Abstract:
A steel strip laminate pipe having increased lap shear strength and peel off strength between the steel layers (44, 48, 52) in the pipe and a method for making such a steel strip pipe are provided. Steel strips (44, 48, 52) coated with a sol-gel or a silane adhesion promoter are wound over an inner lining (40) to form steel layers bonded to each other in a steel strip laminate pipe. In an alternate embodiment, fiber fillers (46, 50) and resin are used to bond the steel layers in the pipe together. In a further embodiment, glass sphere and resin are used to bond the steel layers together. The steel strips bonded together using continuous reinforced fiber filler or glass spheres may be coated with sol-gel or silane. In an alternate embodiment, the sol-gel or silane may also be mixed in the resin used to bond the steel layers together.
Abstract:
Ein Mehrschichtverbund, der folgende Schichten enthält: I. Eine innere Schicht (I), ausgewählt aus einer Fluorpolymer-Formmasse und einer Polyolefin-Formmasse; II. eine Haftvermittlerschicht (II), die folgende Zusammensetzung aufweist: a) 0 bis 80 Gew.-Teile eines Polyamin-Polyamid-Pfropfcopolymers, b) 0 bis 100 Gew.-Teile Polyamid, c) 0 bis 85 Gew.-Teile eines Polymeren, ausgewählt aus Fluorpolymeren und Polyolefinen, wobei die Summe der Gew.-Teile von a), b) und c) 100 ergibt und wobei zusätzlich in der Summe der Komponenten a) und b) mindestens 20 Gew.-Teile aus Monomereinheiten bestehen, die sich von Caprolactam und/oder der Kombination Hexamethylendiamin/Adipinsäure, Hexamethylendiamin/Korksäure, Hexamethylendiamin/Sebacinsäure, Hexamethylendiamin/Dodecandisäure, Hexamethylendiamin/Isophthalsäure oder Hexamethylendiamin/Terephthalsäure herleiten; d) maximal 50 Gew.-Teile Zusatzstoffe, ausgewählt aus schlagzähmachendem Kautschuk und/oder üblichen Hilfs- bzw. Zuschlagstoffen; III. eine Schicht (III) aus einer EVOH-Formmasse, weist eine verbesserte Schichtenhaftung auf.
Abstract:
The invention relates to a multi-layer plastic tube, comprising a base tube (16), a barrier layer (20) coating the base tube, said barrier layer being impenetrable to oxygen, and a protective layer (22) applied on top of the barrier layer, for protecting said barrier layer from damage. This protective layer consists of a material containing a lubricant.
Abstract:
Thermoplastic multilayer composite, particularly in the form of a multilayer hose, a multilayer pipe or a multilayer container, containing at least one intermediate layer made of a molding compound on the basis of ethylene/vinyl alcohol copolymes between layers made of molding compounds on the basis of polyamide, the intermediate layer being bonded via at least one adhesion-promoting layer made of a molding compound on the basis of polyamide selected from the group of copolyamide 6/12, block copolyamide 6/12, polyamide 612, polyamide 610, a mixture of polyamide 6 and polyamide 12 with compatibilizer, a mixture of polyamide 6 and polyamide 11 with compatibilizer, with at least one neighboring layer made of a molding compound on the basis of polyamide 12, polyamide 11, polyamide 1010, polyamide 1012, or polyamide 1212.
Abstract:
A refrigerant conveying hose which is formed of synthetic resin as a whole, and comprises an inner tube serving as an inner layer, and an outer tube including an intermediate layer provided on an outer peripheral surface of the inner tube, a fiber reinforced layer provided on an outer peripheral surface of the intermediate layer and an outer cover layer. The inner tube is formed by using either of (1) a thermoplastic resin, which is an alloy of polyamide resin and an olefin based elastomer, (2) a thermoplastic resin, which is an alloy of a copolymer of polyamide resin and an olefin based elastomer, (3) a thermoplastic resin, which is an alloy of polyamide resin and an urethane based elastomer, and (4) a thermoplastic resin, which is an alloy of a copolymer of polyamide resin and an urethane based elastomer. The intermediate layer is formed by using a thermoplastic resin, which is an alloy of polypropylene (PP) and isobutylene-isoprene rubber (IIR), an adhesive for bonding of the inner tube and the intermediate layer uses a special resin based adhesive, and the outer tube is formed by using a thermoplastic resin, which is an alloy of polypropylene (PP) and ethylene propylene diene rubber (EPDM).
Abstract:
A hose with a securing layer, which is used with its ends connected to inserts of a cylindrical member (4) and comprises a resin hose body (2) composed of one or more than one resin layers and a securing layer or layers (3), of which a main component is rubber or resin coated on at least an inner surface or surfaces of one or both ends of the resin hose body (2), and a connecting structure therefor.
Abstract:
The invention relates to a tube for transporting a fluid for an automobile, especially a coolant, comprising the following: an inner layer (1) consisting of a vulcanised elastomer material; an outer layer (2) consisting of a chemically resistant thermoplastic material which is highly impermeable to the liquid coolant; and an intermediate layer (3) consisting of a bonding agent and a material that is compatible with those of the inner and outer layers.
Abstract:
An elongated multi-layer tubing for connection to a motor vehicle system to handle fluids containing hydrocarbons. The tubing comprises an inner layer disposed radially innermost and having an inner surface capable of prolonged exposure to a fluid containing hydrocarbons, the inner layer formed from an extrudable, melt-processible thermoplastic, such as Nylon 12. An outer jacket layer is formed from an extrudable, melt-processible thermoplastic, such as thermoplastic elastomer (TPE). The tubing further comprises an anhydride-modified, linear low-density polyethylene intermediate layer extruded between the inner and outer layers, the intermediate layer sufficiently adhering the inner layer to the outer jacket to substantially prevent slipping therebetween. At least one layer of the tubing is capable of dissipating electrostatic energy in a range of 10 to 10 Ohm/cm .
Abstract:
A steel strip laminate pipe having increased lap shear strength and peel off strength between the steel layers in the pipe and a method for making such a steel strip pipe are provided. Steel strips coated with a sol-gel or a silane adhesion promoter are wound over an inner lining to form steel layers bonded to each other in a steel strip laminate pipe. In an alternate embodiment, fiber fillers and resin are used to bond the steel layers in the pipe together. In further embodiment, glass sphere and resin are used to bond the steel layers together. The steel strips bonded together using continuous reinforced fiber filler or glass spheres may be coated with sol-gel or silane. In an alternate embodiment, the sol-gel or silane may also be mixed in the resin used to bond the steel layers together.
Abstract:
A multi-layer tubing assembly for use in fuel-line applications. An extruded innermost semi-conductive layer of a fluoroplastic has a surface resistivity in the range of 10 to 10 ohm/sq. An inner permeation-resistant layer of a fluoroplastic is coextruded around the innermost layer at temperatures below 600 degrees Fahrenheit. An adhesive layer of polymer blend coextruded around the inner layer has a multiphase morphology wherein one phase is miscible with the fluoroplastic and another phase is miscible with a rubber-like multiphase polymer. A cover layer of the rubber-like multiphase polymer is coextruded around the adhesive layer.