The present invention relates to a polyolefin composition comprising a polyolefin (A), a fullerene composition (B) which comprises: a C.sub.60 fullerene or a C.sub.60 chemical derivative selected from the group consisting of methanofullerene derivatives, PCBM derivatives, ThCBM derivatives, Prato derivatives, Bingel derivatives, diazoline derivatives, azafulleroid derivatives, ketolactam derivatives, and Diels-Alder derivatives; or a C.sub.70 fullerene or a C.sub.70 chemical derivative selected from the group consisting of methanofullerene derivatives, PCBM derivatives, ThCBM derivatives, Prato derivatives, Bingel derivatives, diazoline derivatives, azafulleroid derivatives, ketolactam derivatives, and Diels-Alder derivatives; or a blend of fullerenes; a master batch, a cable, and uses thereof.

The invention relates to a use of a polymer composition for producing an insulation layer of an AC power cable with and to an AC cable surrounded by at least an insulating layer comprising said polymer composition.

The present invention relates to a laminate including a two-dimensional material and an adhesive sheet having a base material and an adhesive layer whose adhesive force decreases due to ultraviolet rays or heat, in which an adhesive force A at 25 C. of the adhesive layer before the ultraviolet rays or heat applies, to a silicon wafer is 1.0 N/20 mm to 20.0 N/20 mm when the adhesive layer is subjected to 180 peeling at a tensile speed of 300 mm/min, and a surface roughness of an adhesive surface of the adhesive layer after the ultraviolet rays or heat has been applied is 0.01 m to 8.00 m.

A DC power cable system having: a power cable including a conductor, an insulation system surrounding the conductor, an optical fiber cable extending along the insulation system; a power cable accessory, wherein the conductor is connected to the power cable accessory, a sensor arranged in the power cable accessory, a power supply lead extending along the insulation system, and a signal communication device powered via the power supply lead and connected to the optical fiber cable, wherein the signal communication device is arranged to receive an electrical signal from the sensor, convert the electrical signal to an optical signal, and transmit the optical signal through the optical fiber cable.

Provided is a high-voltage power cable. Specifically, the present disclosure relates to a high-voltage power cable that exhibits excellent dielectric strength, such as dielectric breakdown voltage and impulse breakdown strength, and that is capable of implementing and maintaining dielectric characteristics even when a temperature of a cable insulator rises due to the transmission of power or when negative impulse or polarity reversal occurs.

This disclosure describes co-extruded multilayer articles including at least one continuous layer and one discontinuous layer, as well as systems and techniques for the manufacture of co-extruded multilayer articles. For example, a co-extruded multilayer article is described that includes a body having a plurality of layers, where a first layer of the plurality of layers is formed from a first material and is continuous along a longitudinal axis of the body, and a second layer of the plurality of layers is formed from a second material and is discontinuously co-extruded along the longitudinal axis.

The present disclosure relates to a cable having reduced loss. Specifically, the present invention relates to a cable having reduced loss that is capable of minimizing the limitation of rated current due to heating of an outer armor and the resultant transmission loss while reducing manufacturing costs and minimizing an outer diameter and weight of the cable.

An ultra-high voltage direct current (DS) power cable may be provided via a conductor formed by twisting a plurality of strands, an inner semiconducting layer surrounding the conductor, an insulating layer surrounding the inner semiconducting layer; and an outer semiconducting layer surrounding the insulating layer, wherein the insulating layer is formed of an insulation composition containing a polyolefin resin and a crosslinking agent, and the insulating layer is divided into three equal parts in a thickness direction, the three equal parts including an inner layer, an intermediate layer and an outer layer.

The disclosure relates to a multi-layered lightweight high-voltage electrical cable 1, comprising: a bundle 2 of metallic wires 3; an inner semi-conductive layer 4, made of a first broad range temperature rated polymeric material of a first color, surrounding said bundle 2 of metallic wires 3; at least one of the metallic wires 3 being in electric contact with the inner semi-conductive layer 4; an insulating layer 5, made of a second broad range temperature rated polymeric material of a second color, surrounding the inner semi-conductive layer 4; an outer semi-conductive layer 6, made of a third broad range temperature rated polymeric material of a third color, surrounding and having a void-free and delamination-resistant bond to the insulating layer 5; the second color and the third color contrasting with each other. The disclosure further relates to a method of stripping an electrical cable 1 and a kit for correct stripping.

The present disclosure relates to a submarine cable in which cross-wound directions and cross-wound pitches of a metal wire and a shielding member surrounding an outer side of the metal wire that constitute a metal shielding layer of the submarine cable are optimized to minimize damage to the metal shielding layer, to enable rapid energization in the event of an accidental current, and further to enhance flexibility by varying the cross-wound pitch of at least one of the metal wire and the shielding member that constitute the metal shielding layer according to an environment in which the submarine cable is laid.