WO2011069975A1 - Verwendung von schichtaufbauten in windkraftanlagen - Google Patents

Verwendung von schichtaufbauten in windkraftanlagen Download PDF

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Publication number
WO2011069975A1
WO2011069975A1 PCT/EP2010/068992 EP2010068992W WO2011069975A1 WO 2011069975 A1 WO2011069975 A1 WO 2011069975A1 EP 2010068992 W EP2010068992 W EP 2010068992W WO 2011069975 A1 WO2011069975 A1 WO 2011069975A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
plastic
optionally
fiber
reaction mixture
Prior art date
Application number
PCT/EP2010/068992
Other languages
German (de)
English (en)
French (fr)
Inventor
Dirk Passmann
Klaus Franken
Stefan Lindner
Original Assignee
Bayer Materialscience Ag
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
Priority to KR1020127015048A priority Critical patent/KR101761954B1/ko
Priority to RU2012129266/12A priority patent/RU2549070C9/ru
Priority to IN5174DEN2012 priority patent/IN2012DN05174A/en
Priority to DK10784326.0T priority patent/DK2509790T3/da
Priority to US13/514,523 priority patent/US10293586B2/en
Priority to MX2012006685A priority patent/MX348378B/es
Priority to JP2012542497A priority patent/JP6000852B2/ja
Priority to EP10784326.0A priority patent/EP2509790B1/de
Application filed by Bayer Materialscience Ag filed Critical Bayer Materialscience Ag
Priority to PL10784326T priority patent/PL2509790T3/pl
Priority to CN201080056524.2A priority patent/CN102753345B/zh
Priority to ES10784326T priority patent/ES2899656T3/es
Priority to BR112012014193A priority patent/BR112012014193A2/pt
Priority to CA2783986A priority patent/CA2783986A1/en
Priority to AU2010329978A priority patent/AU2010329978B2/en
Publication of WO2011069975A1 publication Critical patent/WO2011069975A1/de
Priority to ZA2012/03805A priority patent/ZA201203805B/en
Priority to US15/799,511 priority patent/US11904582B2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/0025—Producing blades or the like, e.g. blades for turbines, propellers, or wings
    • B29D99/0028—Producing blades or the like, e.g. blades for turbines, propellers, or wings hollow blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/095—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/02—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments
    • B32B17/04—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments bonded with or embedded in a plastic substance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/066—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/4244—Polycondensates having carboxylic or carbonic ester groups in the main chain containing oxygen in the form of ether groups
    • C08G18/4247—Polycondensates having carboxylic or carbonic ester groups in the main chain containing oxygen in the form of ether groups derived from polyols containing at least one ether group and polycarboxylic acids
    • C08G18/4252—Polycondensates having carboxylic or carbonic ester groups in the main chain containing oxygen in the form of ether groups derived from polyols containing at least one ether group and polycarboxylic acids derived from polyols containing polyether groups and polycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • 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
    • F03D1/0608—Rotors characterised by their aerodynamic shape
    • F03D1/0633—Rotors characterised by their aerodynamic shape 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
    • 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
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • 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
    • B29K2875/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as mould material
    • 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
    • B29L2031/082—Blades, e.g. for helicopters
    • B29L2031/085—Wind turbine blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2603/00—Vanes, blades, propellers, rotors with blades
    • 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
    • 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
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the 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

  • the invention relates to the use of layer structures in the manufacture of rotor blades for wind turbines and rotor blades for wind turbines.
  • the previously known rotor blades for wind turbines consist of fiber-reinforced plastics based on resins as matrix material, such as polyester resins (UP), vinyl ester resins (VE), epoxy resins (EP).
  • UP polyester resins
  • VE vinyl ester resins
  • EP epoxy resins
  • the production of the sheets is mainly borrowed so that in each case a lower and an upper half of the wing are produced in one piece. These two halves are then placed on each other and glued. Struts or straps are glued in for reinforcement.
  • the rotor blades for wind turbines of the aforementioned resins are usually prepared by hand lamination, hand lamination with the aid of prepreg technology, by winding method or the vacuum-assisted infusion method.
