DE102016209005A1 - Multilayer flexible hose - Google Patents

Multilayer flexible hose Download PDF

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Publication number
DE102016209005A1
DE102016209005A1 DE102016209005.4A DE102016209005A DE102016209005A1 DE 102016209005 A1 DE102016209005 A1 DE 102016209005A1 DE 102016209005 A DE102016209005 A DE 102016209005A DE 102016209005 A1 DE102016209005 A1 DE 102016209005A1
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Germany
Prior art keywords
layer
multilayer flexible
flexible hose
brake
hose
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DE102016209005.4A
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German (de)
Inventor
Michael Thum
Erika Witt
Lars Döring
Harald Koch
Frank Jungrichter
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ContiTech Schlauch GmbH
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ContiTech Schlauch GmbH
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Priority to DE102016209005.4A priority Critical patent/DE102016209005A1/en
Priority to EP17707543.9A priority patent/EP3463849A1/en
Priority to PCT/EP2017/054458 priority patent/WO2017202511A1/en
Publication of DE102016209005A1 publication Critical patent/DE102016209005A1/en
Withdrawn legal-status Critical Current

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    • 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
    • B32B25/08—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
    • 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
    • B32B5/022—Non-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
    • 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
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of 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
    • 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
    • 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
    • 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
    • B32B2262/0223—Vinyl resin 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
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/04—Cellulosic plastic fibres, e.g. rayon
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/546—Flexural strength; Flexion stiffness
    • 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
    • B32B2307/732—Dimensional properties
    • 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

Landscapes

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

Abstract

Die Erfindung betrifft einen mehrschichtigen flexiblen Schlauch, insbesondere einen mehrschichtigen flexiblen Bremsschlauch. Um eine gleichmäßige Volumenzunahme über den gesamten Druckbereich von 0 bis 200 bar und über den gesamten Temperaturbereich von –40 °C bis 160°C zu gewährleisten, weist der Schlauch folgenden Schichtenaufbau auf: – eine einlagige oder mehrlagige Außenschicht auf Basis wenigstens eines Elastomers; – eine erste einlagige oder mehrlagige textile Festigkeitsträgerschicht aus Polyvinylalkohol und / oder Rayon; – eine zweite einlagige oder mehrlagige textile Festigkeitsträgerschicht aus Aramid; – eine einlagige oder mehrlagige Innenschicht auf Basis wenigstens eines Elastomers.The invention relates to a multilayer flexible hose, in particular a multilayer flexible brake hose. In order to ensure a uniform volume increase over the entire pressure range of 0 to 200 bar and over the entire temperature range of -40 ° C to 160 ° C, the hose has the following layer structure: a single-layer or multi-layer outer layer based on at least one elastomer; A first single-layer or multi-ply textile reinforcement layer of polyvinyl alcohol and / or rayon; A second single layer or multi-ply textile reinforcement layer of aramid; - A single-layer or multi-layer inner layer based on at least one elastomer.

Description

Die Erfindung betrifft einen mehrschichtigen flexiblen Schlauch, insbesondere einen mehrschichtigen flexiblen Bremsschlauch. The invention relates to a multilayer flexible hose, in particular a multilayer flexible brake hose.

