EP4297963A1 - Tuyau souple multicouche à faible perméation - Google Patents

Tuyau souple multicouche à faible perméation

Info

Publication number
EP4297963A1
EP4297963A1 EP22706245.2A EP22706245A EP4297963A1 EP 4297963 A1 EP4297963 A1 EP 4297963A1 EP 22706245 A EP22706245 A EP 22706245A EP 4297963 A1 EP4297963 A1 EP 4297963A1
Authority
EP
European Patent Office
Prior art keywords
layer
hose
rubber
hose according
bar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22706245.2A
Other languages
German (de)
English (en)
Inventor
Klaus Brühne
Thomas Stefan
Thomas Klyscz
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.)
ContiTech Techno Chemie GmbH
Original Assignee
ContiTech Techno Chemie GmbH
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 ContiTech Techno Chemie GmbH filed Critical ContiTech Techno Chemie GmbH
Publication of EP4297963A1 publication Critical patent/EP4297963A1/fr
Pending legal-status Critical Current

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
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • 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
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B25/042—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
    • 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
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber 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
    • 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
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/10—Layered products comprising a layer of natural or synthetic rubber next to a fibrous or filamentary layer
    • 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
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/14—Layered products comprising a layer of natural or synthetic rubber comprising synthetic rubber copolymers
    • 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
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/16—Layered products comprising a layer of natural or synthetic rubber comprising polydienes homopolymers or poly-halodienes homopolymers
    • 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
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/18—Layered products comprising a layer of natural or synthetic rubber comprising butyl or halobutyl rubber
    • 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
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/20—Layered products comprising a layer of natural or synthetic rubber comprising silicone rubber
    • 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
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • 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
    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • B32B5/12—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 structural features of a fibrous or filamentary layer characterised by the relative arrangement of fibres or filaments of different layers, e.g. the fibres or filaments being parallel or perpendicular to each other
    • 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
    • B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/04—4 layers
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/05—5 or more layers
    • 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
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide 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
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/202—Conductive
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/51—Elastic
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • 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
    • B32B2597/00—Tubular articles, e.g. hoses, pipes
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall

