Harzzusammensetzung, Stromkabel und Verfahren zur Herstellung eines Stromkabels

Details

Veröffentlichungs-Nr.

EP4738388

Anmeldetag

30. Juni 2023

Veröffentlichung

2. Januar 2025

Rechtsraum

EP

IPC

H01B3/44, H01B9/00

Abstract

This resin composition is provided to cover a conductor of a power cable, and constitutes an insulating layer having an inner peripheral surface facing the conductor and an outer peripheral surface opposite to the inner peripheral surface. The resin composition includes: a base polymer that contains propylene units; a modified polymer that contains the propylene units and that is modified by at least one selected from an unsaturated organic acid and a derivative thereof; and a thermoplastic elastomer. The resin composition is configured such that the ratio of the storage elastic modulus of an inner sample of the insulating layer to the storage elastic modulus of an outer sample of the insulating layer is 1.1 or more and 2.5 or less, and the ratio of the volume resistivity of the inner sample to the volume resistivity of the outer sample is 1.0 or more and 1.5 or less. Here, the outer sample of the insulating layer is collected from a position of 0.3 mm from the outer peripheral surface toward the conductor, the inner sample of the insulating layer is collected from a position of 0.3 mm from the inner peripheral surface toward the outer peripheral surface, and the storage elastic modulus of the outer sample and the storage elastic modulus of the inner sample are measured at 25°C by dynamic viscoelasticity measurement.

Anmelder

Firma

Sumitomo Electric Industries, Ltd.

Land

🇯🇵 Japan

Fachgebiete