Bremsschläuche werden in Bremsanlagen von Kraftfahrzeugen eingesetzt, um über das Bremspedal eine statische Bremsflüssigkeitssäule zu erzeugen, die den Druck verlustfrei auf die Radbremszylinder weiterleiten soll. Die Weitergabe der aufgewendeten Fußkraft erfolgt in den Bremsschläuchen bzw. Bremsleitungen reibungslos und verlustfrei. Bei der Überbrückung vom Fahrzeugboden zu den Rädern, d.h. den Bremszylindern, sind flexible Übergänge nötig, um einen Ausgleich zwischen Ein- und Ausfedern zu schaffen. Hierzu werden in der Regel flexible Bremsschläuche, die wenigstens eine Schicht auf Kautschukbasis haben, verbaut. Gegenüber starren Bremsleitungen sind sie dehnbar und verändern diese Eigenschaft mit wechselnden Temperaturbedingungen. Die Volumenänderung in den flexiblen Bremsschläuchen wird über den Pedalweg ausgeglichen, was einen sich ständig verändernden Druckpunkt zur Folge hat. Flexible Bremsschläuche und auch starre Bremsleitungen sind bspw. aus DE10108846A1 , DE3513267A1 , DE2522288A1 , DE69905525T2 und DE10244741A1 bereits bekannt. Brake hoses are used in brake systems of motor vehicles to produce via the brake pedal a static brake fluid column, which should forward the loss lossless on the wheel brake cylinder. Passing on the applied foot force takes place smoothly and without loss in the brake hoses or brake lines. When bridging from the floor of the vehicle to the wheels, ie the brake cylinders, flexible transitions are necessary to balance between compression and rebound. For this purpose, flexible brake hoses, which have at least one rubber-based layer, are generally installed. Compared to rigid brake lines they are stretchable and change this property with changing temperature conditions. The volume change in the flexible brake hoses is compensated for via the pedal travel, resulting in an ever-changing pressure point. Flexible brake hoses and rigid brake lines are, for example, from DE10108846A1 . DE3513267A1 . DE2522288A1 . DE69905525T2 and DE10244741A1 already known.

Problematisch bei flexiblen Bremsschläuchen ist es, dass sich die Volumenerhöhung bei diesen Schläuchen negativ auf den Druckpunkt ausübt. Des Weiteren diffundiert Luftfeuchtigkeit durch überalterte Bremsschläuche, was zu einer Verbindung mit der hygroskopischen Bremsflüssigkeit führt. Die daraus resultierende Dampfblasenbildung bei heißen Bremsen verändert den Druckpunkt und führt zu einem langen Pedalweg, was im Grenzfall zum Ausfall der Bremsanlage führen kann, wenn kein Druckpunkt mehr aufgebaut wird. The problem with flexible brake hoses is that the volume increase in these hoses has a negative effect on the pressure point. Furthermore, humidity diffuses through over-aged brake hoses, which leads to a connection with the hygroscopic brake fluid. The resulting vapor bubble formation in hot brakes changes the pressure point and leads to a long pedal travel, which in the limit case can lead to failure of the brake system when no pressure point is built more.

Zukünftig werden insbesondere für das autonome Fahren Bremssysteme benötigt, die ein Bremssystem benötigen, bei dem der Bremsschlauch deutlich sensitiver auf das Verhältnis zwischen Druck, Temperatur und Volumen reagiert. Derzeit besitzen herkömmliche Bremsschläuche im unteren Druckbereich eine andere Volumenzunahme als im höheren Druckbereich. Dies gilt auch bei verschiedenen Temperaturbereichen. In the future, especially for autonomous driving brake systems are needed, which require a brake system in which the brake hose reacts much more sensitive to the relationship between pressure, temperature and volume. Currently, conventional brake hoses in the lower pressure range have a different volume increase than in the higher pressure range. This also applies to different temperature ranges.

Die Aufgabe der vorliegenden Erfindung besteht somit darin, einen mehrschichtigen flexiblen Schlauch, insbesondere einen mehrschichtigen flexiblen Bremsschlauch, bereitzustellen, der sich durch eine gleichmäßige Volumenzunahme über den gesamten Druckbereich von 0 bis 200 bar und über den gesamten Temperaturbereich von –40 °C bis 160°C auszeichnet. The object of the present invention is therefore to provide a multilayer flexible hose, in particular a multilayer flexible brake hose, which is characterized by a uniform volume increase over the entire pressure range from 0 to 200 bar and over the entire temperature range from -40 ° C to 160 ° C distinguishes.

