mechanical properties, or the weight/strength ratio is insufficient.
  • blades of extremely low weight such as weighing 2,5 kg or less for a blade length of 2 m are required. These are not available today.
  • composite articles show a favorable life-cycle analysis (LCA) .
  • LCA life-cycle analysis
  • the object of this invention is to achieve an improved method for producing engineered composite articles comprising epoxy resins and carbon nano tubes. This object is achieved with the features described in accompanying claim 1.
  • the traditional need for evacuating the mould or the need for transferring liquid resin using pressure pumps is obviated.
  • the film is under any circumstances fully polymerized ("fully cured") .
  • a good bonding is achieved because a) The film is highly compatible with the epoxy system, and/or b) Excess resin fills the film at least partly - whereas the resin, however, will not migrate through the whole film.
  • the good compability means that the epoxy resin wets the surface of the film. This will be true for thermoplastic elastomer, polyamide, polyacryle, polyvinylchloride (PVC) , polystyrene, and many other thermoplastics or their mixtures. In other words compatibility is defined here in terms of surface tension. On the contrary silicone and water, or polyester to take a plastic, are NOT compatible.
  • thermoplastic may need a pre-treatment for reaching said compability.
  • PVC-layer isn't directly compatible with epoxy.
  • PVC may be provide first a layer like paper, which is compatible both PVC and epoxy.
  • the surface quality is given by the surface quality of the film, and by the contact between film and the mould halves. It is not expected that a gel coat or any further finishing step apart from trimming edges (where excess resin has left the mould) is needed.
  • mould release agents are also obviated, alternatively non-fluorinated release agents can be used, thereby reducing costs and environmental performance.
  • paraffinic waxes are suitable. Liquid epoxy resin will not permeate through such films and will therefore not adhere later to the mould surface.
  • the films can be equipped directly with company logos or colour patterns.
  • the film has also the function of enclosing the resin containing functionalized CNT. Without a film, there would be a risk of contamination of the mould with CNT, a rougher surface might result because resin/CNT would stick to the mould and create an irregular surface.
  • windmill blades and similar composite articles are produced in the following manner: a mould is provided, equipped with a film which later shall at least partly form part of the windmill blade. The film is wetted with glue.
  • the mould is further loaded with reinforcing structures such as glass fiber mats, light- weight core material and elements which allow the windmill blades to be connected to the rotor.
  • the mould is closed whereby the core material may be oversized in comparison to the mould volume.
  • the subsequent partial crushing of the core structure ensures that all remaining liquid epoxy fills all voids in the mould.
  • the complete mould is heated until the material is cured. No mould evacuation is necessary. Also, the need for using pressure pumps to transfer liquid resin into the mould is obviated.
  • Life-cycle analysis as the windmill blade contains less solid materials and more combustible materials, the product can be burned after use leaving less ash and solid products.
  • Figure 1 presents open mould halves for receiving film and other required materials
  • Figure 2 presents mould halves in a closing stage
  • Figure 3 presents another mould in the heating phase
  • a mould (10) comprising two mould halves (1) is provided which are connected by an axis (2), Fig. 1. Film and solid components and resin are laid into one mould half whereupon the mould (10) is closed for curing. Film (3) may cover both mould halves (1) .
  • the film covers at least 50%, but preferably at least 90% of the surface of the open mould (10) .
  • Thermoplastic, like polyamide of film has preferably high melting point and pre-treated to reach said compability. If multi-layer film is used, the outer layer is impermeable, while others allow unpolymerized epoxy migrate through to the outer layer.
  • film (3) is used to fill at least part of the inner mould surface, ideally on both sides.
  • Solid light-weight components (4) are used to fill the mould, as well as liquid resin (5) to fill voids and to provide binding between the solids and the film.
  • the mould is closed as indicated by arrow (6) .
  • the film (3) is impermeable at least to the extent that unpolymerized epoxy is prevented from migrating through the film to the mould.
  • the film has preferably with excellent compatibility with and adhesion to epoxy resins.
  • epoxy formulations containing functionalized Carbon Nano Tubes are used in amounts of at least 1% of the final product weight, such as at least 2% or such as at least 5% or more.