Definitions

  • the present invention relates to a multi-layer hose, a method for producing such a hose and the use of the hose as a fuel hose or tank ventilation hose.
  • the hose In the case of hoses that are used to transport aggressive media such as acids, fuels or oils, if necessary also at elevated temperatures, there are high demands on the resistance of the hose materials used.
  • the hose is usually provided with an inner layer that has a barrier or blocking function with respect to the medium to be transported.
  • Fluorinated rubber mixtures in particular are used for the inner layer with a barrier layer function in relation to the medium to be transported because of its media and high temperature resistance.
  • FKM mixtures can be mixed with polyols and quaternary ammonium salts, such as described in DE 43 11 549 A1 or in EP 1 096 190 B1, or bisphenolic and/or peroxidic, e.g. described in EP 1 396 670 B1.
  • FTPV fluorothermoplastic vulcanizates
  • hoses should also have dynamic capability, in particular a small minimum bending radius or elasticity, and still be able to be operated at high pressure, for example more than 7 bar.
  • dynamic Strength and impermeability are interrelated material properties that are desired but pose a conflict of goals.
  • the object of the present invention is therefore to provide hoses which both have improved dynamic efficiency and are low in permeation, in particular with regard to fuels, while being able to tolerate operating pressures of at least 7 bar.
  • the outer layer is understood to mean the layer that represents the outermost layer of the hose and is therefore in contact with the environment.
  • the inner layer is understood to mean the layer that represents the innermost layer of the hose and is therefore in contact with the medium inside the hose.
  • the inner layer can also be referred to as a barrier layer.
  • the outer layer and the inner layer can each be formed in one layer or in multiple layers.
  • the individual layers can be the same or different in their quantitative and/or qualitative composition.
  • the elastomer in the outer layer can be rubbers and/or thermoplastic elastomers, which can be used alone or in combination.
  • the single-layer or multi-layer inner layer is based on at least one tetrafluoroethylene (PTFE) / hexafluoropropylene (HFP) / vinylidene fluoride (VDF) terpolymer.
  • Such polymers which are also known as TFIV polymers, are known to the person skilled in the art and preferably have the general formula (I).
  • TFIV polymers are characterized by high flexibility and are resistant to most chemicals, especially fuels. TFIV polymers are also easy to process.
  • Suitable TFIV polymers include, for example, TFIV polymers from Dyneon of type TFIV500 G Z (not electrically conductive) or TFIV polymers of type 505 ESD Z (electrically conductive).
  • the at least one THV polymer is preferably present in the inner layer in an amount of 50% to 100%, preferably 100%.
  • the thickness of the single-layer or multi-layer inner layer based on at least one THV polymer is preferably from 0.1 to 0.4 mm.
  • the inner layer comprises no further polymers apart from the at least one THV polymer.
  • the multi-layer hose according to the invention is characterized in that on the side of the inner layer that is not in contact with the medium that is inside the hose, a further layer comprising at least one perfluoro rubber (FFPM or FFKM) is applied.
  • FFPM perfluoro rubber
  • Other layers based on FFKM or FKM are also possible.
  • Such a layer can be understood as a second barrier layer. This has the advantage that the permeation of fuel can be further reduced.
  • the multi-layer hose according to the invention is characterized in that at least one reinforcement is arranged between the outer layer and the inner layer. This has the advantage that increased pressure resistance and high dynamic strength can be achieved.
  • the multi-layer hose according to the invention is characterized in that a single-layer or multi-layer intermediate layer is arranged between the inner layer and the outer layer. This has the advantage that costs can be reduced by using alternative elastomers.
  • an intermediate layer is understood to be a layer that is not in contact either with the environment of the tube or with the medium inside the tube, but is preferably not a second barrier layer.
  • the single-layer or multi-layer intermediate layer preferably comprises at least one elastomer which is also used in the inner layer or outer layer.
  • the multi-layer hose according to the invention is characterized in that the multi-layer hose comprises the following layers in this order from outside to inside:
  • - a monolayer or multilayer intermediate layer based on at least one elastomer
  • - A single-layer or multi-layer inner layer based on at least one tetrafluoroethylene/hexafluoropropylene/vinylidene fluoride terpolymer.
  • the at least one reinforcement is preferably a textile reinforcement.
  • Suitable textile materials for this purpose are, in particular, threads, cables, braids, woven fabrics, spiralized layers, knitted fabrics and/or warp-knitted fabrics.
  • PA polyamide
  • PA6 PA6.6, PA11, PA12, PA6.10, PA6.12, and/or copolyamide and/or polyester (PES) and/or rayon and/or polyethylene terephthalate (PET) and/or polyethylene naphthalate (PEN) and/or polybutylene terephthalate (PBT) and/or polycarbonate (PC) and/or unsaturated polyester resin (UP ) and or
  • PA polyamide
  • PET polyethylene terephthalate
  • PEN polyethylene naphthalate
  • PC polybutylene terephthalate
  • UP unsaturated polyester resin
  • PCDT Poly(1,4-cyclohexanedimethylene terephthalate)
  • PCDT Poly(1,4-cyclohexanedimethylene terephthalate)
  • PCDT Poly(1,4-cyclohexanedimethylene terephthalate)
  • PCDT Poly(1,4-cyclohexanedimethylene terephthalate)
  • PVAL polyvinyl alcohol
  • PEEK polyoxybenzonaphthoate and/or polyvinyl acetate
  • PEEK polyetheretherketone
  • PEN polyethylene-2 ,6-naphthalate
  • PPO polyphenylene oxide
  • PPS polyphenylene sulfide
  • PBO polyphenylene ether and/or polybenzoxazole
  • POD polyoxadiazole
  • PEI polyetherimide
  • PEI polyetherimide
  • the materials for the reinforcement layer can be used alone or in combination, i.e. so-called flybrid systems are also suitable.
  • the reinforcement layer comprising at least one reinforcement
  • all layers are preferably made from one of the above-mentioned materials for reinforcement layers.
  • the multiple layers of reinforcements are preferably connected to one another by means of an intervening layer.
  • the layer preferably comprises at least one elastomer which is also used in the inner layer, outer layer and/or intermediate layer as defined above.
  • the individual reinforcements preferably comprise threads, filament fibers, monofilaments, staple fibers, threads, yarns and/or cables wound helically around the hose. If there are several reinforcement members, they can be wound helically around the hose in the same direction. In another embodiment, successive layers have an opposite helical turn around the tubing.
  • the individual reinforcements comprise a mesh.
  • the warp and weft threads are both preferably not aligned parallel or along the length of the hose, but rather at an angle with respect to the length of the hose, so that Warp and weft threads, viewed individually, are also wound helically around the tube.
  • the multi-layer hose according to the invention is characterized in that the at least one elastomer of the outer layer and, if present, the at least one elastomer of the intermediate layer are selected independently of one another and from the group comprising ethylene-propylene copolymer (EPM), ethylene-propylene -diene copolymer (EPDM), nitrile rubber (NBR), (partially) hydrogenated nitrile rubber (FINBR), fluorine rubber (FPM or FKM), chloroprene rubber (CR), natural rubber (NR), styrene-butadiene rubber ( SBR), isoprene rubber (IR), butyl rubber (HR), bromobutyl rubber (BIIR), chlorobutyl rubber (CUR), butadiene rubber (BR), chlorinated polyethylene (CM), chlorosulfonated polyethylene (CSM), polyepichlorohydrin (ECO), ethylene -Vinyl acetate rubber (EVA)
  • the amount of elastomer in each layer is from 50% to 100%.
  • the multi-layer hose according to the invention is characterized in that it has the following structure: Inner layer: THV
  • ECO, CM, AEM and/or ACM are preferred in the outer layer, since these have the best resistance to environmental media and are inexpensive and electrically conductive.
  • the amount of ECO, CM, AEM and/or ACM in the outer layer is from 50% to 100%.
  • the outer layer is preferably electrically conductive, preferably through the use of ACM or CM.
  • ECO In the intermediate layer, preference is given to ECO, AEM and/or ACM, in particular ECO, since ECO is resistant to petrol and AEM and ACM are resistant to diesel.
  • the amount of ECO, AEM and/or ACM in the interlayer is from 50% to 100%.
  • the at least one elastomer can be crosslinked or uncrosslinked.
  • (Irreversibly) crosslinked elastomers are generally produced by vulcanization of natural and synthetic rubbers. Vulcanization means the conversion of plastic, rubber-like, unsaturated or saturated polymers into the rubber-elastic state, traditionally through crosslinking with sulfur (compounds). The individual polymer chains are irreversibly connected to one another by covalent bonds.