  • manual lamination a mold is first prepared by applying a release agent and optionally a gelcoat to the mold surface. Subsequently, glass scrims with unidirectional or biaxial orientation are successively placed in the mold. Thereafter, the resin is applied to the scrim and manually pressed by rolling into the scrim. This step can be repeated accordingly.
  • straps can be incorporated as reinforcement material and other parts, such as lightning protection devices.
  • a so-called spacer layer usually made of balsa wood, polyvinyl chloride (PVC) - or polyurethane (PUR) foam, and a second glass fiber reinforced layer applied analogously to the first.
  • PVC polyvinyl chloride
  • PUR polyurethane
  • prepregs impregnated with resin prefabricated glass mats
  • the partial automation for the production of the prepregs which is carried out in comparison with the simple manual lamination, leads to improved quality consistency in rotor production
  • the protection of workers from the volatile compounds contained in the liquid resin mixtures requires a considerable effort (job security, etc.).
  • the molds are prepared by a release agent and possibly a gelcoat Then the dry fiber mats are put into the mold according to an exact manufacturing plan. The first layer will later be the outermost layer of the rotor blade, then the spacers will be inserted, whereupon fiber mats will be placed again The entire mold is then hermetically sealed with a vacuum-resistant film, and air is removed from fiber mats and spacers from the prepared mold before the resin is injected into the mold (space between film and mold) at various points This procedure has - as well as the two previously mentioned - the disadvantage that the necessary curing time to demolding of the component with up to 12 hours is very long and the productivity of the system is very limited.
  • the rotor blades are made with polyurethane as a plastic instead of the above-mentioned resins.
  • polyurethane is used as a plastic according to the invention; The fiber layers used in the outer shell are thus applied.
  • the invention relates to rotor blades for wind turbines, which have an outer shell, which consists at least partially of a layer structure with the following layers a) a release agent layer
  • Another object of the invention is a method for producing the rotor blades according to the invention for wind turbines, which have an outer shell, which consists at least partially of a layer structure with the following layers a) a release agent layer
  • the fiber layers are treated with a reaction mixture for the production of polyurethane as a plastic.
  • Another object of the invention is the use of a layer structure in the manufacture of rotor blades for wind turbines, wherein the layer structure has the following layers
  • Silicone or wax-containing release agents are preferably used for the release agent layer. These are known from the literature.
  • the gelcoat layer preferably consists of polyurethane, epoxy, unsaturated polyester or vinyl resins.
  • a fibrous layer preferably Glasturawirrlagen, glass fiber fabrics and -gelege, cut or ground glass or mineral fibers and fiber mats, nonwovens and -wirirke on the basis of polymer, mineral, carbon, glass or aramid fibers and mixtures thereof, Glass fiber mats or glass fiber webs are particularly preferably used.
  • a spacer layer preferably plastic foams, wood or metal can be used.
  • the optionally used plastic film can remain in the production of the rotor blade as a layer in the enclosure or removed during demolding half of the rotor blade.
  • it serves to seal the mold half-shell, which is equipped with the aforementioned layers, in the production process for evacuation before filling with the liquid resin mixture.
  • Polyurethanes are obtainable by the reaction of polyisocyanates with compounds having at least two isocyanate-reactive hydrogen atoms.
  • the reaction mixture of isocyanate component and compounds having at least two isocyanate-reactive hydrogen atoms is injected into the prepared evacuated layer structure.
  • Suitable compounds having at least two isocyanate-reactive hydrogen atoms are generally those which have two or more reactive groups, such as, for example, OH groups, SH groups, NH groups, NH 2 groups and CH-acidic groups, in the molecule wear.
  • polyether polyols and / or polyester polyols particularly preferably polyether polyols.
  • the polyol formulation preferably contains as polyols those having an OH number of 200 to 1830 mg KOH / g, preferably from 300 to 1000 mg KOH / g and more preferably from 350 to 500 mg KOH / g.
  • the viscosity of the polyols is preferably ⁇ 800 mPas (at 25 ° C).
  • the polyols have at least 60% secondary OH groups, preferably at least 80% secondary OH groups and more preferably 90% secondary OH groups.
