摘要:
A hose comprising a laminate including a rubber layer comprising a rubber composition containing as essential components (A) a rubber made of at least one material selected from the group consisting of an ethylene-propylene-diene terpolymer and an ethylene-propylene copolymer, (B) a vulcanizing agent containing a peroxide, (C) a resorcinol compound, and (D) a melamine resin; and a layer made of at least one material selected from the group consisting of a polyamide resin, an ethylene-vinyl alcohol copolymer, and a metal. In such hose, the rubber layer and the non-rubber layer made of the polyamide resin, the ethylene-vinyl alcohol copolymer, or of the metal adhere well to each other, without applying an adhesive to an interface therebetween.
摘要:
A hose of a laminated structure which comprises a rubber layer composed of a rubber composition, and a laminate including a metal foil and a resin, the rubber composition including: (A) a rubber including at least one of an ethylene-propylene-diene terpolymer and an ethylene-propylene copolymer; (B) a peroxide vulcanizing agent; (C) a resorcinol compound; and (D) a melamine resin. The hose is light in weight, less costly, and has excellent gas barrier properties.
摘要:
A hose of impermeability has a wall corrugated along at least a part of its length, and formed by an inner thin resin layer, a laminated layer including a metal film, or a layer formed by a metal film, and an outer thin resin layer. It has a very high fluid impermeability owing to its wall layer including or formed by a metal film, and is also very flexible, capable of absorbing vibration, light in weight and strong. A tubular inner thin resin layer is formed by extrusion as the innermost layer of a multi-layered hose wall, and a laminated tape including a metal film, or simply a metal film is spirally wound or longitudinally lapped about the inner resin layer. An outer thin resin layer is formed about a layer formed by the laminated tape, or metal film, and the whole is at least partly corrugated. Alternatively, corrugation is done before an outer thin resin layer is formed by electrostatic powder coating. A different process includes applying a laminated tape including a metal film about a mandrel to form a tubular laminated layer, and after removing the mandrel, coating the inner surface of the tubular layer with a resin powder electrostatically to form a thin resin layer thereon.
摘要:
A hose of impermeability has a wall corrugated along at least a part of its length, and formed by an inner thin resin layer, a laminated layer including a metal film, or a layer formed by a metal film, and an outer thin resin layer. It has a very high fluid impermeability owing to its wall layer including or formed by a metal film, and is also very flexible, capable of absorbing vibration, light in weight and strong. A tubular inner thin resin layer is formed by extrusion as the innermost layer of a multi-layered hose wall, and a laminated tape including a metal film, or simply a metal film is spirally wound or longitudinally lapped about the inner resin layer.An outer thin resin layer is formed about a layer formed by the laminated tape, or metal film, and the whole is at least partly corrugated. Alternatively, corrugation is done before an outer thin resin layer is formed by electrostatic powder coating. A different process includes applying a laminated tape including a metal film about a mandrel to form a tubular laminated layer, and after removing the mandrel, coating the inner surface of the tubular layer with a resin powder electrostatically to form a thin resin layer thereon.
摘要:
A hydrogen fuel hose having a wall composed of an inner resin layer, a thin metal layer and an outer resin layer. The inner resin layer includes at least a layer of low gas permeability and may further include a layer of low water permeability surrounded by the layer of low gas permeability. The hose may have a corrugated wall portion. The hose is suited for use as a hydrogen fuel hose for a fuel-cell vehicle because of its excellent hydrogen gas impermeability, resistance to embrittlement by hydrogen and hose flexibility.
摘要:
A composite hose with a corrugated metal tube has a corrugated metal tube as a barrier layer against permeation of conveyed fluid, an elastic filler that penetrates in each valley gap on an outer peripheral side of the corrugated metal tube, between corrugation hills of the corrugated metal tube, and a reinforcing layer on an outer peripheral side of the elastic filler. The elastic filler to be adapted has a storage modulus in a range of 5×108 MPa to 5×109 MPa under temperature conditions ranging from −30° C. to 150° C.
摘要:
A metal-composite hose having a wall including an innermost metal layer and a resin layer surrounding it, in which the metal layer has at each end portion of the hose an inner surface covered with a resin layer, an elastic rubber layer, or both. A process for manufacturing a metal-composite hose includes: forming a metal layer; covering the metal layer with an elastic rubber layer, if required; and after masking a specific portion of the metal layer, forming a thermoplastic resin layer thereon by powder or spray coating. The hose is preferably a corrugated one. It has high fluid impermeability, flexibility and strength, as well as high metal-rust resistance and sealing property at both ends.
摘要:
A metal-composite corrugated hose having a wall including a metal layer forming its innermost layer and a resin layer surrounding it. Its wall has in its corrugated portion a metal layer thickness (A) of at least 20 &mgr;m, but below 200 &mgr;m, and a resin layer thickness (B) of 80 to 5,000 &mgr;m. Each thickness of A and B has a ratio (A:B) of 1:4 to 1:50. The hose is made by a specific process in which the metal and resin layers are not corrugated simultaneously. Thus, there is a provided a metal-composite corrugated hose having high fuel impermeability, flexibility and strength, and having a reinforcing effect sufficient to protect the metal layer from any fatigue failure.
摘要:
A composite hose is constructed to have an outer peripheral portion and an inner peripheral portion. The outer peripheral portion includes an elastic layer and a reinforcing layer provided on an outer periphery of the elastic layer. The inner peripheral portion includes a corrugated metal tube which is provided with a corrugated portion formed with corrugation hills and corrugation valleys. A distance between the reinforcing layer and tops of the corrugation hills of the corrugated metal tube is designed 0.27 mm or less.
摘要:
A composite hose is constructed to have an outer peripheral portion and an inner peripheral portion. The outer peripheral portion includes an elastic layer and a reinforcing layer provided on an outer periphery of the elastic layer. The inner peripheral portion includes a corrugated metal tube which is provided with a corrugated portion formed with corrugation hills and corrugation valleys. A distance between the reinforcing layer and tops of the corrugation hills of the corrugated metal tube is designed 0.27 mm or less.