  • the inner layer is not electrically conductive and the outer layer is not electrically conductive. In one embodiment, the inner layer is electrically conductive and the outer layer is not electrically conductive.
  • the inner layer is not electrically conductive and the outer layer is electrically conductive.
  • the inner layer is electrically conductive and the outer layer is electrically conductive.
  • the multi-layer hose according to the invention is characterized in that the inner layer and/or the outer layer are electrically conductive.
  • additives can be added to the individual layers. These include, for example, soot, graphene and/or carbon nanotubes.
  • Conductive carbon blacks are particularly preferred here, so that a value of preferably ⁇ 10 L 6 ohms can be achieved on the finished part.
  • the multi-layer hose according to the invention is characterized in that the minimum bending radius (Rmin) is 20 mm for DN 3.2 to DN 40, preferably for DN 7.3.
  • Rmin minimum bending radius
  • the individual reinforcements preferably comprise threads or cables made of the above-mentioned materials wound helically around the hose.
  • the multi-layer hose according to the invention is characterized in that the at least one reinforcement is arranged at an angle in relation to the length direction of the multi-layer hose, i.e. is helically wound around it, and this reinforcement angle is from 30° to 57°, preferably from 44 ° to 55°.
  • the individual reinforcements comprise a braid.
  • the warp and weft threads are preferably not aligned parallel or along the length of the hose, but at an angle with respect to the length of the hose, so that the warp and weft threads are also helically wound around the hose when viewed individually.
  • the angle for the warp and/or weft threads considered individually is preferably from 30° to 57°, preferably from 44° to 55°.
  • the multi-layer hose according to the invention is characterized in that the inner layer and/or the outer layer and/or if present the intermediate layer and/or any other layer contained comprises at least one additive, wherein the at least one additive is selected from the group , comprising silicon dioxide (silica/silicic acid), kaolin, titanium dioxide, fatty acids, plasticizers, lubricants, odor absorbers, antimicrobial substances, organic and inorganic color pigments, adhesion promoters, processing aids, flame retardants, aging inhibitors, metal oxides and metal hydroxides, retarders, activators, factice, graphite, carbon nanotubes, carbon fibers and/or soot.
  • the at least one additive is selected from the group , comprising silicon dioxide (silica/silicic acid), kaolin, titanium dioxide, fatty acids, plasticizers, lubricants, odor absorbers, antimicrobial substances, organic and inorganic color pigments, adhesion promoters, processing aids, flame retardants, aging inhibitors, metal
  • additives can each be present in an amount of from 0.1 to 200 phr in each layer of the multi-layer hose.
  • the multi-layer hose according to the invention is characterized in that the multi-layer hose can be used at a minimum pressure of 0 bar to 40 bar or at least 7 bar.
  • the multi-layer hose according to the invention is characterized in that the multi-layer hose can be used at a pressure of 5 bar to 40 bar in the flow. In another preferred embodiment, the multi-layer hose according to the invention is characterized in that the multi-layer hose can be used at a pressure of 0 bar to 5 bar in the return.
  • the multilayer hose of the present invention is not particularly limited as to the manufacturing method.
  • the individual layers of the multilayer flexible hose according to the invention such as the inner layer, the intermediate layer or the outer layer, can be produced by the usual methods known to those skilled in the art.
  • the multilayer flexible hose according to the invention is particularly preferably produced by a method in which the inner layer and the outer layer and optionally the intermediate layer are produced by extrusion, calendering and/or injection molding in order to obtain a hose blank, then optionally made up with the at least one reinforcement and is subjected to a final vulcanization.
  • the present invention also relates to a multi-layer flexible hose obtainable according to the method described above.
  • the multi-layer hose according to the invention is not subject to any restrictions with regard to its use and can in particular be a fuel hose, tank ventilation hose, brake hose, clutch hose, cooling water hose, chemical hose, heatable hose, drinking water hose, food hose, manifold hose, offshore and marine hose, bunker hose, air conditioning hose or paint spray hose.