  • Polyether polyols based on propylene oxide are particularly preferred.
  • the polyisocyanate component used are the customary aliphatic, cycloaliphatic and, in particular, aromatic di- and / or polyisocyanates.
  • suitable polyisocyanates are 1,4-butylene diisocyanate, 1,5-pentane diisocyanate, 1,6-hexamethylene diisocyanate (HDI), isophorone diisocyanate (IPDI), 2,2,4- and / or 2,4,4-trimethylhexamethylene diisocyanate, bis ( 4,4'-isocyanatocyclohexyl) methane or mixtures thereof with the remaining isomers, 1,4-cyclohexylene diisocyanate, 1,4-phenylene diisocyanate, 2,4- and / or 2,6-toluene diisocyanate (TDI), 1,5-naphthylene diisocyanate, 2,2'- and / or 2,4'- and / or 4,4'-diphenylmethane di
  • the isocyanate used is preferably diphenylmethane diisocyanate (MDI) and in particular mixtures of diphenylmethane diisocyanate and polyphenylene polymethylene polyisocyanate (pMDI).
  • Dic mixtures of diphenylmethane diisocyanate and polyphenylenepolymethylene polyisocyanate (pMDI) have a preferred monomer content of between 40 and 100% by weight, preferably between 50 and 90% by weight, more preferably between 60 and 80% by weight.
  • the NCO content of the polyisocyanate used should preferably be above 25% by weight, preferably above 30% by weight, particularly preferably above 31.4% by weight.
  • the MDI used should have a content of 2,2'-diphenylmethane diisocyanate and of 2,4'-diphenylmethane diisocyanate of at least 3
  • the viscosity of the isocyanate should preferably be ⁇ 250 mPas (at 25 ° C.), preferably ⁇ 100 mPas (at 25 ° C.) and particularly preferably ⁇ 50 mPas (at 25 ° C.).
  • the polyurethane reaction mixture may preferably contain fillers, such as carbon nanotubes, barium sulfate, titanium dioxide, short glass fibers, or natural fibrous or plate-like minerals, such as the known reactive components and additives and additives. Wollastonite or Muskowite included. Defoamers, catalysts and latent catalysts are preferably used as additives and additives. Other known additives and additives can be used as needed.
  • Suitable polyurethane systems are especially those which are transparent. Since in the production of larger moldings a low viscosity is necessary for a uniform filling of the mold, polyurethane systems are therefore particularly suitable which have a viscosity of ⁇ 5000 mPas (at 25 ° C., 30 minutes after mixing the components), preferably ⁇ 2000 mPas , particularly preferably 1000 mPas.
  • the reaction ratio between isocyanate component and compounds having at least two isocyanate-reactive hydrogen atoms is selected such that the ratio of the number of isocyanate groups to the number of isocyanate-reactive groups is between 0.9 and 1.5, preferably between 1.0 and 1 in the reaction mixture , 2, more preferably between 1.02 and 1.1.
  • reaction mixture of isocyanate component and compounds having at least two isocyanate-reactive hydrogen atoms at a temperature between 20 and 80 ° C, more preferably between 25 and 40 ° C injected.
  • the curing of the polyurethane can be accelerated by heating the mold.
  • the injected reaction mixture of isocyanate component and compounds having at least two isocyanate-reactive hydrogen atoms at a temperature between 40 and 160 ° C, preferably between 60 and 120 ° C, more preferably between 70 and 90 ° C, cured.
  • Moldings (panels) of different polyurethane systems were made and compared to a standard epoxy resin system.
  • the plate size was 17cm * 17cm with a thickness of 4mm.
  • the demolding time is the time after which the PU specimen can be removed manually from the plate shape without deformation.