Gelöst wird diese Aufgabe dadurch, dass der mehrschichtige flexible Schlauch wenigstens folgenden Schichtenaufbau aufweist:

  • – eine einlagige oder mehrlagige Außenschicht auf Basis wenigstens eines Elastomers;
  • – eine erste einlagige oder mehrlagige textile Festigkeitsträgerschicht aus Polyvinylalkohol und / oder Rayon;
  • – eine zweite einlagige oder mehrlagige textile Festigkeitsträgerschicht aus Aramid;
  • – eine einlagige oder mehrlagige Innenschicht auf Basis wenigstens eines Elastomers.
This object is achieved in that the multilayer flexible hose has at least the following layer structure:
  • - A single-layer or multi-layer outer layer based on at least one elastomer;
  • A first single-layer or multi-ply textile reinforcement layer of polyvinyl alcohol and / or rayon;
  • A second single layer or multi-ply textile reinforcement layer of aramid;
  • - A single-layer or multi-layer inner layer based on at least one elastomer.

Überraschenderweise hat sich gezeigt, dass durch einen derartigen Schlauchaufbau ein geringerer Pedalweg ermöglicht wird und somit die Bremse besser angesprochen werden kann. Als Folge kann das Volumen der Bremsflüssigkeit im Fahrzeug reduziert werden. Gleichzeitig kann der Schlauch in einem größeren Temperaturbereich eingesetzt werden, wodurch ggf. zusätzliche Bauteile im Fahrzeug zur Kühlung entfallen können. Surprisingly, it has been shown that a shorter pedal travel is made possible by such a hose construction and thus the brake can be better addressed. As a result, the volume of brake fluid in the vehicle can be reduced. At the same time the hose can be used in a wider temperature range, which may possibly account for additional components in the vehicle for cooling.

Die Außenschicht und die Innenschicht können hinsichtlich ihrer quantitativen und / oder qualitativen Zusammensetzung gleich oder verschieden voneinander sein. Zur Erzielung der höchst möglichen Flexibilität sind beide Schichten auf der Basis wenigstens eines Elastomers und weiterer Mischungsingredienzien aufgebaut. Bei dem Elastomer kann es sich um Kautschuke und / oder um thermoplastische Elastomere handeln, die alleine oder in Kombination verwendet werden können. Als Kautschukkomponenten sind insbesondere zu nennen: Ethylen-Propylen-Mischpolymerisat (EPM), Ethylen-Propylen-Dien-Mischpolymerisat (EPDM), Nitrilkautschuk (NBR), (teil)hydrierter Nitrilkautschuk (HNBR), Fluor-Kautschuk (FPM bzw. FKM), Chloropren-Kautschuk (CR), Naturkautschuk (NR), Styrol-Butadien-Kautschuk (SBR), Isopren-Kautschuk (IR), Butylkautschuk (IIR), Brombutylkautschuk (BIIR), Chlorbutylkautschuk (CIIR), Butadien-Kautschuk (BR), Chloriertes Polyethylen (CM), Chlorsulfoniertes Polyethylen (CSM), Polyepichlorhydrin (ECO), Ethylen-Vinylacetat-Kautschuk (EVA), Acrylat-Kautschuk (ACM), Siliconkautschuk (MVQ), Fluorierter Methylsilikonkautschuk (MFQ), Perfluorkautschuk (FFPM oder FFKM), Polyurethan (PU). Von besonderer Bedeutung sind EPM bzw. EPDM, da diese eine besonders gute Beständigkeit gegenüber der Bremsflüssigkeit besitzen. The outer layer and the inner layer may be the same or different with respect to their quantitative and / or qualitative composition. To achieve maximum flexibility, both layers are based on at least one elastomer and other blend ingredients. The elastomer may be rubbers and / or thermoplastic elastomers which may be used alone or in combination. Particularly suitable rubber components are: ethylene-propylene copolymer (EPM), ethylene-propylene-diene copolymer (EPDM), nitrile rubber (NBR), (partially) hydrogenated nitrile rubber (HNBR), fluorine rubber (FPM or FKM) , Chloroprene rubber (CR), natural rubber (NR), styrene-butadiene rubber (SBR), isoprene rubber (IR), butyl rubber (IIR), bromobutyl rubber (BIIR), chlorobutyl rubber (CIIR), butadiene rubber (BR) , Chlorinated Polyethylene (CM), Chlorosulfonated Polyethylene (CSM), Polyepichlorohydrin (ECO), Ethylene Vinyl Acetate Rubber (EVA), Acrylate Rubber (ACM), Silicone Rubber (MVQ), Fluorinated Methylsilicone Rubber (MFQ), Perfluororubber (FFPM or FFKM ), Polyurethane (PU). Of particular importance are EPM or EPDM, since they have a particularly good resistance to the brake fluid.

