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DE102019214185A1 - Flexible article based on at least one elastomer mixture - Google Patents

Flexible article based on at least one elastomer mixture Download PDF

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Publication number
DE102019214185A1
DE102019214185A1 DE102019214185.4A DE102019214185A DE102019214185A1 DE 102019214185 A1 DE102019214185 A1 DE 102019214185A1 DE 102019214185 A DE102019214185 A DE 102019214185A DE 102019214185 A1 DE102019214185 A1 DE 102019214185A1
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DE
Germany
Prior art keywords
rubber
layer
flexible article
layer based
resorcinol
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
DE102019214185.4A
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German (de)
Inventor
Matthias Lückmann
Barbara Passon-Wesseloh
Heike Fennel
Gabriele Rother
Jonathan Hubrich
Jens Storre
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 Elastomer Beschichtungen De GmbH
Original Assignee
ContiTech Elastomer Beschichtungen GmbH
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Application filed by ContiTech Elastomer Beschichtungen GmbH filed Critical ContiTech Elastomer Beschichtungen GmbH
Priority to DE102019214185.4A priority Critical patent/DE102019214185A1/en
Publication of DE102019214185A1 publication Critical patent/DE102019214185A1/en
Pending legal-status Critical Current

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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
    • 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
    • B32B5/024—Woven fabric
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B19/00—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica
    • B32B19/04—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica next to another layer of the same or of a different material
    • B32B19/043—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica next to another layer of the same or of a different material of natural rubber or synthetic rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
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    • 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
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    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/12—Layered products comprising a layer of natural or synthetic rubber comprising natural rubber
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    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
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    • 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
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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

Die Erfindung betrifft einen flexiblen Artikel enthaltend wenigstens eine Schicht auf der Basis wenigstens eines Fluorkautschuks (FKM) und wenigstens eine Schicht auf der Basis wenigstens eines weiteren polaren Kautschuks, wobei eine Schicht auf der Basis wenigstens eines Fluorkautschuks (FKM) und eine Schicht auf der Basis wenigstens eines weiteren polaren Kautschuks über eine Haftmischung einen dauerfesten Haftverbund bilden, wobei die Haftmischung- wenigstens einen Kautschuk und Hexamethoxymethylaminether (HMMM) und wenigstens ein Resorcin (1,3-Dihydroxybenzol) oder- wenigstens einen Kautschuk und Hexamethoxymethylaminether (HMMM) und wenigstens ein vorkondensiertes Resorcinenthält.The invention relates to a flexible article containing at least one layer based on at least one fluororubber (FKM) and at least one layer based on at least one further polar rubber, one layer based on at least one fluororubber (FKM) and one layer on the base at least one further polar rubber form a permanent adhesive bond via an adhesive mixture, the adhesive mixture - at least one rubber and hexamethoxymethylamine ether (HMMM) and at least one resorcinol (1,3-dihydroxybenzene) or- at least one rubber and hexamethoxymethylamine ether (HMMM) and at least one precondensed Contains resorcinol.

Description

Die Erfindung betrifft einen flexiblen Artikel enthaltend wenigstens eine Schicht auf der Basis wenigstens eines Fluorkautschuks (FKM) und wenigstens eine Schicht auf der Basis wenigstens eines weiteren polaren Kautschuks.The invention relates to a flexible article containing at least one layer based on at least one fluororubber (FKM) and at least one layer based on at least one further polar rubber.

Bei einem derartigen flexiblen Elastomerartikel kann es sich um flexible Behälter, wie bspw. flexible Kraftstoffbehälter für Fahrzeuge, Boote, etc., Zelte, Planen, Membranen, Schutzanzüge, Faltenbälge, Drucktücher, Schläuche, Antriebsriemen, Fördergurte, Luftfedern, Schwingungsdämpfer und dergleichen handeln.Such a flexible elastomer article can be flexible containers, such as, for example, flexible fuel containers for vehicles, boats, etc., tents, tarpaulins, membranes, protective suits, bellows, pressure blankets, hoses, drive belts, conveyor belts, air springs, vibration dampers and the like.

Insbesondere flexible Kraftstoffbehälter müssen zum einen eine gute Medienbeständigkeit gegenüber Chemikalien, insbesondere Kraftstoffen, zum anderen aber auch eine gute Druck-, Temperatur- und Rissbeständigkeit aufweisen.In particular, flexible fuel tanks must on the one hand have good media resistance to chemicals, in particular fuels, but on the other hand also have good pressure, temperature and crack resistance.

