Hitachi Metals, Ltd.

Takuya Oriuchi

Hideyuki Suzuki

Makoto Iwasaki

Ryutaro Kikuchi

Mitsuru Hashimoto

Katsuya Iikai

An electrical wire includes a conductor and an insulating layer that covers the conductor and that is cross-linked. The insulating layer is a cross-linked product of a resin composition including (a) a base polymer containing polyolefin and a compatibilizer, (b) a photoradical generator of 0.5 parts by mass or more and 3 parts by mass or less relative to the 100 parts by mass of the base polymer, and (c) a reactive monomer of 1 part by mass or more and 5 parts by mass or less relative to the 100 parts by mass of the base polymer. A relative dielectric constant of the insulating layer is less than 2.5.

Electric wire, cable, and manufacturing method of electric wire

An electrical wire includes a metal conductor and an insulation layer. A wire diameter of the metal conductor is 0.20 mm or smaller. The insulation layer covers the metal conductor. The insulation layer includes an ultraviolet-crosslinkable resin composition containing 80% by mass or more of a thermoplastic resin. The ultraviolet-crosslinkable resin composition desirably contains, relative to 100 parts by mass of the thermoplastic resin, 0.5 parts by mass or more and 5 parts by mass or less of a photoradical generator, and 1 part by mass or more and 15 parts by mass or less of a reactive monomer.

Electrical wire, coaxial electrical wire, cable, and method for manufacturing electrical wire

A non-halogen flame-retardant insulated electric wire includes a conductor and a crosslinked single-layer or a multilayer insulating layer on an outer periphery of the conductor. The insulating layer has a tensile elastic modulus of 500 MPa or more and an elongation at break of 120% or less in a tensile test performed at a displacement rate of 200 mm/min, and has a storage elastic modulus at 125&#xb0; C. of 3&#xd7;10Pa or more in a dynamic viscoelasticity test.

Non-halogen flame-retardant insulated electric wire and non-halogen flame-retardant cable

A non-halogen flame-retardant insulated electric wire and a non-halogen flame-retardant cable that have excellent abrasion resistance, terminal processability, and handling ease in a high-temperature environment are provided. A non-halogen flame-retardant insulated electric wire includes a conductor and a crosslinked single-layer or multilayer insulating layer on an outer periphery of the conductor. The insulating layer has a tensile elastic modulus of 500 MPa or more and an elongation at break of 120% or less in a tensile test performed at a displacement rate of 200 mm/min, and has a storage elastic modulus at 125&#xb0; C. of 3&#xd7;10Pa or more in a dynamic viscoelasticity test.

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Tokyo, Japan

Takuya Oriuchi