  • Aerogel, honeycomb structures, or other materials of a specific weight not exceeding 100 kg/m 3 is used as light weight core material, preferably the specific weight not exceeding 60 kg/m 3 .
  • the closed mould is heated to afford polymerisation or curing of the resin system used, Fig. 3.
  • connectors (6) have been inserted. They extend well into the wind mill blade as indicated by extensions (7) .
  • the outer part (6) may be detachable from the inner part (7) e.g. by a screw connection.
  • film is forming an integral part of a rigid composite structure, and that a part of the film used in the composite is covering a part of the outer surface of the composite.
  • the exceptional strength of film and its tolerance to defects such as mechanical damage helps to produce durable light-weight composites on the basis of sustainable raw materials.
  • a mould is provided, ideally in two halves made of metal such as aluminium.
  • the mould is equipped with a film or a foil which later at least partly forms an integral part of the composite.
  • the film material may be e.g. a thermoplastic polyurethane or polyamide and may be e.g. 0,75 mm in thickness (generally each layer 0,2 - 1,0 mm) .
  • the film may consist of more than one layer whereby the top layer can be removed after the moulding process and serves otherwise as protective film.
  • Glue containing epoxy and functionalized CNT commercially available as Hybtonite®, is spread on the foil or the film.
  • epoxy formulations contain preferably carbon nano tubes (CNT) with covalent bondings.
  • the film may be partly porous or microporous such that liquid glue impregnates the film, such that a better adhesion is achieved between the film and the glue.
  • Said porous or microporous film (3) which is used to cover the inner surfaces of the mould halves (1) has a thickness of at least 30 micrometer, but preferably at least 200 micrometer and most preferably 750 micrometer. It is made of thermoplastic urethane, thermoplastic elastomer or thermoplastic such as polyamide (particularly with melting point about 100 0 C) .
  • thermoplastic urethane thermoplastic elastomer or thermoplastic such as polyamide (particularly with melting point about 100 0 C) .
  • a laminate such as consisting of glass or carbon fiber, in the form of woven or non-woven laminate or pre-impregnated (pre-cured) structures is placed in the mould.
  • a light weight core is placed in the mould.
  • a bar which shall connect the core or the blade to the rotor of the wind power installation is placed in the mould in such a way that a good mechanical connection is achieved.
  • the core may be cut out appropriately leaving space for the bar which in itself preferably is a cured glass fiber composite material.
  • the said laminate structures or mats preferably cover the bar completely such that additional stability and fastening between the blade and the rotor is achieved.
  • the core material is oversize compared with the mould volume such that closure of the mould leads to partial crushing of the core material. This is intentional as liquid material is pressed into remaining open spaces of the mould, and also a good cross- linking between the core and the thermosetting epoxy is achieved. Furthermore, any trapped air, or most of the trapped air, is pressed into the light weight core.
  • the moulds may be held together by simple clamps.
  • the closed moulds are heated e.g. for 30 min at 75-100 0 C whereby the lower temperature often results in a better surface quality.
  • the blades may provided with stickers such as advertising emblems. Providing gel-coat or paint is only optionally and usually avoided due to the perfect surface of the film.
  • the production process is highly economical and suitable for windmill blades of any length.
  • the connecting bar i.e. the bar which connects the blade to the rotor of the wind power generator, may consist of pre-cured glassfiber and epoxy or similar hard material, and the connection to the rotor may be preferably by at least two metal rods having diameters of at least 10 mm for blades of 2 m length (and accordingly stronger for longer blades) .
  • the solid bar is connected to the light weight core using glue such as containing epoxy and CNT.
  • the blade can turn automatically away from the wind or expose only a minimum part of its surface to the wind. This can be achieved by fastening the rods into an arrangement which can rotate in the axis or parallel to the axis given by the long blade axis. Elastic components such as rubber parts or springs ensure that the blade is either moving away from the wind, or is returning to its default position of maximum wind power utilization.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Composite Materials (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Nanotechnology (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Wind Motors (AREA)