  • Viscosity was determined 30 minutes after blending the components because for the production of larger moldings a low viscosity is necessary for a certain time for uniform filling of the mold. example 1
  • Baygal® K 55 polyether polyol from Bayer MaterialScience AG, OH number: 385 ⁇ 15 mg KOH / g, viscosity at 25 ° C: 600 ⁇ 50 mPas
  • 65.3 g Baymidur® K 88 product of Bayer MaterialScience AG; mixture of diphenylmethane diisocyanate and polyphenylene polymethylene polyisocyanate, NCO content 31.5 ⁇ 0.5% by weight, viscosity at 25 ° C.: 90 ⁇ 20 mPas
  • the solution was poured into a plate mold and stored for one hour at room temperature. Thereafter, the sample was annealed at 80 ° C.
  • the gelling time was about 70 minutes and the demolding time was two hours.
  • the test specimen had a hardness of 76 Shore D.
  • the viscosity at 25 ° C was 15 minutes after mixing the components 1540 mPas.
  • Baygal® K 55 polyether polyol from Bayer MaterialScience AG, OH number: 385 ⁇ 15 mg KOH / g; viscosity at 25 ° C.: 600 ⁇ 50 mPas
  • Baymidur® VP.KU 3-5009 Bayer MaterialScience AG; mixture of diphenylmethane diisocyanate and polyphenylenepolymethylene polyisocyanate, NCO content 31.5-33.5% by weight, viscosity at 25 ° C.: 15-30 mPas
  • the solution was poured into a plate mold and stored for one hour at room temperature. Thereafter, the sample was annealed at 80 ° C. The demolding time was two hours.
  • the test specimen had a hardness of 76 Shore D.
  • the viscosity at 25 ° C was 974 mPas 30 minutes after mixing the components.
  • Larit RIM 135 (L-135i) (product of Lange + Ritter) were stirred with 60 g of hardener Larit RIMH 137 (product of Lange + Ritter) at room temperature and with Degassed negative pressure. The solution was poured into a plate mold and allowed to stand for one hour
  • the test specimen had a hardness of 76 Shore D.
  • the polyurethane system could be removed significantly faster.
  • the faster demoulding time of the polyurethane system allows for higher productivity, since the occupation time of the molds can be significantly reduced and thus more moldings can be produced.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Sustainable Development (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Wind Motors (AREA)
  • Laminated Bodies (AREA)
  • Reinforced Plastic Materials (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Polyurethanes Or Polyureas (AREA)
PCT/EP2010/068992 2009-12-12 2010-12-06 Verwendung von schichtaufbauten in windkraftanlagen WO2011069975A1 (de)

Priority Applications (16)

Application Number Priority Date Filing Date Title
PL10784326T PL2509790T3 (pl) 2009-12-12 2010-12-06 Zastosowanie struktur warstwowych w turbinach wiatrowych
RU2012129266/12A RU2549070C9 (ru) 2009-12-12 2010-12-06 Применение слоистых конструкций в ветросиловых установках
CN201080056524.2A CN102753345B (zh) 2009-12-12 2010-12-06 多层结构在风力发电站中的应用
US13/514,523 US10293586B2 (en) 2009-12-12 2010-12-06 Use of layer structures in wind power plants
MX2012006685A MX348378B (es) 2009-12-12 2010-12-06 Uso de estructuras en capas en plantas eolicas.
JP2012542497A JP6000852B2 (ja) 2009-12-12 2010-12-06 風力発電プラントにおける層状上部構造物の使用
EP10784326.0A EP2509790B1 (de) 2009-12-12 2010-12-06 Verwendung von schichtaufbauten in windkraftanlagen
KR1020127015048A KR101761954B1 (ko) 2009-12-12 2010-12-06 풍력 발전소에서의 층 구조의 용도
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DK10784326.0T DK2509790T3 (da) 2009-12-12 2010-12-06 Anvendelse af lagstrukturer i vindmøller
ES10784326T ES2899656T3 (es) 2009-12-12 2010-12-06 Uso de estructuras estratificadas en plantas de energía eólica
BR112012014193A BR112012014193A2 (pt) 2009-12-12 2010-12-06 uso de superestruturas em camadas em usinas eólicas
CA2783986A CA2783986A1 (en) 2009-12-12 2010-12-06 Use of layer superstructures in wind power plants
AU2010329978A AU2010329978B2 (en) 2009-12-12 2010-12-06 Use of layer superstructures in wind power plants
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