The invention relates to a method and arrangement of crosslinking or vulcanizing an elongate element, the method including an extrusion step in which a conductor element is coated by a layer of crosslinkable synthetic material and a crosslinking step in which crosslinking reaction is carried out after the extrusion step. The crosslinking reaction is carried out at first in a first heating zone by heating by heating the coated conductor element in a temperature of 550 degrees Celsius or higher. The first heating zone is located downstream of the extrusion step. After the first heating zone the crosslinking reaction is carried further by heating the coated conductor in a temperature of 200-300 degrees Celsius in a second heating zone.

A cable including a conductive composite core formed from braided carbonized fibers and fiberglass fibers. At least a portion of the fiberglass fibers are coated with magnetic material to suppress electromagnetic interference noise. Methods of forming such cables is also provided herein.

There is provided a method for manufacturing an insulated wire, including at least: coating an outer periphery of a running wire with an insulation coating material discharged from a coating material discharging tank; baking the insulation coating material by an incinerator, the insulation coating material being used for coating the outer periphery of the running wire; and cooling the running wire by a cooling mechanism so that a temperature of the running wire before being coated with the insulation coating material, is a specific temperature, based on a temperature of the running wire detected by a temperature detector, wherein the coating, the baking, and the cooling are repeated.

A busbar includes: an elongated busbar body which is composed of an electrically conductive material; and an insulating coating which covers the circumference of the busbar body. The cross section of the busbar body orthogonal to the longitudinal direction is substantially rectangular. The insulating coating is composed of a light curing resin which has an elongation percentage of not less than 50% after being cured and a Young's modulus of not more than 900 MPa. And the insulating coating is formed by applying the light curing resin onto the surface of the busbar body and then curing the applied light curing resin. The light curing resin has a viscosity of 10 to 1000 Pa.Math.s at 25 C.

High reliability power cables for subsea application are provided. Example power cables provide enhanced resistance to partial discharge dielectric breakdown as well as resistance to explosive gas decompression, by eliminating micro-defects and voids at the interface between the insulation layer and the barrier layer during the cable manufacturing process. Lead metal, which is conventionally extruded as a primary barrier layer, is replaced in the example power cables by a gas-and-fluid-resistant thermoplastic that is co-extruded or tandem extruded with surface-modified insulation to promote bonding between the two layers. Elimination of lead metal in the example power cables also significantly reduces their overall weight. The improved resistance to partial discharge and resistance to rapid gas decompression translates to lower workover and lower cost of ownership.

An insulated electric conductor with increased adhesion of an insulating coating includes an electric conductor, preferably made of copper or aluminum, with an insulating coating having either at least one insulating layer made of thermoplastic material, or the insulating layer and a plastic-containing intermediate layer, obtainable by a method in which the electric conductor is placed under a protective gas atmosphere and is bombarded with ions of the protective gas in a gas plasma in order to remove an oxide layer formed on a surface of the electric conductor and/or to increase the surface energy of the electric conductor, and subsequently either the at least one insulating layer or, in the case that the coating includes the plastic-containing intermediate layer, at least the plastic-containing intermediate layer is applied directly to the surface of the electric conductor under a protective gas atmosphere.

A resin composition, containing: a component (A) being a base resin containing an ethylene--olefin random copolymer including an -olefin component having 4 to 12 carbon atoms; a component (B) being a wet dispersant; a component (C) being an antioxidant; and a component (D) being a crosslinking aid,
wherein the ethylene--olefin random copolymer including the -olefin component having 4 to 12 carbon atoms has a crystallinity of 15 to 24%, and
wherein a content of the component (B) is 2 to 10 parts by mass with respect to 100 parts by mass of a content of the component (A).

A method of manufacturing a polymer-insulated conductor. The method includes the steps of a) providing a conductor having a first cross-sectional shape, b) passing the conductor through a conductor-shaping die to shape the conductor such that the conductor obtains a second cross-sectional shape, wherein frictional heat is developed in the conductor, thereby setting the conductor in a heated state, c) applying molten polymer to the conductor when the conductor is in the heated state to obtain a polymer-coated conductor, and d) shaping the polymer-coated conductor by means of a polymer-shaping die to thereby obtain the polymer-insulated conductor.

An insulated wire including a conductor and a resin coating layer covering a periphery of the conductor, wherein the conductor is an aluminum conductor surface-treated with CO.sub.2 plasma, and at least a portion of the resin coating layer in contact with the conductor includes at least one kind of a polyaryletherketone resin and a polyphenylene sulfide resin.

There is provided an insulated wire, comprising: a conductor; and an insulated layer arranged on an outer circumference of the conductor, wherein the insulate layer is made of a resin composition including polyphenylene sulfide resin and silicone rubber, and in a state of 160 C. or more, a mass loss of the insulated layer which is caused by generation of a siloxane gas from the silicone rubber, is less than 1% of the mass of the silicone rubber.