A rubber hose includes an inner rubber layer, a first braided layer formed on the inner rubber layer by braiding plural first multiple wound yarn materials in a three-over, three-under pattern formed by bundling plural first yarn materials including a dry vinylon, a second braided layer formed on the first braided layer by braiding plural second multiple wound yarn materials formed by bundling plural second yarn materials, and an outer rubber layer formed on the second braided layer. The young modulus of the first yarn material is not less than 17 GPa and not more than 26 GPa, and a breaking elongation of the first yarn material is not less than 5% and not more than 12%, and an adhesive force between the outer rubber layer and the second braided layer is not less than 10 N/cm and not more than 30 N/cm.

Provided are a rubber composition for hoses containing acrylonitrile butadiene rubber, a filler, a resorcin-formaldehyde precondensate, an aldehyde-ammonia vulcanization accelerator, and a fatty acid diester, and a hose including a layer formed using the same.

A rubber composition of the present technology contains: 100 parts by mass of diene polymer that can be vulcanized by sulfur, from 0.5 parts by mass to 5 parts by mass of sulfur, and from 0.8 parts by mass to 17 parts by mass of hydroxy group-containing compound having a molecular weight of 200 or less.

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.

An irrigation pipe is formed from a sheet rolled into a tube about a longitudinal axis, and having overlapped lateral margins. The sheet has a fabric layer and an outer layer formed on the fabric layer. The pipe includes axially extending load bearing members which are in contact with the outer layer. The load bearing members are lacking at least in the vicinity of one or both of the overlapped lateral margins.

A coaxial hose for electrostatic oiling systems that includes a flexible external tube, and a flexible internal tube for the circulation of a second fluid inside thereof. The internal tube together with the external tube form an annular space for the circulation of a first fluid. The internal tube includes an internal layer made of PTFE that is intended to contain the second fluid, internal braiding that is intended to lend the internal tube pressure resistance and an external layer that is made of polyamide material which is intended to prevent the passage of the first fluid through the braiding.

Systems and methods for detecting degradation and failures, include types of failures, in a hose assembly are disclosed. One system includes a hose degradation monitoring circuit having a hose assembly including a hose having first and second conductive layers, and a degradation monitoring circuit configured to detect a resistance of the hose across the conductive layers. The degradation monitoring circuit includes a voltage source electrically connected to the first conductive layer, and a resistor electrically connected between the second conductive layer and ground. The degradation monitoring circuit further includes a voltage monitoring circuit electrically connected between the resistor and the second conductive layer, to periodically monitor a voltage at the location and detect a possible failure of the hose assembly upon determining that, based at least in part on a change in the voltage at the location over time, a resistance of the hose assembly has passed a threshold level.

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 rubber composition of the present technology comprises: from 0.5 parts by mass to 1.5 parts by mass of sulfur, from 0.2 parts by mass to 0.6 parts by mass of a thiuram vulcanization accelerator, from 0.2 parts by mass to 0.6 parts by mass of a guanidine vulcanization accelerator, from 0.15 parts by mass to 0.8 parts by mass of a sulfenamide vulcanization accelerator, and from 0.1 parts by mass to 1.5 parts by mass of a thiourea vulcanization accelerator per 100 parts by mass of a diene polymer containing a chloroprene rubber.