A silane-grafted polyolefin composition is disclosed, and includes a desired reduced specific weight material. The composition finds application in a wide array of uses, and in particular automotive and uses such as hoses, where this composition is used in place of conventional materials such as TPV and EPDM rubber formulations.

Provided is a hydrogen-dispensing hose. At least two reinforcing layers are coaxially layered between an inner surface layer of a thermoplastic resin having a dry hydrogen gas permeability coefficient at 90 C. of 110.sup.8 cc.Math.cm/cm.sup.2.Math.sec..Math.cmHg or less and an outer surface layer of a thermoplastic resin. A wire braided layer formed by braiding metal wires is used as the outermost reinforcing layer. Fiber braided layers formed by braiding high-strength fibers such as polyparaphenylene benzobisoxazole fibers are used as the other reinforcing layers.

A stitched double layer composite hose and a manufacturing method thereof are provided. The stitched double layer composite hose includes a middle fabric pipe layer (1), an inner surface composite colloid material layer (2) and an outer surface composite colloid material layer (3). The structure of the fabric pipe layer is weft-stitched double-layer unit structure. The double-layer unit structure includes an outer layer, an inner layer and stitched wefts. The inner layer includes inner layer warps and inner layer wefts; the outer layer includes outer layer warps and outer layer wefts. The stitched wefts interweave with the outer layer warps and the inner layer warps for conjoining the inner layer and the outer layer together. The fabric pipe layer weaved according to this invention solves problems of the stitched double layer composite hose in the fabric pipe layer of traditional casing, with such advantages as high flexibility, less weaving point, less loss of yarn strength and less degree of torsion. The fabric pipe layer, with special coating equipment and special coating process, can be directly processed into a stitched double layer composite hose satisfying market needs with large caliber, high dielectric strength and higher flexibility. The production process is simple, featured with extremely high utility value and worthy of promotion for production.

A flexible pipe comprising a tubular layer comprising a polymer that is crosslinked to a greater degree at an outer region of the tubular layer than at an inner region of the tubular layer, wherein the outer region is defined by the outer surface of the tubular layer to a depth of 5% of the total thickness of the tubular layer and the inner region is defined by the inner surface of the tubular layer to a depth of 5% of the total thickness of the tubular layer.

A flexible pipe suitable for transporting fresh water is described. The pipe has a circular cross-section when it is pressurized and which can collapse in on itself. The pipe has an outer diameter of between 1 and 7 meters and a length of between 200 and 3000 meters and includes an envelope which is sealed from the transported liquid, and at least two peripheral reinforcing elements increasing the mechanical resistance of the pipe to a positive differential pressure so that the pipe can support a positive differential pressure of between 1 and at least 1010.sup.5 Pa without bursting or cracking.

A fiber-reinforced composite material having at least one reinforcement layer having one or more woven mats, unwoven mats, or bundle of fibers comprising a plurality of reinforcement fibers that has a binder-resin filling at least a portion of the voids of the reinforcement fibers. In some aspects, the binder-resin adheres to the reinforcement fibers and displaces the air voids at the interface between the reinforcement fibers and the binder-resin. The binder-resin has a relatively low viscosity less than at least about 20,000 centipoise at 176 C. and low molecular weight, which allows the reinforcement layer to maintain a low flex modulus while maintaining or increasing tensile modulus. The fiber-reinforced composite material can be utilized in various articles, such as a flexible fiber reinforced hose adapted for conveying fluids under pressure having at least one polymer layer that bonds to the binder-resin of the reinforcement layer, preferably being cross-linkable or cross-linked to the polymer layer.

A hose can include an inner tube that can form a flow path and an inner fiber layer that can be formed around an outer surface of the inner tube. The hose can further include an intermediate fiber layer that can be formed around the inner fiber layer, and an intermediate fiber layer that can be formed around the inner fiber layer. An outer layer can be formed around the intermediate fiber layer. The inner fiber layer, the intermediate fiber layer, and the outer fiber layer can be formed from support thread applied with greater than about 10 pounds (lbs) of tension. The support thread of the inner fiber layer, the support thread of the intermediate fiber layer, and the support thread of the outer fiber layer can include aramid fibers.

The systems and methods described herein relate to an improved stretchable hose apparatus which enables the transmission of high-throughput signals along several conductors within a conductor cable. In particular, the stretchable hose enables consistent high speed communications and high power transmission between a buoyant object and an optional underwater device in all weather conditions by permitting compression of the conductor cable in a first range of hose extensions and limiting elastic elongation of the conductor cable in a second greater range up to full hose extension.

A hose is provided capable of meeting fireproof requirements per AS1055 under no flow condition. The hose has multiple layers including a yttria-stabilized zirconia (YSZ) flexible ceramic substrate layer disposed between first and second silicone rubber layers.

A fiber-reinforced composite material having at least one reinforcement layer having one or more woven mats, unwoven mats, or bundle of fibers comprising a plurality of reinforcement fibers that has a binder-resin filling at least a portion of the voids of the reinforcement fibers. In some aspects, the binder-resin adheres to the reinforcement fibers and displaces the air voids at the interface between the reinforcement fibers and the binder-resin. The binder-resin has a relatively low viscosity less than at least about 20,000 centipoise at 176 C. and low molecular weight, which allows the reinforcement layer to maintain a low flex modulus while maintaining or increasing tensile modulus. The fiber-reinforced composite material can be utilized in various articles, such as a flexible fiber reinforced hose adapted for conveying fluids under pressure having at least one polymer layer that bonds to the binder-resin of the reinforcement layer, preferably being cross-linkable or cross-linked to the polymer layer.