Die Mischungsingredienzien 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 Zusatzstoffe (z.B. Fasern, Farbpigmente). Auch hier wird diesbezüglich auf den allgemeinen Stand der Kautschukmischungstechnologie verwiesen. The compounding ingredients comprise at least one crosslinker or crosslinker system (crosslinker and accelerator). Other mixing ingredients are usually still a filler and / or a processing aid and / or a plasticizer and / or an aging inhibitor and optionally further additives (eg fibers, color pigments). Here too will In this regard, reference is made to the general state of rubber mixing technology.

Erfindungswesentlich ist es, dass der Schlauch eine erste einlagige oder mehrlagige textile Festigkeitsträgerschicht aus Polyvinylalkohol und / oder Rayon und eine zweite einlagige oder mehrlagige textile Festigkeitsträgerschicht aus Aramid enthält. Diese Kombinationen ermöglichen erst die gleichmäßige Volumenzunahme über den gesamten Druck- und Temperaturbereich, wobei insbesondere die Festigkeitsträgerschicht aus Aramid die verbesserte Temperaturbeständigkeit ermöglicht. Als Aramid können hierbei m-Aramid und p-Aramid alleine oder in Kombination verwendet werden. Bevorzugt ist die Verwendung von p-Aramid, da p-Aramid sich hinsichtlich der Volumenzunahme als stabiler erweist. Als Rayon, häufig auch Reyon geschrieben, werden seidig glänzende Chemiefasern aus regenerierter Cellulose oder aus Celluloseestern bezeichnet. Für die vorliegende Erfindung sind alle der fachkundigen Person bekannten Rayonfasern verwendbar. Rayon und Polyvinylakohol können hierbei jeweils alleine oder in Kombination, z. Bsp. als Hybridgewebe oder Hybridgestrick oder Hybridgeflecht, eingesetzt werden. It is essential to the invention that the tube contains a first single-layer or multi-ply textile reinforcement layer of polyvinyl alcohol and / or rayon and a second single-layer or multi-layer textile reinforcement layer of aramid. These combinations allow only the uniform volume increase over the entire pressure and temperature range, in particular, the strength support layer of aramid allows the improved temperature resistance. As the aramid, m-aramid and p-aramid can be used alone or in combination. Preference is given to the use of p-aramid, since p-aramid proves to be more stable in terms of volume increase. Rayon, often also called Reyon, refers to silky shiny chemical fibers made of regenerated cellulose or cellulose esters. All of the rayon fibers known to the person skilled in the art can be used for the present invention. Rayon and polyvinyl alcohol can each be used alone or in combination, for. For example, as a hybrid fabric or hybrid knit or Hybridgeflecht used.