  • the multi-layer flexible hose according to the invention is as described above or obtainable by the method described above preferably a fuel hose or a tank ventilation hose, in particular in a motor vehicle.
  • the present invention also relates to a multi-layer flexible hose, as described above or obtainable by the method described above, as a fuel hose, in particular in a motor vehicle, preferably at an operating pressure of 0 bar to 40 bar or more than 7 bar (up to about 40 bar) , or at 5 bar to 40 bar, preferably in a forward flow, or at 0 bar to 5 bar, preferably in a return flow.
  • the hose is more flexible compared to the series. It can therefore be mounted more easily in installation situations with tight bending radii. The better dynamic
  • FIG. 1 4-layer hose according to the invention with a helically wound reinforcement. (01) inner layer, TFIV; (02) intermediate layer, ECO, (03) reinforcement, aramid helically wound; (04) Outer layer, CM (electrically conductive).
  • FIG. 2 4-layer hose according to the invention with braided reinforcement. (01) inner layer, TFIV; (02) intermediate layer, ECO, (03) reinforcement, braided aramid; (04) Outer layer, CM (electrically conductive).
  • Figure 3 Comparison of fuel permeation of fuel hoses according to DIN 73379.
  • Figure 4 Permeation comparison TFIV vs. FKM in % after CARB temperature cycle.
  • Hoses according to the invention with the following structure were produced:
  • Inner layer TFIV polymer of type TFIV500 G Z or 505 ESD Z
  • Intermediate layer ECO (free of heavy metals)
  • Aramid (helically wound or braided)
  • CM electrically conductive
  • Inner layer TFIV polymer of type TFIV500 G Z or 505 ESD Z
  • Intermediate layer ECO (free of heavy metals)
  • CM electrically conductive
  • Multi-layer hoses with the following structure are generally suitable:
  • Inner layer THV polymer of type THV500 G Z or 505 ESD Z
  • Intermediate layer ECO and/or AEM
  • Aramid (helically wound or braided)
  • Outer layer ECO, CM, AEM and/or ACM
  • the construction can also be designed as a 5-layer hose with an additional FKM barrier layer.
  • hoses are characterized in particular by the fact that they have both dynamic efficiency and elasticity as well as low permeation, especially with regard to fuels, and can tolerate operating pressures of at least 7 bar.
  • Example 2
  • the fuel permeation of fuel hoses was measured according to DIN 73379 (7-2014).
  • the test temperature was 80°C
  • the test medium was FAM-B
  • FAM-B being a standardized test fuel as defined in DIN 51604-2:1984.
  • a hose with a TFIV/ECO/AR/ACM structure was compared with a hose with a F-TPV/ECO/AR/ACM structure (from inside to outside).
  • SHED Sealed Housing for Evaporative Determination (defined test chambers).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un tuyau souple multicouche qui présente une couche externe monocouche ou multicouche à base d'au moins un élastomère et d'une couche interne monocouche ou multicouche à base d'au moins un terpolymère de tétrafluoroéthylène/hexafluoropropylène/fluorure de vinylidène, un procédé de fabrication d'un tel tuyau souple et l'utilisation du tuyau souple en tant que tuyau souple de carburant.
EP22706245.2A 2021-02-26 2022-01-14 Tuyau souple multicouche à faible perméation Pending EP4297963A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021201848.3A DE102021201848A1 (de) 2021-02-26 2021-02-26 Mehrlagiger permeationsarmer Schlauch
PCT/DE2022/200001 WO2022179668A1 (fr) 2021-02-26 2022-01-14 Tuyau souple multicouche à faible perméation

Publications (1)

Publication Number Publication Date
EP4297963A1 true EP4297963A1 (fr) 2024-01-03

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EP (1) EP4297963A1 (fr)
DE (1) DE102021201848A1 (fr)
WO (1) WO2022179668A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2737527B2 (ja) 1992-04-08 1998-04-08 豊田合成株式会社 複層ゴムホース及びその製造方法
US6340511B1 (en) 1999-10-27 2002-01-22 Tokai Rubber Industries, Ltd. Fuel hose
DE50201910D1 (de) 2002-09-06 2005-02-03 Contitech Schlauch Gmbh Schlauch
DE102014223979A1 (de) * 2014-11-25 2016-05-25 Contitech Mgw Gmbh Kautschukmischung und Schlauch enthaltend die Kautschukmischung
DE102017223546A1 (de) * 2017-12-21 2019-06-27 Contitech Ag Barriereschicht für Schläuche
JP2022533707A (ja) * 2019-05-22 2022-07-25 サン－ゴバン パフォーマンス プラスティックス コーポレイション 多層可撓性チューブ及びその製作方法

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DE102021201848A1 (de) 2022-09-01

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