Hierzu bestehen die Kraftstoffbehälter in der Regel aus wenigstens zwei verschiedenen Kautschukschichten. Je nach Anwendung können auch noch zusätzliche Schichten aus textilen Festigkeitsträgern vorhanden sein, die zusätzliche Festigkeit und Stabilität ermöglichen.For this purpose, the fuel tanks usually consist of at least two different rubber layers. Depending on the application, additional layers of textile reinforcements can also be present, which enable additional strength and stability.

Zumeist ist die nach innen liegende Schicht, d.h. die Schicht, die sich in direktem Kontakt mit dem Kraftstoff befindet, aus wenigstens einem kraftstoffbeständigen Kautschuk aufgebaut. Da einige dieser kraftstoffbeständigen Kautschuke allerdings keine ausreichende Permeationsbeständigkeit aufweisen, muss in diesem Fällen eine zusätzliche Sperrschicht eingebaut werden. Als Material für die Sperrschicht lässt sich Fluorkautschuk (FKM) verwenden. Fluorkautschuk bietet eine gute Chemikalienbeständigkeit und als Kautschuk auch eine ausreichende Flexibilität.In most cases, the inward-facing layer, i.e. the layer that is in direct contact with the fuel, is made up of at least one fuel-resistant rubber. However, since some of these fuel-resistant rubbers do not have sufficient permeation resistance, an additional barrier layer must be installed in these cases. Fluororubber (FKM) can be used as the material for the barrier layer. Fluororubber offers good chemical resistance and, as a rubber, also offers sufficient flexibility.

Die zweite sich in direktem Kontakt zu der Fluorkautschukschicht befindliche Schicht ist meist auf einem weiteren Kautschuk aufgebaut.The second layer, which is in direct contact with the fluororubber layer, is usually built up on a further rubber.

Kritisch hierbei ist, dass sich Fluorkautschuk an die meisten anderen Kautschuke nur sehr schwer anbinden lässt, wodurch in der Regel kein ausreichender und dauerfester Haftverbund möglich ist.The critical point here is that fluororubber is very difficult to bond to most other rubbers, which means that, as a rule, an adequate and permanent adhesive bond is not possible.

Die Aufgabe der vorliegenden Erfindung ist es daher, einen flexiblen Artikel mit wenigstens einer Schicht auf der Basis eines Fluorkautschuks (FKM) und wenigstens eine Schicht auf der Basis wenigstens eines weiteren polaren Kautschuks bereitzustellen, der sich durch einen guten dauerfesten Haftverbund dieser beiden Schichten auszeichnet.The object of the present invention is therefore to provide a flexible article with at least one layer based on a fluorine rubber (FKM) and at least one layer based on at least one other polar rubber, which is characterized by a good permanent adhesive bond between these two layers.

Die Aufgabe wird dadurch gelöst, dass die Fluorkautschukschicht und die Schicht auf der Basis wenigstens eines weiteren polaren Kautschuks über eine Haftmischung einen dauerfesten Haftverbund bilden, wobei die Haftmischung

  • - wenigstens einen Kautschuk und Hexamethoxymethylaminether (HMMM) und wenigstens ein Resorcin (1,3-Dihydroxybenzol) oder
  • - wenigstens einen Kautschuk und Hexamethoxymethylaminether (HMMM) und wenigstens ein vorkondensiertes Resorcin enthält.
The object is achieved in that the fluororubber layer and the layer based on at least one further polar rubber form a permanent adhesive bond via an adhesive mixture, the adhesive mixture
  • - At least one rubber and hexamethoxymethylamine ether (HMMM) and at least one resorcinol (1,3-dihydroxybenzene) or
  • - Contains at least one rubber and hexamethoxymethylamine ether (HMMM) and at least one precondensed resorcinol.

Überraschenderweise hat sich gezeigt, dass sich eine gute Haftung der Fluorkautschukschicht zu der weiteren Schicht auf der Basis eines polaren Kautschuks ergibt, wenn die Haftmischung wenigstens einen Kautschuk und Hexamethoxymethylaminether (HMMM) und wenigstens ein Resorcin (1,3-Dihydroxybenzol) oder Hexamethoxymethylaminether (HMMM) und wenigstens ein vorkondensiertes Resorcin enthält.Surprisingly, it has been shown that good adhesion of the fluororubber layer to the further layer based on a polar rubber results if the adhesive mixture contains at least one rubber and hexamethoxymethylamine ether (HMMM) and at least one resorcinol (1,3-dihydroxybenzene) or hexamethoxymethylamine ether (HMMM ) and contains at least one precondensed resorcinol.