Die Festigkeitsträgerschichten liegen jeweils zumeist als einlagige oder mehrlagige Festigkeitsträgerschicht vor und können als Filz, Vlies, Gewebe, Geflecht, Gewirk oder Gestrick, Gelege ausgebildet sein. Es ist auch möglich, dass die Festigkeitsträgerschichten jeweils aus Komponenten aus Filz, Vlies, Gewebe, Geflecht, Gewirk oder Gestrick, Gelege ausgebildet ist. Die Festigkeitsträgerschichten können durch Flechten, spiralförmiges Wickeln, Stricken, Wirken oder schraubenförmiges Wirken von Garn oder durch Gewebeeinlagen gebildet werden. In einer besonders bevorzugten Ausführungsform liegt die erste einlagige oder mehrlagige textile Festigkeitsträgerschicht aus Polyvinylalkohol und / oder Rayon in Form eines einlagigen Geflechts vor. Das Geflecht wird hierbei bevorzugt aus 16 bis 25 Spulen gebildet. Der dtex-Wert liegt bevorzugt zwischen 1000 und 2000 dtex, besonders bevorzugt zwischen 1200 und 1500 dtex, mit Drehungszahlen zwischen 30 und 200. In einer besonders bevorzugten Ausführungsform liegt die zweite einlagige oder mehrlagige textile Festigkeitsträgerschicht aus Aramid in Form eines einlagigen Geflechts vor. Das Geflecht wird hierbei bevorzugt aus 16 bis 25 Spulen gebildet. Der dtex-Wert liegt bevorzugt zwischen 1000 und 1700 dtex, besonders bevorzugt zwischen 1000 und 1200 dtex, mit Drehungszahlen zwischen 30 und 200. Die dtex-Werte der ersten und zweiten Festigkeitsträgerschicht sind bevorzugt verschieden voneinander. The reinforcement layers are each usually in the form of a single-layer or multi-layer reinforcement layer and may be in the form of felt, nonwoven, woven, braided, knitted or knitted fabric, scrim. It is also possible that the reinforcing layers are each formed of components of felt, fleece, fabric, braid, knitted or knitted fabric, scrim. The reinforcing layers may be formed by braiding, spirally winding, knitting, knitting or helically knitting yarn or by fabric inserts. In a particularly preferred embodiment, the first single-layer or multi-ply textile reinforcement layer of polyvinyl alcohol and / or rayon is in the form of a single-ply braid. The braid is preferably formed from 16 to 25 coils. The dtex value is preferably between 1000 and 2000 dtex, particularly preferably between 1200 and 1500 dtex, with rotation numbers between 30 and 200. In a particularly preferred embodiment, the second single-layer or multi-ply textile reinforcement layer of aramid is in the form of a single-ply braid. The braid is preferably formed from 16 to 25 coils. The dtex value is preferably between 1000 and 1700 dtex, particularly preferably between 1000 and 1200 dtex, with rotation numbers between 30 and 200. The dtex values of the first and second reinforcement layer are preferably different from one another.

Vorteilhaft ist es, wenn die einzelnen Schichten des Schlauches einen Haftverbund bilden. Hierzu kann gegebenenfalls auch auf chemische Hilfsmittel, wie bspw. der Einsatz eines Haftvermittlers oder eines Ätzmittels zum Anätzen, oder auch physikalische Möglichkeiten, wie bspw. Strahlenbehandlung, etc. zurückgegriffen werden. Als Haftvermittler können beispielsweise Kautschuklösungen, insbesondere auf der Basis der bereits für die Innenschicht bzw. Außenschicht genannten Kautschuke dienen. Diese Haftvermittler werden bevorzugt direkt auf die jeweilige Festigkeitsträgerschicht aufgebracht. Der Schlauch kann desweiteren zusätzlich noch wenigstens eine weitere Zwischenschicht, bevorzugt auf der Basis wenigstens eines Kautschuks enthalten. It is advantageous if the individual layers of the hose form an adhesive bond. For this purpose, it is also possible to make use of chemical auxiliaries, such as, for example, the use of an adhesion promoter or an etchant for etching, or also physical possibilities, such as, for example, radiation treatment, etc. Adhesion promoters can be, for example, rubber solutions, in particular based on the rubbers already mentioned for the inner layer or outer layer. These adhesion promoters are preferably applied directly to the respective reinforcement layer. The hose can furthermore additionally contain at least one further intermediate layer, preferably based on at least one rubber.

