SMALL DIAMETER HIGH VOLTAGE INSULATED ELECTRIC WIRE

摘要

A thin high-voltage insulted electric wire which comprises a conductor and an insulating layer covering the conductor, said insulating layer comprising both an ethylene-acrylic ester copolymer resin and polyethylene. The insulating layer is made of a composition which exhibits a reciprocal of the product of tensile break strength (σf) (MPa) and tensile break elongation (ε), 1/(σf·ε), of 4.8×10−2 or less [wherein σf refers to the tensile break strength of the insulating layer and ε refers to the tensile break elongation thereof], a storage elastic modulus (E) of 520 MPA or more, and a D hardness of 45 or more.

主权项

1. A small diameter high voltage insulated electric wire including a conductor covered with an insulating layer, wherein
the insulating layer contains a copolymer resin of ethylene and acrylic ester and polyethylene, when σf (MPa) denotes a tensile break strength and ε denotes a break elongation, the insulating layer is a composition having a product 1/(σf·ε) of the inverse of the tensile break strength σf and the inverse of the break elongation ε being 4.8×10−2 or less, and having a value of storage elastic modulus E being 520 MPa or more, and having a D hardness being 45 or more, and the insulating layer further contains a metal hydroxide as flame retardant.