Unpolare Kautschuke sind aus reinen Kohlenwasserstoff-Ketten aufgebaut. Sie sind wegen ihrer Unpolarität nicht beständig gegen unpolare Stoffe (gleiches löst gleiches), wie Benzin und Mineralöle, zeigen aber in polaren Stoffen wie Aceton und Ketonen gute Resistenz. Polare Kautschuke hingegen enthalten in ihrem Aufbau polare Bausteine, wie Cl, F oder Gruppen, wie -CN, COOC2H5). Sie sind gegen unpolare Stoffe beständig und gegen polare unbeständig.Non-polar rubbers are made up of pure hydrocarbon chains. Because of their non-polarity, they are not resistant to non-polar substances (the same dissolves the same), such as gasoline and mineral oils, but show good resistance in polar substances such as acetone and ketones. Polar rubbers, on the other hand, contain polar building blocks such as Cl, F or groups such as -CN, COOC2H5) in their structure. They are resistant to non-polar substances and unstable to polar ones.

Unpolare Kautschuke sind bspw. natürliches Polyisopren (NR), synthethisches Polyisopren (IR), Styrolbutadienkautschuk (SBR), Butadienkautschuk (BR), Polynorbornenkautschuk (PNR), Butylkautschuk (IIR), Brombutylkautschuk (BIIR), Chlorbutylkautschuk (CIIR) oder Ethylenpropylenkautschuke (EPM oder EPDM).Non-polar rubbers are, for example, natural polyisoprene (NR), synthetic polyisoprene (IR), styrene-butadiene rubber (SBR), butadiene rubber (BR), polynorbornene rubber (PNR), butyl rubber (IIR), bromobutyl rubber (BIIR) or ethylene propyl rubber (BIIR), chlorobutyl rubber (CIIR) or EPDM).

Bei den polaren Kautschuken gemäß der vorliegenden Erfindung handelt es sich bevorzugt um Nitrilkautschuk (NBR), Silikonkautschuke (MFQ, MPVQ, MFQ, MQ, MVQ, MPQ), Chloroprenkautschuk (CR), chloriertem Polyethylenkautschuk (CM), chlorsulfoniertes Polyethylen (CSM), alkyliertes chlorsulfoniertes Polyethylen (ACSM), Acrylatkautschuk (ACM), Epichlorhydrinkautschuk (ECO), Polyester-Urethan-Kautschuk (AU), Polyetherurethankautschuk (EU) oder Ethylen-Vinylacetat-Kautschuk (EVA).The polar rubbers according to the present invention are preferably nitrile rubber (NBR), silicone rubbers (MFQ, MPVQ, MFQ, MQ, MVQ, MPQ), chloroprene rubber (CR), chlorinated polyethylene rubber (CM), chlorosulfonated polyethylene (CSM), alkylated chlorosulfonated polyethylene (ACSM), acrylate rubber (ACM), epichlorohydrin rubber (ECO), polyester urethane rubber (AU), polyether urethane rubber (EU) or ethylene vinyl acetate rubber (EVA).

In einer bevorzugten Ausführungsform handelt es sich bei dem polaren Kautschuk um NBR, insbesondere aufgrund des Preises und der Kraftstoffbeständigkeit. Da die Kraftstoffbeständigkeit unter anderem vom Acrylnitril-Gehalt abhängt und besser ist je höher der ACN-Gehalt ist, wird bevorzugt ein NBR mit einem ACN-Gehalt von größer 28 Gew.-%, bevorzugt von größer 38 Gew.-%, verwendet.In a preferred embodiment, the polar rubber is NBR, in particular because of the price and the fuel resistance. Since the fuel resistance depends, among other things, on the acrylonitrile content and the higher the ACN content, the better it is, an NBR with an ACN content of greater than 28% by weight, preferably greater than 38% by weight, is preferably used.

Bei der Verwendung von NBR zeigt sich der Vorteil der Erfindung am meisten, da insbesondere zwischen NBR und FKM ohne die erfindungsgemäße Haftmischung kein dauerfester Haftverbund ermöglicht wird.The advantage of the invention is most evident when using NBR, since in particular between NBR and FKM no permanent adhesive bond is possible without the adhesive mixture according to the invention.