Die Erfindung wird nun anhand eines Ausführungsbeispiels unter Bezugnahme auf eine schematische Zeichnung erläutert. The invention will now be explained with reference to an embodiment with reference to a schematic drawing.

1 zeigt einen schematischen erfindungsgemäßen Schlauchaufbau, bei dem sich zwischen der ersten und zweiten Festigkeitsträgerschicht noch eine zusätzliche Zwischenschicht befindet 1 shows a schematic hose assembly according to the invention, in which there is an additional intermediate layer between the first and second reinforcement layer

BezugszeichenlisteLIST OF REFERENCE NUMBERS

01 01
Innenschicht inner layer
02 02
Zwischenschicht interlayer
03 03
zweite textile Festigkeitsträgerschicht aus Aramid second textile reinforcement layer of aramid
04 04
Außenschicht outer layer
05 05
erste textile Festigkeitsträgerschicht aus Polyvinylalkohol und / oder Rayon first textile reinforcement layer of polyvinyl alcohol and / or rayon

ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • DE 10108846 A1 [0002] DE 10108846 A1 [0002]
  • DE 3513267 A1 [0002] DE 3513267 A1 [0002]
  • DE 2522288 A1 [0002] DE 2522288 A1 [0002]
  • DE 69905525 T2 [0002] DE 69905525 T2 [0002]
  • DE 10244741 A1 [0002] DE 10244741 A1 [0002]

Claims (5)

Mehrschichtiger flexibler Schlauch, dadurch gekennzeichnet, dass er wenigstens folgenden Schichtenaufbau aufweist: – eine einlagige oder mehrlagige Außenschicht auf Basis wenigstens eines Elastomers; – eine erste einlagige oder mehrlagige textile Festigkeitsträgerschicht aus Polyvinylalkohol und / oder Rayon; – eine zweite einlagige oder mehrlagige textile Festigkeitsträgerschicht aus Aramid; – eine einlagige oder mehrlagige Innenschicht auf Basis wenigstens eines Elastomers. Multilayer flexible hose, characterized in that it has at least the following layer structure: a single-layer or multi-layer outer layer based on at least one elastomer; A first single-layer or multi-ply textile reinforcement layer of polyvinyl alcohol and / or rayon; A second single layer or multi-ply textile reinforcement layer of aramid; - A single-layer or multi-layer inner layer based on at least one elastomer. Mehrschichtiger flexibler Schlauch nach Anspruch 1, dadurch gekennzeichnet, dass die Außenschicht auf Basis wenigstens eines EPM- oder EPDM-Kautschuks ist. Multilayer flexible hose according to claim 1, characterized in that the outer layer is based on at least one EPM or EPDM rubber. Mehrschichtiger flexibler Schlauch nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Innenschicht auf Basis wenigstens eines EPM- oder EPDM-Kautschuks ist. Multilayer flexible hose according to claim 1 or 2, characterized in that the inner layer is based on at least one EPM or EPDM rubber. Mehrschichtiger flexibler Schlauch nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die zweite einlagige oder mehrlagige textile Festigkeitsträgerschicht aus p-Aramid besteht. Multilayer flexible hose according to one of claims 1 to 3, characterized in that the second single-layer or multi-ply textile reinforcement layer consists of p-aramid. Mehrschichtiger flexibler Schlauch nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass er ein Bremsschlauch ist. Multilayer flexible hose according to one of claims 1 to 4, characterized in that it is a brake hose.
DE102016209005.4A 2016-05-24 2016-05-24 Multilayer flexible hose Withdrawn DE102016209005A1 (en)

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DE102016209005.4A DE102016209005A1 (en) 2016-05-24 2016-05-24 Multilayer flexible hose
EP17707543.9A EP3463849A1 (en) 2016-05-24 2017-02-27 Multi-layer flexible hose
PCT/EP2017/054458 WO2017202511A1 (en) 2016-05-24 2017-02-27 Multi-layer flexible hose

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