Abstract

L’invention concerne un procédé de production d’articles composites contenant un époxy et des nanotubes de carbone fonctionnalisé (CNT). Le procédé comprend les étapes consistant à : fournir un moule refermable (10) ayant une position ouverte et une position fermée, les parties internes du moule ouvert (10) étant équipées d’un film (3) qui est compatible avec ledit époxy et est imperméable au moins dans la mesure où la résine ne peut migrer à travers le film, en allant jusqu’au moule ; à remplir le moule ouvert (10) de colle contenant l’époxy et lesdits nanotubes de carbone fonctionnalisé, des matériaux solides et des éléments permettant la connexion mécanique à d’autres éléments de la machine ; à fermer et à chauffer le moule (10) jusqu’à ce que l’article fini soit suffisamment stable.
EP09761853A 2008-06-10 2009-06-10 Procédé de production d articles composites techniques comprenant un époxy et des nanotubes de carbone Withdrawn EP2300219A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20085570A FI20085570A0 (fi) 2008-06-10 2008-06-10 Menetelmä teknisten komposiittituotteiden valmistamiseksi käsittäen epoksihartsit ja hiilinanoputket
PCT/FI2009/050492 WO2009150298A1 (fr) 2008-06-10 2009-06-10 Procédé de production d’articles composites techniques comprenant un époxy et des nanotubes de carbone

Publications (1)

Publication Number Publication Date
EP2300219A1 true EP2300219A1 (fr) 2011-03-30

Family

ID=39589334

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09761853A Withdrawn EP2300219A1 (fr) 2008-06-10 2009-06-10 Procédé de production d articles composites techniques comprenant un époxy et des nanotubes de carbone

Country Status (3)

Country Link
EP (1) EP2300219A1 (fr)
FI (1) FI20085570A0 (fr)
WO (1) WO2009150298A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2493166A (en) * 2011-07-26 2013-01-30 Khalil Abu Al-Rubb Sail-type turbine blade with buoyant structure, adjustable tip, flexible reinforcement, tip cap and uncovered non-working parts
FR3066141B1 (fr) * 2017-05-12 2020-08-21 Safran Procede de fabrication d'une piece en composite avec revetement resistant a l'erosion integre lors de la fabrication
US12053908B2 (en) 2021-02-01 2024-08-06 Regen Fiber, Llc Method and system for recycling wind turbine blades

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US3873654A (en) * 1973-03-05 1975-03-25 Robert G Smith Process of forming a rigid foam airfoil section
US4292101A (en) * 1979-03-05 1981-09-29 Reichert James B Method of fabricating composite members
DE3014347C2 (de) * 1980-04-15 1983-05-26 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Verfahren zur Herstellung von schaumkerngestützen, faserverstärkten Kunststoff-Formkörpern wie Flügel, Rotorblätter etc. großer Längen-und Breitenausdehnung
GB2105633B (en) * 1981-08-28 1985-07-31 Dowty Rotol Ltd Foam-containing structures
FR2542695B1 (fr) * 1983-03-18 1985-07-26 Aerospatiale Helice multipale a pas variable a pale s en materiaux composites demontables individuellement, procede de fabrication de telles pales et pales ainsi realisees
US5042968A (en) * 1989-11-02 1991-08-27 United Technologies Corporation Propeller blade subassembly and method for making a propeller blade subassembly
WO2005070647A1 (fr) * 2003-12-31 2005-08-04 Collins & Aikman Products Co. Stratification de produits decoratifs, dans le moule
ES2811230T3 (es) * 2006-04-25 2021-03-11 Cytec Tech Corp Composición de película de revestimiento pigmentada resistente a los rayos UV y a la abrasión de un solo componente para preimpregnados, y método para su preparación

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Also Published As

Publication number Publication date
FI20085570A0 (fi) 2008-06-10
WO2009150298A1 (fr) 2009-12-17

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