Die Komplexität im Produktionsmaßstab wird weiter erniedrigt, wenn es sich bei dem Kautschuk in der Haftmischung bevorzugt ebenfalls um einen polaren Kautschuk handelt, vorzugsweise um den gleichen, der auch für die weitere Schicht auf der Basis eines polaren Kautschuks eingesetzt wird.The complexity on a production scale is further reduced if the rubber in the adhesive mixture is preferably also a polar rubber, preferably the same rubber that is also used for the further layer based on a polar rubber.

In einer bevorzugten Ausführungsvariante enthält die Haftmischung wenigstens ein vorkondensiertes Resorcin. Hierdurch werden die Gefahrstoffeinstufung sowie die Reaktivität des einzelnen Resorcin-Moleküls positiv beeinflusst. Der Anteil an freiem Resorcin ist reduziert, wodurch die Systeme gesundheitlich weniger kritisch werden und die Verarbeitbarkeit verbessert wird.In a preferred embodiment variant, the adhesive mixture contains at least one precondensed resorcinol. This has a positive effect on the classification of hazardous substances and the reactivity of the individual resorcinol molecule. The proportion of free resorcinol is reduced, which makes the systems less critical to health and improves processability.

Der flexible Artikel kann in einer bevorzugten Ausführungsform noch wenigstens eine Schicht auf Basis eines Textils als textile Festigkeitsträgerschicht enthalten.In a preferred embodiment, the flexible article can also contain at least one layer based on a textile as a textile reinforcement layer.

Die textile Festigkeitsträgerschicht kann bevorzugt als Filz, Vlies, Gewebe, Geflecht, Gewirk oder Gestrick, Gelege ausgebildet sein. Es ist auch möglich, dass die Festigkeitsträgerschicht aus Komponenten aus Filz, Vlies, Gewebe, Geflecht, Gewirk oder Gestrick, Gelege ausgebildet ist.The textile reinforcement layer can preferably be designed as a felt, fleece, woven fabric, mesh, knitted or knitted fabric, scrim. It is also possible for the reinforcement layer to be formed from components made of felt, fleece, woven, braided, knitted or knitted fabric.

Als Materialien für die textile Festigkeitsträgerschicht können alle der fachkundigen bekannten und geeigneten Materialien verwendet werden, die bevorzugt ausgewählt sind aus der Gruppe, bestehend aus: Polyamid (PA), z.B. PA6, PA6.6, PA11, PA12, PA6.10, PA6.12, und / oder Copolyamide und / oder Polyester (PES) und / oder Rayon und / oder Polyethylenterephthalat (PET) und / oder Polyethylennaphthalat (PEN) und / oder Polybutylenterephthalat (PBT) und / oder Polycarbonat (PC) und / oder ungesättigtes Polyesterharz (UP) und / oder Poly(1,4-cyclohexandimethylenterephthalat) (PCDT) und / oder Baumwolle und / oder Zellwolle und / oder Polyvinylalkohol (PVAL) und / oder Polyoxibenzonaphtoat und / oder Polyvinylacetal (PVA) und / oder Polyetheretherketon (PEEK) und / oder Polyethylen-2,6-naphthalat (PEN) und / oder Polyphenylen und / oder Polyphenylenoxid (PPO) und / oder Polyphenylensulfid (PPS) und / oder Polphenylenether und / oder Polybenzoxazol (PBO) und / oder Polyoxadiazol (POD) und / oder Polyetherimid (PEI) und / oder m-Aramid und / oder p-Aramid und / oder Glas und / oder Basalt und / oder Metall und / oder Carbon und / oder Keramik und / oder Kohlenstoff und / oder Wolle und / oder Baumwolle und / oder Polypropylen und / oder Melamin und / oder modifizierte Viskose und / oder Gestein und / oder hochkristalline Polymerfasern und / oder Fluorpolymere, wie bspw. Fluorsilikon, Polytetrafluorethylen (PTFE) und Perfluorethylenpropylen (FEP), und /oder Fluor-Copolymere, wie bspw. Poly(vinylidenfluorid-co-hexafluorpropylen) (VDF/HFP), Poly(vinylidenfluorid-co-hexafluorpropylen-co-tetrafluorethylen) (TFB), Poly(vinylidenfluorid-co-tetrafluorethylen-co-perfluormethylvinylether) (VDF/TFE/PMVE), Poly(tetrafluorethylen-co-propylen) (TFE/P) und Poly(vinylidenfluorid-co-chlortrifluorethylen) (VDF/CTFE).As materials for the textile reinforcement layer, all of the expertly known and suitable materials can be used, which are preferably selected from the group consisting of: polyamide (PA), for example PA6, PA6.6, PA11, PA12, PA6.10, PA6. 12, and / or copolyamides 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 poly (1,4-cyclohexanedimethylene terephthalate) (PCDT) and / or cotton and / or rayon and / or polyvinyl alcohol (PVAL) and / or polyoxybenzonaphtoate and / or polyvinyl acetal (PVA) and / or polyetheretherketone (PEEK) and / or polyethylene-2,6-naphthalate (PEN) and / or polyphenylene and / or polyphenylene oxide (PPO) and / or polyphenylene sulfide (PPS) and / or polphenylene ether and / or polybenzoxazole (PBO) and / or polyoxadiazole (POD) and / o the polyetherimide (PEI) and / or m-aramid and / or p-aramid and / or glass and / or basalt and / or metal and / or carbon and / or ceramic and / or carbon and / or wool and / or cotton and / or polypropylene and / or melamine and / or modified viscose and / or rock and / or highly crystalline polymer fibers and / or fluoropolymers, such as fluorosilicone, polytetrafluoroethylene (PTFE) and perfluoroethylene propylene (FEP), and / or fluorine copolymers, such as, for example . Poly (vinylidene fluoride-co-hexafluoropropylene) (VDF / HFP), poly (vinylidene fluoride-co-hexafluoropropylene-co-tetrafluoroethylene) (TFB), poly (vinylidene fluoride-co-tetrafluoroethylene-co-perfluoromethyl vinyl ether) (VDF / TFE / PMVE) , Poly (tetrafluoroethylene-co-propylene) (TFE / P) and poly (vinylidene fluoride-co-chlorotrifluoroethylene) (VDF / CTFE).

