Patent classifications
H01B3/308
ELECTRONIC WIRE AND CABLE
An electronic wire and a cable which are excellent in bending resistance even when a diameter is small. The electronic wire has a conductor and a resin insulating layer coated on the conductor. The conductor is a double twisted wire in which twisted wires formed by twisting a plurality of wires are twisted, a diameter of the wire is 0.05 mm or more and 0.2 mm or less, a cross-sectional area of the conductor is 1.0 mm.sup.2 or more and 3.0 mm.sup.2 or less, a breaking elongation of the conductor is 10% or more and 17% or less, a tensile strength of the conductor is 200 MPa or more and 400 MPa or less, and the insulating layer is disposed to be in close contact with the conductor and has a solid structure.
INSULATED WIRE, CABLE AND MOLDED ARTICLE
A method for producing a molding article includes preparing an insulated wire including an outermost layer disposed on an outer periphery of a conductor, the outermost layer including a resin composition including a fluorine-containing elastomer. The resin composition includes a tetrafluoroethylene-propylene copolymer and an ethylene-tetrafluoroethylene copolymer as an entire base polymer or a portion of the base polymer at a mass ratio of the tetrafluoroethylene-propylene copolymer to the ethylene-tetrafluoroethylene copolymer in a range of 100:0 to 60:40. The resin composition further includes 5 to 60 parts by mass of calcium carbonate and/or silica as an inorganic filler with respect to 100 parts by mass of the base polymer.
Insulation materials comprising fibers having a partially cured polymer coating thereon, structures including such insulation materials, and methods of insulating such structures
Insulation materials have a coating of a partially cured polymer on a plurality of fibers, and the plurality of coated fibers in a cross-linked polymeric matrix. Insulation may be formed by applying a preceramic polymer to a plurality of fibers, heating the preceramic polymer to form a partially cured polymer over at least portions of the plurality of fibers, disposing the plurality of fibers in a polymeric material, and curing the polymeric material. A rocket motor may be formed by disposing a plurality of coated fibers in an insulation precursor, curing the insulation precursor to form an insulation material without sintering the partially cured polymer, and providing an energetic material over the polymeric material. An article includes an insulation material over at least one surface.
Multilayer insulated wire and multilayer insulated cable
A multilayer insulated wire includes a conductor, an inner insulation layer, and an outer insulation layer. A gel fraction of the inner insulation layer defined below is not less than 80%. A gel fraction of the outer insulation layer defined below is less than the gel fraction of the inner insulation layer and not less than 75%. An insulation covering layer including the inner and outer insulation layers is cross-linked and has a tensile modulus of not less than 500 MPa in a tensile test conducted at a tensile rate of 200 mm/min. Gel fraction (%)=(mass of inner or outer insulation layer after being immersed in xylene at 110 C. for 24 hours, then left at 20 C. and atmospheric pressure for 3 hours and vacuum-dried at 80 C. for 4 hours/mass of inner or outer insulation layer before immersion in xylene)100
RESIN COMPOSITION, INSULATED ELECTRIC WIRE AND METHOD OF MANUFACTURING INSULATED ELECTRIC WIRE
An insulated electric wire includes a conductor and an insulating layer coated in periphery of the conductor. The insulating layer is made of a resin composition containing a base polymer and a flame retardant. The flame retardant is made of silane-treated aluminum hydroxide, aluminum hydroxide treated with a treatment agent other than a silane coupling agent and/or untreated aluminum hydroxide. The base polymer contains a polymer having a polar group. The resin composition contains the flame retardant, a content of which is more than 40 parts by mass and equal to or less than 80 parts by mass per 100 parts by mass of the base polymer. The resin composition contains the silane-treated aluminum hydroxide, a content of which is equal to or more than 10 parts by mass and equal to or less than 70 parts by mass per 100 parts by mass of the flame retardant.
Wiring member
An object of the present disclosure is to provide a technique with which it is possible to prevent the occurrence of a cable becoming uncovered. A wiring member includes wires, and a resin molded portion. The resin molded portion includes a first protective portion configured to cover an intermediate portion of the wires, and a second protective portion that is formed thinner than the first protective portion and is configured to be continuous with and cover a lending end side of the wires and relative to first protective portion. For example, the wiring member further includes an outer covering member that covers the second protective portion and the wires that extend from the second protective portion.
INSULATED ELECTRIC WIRE
An insulated electric wire includes a linear conductor and an insulating film disposed to surround the periphery of the conductor. The insulating film includes a polyimide layer formed of a polyimide that has a molecular structure including a PMDA-ODA-type repeating unit A and a BPDA-ODA-type repeating unit B, the mole fraction [B100/(A+B)] (% by mole) represented by the percentage of the number of moles of the repeating unit B to the total number of moles of the repeating unit A and the repeating unit B being 25% or more by mole and 95% or less by mole. The polyimide layer has a plurality of pores. The pores occupy 5% or more by volume and 80% or less by volume of the polyimide layer.
ASSEMBLED WIRE, METHOD OF MANUFACTURING ASSEMBLED WIRE AND SEGMENT COIL
An assembled wire has a substantially rectangular cross section, and is formed by assembling a plurality of strands. Each strand has a conductor portion and a strand insulating layer covering the conductor portion. At least a part of the assembled plurality of strands in the longitudinal direction is covered with an outer insulating layer. The strand is formed as follows. First, the strand insulating layer is coated on the outer periphery of the conductor portion. At this time, a large number of voids are formed in a resin constituting the strand insulating layer. From this state, the strand is formed, for example, by collapsing the strand insulating layer by heating and pressurizing. At this time, it is possible to uniformly collapse the strand insulating layer by crushing the internal voids. Therefore, the voids in the strand are crushed and flattened in the thickness direction of the strand insulating layer over the entire periphery.
Wire harness with wire and protective material
A wire harness that is capable of protecting a wire even if a pipe is damaged includes: a wire disposed in a pipe; and a protective material surrounding and protecting a predefined portion of the wire, the predefined portion being disposed within the pipe. This configuration places the protective material on a portion that is likely to be damaged in the event of, for instance, a collision of a vehicle, thereby capable of protecting the wire even if the pipe is damaged. This configuration is also capable of avoiding the diameter of the pipe being increased for the process of passing the wire through the pipe, because the wire in this configuration is passed through the pipe with greater ease than a wire surrounded by a protective material along its entire length of the wire.
Wiring Member
A wiring member is provided with a plurality of electrical wires, a first resin molded part, and a second resin molded part. In the plurality of electrical wires, a first bundled wire part branches into a first branched wire part and a second bundled wire part at a first branch position, and the second bundled wire part branches into a second branched wire part and a third branched wire part at a second branch position. The first resin molded part covers the electrical wires at the first branch position, and maintains an extension direction of the first branched wire part. The second resin molded part is formed separately to the first resin molded part, covers the electrical wires at the second branch position, and maintains extension directions of the second branched wire part and the third branched wire part.