Die Materialien für die Festigkeitsträgerschicht und die Fasern können hierbei allein oder in Kombination verwendet werden, d.h. es sind insbesondere für die Festigkeitsträgerschicht auch so genannte Hybridsysteme möglich.The materials for the reinforcement layer and the fibers can be used alone or in combination, i.e. so-called hybrid systems are also possible for the reinforcement layer in particular.

Insbesondere für die Anwendung als Kraftstofftank ist die Kombination von Temperatur- und Chemikalienbeständigkeit sowie Festigkeit, Dehnung und Kosten besonders relevant. Daher werden bevorzugt Polyamide und / oder Polyester eingesetzt. Aber auch Aramide können dann zum Einsatz kommen, wenn erhöhte Temperaturbeständigkeit und Festigkeit ausschlaggebend sind.The combination of temperature and chemical resistance as well as strength, elongation and costs is particularly relevant for use as a fuel tank. Polyamides and / or polyesters are therefore preferably used. But aramids can also be used if increased temperature resistance and strength are crucial.

Die üblichen Mischungsingredienzien der Schicht auf der Basis wenigstens eines FKM ebenso wie der Schicht auf der Basis wenigstens eines polaren Kautschuks umfassen wenigstens einen Vernetzer oder ein Vernetzersystem (Vernetzungsmittel und Beschleuniger). Weitere Mischungsingredienzien sind zumeist noch ein Füllstoff und/oder ein Verarbeitungshilfsmittel und/ oder ein Weichmacher und/ oder ein Alterungsschutzmittel, sowie gegebenenfalls weitere Zusatzstoff (z.B. Farbpigmente). Diesbezüglich wird auf den allgemeinen Stand der Kautschukmischungstechnologie verwiesen.The usual mixing ingredients of the layer based on at least one FKM as well as the layer based on at least one polar rubber comprise at least one crosslinker or one crosslinker system (crosslinking agent and accelerator). Further mixing ingredients are usually a filler and / or a processing aid and / or a plasticizer and / or an anti-aging agent, and possibly other additives (e.g. color pigments). In this regard, reference is made to the general state of rubber compound technology.

Bei dem flexiblen Artikel handelt es sich in einer bevorzugten Ausführungsform um einen flexiblen Behälter, insbesondere um einen flexiblen Kraftstoffbehälter.In a preferred embodiment, the flexible article is a flexible container, in particular a flexible fuel container.

Die Erfindung soll nun anhand von Vergleichsbeispielen („V“) und erfindungsgemäßen Ausführungsbeispielen („E“), die in der Tabelle 1 zusammengefasst sind, näher erläutert werden.The invention will now be explained in more detail using comparative examples (“V”) and exemplary embodiments according to the invention (“E”), which are summarized in Table 1.

Hierzu wurden jeweils folgende Prüfkörper hergestellt:

  • Auf eine textile Festigkeitsträgerschicht wurde zunächst wenigstens eine Haftschicht basierend auf NBR-Kautschuk aufgebracht. Auf diese Haftschicht wurde anschließend eine Schicht basierend auf FKM-Kautschuk aufgetragen und nach der Vulkanisation der Trennwiderstand [N/mm] bzw. [N/25mm] gemäß DIN 53530 zwischen der NBR-Schicht und der FKM-Schicht ermittelt.
Tabelle 1 E1 E2 VI Trennkraft [N/mm] 8,9 9,5 0,5 Trennkraft rN/25mml 221.8 236,9 11,5 The following test specimens were produced for this purpose:
  • At least one adhesive layer based on NBR rubber was first applied to a textile reinforcement layer. A layer based on FKM rubber was then applied to this adhesive layer and, after vulcanization, the separation resistance [N / mm] or [N / 25 mm] according to DIN 53530 between the NBR layer and the FKM layer was determined.
Table 1 E1 E2 VI Separation force [N / mm] 8.9 9.5 0.5 Separation force rN / 25mml 221.8 236.9 11.5

  • E1: Haftschicht enthaltend NBR und HMMM und ResorcinE1: Adhesive layer containing NBR and HMMM and resorcinol
  • E2: Haftschicht enthaltend NBR und HMMM und vorkondensiertes ResorcinE2: Adhesive layer containing NBR and HMMM and precondensed resorcinol
  • VI: Haftschicht enthaltend NBR (ohne HMMM und Resorcin bzw vorkondensiertem Resorcin)VI: Adhesive layer containing NBR (without HMMM and resorcinol or precondensed resorcinol)

Claims (6)

Mehrschichtiger flexibler Artikel enthaltend wenigstens eine Schicht auf der Basis wenigstens eines Fluorkautschuks (FKM) und wenigstens eine Schicht auf der Basis wenigstens eines weiteren polaren Kautschuks , dadurch gekennzeichnet, dass eine Schicht auf der Basis wenigstens eines Fluorkautschuks (FKM) und eine Schicht auf der Basis wenigstens eines weiteren polaren Kautschuks über eine Haftmischung einen dauerfesten Haftverbund bilden, wobei die Haftmischung - wenigstens einen Kautschuk und Hexamethoxymethylaminether (HMMM) und wenigstens ein Resorcin (1,3-Dihydroxybenzol) oder - wenigstens einen Kautschuk und Hexamethoxymethylaminether (HMMM) und wenigstens ein vorkondensiertes Resorcin enthält.Multi-layer flexible article containing at least one layer based on at least one fluororubber (FKM) and at least one layer based on at least one further polar rubber, characterized in that a layer based on at least one fluororubber (FKM) and a layer on the basis at least one further polar rubber form a permanent adhesive bond via an adhesive mixture, the adhesive mixture - at least one rubber and hexamethoxymethylamine ether (HMMM) and at least one resorcinol (1,3-dihydroxybenzene) or - at least one rubber and hexamethoxymethylamine ether (HMMM) and at least one precondensed Contains resorcinol. Flexibler Artikel nach Anspruch 1, dadurch gekennzeichnet, dass der weitere polare Kautschuk Nitrilkautschuk (NBR) ist.Flexible article according to Claim 1 , characterized in that the further polar rubber is nitrile rubber (NBR). Flexibler Artikel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das die Haftmischung als Kautschuk Nitrilkautschuk (NBR) enthält.Flexible article according to Claim 1 or 2 , characterized in that the adhesive mixture contains nitrile rubber (NBR) as rubber. Flexibler Artikel nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Haftmischung wenigstens einen Kautschuk und Hexamethoxymethylaminether (HMMM) und ein vorkondensiertes Resorcin enthält.Flexible article according to one of the Claims 1 to 3 , characterized in that the adhesive mixture contains at least one rubber and hexamethoxymethylamine ether (HMMM) and a precondensed resorcinol. Flexibler Artikel nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass er zusätzlich wenigstens eine Schicht auf der Basis eines Textils als textile Festigkeitsträgerschicht enthält.Flexible article according to one of the Claims 1 to 4th , characterized in that it additionally contains at least one layer based on a textile as a textile reinforcement layer. Flexibler Artikel nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass es sich um einen flexiblen Behälter, insbesondere um einen flexiblen Kraftstoffbehälter, handelt.Flexible article according to one of the Claims 1 to 5 , characterized in that it is a flexible container, in particular a flexible fuel container.
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